GREEN - Truss Fab Inctrussfabinc.com/documents/CND-Residential-Design-Manual.pdfK (x106 psi) I-Joist...

418 St-Dizier Street Montreal, Quebec, Canada H2Y 3P8

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TheGREEN

BuildingSolution

inTernaTional beaMS

Residential Design Manual for I-Joists

JanuarY 2010

P A G E 1 I N T E R N A T I O N A L B E A M S

At International Beams Inc. we take pride in providing our customers with premium qualityproducts and services. Our full range of engineered wood products are manufactured to provide consistent, high performance floor and roof systems.

Our technical staff consists of highly trained technical experts available to assist with any

design or construction question and to provide full support for our design/layout software.

International Beams Inc. manufactures and tests its products to very high quality control

standards. We are confident that our products will provide our customers with consistent

high performance when handled and installed in accordance with our Installation Guide.

We guarantee that our products are defect-free and capable of supporting loads as

specified in our product literature for the life of the structure. In the unlikely event that

you receive a product that has a manufacturer's defect, please contact us to have the

problem remedied immediately.

Table of Contents

Environmental Choice

Construction details reprinted with permission from the APA - The Engineered Wood Association.

In choosing wood as a construction material, you are choosing the only building material that is made from renewable resources. Due to sustained forest practices, the volume of wood in our forests has actually increased by 35% over the last 25 years. International Beams’ I-joists are made from two wood products. The flanges are made from small dimension lumber that is sawn from small trees and the tops of larger trees.

The web is a special grade of oriented strand- board that is made from under-utilized wood species. Both components assist in achieving total utilization of each tree harvested.

When considering total environmental impact including extraction of raw materials, energy required during manufacturing, emissions from manufacturing operations, and energy efficiency of buildings, Inter-national Beams group of engineered wood products are among the most environmentally friendly building products available. For details on how IB products can help to meet green building standards, see page 23, or contact International Beams.

Our Company 1

Engineered Wood Products 2

Table 1, IB Residential Product Line 3

Table 1A, Additional ER & IR 4

Table 2, IB400, 40LL+15DL Floor Span Table 5




Floor Framing & Construction Details 9

Floor Framing Details 10

Floor Framing Details 11

Web Stiffener Requirements 12

Cantilever Framing Details 13

Cantilever Framing & Double I-Joists Details 14

Cantilever Reinforcement 15

Web Hole Guidelines 16

Roof Framing & Construction Details 17

Roof Framing Details 18

Roof Framing Details 19

Maximum Residential Roof Spans 20



The Green Building Solution 23

Framing Connectors 24

Storage, Handling & Safety Guidelines 25

Notes 26

Our Guarantee

Our Company

Engineered wood products, and specifically I-joists offer advantages over conventional lumber products that result in savings for the builder and long-term performance benefits for the homeowner.

I-joists are installed using traditional framing tools and fasteners. With long lengths, I-joists are used in multiple span applications, thus reducing cutting, overlapping and material waste at the job site. Also, since I-joists span longer distances than traditional framing lumber, the joist spacing can be wider, resulting in fewer pieces to handle and install.

The wide flanges used in all IB series provide a larger gluing and nailing surface for floor and roof sheathing. These lightweight joists will not twist, warp, or shrink and are more uniform in their dimensions than solid lumber. Our joists are available in depthts from 9½" to 24" and lengths up to 52 feet. For commercial design considerations in depths 18 to 24 inches, see our Commercial Design Manual or contact International Beams.

International Beams Inc.’s I-joists are recognized as an innovative solution to the building industry’s floor and roof framing needs.

Floor PerformanceOur broad range of I-joists provides the builder with flexibility in joist selection, spacing, and construction detail. Although all values contained in this brochure meet or exceed code requirements, long-term floor performance (comfort) should be considered in all construction projects.

The following suggestions will increase the floor stiffness and reduce floor vibration:

• Using floor deflection of L/480 instead of the code minimum of L/360.• Gluing and nailing the sub-floor to the joists.• Attaching gypsum board to the bottom of the floor.• Decreasing the joist spacing by one increment based on allowable span.• Using full depth I-joist blocking panels at mid span between floor joists.• Using deeper joists.• Using a thicker sub-floor, i.e. ¾" or 7/8".• Attaching strapping at 16" o/c.

Design ServicesDesign and related services include, but are not limited to:

• Beam sizing• Component Framing Layouts• Coordination with architects and builders • On-site review• Pricing • Shipping

These services are generally provided by your local International Beams distributor. There are also local lumber yards, stocking dealers, and design professionals who are familiar with our IB products and may be able to provide some of these design services. If you need help with your design project, please contact International Beams at [email protected], or contact the local distributor indicated on the back cover of this literature.

Engineering Responsibility Position StatementInternational Beams Inc. manufactures and distributes proprietary engineered wood products (EWP).

We have full-time professional engineers (P.Eng.) on staff. Our engineers are active in the development, manufacture, and marketing of IB products.

Our engineering services are limited to supporting the engineered wood components that we manufacture and distribute (IB I-joists, IB LVL, IB Rim Board). We review and seal component calculations produced on our software, and provide advice on proper installation.

The design professional of record (P.Eng. or Architect) is responsible for design of the overall structure, global lateral stability, and interaction of various components of the structure. The limited scope of engineering services provided by International Beams Inc. does not replace the need on any project for a design professional of record.


International BeamsResidential Product LineIB 400 and 600 IB 800 IB 900

9½11⅞14169½11⅞141618209½11⅞14161820

11⅞14161820

IB400

IB600

IB800

IB900

Allowable Design Properties

Series Depth(in.)

BendingStiffness(B)

EI joist

(x106 psi)

Factored Moment

Resistance(C)

Mr

(ft-lbs)

Factored Shear

Resistance(D)

Vr

(lbs)

Factored ER(E)

Resistance1 3/4 in. brg.

(lbs)

Factored IR(F)

Resistance3 1/2 in. brg.

(lbs)

ShearDeflection Factor(G)

K(x106 psi)

I-Joist Self-Weight

(unfactored)

(plf)

Notes: A. Design values were developed in accordance with CAN/CSA-086-01, "Engineering Design in Wood," for standard term load duration (KD=1). All values, except EI and K, are permitted to be adjusted for other load durations as permitted by CAN/CSA-086-01, "Engineering Design in Wood". B. Bending stiffness (EI) of the I-joist. C. Factored moment resistance (MR) shall not be increased by any Code-allowed system factor. D. Factored shear resistance (VR) of the I-joist with a minimum end bearing of 4 inches with web stiffeners. I-Joists without web stiffeners and reaction- limited smaller bearings may have lower capacities. See table 2 for web stiffener requirements which vary by depth and series. E. Factored end reaction (ER) resistance is for a minimum end bearing of 1 3/4" without web stiffeners. Higher end reactions are permitted with increased bearing length and web stiffeners. See table 2 for web stiffener requirements which vary by depth and series. F. Factored intermediate reaction (IR) resistance is for a minimum bearing length of 3 1/2 inches without web stiffeners. Higher interior reactions are permitted with increased bearing length and web stiffeners. See the factored end reaction table in this brochure for web stiffener requirements which vary by depth and series.

Equation #1 = 5wL4 + wL2 Where: (Uniform Load) 384EI K = Calculated deflection (inches) w = Unfactored uniform load (lbf/inch)

Equation #2 = PL3 + 2PL L = Design span (inches) (Center-Point Load) 48EI K EI = Bending stiffness of the I-joist (lbf-in.2) K = Shear deflection factor P = Concentrated load (lbf)

H. For information relating to the use of International Beams products in the USA, refer to our American literature.

∆

∆

∆

G. Shear deflection factor (K), which shall be used to calculate uniform load and center-point load deflections of the I-joist in a simple span application based on equations #1 and #2 below.

CCMC12768-R

18"18" 20" 20"18" 20"

198336494673235399585799

1,0461,304326552807

1,0941,4451,799604884

1,1991,5651,984

4,6566,0357,2668,4216,4188,31310,00911,60513,12714,5239,08711,77214,18216,44418,51420,58314,67317,67421,00723,75126,287

1,8702,3362,4462,4461,8702,3362,4462,4462,4462,4461,8702,3362,4462,4462,5252,6042,9752,9752,9752,9752,975

1,7051,8941,8941,8941,7051,8942,0362,1702,3122,4461,7052,0202,0362,1702,3122,4462,2102,2102,2102,4462,446

3,4093,9463,9463,9463,4093,9463,9463,9463,9463,9463,7414,4354,7674,8934,8934,8935,2955,2955,2955,2955,295

4.946.187.288.324.946.187.288.329.3610.44.946.187.288.329.3610.46.187.288.32

11.5212.8

2.62.93.13.32.62.93.13.32.94.13.53.73.94.14.34.53.94.14.34.74.9

P A G E 4I N T E R N A T I O N A L B E A M S

IB400

IB600

IB800

IB900

Factored End Reaction (ER) Resistances and Factored Interior Reactions (IR) Resistancesof "400, 600, 800, 900" Series Residential Depth I-Joists (Limit States Design) (1)

Series Depth(in.) 1¾" Bearing

No stiffeners Stiffeners No stiffeners Stiffeners No stiffeners Stiffeners No stiffeners Stiffeners No stiffeners Stiffeners

3½" Bearing 4" Bearing 3½" Bearing 5½" Bearing

Factored End Reaction Resistance (2)

(pounds)Factored Interior Reaction Resistance (3)

(pounds)

Notes: 1. Design values were developed in accordance with CAN/CSA- 086-01, "Engineering Design in Wood", for standard term load duration (K

D=1). All values, except EI and K, are permitted

to be adjusted for other load durations as permitted by CAN/CSA-086-01, "Engineering Design in Wood".

2. Interpolation of the factored end reaction resistances between 1¾" and 3½" is permitted.

3. Interpolation of the factored interior reaction resistances between 3½" and 5½" is permitted.

9½

11⅞

14

16

9½

11⅞

14

16

18

20

9½

11⅞

14

16

1820

11⅞

14

16

18

20

3,741

4,672

5,453

5,761

4,325

4,956

5,453

5,761

5,895

6,029

4,325

4,956

5,524

6,313

6,6696,866

5,295

5,777

6,455

7,324

7,892

1,705

1,894

1,894

1,894

1,705

1,894

2,036

2,170

2,312

2,446

1,705

2,020

2,036

2,170

2,3122,446

2,210

2,210

2,210

2,312

2,446

1,705

1,894

1,894

1,894

2,131

2,478

2,723

2,723

2,723

2,723

2,218

2,502

2,762

3,157

3,583

3,883

2,502

2,762

3,157

3,583

3,898

1,792

2,233

2,446

2,446

1,831

2,233

2,446

2,446

2,446

2,446

1,831

2,233

2,446

2,446

2,446

2,446

2,849

2,849

2,849

2,644

2,644

1,792

2,233

2,446

2,446

2,162

2,478

2,762

3,157

3,551

3,946

2,218

2,502

2,762

3,157

3,630

4,104

2,869

3,094

3,677

3,962

4,230

1,823

2,336

2,446

2,446

1,870

2,336

2,446

2,446

2,446

2,446

1,870

2,336

2,446

2,446

2,525

2,604

2,975

2,975

2,975

2,975

2,975

1,823

2,336

2,762

3,157

2,162

2,478

2,762

3,157

3,551

3,946

2,218

2,502

2,762

3,157

3,6304,104

3,038

3,354

3,677

3,962

4,254

3,409

3,946

3,946

3,946

3,409

3,946

3,946

3,946

3,946

3,946

3,741

4,435

4,767

4,893

4,8934,893

5,295

5,295

5,295

5,295

5,295

3,741

4,411

4,411

4,411

4,325

4,853

5,074

5,288

5,406

5,445

4,325

4,956

5,524

6,313

6,6696,866

5,295

5,571

6,187

6,740

7,260

3,646

4,435

4,893

4,893

3,741

4,435

4,893

4,893

4,893

4,893

3,741

4,435

4,893

4,893

4,8934,893

5,295

5,295

5,295

5,295

5,295

International BeamsResidential Product Line


IB400 Series Spans40 psf Unfactored Live Load15 psf Unfactored Dead Load Limit States Design (LSD) 100% Load Duration (L/480 live load, L/240 total load deflection criteria)

Table 2 - IB400 Maximum Floor Spans

1¾" 1¾"Single Span Indicated in Table

1¾" 1¾"3½"CLof interior bearing Span 2Span 1

Continuous Spans Indicated in Table

LegendAssembly “A”: Indicated subfloor with no additional components addedAssembly “B”: Assembly “A” plus ½" thick gypsum board ceiling applied directly to bottom flangeAssembly “C”: Assembly “B” plus 1 row of I-joist blocking at mid-span

12" 16" 19.2" 12" 16" 19.2" 24" 12" 16" 19.2" 24"

Single

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

Continuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

7/8" OSB subfloor glued and nailedSpacing of IB joist (o.c.)


5/8" OSB subfloor glued and nailed Spacing of IB joist (o.c.)

Subfloor

14"

16"

Joist Depth

FloorAssembly

A

B

C

A

B

C

A

B

C

A

B

C

9½"

11⅞"

I-Joist

Span

NOTES: (a) Allowable spans are applicable to floor construction. LSD load factor of 1.5 is applied to live load and 1.25 to dead load. The serviceability limit states include the CCMC consideration for floor vibration. The live load and dead load deflection limits are indicated at the top of the span table. (b) Spans are based on partial composite action with glued and nailed subfloor meeting requirements for APA Span-Rated STURD-I-FLOOR conforming to PRP-108, PS 1, PS 2, CSA 0325, or CSA 0437. Construction adhesive shall meet the requirements given, in ASTM D3498 or APA Specification AFG-01. (c) Minimum bearing length shall be 1¾” for end bearing and 3 ½” for interior bearings. Allowable design spans in the table are measured from inside face of bearings for simple spans and from inside face of end bearing to center of interior bearing for continuous spans. (d) Bearing stiffeners are not required when I-joists are used with the spans given in this table, except as required by hanger manufacturers. (e) This span table is based on uniform loads. For applications with other than uniformly distributed loads, or other applications beyond the scope of the indicated design criteria, an engineering analysis may be required based on the use of the design properties accepted in the CCMC 12768-R evaluation report. Design properties are also indicated in table 1 at the front of the design manual. For technical support, contact International Beams (IB) or your local IB distributor. (f) Continuous spans given in the table above are the longest clearspan between bearings for a joist with three bearings. The ratio of the shorter span to the longer spans must be greater than 40%. For two spans with a ratio of between 40% and 76%, provide metal hangers or equivalent to withstand an uplift force at the end of the shorter span. Calculate factored uplift (lbs.) at the end of the shorter span as follows: factored total load (psf) x joist spacing (inches) x [shorter span (feet) minus 0.76 x longer span (feet)] divided by 25. For all other applications, consult International Beams.

15'-0"16'-3"15'-5"16'-9"16'-3"18'-4"16'-9"18'-4"17'-3"19'-0"19'-4"21'-4"18'-4"20'-4"19'-0"21'-2"21'-11"23'-6"19'-11"22'-1"20'-9"23'-1"24'-4"25'-3"

15'-10"17'-3"16'-4"17'-9"17'-9"19'-11"17'-9"19'-8"18'-5"20'-5"21'-2"23'-4"19'-9"21'-11"20'-5"22'-9"23'-11"26'-3"21'-6"23'-10"22'-4"24'-9"26'-4"28'-10"

14'-6"15'-9"14'-11"16'-3"15'-3"17'-1"16'-2"17'-1"16'-8"18'-3"18'-3"19'-6"17'-7"19'-6"18'-2"20'-3"20'-8"21'-5"19'-1"21'-2"19'-10"22'-1"22'-11"23'-1"

16'-9"18'-3"17'-2"

18'-10"17'-11"20'-4"

18'-11"21'-0"19'-7"21'-9"21'-4"24'-3"21'-1"23'-4"21'-9"24'-2"24'-2"27'-1"

22'-11"25'-5"23'-8"26'-3"

26'-10"29'-2"

15'-9"17'-2"16'-2"17'-7"16'-4"18'-5"17'-8"19'-6"18'-2"20'-3"19'-5"21'-4"19'-6"21'-8"20'-3"22'-6"22'-1"23'-6"21'-3"23'-7"22'-0"24'-6"24'-5"25'-3"

15'-2"16'-6"15'-5"17'-0"15'-5"17'-1"17'-0"18'-7"17'-6"19'-4"18'-4"19'-6"18'-7"20'-8"19'-4"21'-5"

20'-10"21'-5"20'-3"22'-6"21'-0'23'-1"23'-0"23'-1"

14'-4"15'-4"14'-4"15'-4"14'-4"15'-4"16'-4"17'-5"16'-9"17'-5"17'-1"17'-5"17'-9"19'-2"18'-4"19'-2"19'-1'19'-2"19'-2"20'-0"

19'-11"20'-0"20'-6"20'-0"

17'-6"19'-3"

17'-10"19'-10"18'-1"20'-6"20'-0"22'-2"20'-7"

22'-10"21'-6"24'-8"22'-2"24'-7"

22'-11"25'-5"24'-5"27'-1"24'-2"26'-9"

24'-11"27'-8"27'-0"29'-2"

16'-6"17'-11"16'-6"18'-6"16'-6"18'-7"18'-7"20'-7"19'-2"21'-4"19'-7"21'-4"20'-7"

22'-10"21'-4"23'-6"22'-3"23'-6"22'-5"

24'-10"23'-3"25'-3"24'-8"25'-3"

15'-7"17'-1"15'-7"17'-1"15'-7"17'-1"17'-9"19'-6"18'-4"19'-6"18'-6"19'-6"19'-8"21'-5"20'-4"21'-5"21'-0"21'-5"21'-4"23'-1"22'-2"23'-1"23'-0"23'-1"

14'-6"15'-4"14'-6"15'-4"14'-6"15'-4"17'-0"17'-5"17'-3"17'-5"17'-3"17'-5"18'-6"19'-2"19'-1"19'-2"19'-1"19'-2"20'-2"20'-0"20'-6"20'-0"20'-6"20'-0"








12" 16" 19.2" 12" 16" 19.2" 24" 12" 16" 19.2" 24"

Single

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

Continuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous




Subfloor

14"

16"

18"

20"

Joist Depth

FloorAssembly

A

B

C

A

B

C

A

B

C

A

B

C

SingleContinuous

SingleContinuous

SingleContinuous

A

B

C

SingleContinuous

SingleContinuous

SingleContinuous

A

B

C

9½"

11⅞"

I-Joist

Span


15'-5"16'-9"15'-10"17'-3"17'-0"19'-2"17'-3"19'-0"17'-9"19'-8"20'-4"22'-6"19'-0"21'-1"19'-8"21'-10"23'-0"25'-3"20'-8"22'-11"21'-5"23'-10"25'-3"27'-9"22'-3"24'-9"23'-1"25'-8"27'-6"30'-0"23'-8"26'-4"24'-7"27'-4"29'-7"30'-0"

16'-4"17'-9"16'-9"18'-4"18'-8"20'-7"18'-5"20'-5"19'-0"21'-2"21'-11"24'-1"20'-6"22'-9"21'-2"23'-6"24'-8"27'-1"22'-4"24'-9"23'-1"25'-8"27'-2"29'-9"24'-1"26'-8"24'-11"27'-8"29'-6"32'-6"25'-7"28'-5"26'-6"29'-5"31'-9"35'-11"

14'-11"16'-2"15'-3"16'-8"16'-1"18'-1"16'-8"18'-2"17'-1"

18'-10"10'-2"21'-6"18'-2"20'-2"18'-9"

20'-11"21'-9"24'-2"19'-9"

21'-11"20'-6"

22'-10"24'-1"25'-0"21'-3"23'-8"22'-1"24'-7"26'-3"25'-0"22'-8"25'-0"23'-7"25'-0"28'-3"25'-0"

17'-3"18'-11"17'-7"19'-5"

18'-10"21'-5"19'-8"

21'-10"20'-3"22'-6"22'-5"25'-0"

21'-10"24'-3"22'-6"25'-0"25'-5"28'-0"23'-9"26'-5"24'-6"27'-2"28'-0"30'-9"25'-8"28'-5"26'-5"29'-4"30'-5"

33'-11"27'-3"30'-3"28'-1"31'-2"

32'-10"37'-3"

16'-3"17'-8"16'-7"18'-1"17'-2"19'-4"18'-3"20'-3"18'-9"

20'-11"20'-5"23'-5"20'-3"22'-5"

20'-11"23'-3"23'-2"26'-3"22'-0"24'-5"22'-9"25'-4"25'-9"

28'-10"23'-9"26'-4"24'-6"27'-3"28'-1"30'-0"25'-3"28'-0"26'-2"29'-0"30'-3"30'-0"

15'-7"17'-0"16'-0"17'-5"16'-2"18'-2"17'-6"19'-3"

17'-11"19'-11"19'-3"22'-4"19'-3"21'-5"

19'-11"22'-2"

21'-10"25'-0"21'-0"23'-3"21'-9"24'-2"24'-3"25'-0"22'-7"25'-0"23'-5"25'-0"26'-6"25'-0"24'-1"25'-0"

24'-11"25'-0"28'-7"25'-0"

15'-0"16'-4"15'-1"16'-9"15'-1"16'-9"16'-9"18'-3"17'-2"

18'-11"17'-11"20'-0"18'-3"20'-0"

18'-11"20'-0"20'-4"20'-0"

19'-10"20'-0"20'-7"20'-0"22'-7"20'-0"21'-5"20'-0"22'-2"20'-0"24'-8"20'-0"22'-9"20'-0"23'-8"20'-0"26'-7"20'-0"

18'-0"19'-11"18'-5"20'-6"19'-0"21'-7"20'-9"23'-0"21'-4"23'-8"22'-7"

25'-10"23'-0"25'-6"23'-8"26'-3"25'-8"

28'-11"25'-1"27'-9"25'-6"28'-7"28'-5"31'-8"27'-0"

29'-11"27'-9"30'-9"31'-1"35'-1"28'-9"

31'-10"29'-7"33'-0"

33'-6"38'-4"

16'-11"18'-6"17'-4"19'-1"17'-4"19'-6"19'-3"21'-4"

19'-10"22'-0"20'-7"24'-3"21'-4"23'-8"22'-0"24'-6"23'-5"27'-2"23'-3"25'-9"24'-0"26'-8"

25'-11"29'-8"25'-1"27'-9"

25'-10"28'-9"28'-4"30'-0"26'-8"29'-7"27'-7"30'-0"30'-6"30'-0"

16'-4"17'-9"16'-4"18'-3"16'-4"18'-4"18'-4"20'-4"

18'-11"21'-0"19'-5"

22'-11"20'-4"22'-7"21'-0"23'-4"22'-1"25'-0"22'-2"24'-7"

22'-11"25'-0"24'-5"25'-0"

23'-10"25'-0"24'-8"25'-0"26'-9"25'-0"25'-4"25'-0"26'-3"25'-0"28'-9"25'-0"

15'-3"16'-11"15'-3"

16'-11"15'-3"

16'-11"17'-5"19'-2"

17'-10"19'-10"18'-1"20'-0"19'-2"20'-0"

19'-10"20'-0"

20'-6"20'-0'

20'-10"20'-0"21'-7"20'-0"20'-0"22'-9"22'-5"20'-0"23'-3"20'-0"

24'-11"20'-0"

23'-11"20'-0"

24'-10"20'-0"

26'-10"20'-0"








12" 16" 19.2" 12" 16" 19.2" 24" 12" 16" 19.2" 24"

Single

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

Continuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous




Subfloor

14"

16"

18"

20"

Joist Depth

FloorAssembly

A

B

C

A

B

C

A

B

C

A

B

C

SingleContinuous

SingleContinuous

SingleContinuous

A

B

C

SingleContinuous

SingleContinuous

SingleContinuous

A

B

C

9½"

11⅞"

I-Joist

Span


16'-3"17'-8"16'-8"16'-8"18'-6"20'-5"18'-3"20'-4"18'-10"21'-0"21'-8"23'-11"20'-4"22'-7"20'-11"23'-4"24'-4"26'-10"22'-1"24'-7"22'-10"25'-5"26'-9"29'-5"23'-10"26'-6"24'-8"27'-5

"29'-2"32'-1"25'-5"28'-3"26'-3"29'-2"31'-4"35'-6"

17'-3"19'-0"17'-8"19'-7"19'-11"21'-11"19'-9"22'-0"20'-4"22'-8"23'-4"25'-8"22'-0"24'-05"22'-8"25'-2"26'-3"28'-10"23'-11"26'-7"24'-8"27'-5"28'-10"31'-08"25'-10"28'-9"26'-8"29'-7"31'-5"35'-6"27'-6"30'-7"28'-4"31'-6"34'-6"39'-2"

15'-8"17'-1"16'-1"16'-1"17'-8"19'-6"17'-7"19'-5"18'-0"20'-1"20'-8"22'-10"19'-5"21'-7"20'-0"22'-3"23'-3"25'-7"21'-1"23'-6"21'-9"24'-3"25'-7"28'-1"22'-9"25'-4"23'-6"26'-2"27'-10"30'-7"24'-3"26'-11"25'-1"27'-11"29'-11"31'-0"

18'-3"20'-3"18'-8"20'-7"20'-8"

22'-10"21'-1"23'-5"21'-7"24'-0"24'-2"26'-7"23'-5"26'-0"24'-0"26'-8"27'-1"

29'-10"25'-6"28'-4"26'-2"29'-0"29'-9"

32'-11"27'-7"30'-7"28'-3"31'-4"32'-5"

36'-11"29'-4"32'-8"30'-1"

33'-10"35'-9"40'-7"

17'-1"18'-9"17'-5"19'-3"

18'-10"21'-3"19'-6"21'-8"20'-0"22'-3"22'-6"

24'-10"21'-8"24'-1"22'-3"24'-9"25'-3"

27'-10"23'-7"26'-2"24'-3"

26'-11"27'-9"30'-6"25'-5"28'-3"26'-2"29'-1"30'-2"33'-8"27'-1"30'-1"

27'-10"31'-0"32'-7"37'-1"

16'-6"17'-11"16'-10"18'-5"17'-9"20'-0"18'-7"20'-8"19'-1"21'-3"21'-2"23'-9"20'-7"

22'-11"21'-2"23'-7"24'-0"26'-7"22'-5"

24'-11"23'-1"25'-8"26'-6"29'-2"24'-2"

26'-10"24'-11"27'-9"

28'-10"31'-0"25'-9"28'-7"26'-6"29'-6"

30'-11"31'-0"

15'-9"17'-2"16'-1"17'-7"16'-6"18'-6"17'-8"19'-6"18'-1"20'-1"19'-8"22'-5"19'-6"21'-8"20'-1"22'-4"22'-4"24'-2"21'-2"23'-6"

21'-10"24'-3"24'-8"24'-9"

22'-10"24'-9"23'-7"24'-9"27'-1"24'-9"24'-4"24'-9"25'-1"24'-9"29'-2"24'-9"

19'-3"21'-5"19'-8"

21'-10"20'-11"23'-7"22'-3"24'-8"22'-9"25'-3"

24'-10"27'-6"24'-8"27'-5"25'-3"28'-0"

27'-11"30'-9"

26'-10"29'-9"27'-6"30'-6"30'-7"34'-2"29'-0"32'-2"29'-8"33'-2"33'-7"38'-2"

30'-10"34'-11"31'-7"36'-1"

36'-10"41'-10"

17'-11"19'-10"18'-3"20'-4"19'-0"21'-6"20'-7"

22'-11"21'-1"23'-6"22'-8"25'-9"

22'-10"25'-5"23'-5"26'-1"25'-8"

28'-10"24'-10"27'-7"25'-6"28'-4"28'-5"31'-6"

26'-10"29'-9"27'-7"30'-7"31'-1"35'-1"28'-7"31'-8"29'-4"32'-9"33'-7"37'-2"

17'-2"18'-11"17'-6"19'-5"

17'-11"20'-2"19'-7"21'-9"20'-1"22'-4"21'-4"24'-7"21'-9"24'-2"22'-4"

24'-10"24'-2"27'-6"23'-8"26'-3"24'-4"27'-0"26'-9"30'-2"25'-6"28'-4"26'-3"29'-2"29'-4"31'-0"27'-2"30'-2"

27'-11"31'-0"31'-7"31'-0"

16'-5"17'-10"16'-8"18'-3"16'-8"18'-7"18'-6"20'-6"

18'-11"21'-1"

19'-10"22'-5"20'-6"22'-9"21'-0"23'-5"

22'-6"24'-2"22'-3"24'-9"

22'-11"24'-9"

24'-10"24'-9"24'-0"24'-9"24'-9"24'-9"27'-3"24'-9"25'-6"24'-9"26'-4"24'-9"29'-5"24'-9"








12" 16" 19.2" 12" 16" 19.2" 24" 12" 16" 19.2" 24"

Single

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

Continuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous

SingleContinuous




Subfloor

14"

16"

18"

20"

Joist Depth

FloorAssembly

A

B

C

A

B

C

A

B

C

A

B

C

SingleContinuous

SingleContinuous

SingleContinuous

A

B

C

11⅞"

I-Joist

Span


20'-2"22'-5"20'-9"23'-1"23'-9"26'-2"22'-5"24'-11"23'-1"25'-8"26'-8"29'-4"24'-5"27'-2"25'-2"27'-11"29'-4"32'-4"26'-6"29'-5"27'-3"30'-3"32'-1"36'-5"28'-4"31'-5"29'-2"32'-6"35'-7"40'-5"

18'-8"20'-9"19'-2"21'-4"22'-0"24'-4"20'-9"23'-1"21'-4"23'-9"24'-9"27'-3"22'-7"25'-1"23'-3"25'-10"27'-3"30'-0"24'-6"27'-2"25'-3"28'-0"29'-9"32'-11"26'-2"29'-1"27'-0"30'-0"32'-7"36'-7"

17'-10"19'-10"18'-4"20'-5"21'-0"23'-2"19'-9"22'-0"20'-4"22'-8"23'-8"26'-1"21'-6"23'-11"22'-2"24'-8"26'-0"28'-7"23'-4"25'-11"24'-1"26'-9"28'-4"31'-2"24'-11"27'-8"25'-9"28'-7"30'-7"33'-7"

21'-6"23'-11"22'-0"24'-6"24'-7"27'-1"

23'-11"26'-7"24'-6"27'-2"27'-2"30'-4"26'-0"

28'-11"26'-8"29'-7"30'-3"33'-9"28'-3"31'-3"

28'-10"32'-0"33'-4"

37'-10"30'-2"

33'-11"30'-10"35'-0"

36'-10"41'-10"

19'-11"22'-1"20'-5"22'-8"

22'-11"25'-3"22'-1"24'-7"22'-8"25'-3"25'-9"28'-4"24'-0"26'-8"24'-8"27'-5"28'-3"31'-1"26'-1"

28'-11"26'-9"29'-8"30'-9"34'-7"

27'-10"30'-11"28'-7"31'-9"33'-7"38'-3"

18'-11"21'-0"19'-5"21'-7"21'-9"24'-1"21'-0"23'-4"21'-7"24'-0"24'-6"27'-0"

22'-10"25'-5"23'-6"26'-2"

26'-11"29'-8"24'-9"27'-6"24'-6"28'-4"29'-4"32'-5"26'-6"29'-5"27'-3"30'-3"31'-7"33'-7"

17'-11"19'-11"18'-4"20'-5"20'-2"22'-8"

19'-10"22'-1"20'-5"22'-9"

22'-11"25'-7"21'-7"24'-0"22'-2"24'-9"25'-4"

26'-10"23'-5"26'-0"24'-1"26'-9"27'-9"

26'-10"25'-0"

26'-10"25'-9"

26'-10"29'-10"26'-10"

22'-8"25'-2"23'-2"25'-9"25'-5"28'-0"25'-2"

27'-11"25'-9"28'-7"28'-5"31'-3"27'-5"30'-5"28'-0"31'-1"31'-1"35'-1"29'-8"33'-2"30'-4"34'-1"34'-6"39'-2"31'-9"36'-2"32'-6"37'-3"38'-1"43'-1"

21'-0"23'-4"21'-6"

23'-11"23'-3"26'-2"23'-4"

25'-11"23'-11"26'-7"26'-5"29'-4"25'-4"28'-2"26'-0"

28'-11"29'-2"32'-1"27'-6"30'-6"28'-2"31'-3"31'-9"36'-0"29'-4"32'-9"30'-1"

33'-10"34'-9"39'-9"

20'-0"22'-2"20'-5"22'-9"

21'-11"24'-8"22'-2"24'-7"22'-9"25'-3"

24'-10"28'-0"24'-1"26'-9"24'-9"27'-6"27'-6"30'-8"26'-1"29'-0"

26'-10"29'-9"30'-3"33'-7"

27'-11"30'-11"28'-8"

31'-10"32'-9"33'-7"

18'-10"20'-11"19'-3"21'-6"20'-4"

22'-10"20'-10"23'-2"21'-5"

23'-10"23'-1"26'-5"22'-8"25'-2"23'-4"

25'-11"25'-6"

26'-10"24'-7"

26'-10"25'-3"

26'-10"28'-2"

26'-10"26'-3"

26'-10"27'-0"

26'-10"30'-5"

26'-10"


Floor Framing &Construction DetailsFloor Framing and Construction Details

1. Before laying out floor system components,verify that IB I-joist flange widths matchhanger widths. If not, contact your supplier.

2. Except for cutting to length, never cut, drill,or notch IB I-joist flanges.

3. Install IB I-joists so that top and bottomflanges are within ½ inch of true verticalalignment.

4. IB I-joists must be anchored securely tosupports before floor sheathing is attached,and supports for multiple-span joists mustbe level.

5. Minimum bearing lengths: 1¾ inches forend bearings and 3 ½ inches for intermediatebearings.

6. When using hangers, seat IB I-joists firmlyin hanger bottoms to minimize settlement.

7. Leave a ¹⁄₁₆ inch gap between the IB I-joistend and a header.

8. Concentrated loads greater than those thatcan normally be expected in residentialconstruction should only be applied to thetop surface of the top flange. Normalconcentrated loads include track lightingfixtures, audio equipment and securitycameras. Never suspend unusual or heavyloads from the IB I-joist’s bottom flange.

Whenever possible, suspend allconcentrated loads from the top of theIB I-joist. Or, attach the load to blockingthat has been securely fastened to the IBI-joist webs.

9. Never install IB I-joists where they will bepermanently exposed to weather, or wherethey will remain in direct contact withconcrete or masonry.

10. Restrain ends of floor joists to preventrollover. Use rim board or equivalent,rim joists or IB I-joist blocking panels.

11. For IB I-joists installed over and beneathbearing walls, use full depth blockingpanels, rim board, or squash blocks (cripplemembers) to transfer gravity loads throughthe floor system to the wall or foundationbelow.

12. Due to shrinkage, common framinglumber set on edge may never be used asblocking or rim boards. IB I-joist blockingpanels or other engineered wood products– such as rim board – must be cut to fitbetween the IB I-joists, and an IB I-joist-compatible depth selected.

13. Provide permanent lateral support of thebottom flange of all IB I-joists at interior

supports of multiple-span joists. Similarly,support the bottom flange of allcantilevered IB I-joists at the end supportnext to the cantilever extension. In thecompleted structure, the gypsum wallboardceiling provides this lateral support. Untilthe final finished ceiling is applied,temporary bracing or struts must be used.

14. If square-edge panels are used, edges mustbe supported between IB I-joists with 2x4blocking. Glue panels to blocking tominimize squeaks. Blocking is not requiredunder structural finish flooring, such aswood strip flooring, or if a separateunderlayment layer is installed.

15. Nail spacing:• Space nails installed to the flange’s top

face in accordance with the applicable building code requirements or approvedbuilding plans.

• If nails must be installed into the sides of flanges, spacing shall not be closer than 3 inches o.c. for 8d common nails, and 4 inches o.c. for 10d common nails.

Installation Notes

Holes may be cut in web forplumbing, wiring and duct work.NOTE: Never cut or notch flanges.

Use code approved hangers

Glulam or multipleStructural CompositeLumber (SCL)headers

Glulam or multipleSCL headers

Some framing requirements such aserection bracing and blocking panelshave been omittedfor clarity.

1M1K1J1H1F1N1A

1G1E

1J

1C1B

1D

P A G E 1 0I N T E R N A T I O N A L B E A M S

FloorFraming DetailsFloor Framing and Construction Details

1B

One 8d nail at top andbottom flange

Attach rim board totop plate using 8d boxtoenails @ 6" o.c.

One 8d facenail at eachside at bearing

To avoid splitting flange, start nails at least1 ½" from end of IB I-joist. Nails may be drivenat an angle to avoid splitting of bearing plate.

For APA Rimboard Plus,1⅛" thick, up to 24" depthallowable factored verticalload transfer = 8090 plf.

1C

Attach rim joist totop plate per 1A

Rim joistvertical load transfer(see detail 1A for capacities)

Attach rim joist tofloor joist with one nailat top and bottom. Nailmust provide 1 inchminimum penetrationinto floor joist. Toe nailsmay be used.

Minimum 1 ¾ �"bearing required

Attach IB I-joistper 1B

1D

Squash block

Provide lateral bracingper 1A, 1B, or 1C

Rim boardblocking panel per 1a

"for lumbersquashblocks

Vertical load transfer capacity per pair of squash blocks as shown:

Maximum factoredvertical load per pair of

squash blocks (lb)

2x LumberPair of Squash Blocks

1⅛" APA Rim board, Rim BoardPlus, or Rated Sturd-I-Floor 48 oc1" APA Rim Board orRated Sturd-I-Floor 32 oc

5800

4500

9500

5800

4000 5800

1E

Transfer loadfrom aboveto bearing below.Install squash blocksper 1D. Match bearingarea of blocks belowto post above.

1F

Rim board may be used in lieu of IB I-joists.Backer is not required when rim board is used.

Provide backerfor sidingattachmentunless nailablesheathing is used.

Wallsheathing,as required

For single I-Joist, see detail 1A for capacities. For double I-Joist, the table capacity may be doubled. Filler block is not required for this detail.

1A

Attach IB I-joistto top plate per 1B

8d nails @ 6" o.c.(when used for lateral sheartransfer, nail to bearingplate with same nailing asrequired for decking)

1G

Blocking panelfor vertical load transfercapacity, see detail 1A

Blockingrequired overall interiorsupports

8d nailsat 6" o.c.

Joist attachmentper detail 1B

Load bearing wall above shall align verticallywith the wall below. Other conditions such asoffset walls are not covered by this detail.

All nails shown in the details below are assumed to be common nails unless otherwise noted. 10d box nails may be substituted for 8d common shown in details.Individual components not shown to scale for clarity.

BlockingPanel orRim Jost

Maximum Factored UniformVertical Load (plf)

depth(inches)

IB400

3340

N/AN/A

IB600

3340

29202500

IB800 1⅛" IB OSBRimboard

3340

30202710

IB900

3340

30202710

8090up to 16

1820

⁄

3½" wide 5½" wide

P A G E 1 1 I N T E R N A T I O N A L B E A M S

FloorFraming DetailsFloor Framing and Construction Details

1J Glulam or multiple structural compositelumber (SCL) beams

For nailing schedulesfor multiple SCL beams,see the manufacturer‘srecommendations

Note: Unless hanger sides laterally support the top flange,bearing stiffeners shall be used.

Top- or face-mounted hanger installedper manufacturer‘s recommendations

1M 1N

Filler block

Backer block attach per 1H.Nail with twelve 10d nails,clinch when possible.

Do not bevel-cut joist beyondinside faceof wall

AttachIB I-joistper 1B

Note: Blocking required atbearing for lateral support,not shown for clarity.

Maximum factored support = 1620 lbs

Install framing anchorper manufacturer‘srecommendations(both sides of stringer)

Multiple IB I-joist header withfull depth filler block shown.Glulam and multiple SCLheaders may also be used.Verify double IB I-joist capacity tosupport concentrated loads.

1H

Flange Width Material Thickness Required* Minimum Depth**

2 "

3 "

½ ½5 "

½ ½ ¼7 "

* Minimum grade for backer block material shall be Utility grade SPF (south) or better for solid sawn lumber and Rated Sheathing grade for wood structural panels.

** For face-mount hangers use net joist depth minus 3-1/4".Backer block required(both sides for face-mounted hangers)

Filler block

Double IB I-joist header

For hanger capacity see hanger manufacturer’srecommendations. Verify double IB I-joist capacity tosupport concentrated loads.

Top- or face-mounted hanger

Note: Unlesshanger sideslaterally supportthe top flange,bearing stiffenersshall be used.

Backer blocks (Blocks must be long enough to permit required nailing without splitting)

1K 2x plate flush withinside face of wallor beam

Top-mounted hanger installedper manufacturer‘s recommendations

Note: Unless hangersides laterally supportthe top flange, bearingstiffeners shall be used.


1"1 "

Backer block (use if factored hanger load exceeds 360 lbs.) Before installing a backer block to a double I-joist, drive 3 additional 3" nails through the webs and filler block where the backer block will fit. Clinch. Install backer tight to top flange. Use twelve 3" nails, clinched when possible. Maximum factored resistance for hanger for this detail = 1620 lbs.


Web StiffenerRequirementsA web stiffener is a wood block that is usedto reinforce the web of an IB I-joist atlocations where:

• The webs of the IB I-joists are in jeopardyof buckling out of plane. This usuallyoccurs in deeper IB I-joists.

• The webs of the IB I-joist are in jeopardyof “knifing” through the IB I-joist flanges.This can occur at any IB I-joist depth whenthe design reaction loads exceed a specificlevel.

• The IB I-joist is supported in a hanger and the sides of the hanger do not extend up to the top flange. With the topflange unsupported by the hanger sides,the joist may deflect laterally, putting atwist in the flange of the joist. The webstiffener supports the IB I-joist along avertical axis as designed. (In this application,the web stiffener acts very much like abacker block.)

There are two kinds of web stiffeners:bearing stiffeners and load stiffeners. Theyare differentiated by the applied load and

location of the gap between the slightlyundersized stiffener and the top or bottomflange.

Bearing stiffeners are located at thereactions, both interior and exterior, whenrequired. IB I-joists do not need bearingstiffeners at any support when subjectedto normal residential form loads andinstalled in accordance with the allowablespans.

Load stiffeners are located betweensupports where significant point loads areapplied to the top flange of an IB I- joist.

Web stiffener blocks may be comprised oflumber, rim board, or structural woodpanels. The minimum grade of structuralwood panels is Rated Sheathing;minimum lumber grade is Utility gradeSPF (south) or better. Any rim boardproduct would also work satisfactorily.Ideally, the depth of the web stiffenershould equal the distance between theflanges of the joist minus ⅛ inch -¼ inch. For bearing stiffeners, this gap is

Notes: For I-Joist depths up to 16 inches, the number of nails in the web stiffeners may be reduced to four.

placed between the stiffener and thebottom of the top flange. For loadstiffeners, the gap is located at the bottomof the stiffener.

Gap

Tight JointNo Gap

Concentrated Load(Load stiffener)

End Bearing(Bearing stiffener)

±2"

±2"

⅛"-¼"Gap

Tight JointNo Gap

Gap

No Gap

use minimum of(6) 8d nails

Flange width2½�" or 3½�"

Web Stiffener Requirements

Web Stiffener Size Requirement

Designation Web Stiffener Size Each Side of Web

IB 400/600 1" x 2⁵⁄₁₆�" minimum width

IB 800/900 1½�" x 2⁵⁄₁₆�" minimum width

1. A bearing stiffener is required in allengineered applications which exceedthe "no stiffeners" factored reactionresistances indicated in table 1A onpage 4. The gapbetween the stiffener and the flange is atthe top. 2. A load stiffener is required at locations where a concentrated load greater than1500 lb. unfactored load is applied to the top flange between supports, or in the case of acantilever, anywhere between thecantilever tip and the support. The gapbetween the stiffener and the flange is atthe bottom. 3. A bearing stiffener is required when theIB I-joist is supported in a hanger and thesides of the hanger do not extend up to,and support, the top flange. The gapbetween the stiffener and flange is at top.

10d nails required for IB I-joists with 3½"flange width (IB800 and IB900)


CantileverFraming DetailsCantilever Detail for Balconies

L/44' maximum,where L isjoist span

Lumber Cantilever Detail for Balconies

Cantilever Detail for Vertical Building Offset

L4' maximum,where L is lengthof cantilever

1½" x L4' minimum

CAUTION: Cantileversformed this way must becarefully detailed to preventmoisture intrusion into thestructure and potentialdecay of untreatedIB I-joist extensions. 3½" min. bearing required

Rim board,or woodstructural panel

IB I-joist, orrim board

Cantilever extension supportinguniform floor loads only

Attach IB I-joiststo plate at allsupports perDetail 1B

Blocking panel or rim board

blocking, attachper Detail 1G

Rim board or wood structural panelclosure (²³⁄₃₂" minimum thickness),attach per Detail 1B

3½" min.bearing required

Use same installation as Method 1 butreinforce both sides of IB I-joist with sheathing

Use nailing pattern shownfor Method 1 with opposite

face nailing offset by 3"

6"

8d nails

Attach IB I-joist to plate per

Detail 1B

Method 2Sheathing Reinforcement Two Sides

Method 1Sheathing Reinforcement One Side

Strength axis

Strength axis

2'- 0"maximum

2'- 0"minimum

2 x 8 min. Nail to backer block and joist with2 rows of 10d nails @ 6" o.c. and clinch.(Cantilever nails may be used to attachbacker block if length of nail is sufficientto allow clinching.)

Cantileverextensionsupportinguniformfloor loadsonly

Full depth backer block with ⅛" gap between block and top flange of IB I-joist.See Detail 1H. Nail with 2 rows of 10d nails @ 6" o.c. and clinch.

IB I-joist, or rim board

3½" min. bearing required

Lumber or woodstructural panelclosure

Attach IB I-joiststo plate at allsupports perDetail 1B

See cantilever reinforcement chart for appropriate reinforcement method.


Flange JoistSeries

JoistDepth

FillerDepth

FillerThicknessWidth

2½" IB 400/600 9½"

IB 400/600 11⅞"

2⅛"

3⅛"

6"

8"

10"

12"

14"

16"

6"

8"

10"

12"

14"

16"

IB 400/600 14"

IB 400/600 16"

IB 600 18"

IB 600 20"

3½"

IB 800/900 11⅞"

IB 800/900 11⅞"

IB 800/900 14"

IB 800/900 16"

IB 800/900 18"

IB 800/900 20"

CantileverFraming DetailsCantilever Detail for Vertical Building Offset

Double Joist Construction Filler Block Requirements forDouble Joist Construction

Figure A

Blocking panel or rim boardblocking, attach per Detail 1G

Block IB I-joists together withfiller blocks for the fulllength of the reinforcement.For IB I-joist flange widthsgreater than 3 inchesplace an additional rowof 10d nails along thecenterline of the reinforcingpanel from each side.Clinch when possible.

Rim board, or wood structuralpanel closure ( ⁄" minimumthickness), attach per Detail 1B

Attach IB I-joists to top plateat all supports per Detail 1B3½" min. bearing required

Alternate Method 2Double IB I-joist

2'- 0"maximum

Filler blocking perTable A

Offset nailsfrom oppositeface by 6"

⅛" gapbetween topflange andfiller block

12"

4'- 0"minimum

See double IB I-joist constructiondetail - Figure A

Notes:1. Support back of IB I-joist web during nailing to prevent damage to web/flange connection. 2. Leave a ⅛" gap between top of filler block and bottom of top IB I-joist flange. 3. Filler block is required between joists for full length of span. 4. Nail joists together with three rows of 10d nails at 12” o.c. (clinched when possible on each side of the double IB I-joist. Total of 6 nails per foot required. If nails can be clinched, only 3 nails per foot are required. For I-Joist depths up to 16 inches, rows of nails may be reduced to 2 rows, total of 4 nails per foot (2 nails per foot if clinched). 5. Where discrete BACKER blocks are used for side-applied point loads (see detail 1H), and the remaining length of a 2-ply IB I-joist girder is top-loaded, the FILLER block need not be continuous. Install minimum 3-1/2" long FILLER blocks at maximum 4' o.c. spacing using a minimum of (6) nails from each face.

See cantilever reinforcement chart for appropriate reinforcement method.

Table A

+

+

+

+

+

+

( ) designates nails from near face(+) designates nails from far face

Legend


CantileverReinforcement

Notes:1. N= No reinforcement required. 1= IB I-joists reinforced with ²³⁄₃₂" wood structural panel or rim board on one side only. 2= IB I-joists reinforced with ²³⁄₃₂" wood structural panel or rim board on both sides, or double IB I-joist. X= Try a deeper joist or closer spacing.

2. Maximum load shall be: 15 psf roof dead load, 50 psf floor total load, and 80 plf wall load. Wall load is based on 3'-0" maximum width window or door openings. For larger openings, or multiple 3'-0" width openings spaced less than 6'-0" o.c., additional joists beneath the opening’s cripple studs may be required.

3. Table applies to joists 12" to 24" o.c. Use 12" o.c. requirements for lesser spacings.

4. For conventional roof construction using a structural ridge beam, the Roof Truss Span column above is equivalent to the horizontal distance between the supporting wall and the ridge beam. When the roof is framed using a ridge board (non-structural ridge element), the Roof Truss Span is equivalent to the horizontal distance between the supporting walls as if a truss is used.

20"

Cantilever Reinforcement Chart (all IB I-Joist Series)ROOF DESIGN LOADS

RoofTrussSpan

ft.262830323436262830323436382628303234363840262830323436384042

12 16 19.2 24 12 16 19.2 24 12 16 19.2 24

JoistDepth(in.)

9½"

11⅞"

14"

16"

262830323436384042442628303234363840424446

18"

TL= 35 psf(Snow up to 20 psf, DL= 15 psf)

I-Joist Spacing (in.)





See Table below forIB I-joist reinforcementrequirements at cantilever.

For hip roofs with the hip trusses running parallel to thecantilevered floor joists, the IB I-joist reinforcement requirementsfor a span of 26 ft. shall be permitted to be used.

2'–0"maximum

Roof truss span

Floor spans in accordancewith tables on pages 13 and 14

2'–0"maximum

HiptrussesGirder

truss

Roof trusses 13'–0"maximum

Roof truss span

NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN


NNNN11NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN11NNNNNNN1111

111122NNNN111NNN11111NN1111111N11111111111111111112


NNNN11NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN11

111112NNNNN11NNNNN111NNNN11111NNN1111111NNN11111111

222XXX111111211111112111111222111112222211111222222


N11112NNNNN11NNNNNN11NNNNNN111NNNNN11111NNNN1111111

12222XN111111NN111111N11111111111111112211111111222

XXXXXX112222X1112222211222222211222222XX12222222XXX


Web Hole GuidelinesMinimum distance from face of support to the center of hole. See chart below.

2x diameterof larger hole

3/4xdiameter

See Note 12

Typical Holes

Allowable Webhole Sizes and Locations

Minimum Distance from Inside Face of Any Support to Center of Web Hole (Simple or Multi-span)

IB I-joist top and bottom flanges must never be cut, notched, or otherwise modified.Holes in web should be cut with a sharp saw. For rectangular holes, avoid over-cutting the corners,as this can cause unnecessary stress concentrations. Slightly rounding the corners is recommended.Starting the rectangular hole by drilling a 1" diameter hole in each of the 4 corners and thenmaking the cuts between the holes is another good method to minimize damage to I-joist.

Notes:

1. Table may be used for I-joist spacing 24 inches on center or less.

2. Hole location distance is measured from inside face of supports to center of hole.

3. Distances in this chart are based on uniformly loaded joists.

4. Joists with web hole location and/or sizes that fall outside of the scope of this table

must be analyzed based on the actual hole size, joist spacing, span and loading condition.

The I-joist shear capacity at the location of the circular web hole is calculated using the

following equation: V(round hole)

= Published Shear Value x [(Joist Depth -

Hole Diameter)/ Joist Depth. SAF = Span adjustment factor, used as defined below

OPTIONAL: This table is based on I-joists being used at their maximum span. If the I-joists are placed at less than their full allowable span, the maximum distance from the centerline of the hole to the face of any support (D), as given above may be reduces as follows:

Dreduced = Lactual/SAF x D

Where:

Dreduced

= Distance from the inside face of any support to center of hole, reduced for less than maximum span applications (ft). The reduced distance must not be less than 6-inches from the face of support to edge of hole

Lactual

= The actual measured span distance between the inside faces of supports (ft)

SAF = Span Adjustment Factor given above

D = The minimum distance from the inside face of any support to center of hole given above.

If Lactual

/SAF is greater than 1, use 1 in the above calculation for Lactual

/SAF

5. I-joist top and bottom flanges must NEVER be cut, notched, or otherwise modified.

6. Whenever possible field-cut holes should be centered on the middle of the web.

7. The maximum size hole that can be cut into an I-joist web shall equal the clear distance

between the flanges of the I-joist minus 1/4 inch. A minimum of 1/8 inch should be maintained

between the top or bottom of the hole and the adjacent I-joist flange.

8. The sides of square holes or longest sides of rectangular holes should not exceed three

fourths of the diameter of the maximum round hole permitted at the location.

9. Where more than one hole is necessary, the distance between adjacent hole edges shall exceed

twice the diameter of the largest round hole or twice the size of the largest square hole (or twice

the length of the longest side of the longest rectangular hole) and each hole must be sized and

located in compliance with the requirements of the table above.

10. A knockout is not considered a hole, may be utilized anywhere it occurs and may be ignored

for purposes of calculating minimum distances between holes.

11. 1-1/2" holes shall be permitted anywhere in a cantilevered section of an IB Joist. Holes of

greater size may be permitted subject to verification.

12. A 1-1/2" hole can be placed anywhere in the web provided that it meets the

requirements of 9 above.

13. For joists with more than one span, use the longest span to determine hole

location in either span.

14. All holes shall be cut in a workman-like manner in accordance with the restrictions listed

above and as illustrated in figure above.

15. A group of round holes at approximately the same location shall be permitted if they meet

the requirements for a single round circumscribed around them.

16. Refer to International Beams Design Software for other hole sizes and locations.

40 psf Live Load, 15 psf Dead Load (1¾" end bearings, 3½" interior without bearing stiffeners, see Tables 2 thru 5 for maximum spans)

Round Hole Diameter (inches)

32SAF 4 5 6 6¼ 7 8 8 ⅝ 9 10 10¾I-JoistDepth

I-JoistSeries

9½"

11⅞"

14"

16"

18"

20"

11 12 12 ¾

IB 400IB 600IB 800IB 400IB 600IB 800IB 900IB 400IB 600IB 800

IB 900IB 400IB 600IB 800

IB 900IB 600IB 800IB 900IB 600

IB 800IB 900

0'-7"1'-5"2'-5"0'-7"0'-7"1'-9"0'-7"0'-7"0'-7"1'-9"

0'-8"0'-7"0'-7"2'-4"

0'-7"0'-7"1'-10"0'-7"0'-7"

1'-7"0'-7"

1'-9"2'-8"3'-8"0'-8"1'-6"2'-11"1'-4"0'-8"0'-8"3'-0"

1'-11"0'-8"0'-8"3'-6"

1'-8"0'-8"3'-1"1'-4"0'-9"

2'-9"1'-2"

2'-11"3'-11"5'-0"1'-4"2'-8"4'-2"2'-10"1'-2"1'-9"4'-4"

3'-2"0'-11"1'-4"4'-8"

3'-0"1'-2"4'-5"2'-6"1'-6"

3'-10"2'-6"

4'-3"5'-4"6'-7"2'-6"3'-11"5'-5"4'-4"2'-3"3'-1"5'-8"

4'-6"1'-10"2'-8"5'-11"

4'-5"2'-0"5'-8"3'-9"2'-2"

5'-0"3'-10"

5'-7"7'-1"8'-5"3'-9"5'-5"7'-0"6'-0"3'-4"4'-5"7'-1"

5'-10"2'-9"4'-1"7'-2"

5'-11"3'-2"7'-0"5'-3"3'-0"

6'-2"5'-2"

6'-0"7'-7"

8'-10"4'-1"

5'-10"7'-5"6'-5"3'-7"4'-9"7'-6"

6'-3"3'-0"4'-5"7'-5"

6'-3"3'-6"7'-4"5'-8"3'-2"

6'-6"

5'-6"

5'-1"7'-1"8'-8"7'-8"4'-5"

5'-10"8'-7"

7'-3"3'-9"5'-6"8'-5"

7'-5"4'-5"8'-4"6'-9"4'-2"

7'-5"

6'-6"

6'-6"8'-10"10'-6"9'-6"5'-7"7'-7"

10'-2"

8'-9"5'-0"7'-0"

9'-10"

8'-11"5'-10"9'-9"8'-5"5'-8"

8'-8"7'-11"

7'-9"10'-0"11'-9"10'-9"6'-4"8'-8"

11'-2"

9'-10"5'-9"

7'-11"10'-10"

9'-11"6'-11"10'-8"9'-5"6'-7"

9'-5"8'-10"

6'-10"9'-5"

11'-9"

10'-7"6'-3"8'-6"

11'-5"

10'-6"7'-7"

11'-2"10'-0"7'-2"

10'-0"9'-5"

8'-6"11'-4"13'-6"

12'-7"7'-7"

10'-2"13'-1"

12'-3"9'-4"

12'-8"11'-8"8'-9"

11'-8"10'-11"

10'-4"12'-11"15'-0"

14'-2"8'-7"

11'-6"14'-5"

13'-6"10'-9"

13'-10"13'-0"10'-0"

13'-0"12'-0"

9'-0"12'-0"

14'-10"

14'-0"11'-2"14'-3"13'-6"10'-5"

13'-5"12'-5"

11'-2"14'-4"16'-9"

15'-10"13'-1"

15'-10"15'-4"12'-1"

15'-2"14'-0"

12'-11"16'-2"18'-6"

17'-6"14'-8"17'-2"16'-9"13'-4"

16'-7"15'-3"

14'-1"15'-4"16'-9"16'-1"18'-1"19'-11"20'-5"17'-8"18'-1"21'-10"

23'-2"18'-1"18'-1"22'-5"

24'-3"18'-1"22'-5"24'-3"18'-1"

22'-5"24'-3"


Roof Installation Guidelines

Roof Framing &Construction Details

1. Installation of IB I-joists must be as shown indetails 2A- 2L.

2. Except for cutting to length, or for providingbirdsmouth bearings as detailed in detail 2H,IB I-joist top or bottom flanges should NEVERbe cut, drilled or notched.

3. IB I-joists are permitted to be birdsmouth cutat the lower end of the joist only. Thebirdsmouth cut must have full bearing andnot overhang the inside face of the plate.Bearing/web stiffeners are required at thebirdsmouth cut on both sides of the web.

4. When beveled bearing plates are used at IBI-joist supports, IB I-joist attachment to thebevel plate must be designed to transfer lateralthrust.

5. Concentrated loads should only be appliedto the top surface of the top flange. At notime should concentrated loads be suspendedfrom the bottom flange, with the exceptionof light loads (lighting fixtures, ceiling fans,etc.).

6. IB I- joists must be protected from the weatherprior to installation.

7. IB I-joists must not be used in places wherethey will permanently exposed to weather(overhangs are exceptionally vulnerable) orin areas where they will reach a moisturecontent greater than 16%, such as in a

swimming pool or hot-tub enclosure. Theymust not be installed where they will be in directcontact with concrete or masonry.

8.

9. Ends of roof joists must be restrained at thebearing to prevent rollover. Rim board orIB I-joist blocking panels are preferred.Cantilever-end blocking must be placed atthe support adjacent to the cantilever, andends of all cantilever extensions must belaterally braced by a fascia board or othersimilar method.

10. Rim board, IB I-joist blocking panels, or othermeans of providing lateral support must beprovided at all IB I-joist bearing points.

11. Continuous lateral support of the IB I-joist'scompression flange is required to preventrotation and buckling. In simple span roofapplications, lateral support of the top flangeis normally supplied by the roof sheathing.Bracing of the IB I- joist’s bottom flange is alsorequired at interior supports of multiple-spanjoists and at the end support next to an

overhang. Lateral support of the entire bottomflange may be required in cases of load reversalsuch as those caused by high wind.

12. Nails installed perpendicular to the wide faceof the flange must be spaced in accordancewith the applicable building coderequirements or approved building plans butshould not be closer than 3 in. o.c.per row using 8d common nails.

13.

14. The top and bottom flanges of the IB I-joistmust be kept within½ in. of true alignment.The use of IB I-joist blocking panels or engineered wood rim board greatlysimplifies this requirement.

15. All roof details are valid up to 12:12 slopeunless otherwise noted.

2A

2B 2C

2D

2G

2H 2I 2J 2K

Roof Framing and Construction DetailsBlocking panels not shown for clarity.

APA rated OSB sheathing or equal.

Nail according toAPA recommendations

Temporaryconstructionbracing

End-bearing length must be at least 1¾ in.For continuous framing and roof framing with cantilevers, the immediate supportand end bearing adjacent to the cantilever both must be at least 3½ in. For multiple-span joists, intermediate bearing length must be at least 3½ in. If IB I-joists are oriented so that the knockouts

provide by the manufacturer are adjacent to the top flange, they may be removed to aid ventilation.


RoofFraming Details

2AMinimum attachment:

For slope ≤ ¼ :12, one10d box nail at each side of

bearing. For slope> ¼ :12design joist attachment

to beveled plate totransfer lateral

thrust.

Attached beveled plateto framing with

1 - 16d at 16" o.c.

2BFor roof slopes between ¼ :12 and 12:12,

provide a strap wrapped aroundridge beam

Ridge beam(Glulamor LVL)

Adjustable SlopeHanger with a

minimum unadjusteduplift capacity of 300 lbunfactored resistance.

Beveledbearingstiffenerrequiredeach side.

2C

Adjustable Slope Hangerwith a minimumunadjusted upliftcapacity of 300 lb.

Beveled bearing stiffenerrequired each side

For roof slopes between ¼ :12 and 12:12,provide a strap wrapped

around ridge beam

Ridge beam(Glulamor LVL)

2D

Note: Additional connection may be required for wind uplift.

" x 2' 0" wood structural panel(front and back sides) with 12-8d

nails into each joist with nailsclinched. When roof live load

exceeds 40 psf, horizontalorientation of gusset strong

axis is required.Gap ⅛�" at top.

Blocking panelor x-bridging.Attach perFig. 2A

Support beam or wall

Attachper Fig. 2A

Attach bevelled plateto framing with1 -16d at 16" o.c.

2ERafter Connection withOverlapping IB I-joists

8-8d nails eac h side

Filler block 8 8dnails 4 each side

Support beamor wall

Blocking panel,attach per Fig. 2A

Filler block

Attach each IB I-joistto beveled top plateper Fig. 2A

Attach bevel plate to beamor wall per Fig. 2D

2F

Bearing stiffeners requiredwhen hanger does NOTsupport IB I-joist top flange

Application limitedto 4:12 pitch or less

Backer block. If top mountedhanger is fully supported by topflange, backer block only required on hanger side. If face nailingis required, then second backer block (filler block if multipleIB I-joist is required. Nail with 10 -10d nails for flanges up to 1¼"wide. Use 12-10d nails for flanges wider then 1¼"

Top mounted hanger permanufacturer's

recommendations

Filler blocking(attach per

Fig. 1H)

Roof Opening Top MountedHangers

IB I-joist Connection withWood Structural PanelGussets

IB I-joist to RidgeBeam Connection

Upper End, Bearing on Wall Peak Construction

Roof Framing and Construction Details - Residential Construction

8d nails @ 6" o.c.- minimum3-8d nails per blocking

panel (when used for lateral sheartransfer, match nail type andsheathing edge nailing "boundarynailing" for engineereddiaphragm applications)Use minimum 8d nails.

Beveled plate for slopes greater than ¼ :12.Code-recognized connectors may besubstituted. For slopes greater than 4:12connectors are required to resist lateral thrust.

Blocking panel, x-bridging, or "sheathing 48/24 as continous closure.


⁄

⁄

Bearing stiffener requiredwhen end reaction exceeds the "no stiffeners" factoredreaction resistances indicated in table 1A on page 4.


RoofFraming Details

2GRoof Opening, Face-Mounted Hangers

Backer block on both sides ofweb (or backer block and fillerblock, if multiple IB I-joists, nailwith 12-10d nails clinchwhen possible.

Header may be IB I-joist,LVL, glulam, or lumber

Bearing stiffeners required whenhanger does not supportIB I-joist top flange.

Filler blocking(attach per

Fig. 1H)

Face-mount hangerper hanger

manufacturer'srecommendation

2HBirdsmouth Cut & Bevel Cut Bearing Stiffener

Bearing stiffeners requiredeach side of IB I-joist.Bevel cut bearingstiffener to matchroof slope.

6-8d nails (three each side)clinched when possible.For I-Joist depths up to 16", the number of nails in the web stiffeners may be reduced to four.

Birdsmouth cut shall bear fully andnot overhang the inside face of plate.

⅛" gap at top

One 10d box nail,face nail at each

side of bearing(face nail where

flange is ⅞" to1" thick)

2IBirdsmouth Cut with Overhang (Permitted on low end of IB I-joist only)

Bearing stiffenerrequired each side.

Attach joist to topplate per Fig. 2H

Birdsmouth cutat bearing

Note: Additional connection may be required for wind uplift. Outsidecorner of blocking panel may be trimmed if it interferes with roofsheathing. In such cases, position blocking panel on top plate tominimize trimming and still allow required nailing into top plate.

Blocking panel or x-bridging.

Bearing stiffener (shown on blocking

panel side only)

Attach blockingper Fig. 2A

⅛" gap at top2J

Blocking Panel at Beveled Plate

Attach IB I-joist to bevelledplate per Fig. 2ABlocking Panel

attach per Fig. 2A

OverhangBevelled

plate

Note: Additional connectionmay be required for wind uplift.

2KIB I-joist with Bevel-Cut End

Do not bevel-cut joistbeyond inside face of wall

Attach perFig. 2A

Note: Blocking orx-bridging requiredat bearing for lateralsupport, not shownfor clarity. Additionalconnection may berequired for wind uplift.

2LOutrigger

Notch 2x outriggeraround IB I-joist

Do not notch IB I-joist flange

Block between outriggers

End wall

Maximum overhangsame as rafter spacing

(not to exceed 2'-0")

Toe nailblocking to end wall

for roof sheathing ≤ ⅜�".Match nail type and spacing

with roof sheathing edge nailing.Use minimum 8d nails.

Note: Additional connectionmay be required for wind uplift.

Roof Framing and Construction Details - Residential ConstructionAll nails shown in the details below are assumed to be common nails unless otherwise noted. 10d box nails may be substituted for 8d common shown in details.Individual components not shown to scale for clarity.

2'- 0"maximum

Permitted on lowend of IB I-joist only

+

+

+

( ) designates nails from near face(+) designates nails from far face

Legend


Table 7 - Maximum Roof Spans30 psf Unfactored Snow Load, 15 psf Unfactored Dead Load

Maximum Residential Roof SpansI-Joist Slope of ¼:12 to 4:12 Slope of >4:12 to 8:12 Slope of >8:12 to 12:12

12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.DepthDeflection

Criteria SeriesL/360 LLL/240 LLL/360 LLL/240 LLL/360 LLL/240 LLL/360 LLL/240 LL

L/360 LLL/240 LLL/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LLL/360 LLL/240 LLL/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

9½"

11⅞"

14"

16"

9½"

11⅞"

14"

16"

18"

20"

9½"

11⅞"

14"

16"

18"

20"

11⅞"

14"

16"

18"

20"

IB 400

IB 600

IB 800

IB 900

20'-11"22'-11"25'-00"27'-02"28'-05"29'-10"31'-07"32'-01"22'-01"24'-03"26'-05"29'-00"30'-01"33'-00"33'-05"36'-08"36'-07"40'-01"39'-05"42'-03"24'-08"27'-01"29'-05"32'-04"33'-05"36'-08"37'-00"40'-08"40'-08"44'-08"43'-09"48'-01"30'-04"33'-03"34'-05"37'-10"38'-02"41'-11"41'-11"45'-11"45'-04"49'-09"

18'-11"20'-08"22'-07"23'-06"25'-09"25'-10"27'-09"27'-09"20'-00"22'-00"23'-11"26'-03"27'-03"29'-11"30'-03"32'-08"33'-01"34'-09"35'-08"36'-06"22'-03"24'-06"26'-07"29'-03"30'-03"33'-03"33'-06"36'-10"36'-10"40'-05"39'-08"43'-06"27'-05"30'-01"31'-02"34'-03"34'-07"37'-11"37'-11"41'-08"41'-01"45'-01"

17'-09"18'-10"21'-03"21'-05"23'-07"23'-07"25'-04"25'-04"18'-09"20'-08"22'-05"24'-08"25'-07"27'-08"28'-05"29'-09"31'-01"31'-08"33'-04"33'-04"20'-11"23'-00"25'-00"27'-05"28'-05"31'-02"31'-05"34'-07"34'-07"37'-08"37'-02"39'-09"25'-09"28'-03"29'-03"32'-02"32'-05"35'-07"35'-07"39'-01"38'-07"42'-04"

20'-11"22'-07"25'-00"26'-07"28'-05"29'-02"31'-05"31'-05"22'-01"23'-11"26'-05"28'-06"30'-01"32'-06"33'-05"36'-01"36'-07"39'-04"39'-05"41'-04"24'-08"26'-07"29'-05"31'-09"33'-05"36'-01"37'-00"40'-00"40'-08"43'-11"43'-09"47'-03"30'-04"32'-09"34'-05"37'-02"38'-02"41'-02"41'-11"45'-02"45'-04"48'-11"

16'-05"16'-10"19'-02"19'-02"21'-00"21'-00"22'-08"22'-08"17'-04"19'-01"20'-09"22'-06"23'-07"24'-09"26'-03"26'-08"28'-04"28'-04"29'-10"29'-10"19'-04"21'-03"23'-01"25'-05"26'-03"28'-10"29'-01"31'-09"31'-11"33'-08"34'-05"35'-06"23'-09"26'-02"27'-00"29'-09"30'-00"32'-11"32'-11"35'-07"35'-08"37'-08"

18'-11"20'-02"22'-07"23'-00"25'-03"25'-03"27'-03"27'-03"20'-00"21'-07"23'-11"25'-10"27'-03"29'-05"30'-03"32'-00"33'-01"34'-00"35'-08"35'-09"22'-03"24'-01"26'-07"28'-09"30'-03"32'-08"33'-06"36'-02"36'-10"39'-09"39'-08"42'-07"27'-05"29'-07"31'-02"33'-08"34'-07"37'-04"37'-11"40'-11"41'-01"44'-04"

17'-09"18'-05"21'-00"21'-00"23'-01"23'-01"24'-10"24'-10"18'-09"20'-03"22'-05"24'-03"25'-07"27'-01"28'-05"29'-02"31'-00"31'-00"32'-08"32'-08"20'-11"22'-07"25'-00"27'-00"28'-05"30'-08"31'-05"34'-00"34'-07"36'-11"37'-02"38'-11"25'-09"27'-10"29'-03"31'-07"32'-05"35'-00"35'-07"38'-05"38'-07"41'-08"

16'-05"16'-06"18'-09"18'-09"20'-07"20'-07"22'-02"22'-02"17'-04"18'-09"20'-09"22'-01"23'-07"24'-02"26'-01"26'-01"27'-09"27'-09"29'-02"29'-02"19'-04"20'-11"23'-01"24'-11"26'-03"28'-04"29'-01"31'-01"31'-11"33'-00"34'-05"34'-09"23'-09"25'-08"27'-00"29'-03"30'-00"32'-05"32'-11"34'-01"35'-08"36'-01"

20'-11"21'-04"25'-00"25'-06"28'-04"28'-04"30'-07"30'-07"22'-01"22'-07"26'-05"27'-00"30'-01"30'-08"33'-05"34'-01"36'-07"37'-04"39'-05"40'-02"24'-08"25'-02"29'-05"30'-00"33'-05"34'-01"37'-00"37'-10"40'-08"41'-06"43'-09"44'-08"30'-04"30'-11"34'-05"35'-02"38'-02"39'-00"41'-11"42'-09"45'-04"46'-03"

18'-11"19'-04"22'-04"22'-04"24'-07"24'-07"26'-05"26'-05"20'-00"20'-05"23'-11"24'-05"27'-03"27'-09"30'-03"30'-10"33'-01"33'-01"34'-09"34'-09"22'-03"22'-09"26'-07"27'-02"30'-03"30'-11"33'-06"34'-03"36'-10"37'-07"39'-08"40'-05"27'-05"28'-00"31'-02"31'-10"34'-07"35'-03"37'-11"38'-09"41'-01"41'-11"

17'-09"17'-11"20'-05"20'-05"22'-05"22'-05"24'-01"24'-01"18'-09"19'-02"22'-05"22'-11"25'-07"26'-01"28'-04"28'-04"30'-02"30'-02"31'-09"31'-09"20'-11"21'-04"25'-00"25'-06"28'-05"29'-00"31'-05"32'-01"34'-07"35'-03"37'-02"37'-10"25'-09"26'-03"29'-03"29'-10"32'-05"33'-01"35'-07"36'-04"38'-07"39'-04"

16'-00"16'-00"18'-03"18'-03"20'-00"20'-00"21'-07"21'-07"17'-04"17'-09"20'-09"21'-02"23'-06"23'-06"25'-04"25'-04"26'-11"26'-11"28'-04"28'-04"19'-04"19'-09"23'-01"23'-07"26'-03"26'-09"29'-01"29'-08"31'-11"32'-00"33'-09"33'-09"23'-09"24'-03"27'-00"27'-07"30'-00"30'-07"32'-02"32'-02"34'-01"34'-01"

Notes:1. Allowable clear span applicable to simple-scan roof construction with unfactored design snow and dead load as specified. The maximum span is based on the horizontal distance between inside face of supports (exception: to centerline of 3½" support at cantilever ends only).2. The strength limit states are based on the factored loads of 1.50L + 1.25D. The serviceability limit states include the consideration of unfactored live load deflection limit of L/360 (with plaster or gypsum board ceiling) OR L/240 (suspended ceiling or other). Total load deflection limit is based on unfactored total load at L/180 deflection criteria.3. Additional considerations: NO composite action with the sheating; NO vibration analysis; Alternate limit state of 20 psf net wind uplift normal to the surface with L/360 live load deflection limit.4. Spans include a cantilever of up to 24" at one end of the IB I-joist.5. Minimum bearing length shall be 1¾" for end bearing and 3½" for bearing adjacent to cantilever. When bearing adjacent to cantilever is greater than 3½", measure span to 1¾" from outside face of bearing (see also exception in note 1).6. Bearing stiffeners are not required when I-joists are used with the spans given in this table, except as required by hanger manufacturers.7. This span table is based on uniform loads and Limit State Design (LSD) per CSA 086-01. For applications with other than uniformly distributed loads, or other applications beyond the scope of the indicated design criteria, an engineering analysis may be required based on the use of the design properties accepted in the CCMC 12768-R evaluation report. Design properties are also indicated in table 1 at the front of the design manual. For technical support, contact International Beams (IB) or your local IB distributor.


Maximum Residential Roof SpansTable 8 - Maximum Roof Spans

40 psf Unfactored Snow Load, 15 psf Unfactored Dead Load

I-Joist Slope of ¼:12 to 4:12 Slope of >4:12 to 8:12 Slope of >8:12 to 12:1212" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.Depth

DeflectionCriteria SeriesL/360 LLL/240 LLL/360 LLL/240 LLL/360 LLL/240 LLL/360 LLL/240 LL

L/360 LLL/240 LLL/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LLL/360 LLL/240 LLL/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

L/360 LLL/240 LL

9½"

11⅞"

14"

16"

9½"

11⅞"

14"

16"

18"

20"

9½"

11⅞"

14"

16"

18"

20"

11⅞"

14"

16"

18"

20"

IB 400

IB 600

IB 800

IB 900

Notes:1. Allowable clear span applicable to simple-scan roof construction with unfactored design snow and dead load as specified. The maximum span is based on the horizontal distance between inside face of supports (exception: to centerline of 3½" support at cantilever ends only).2. The strength limit states are based on the factored loads of 1.50L + 1.25D. The serviceability limit states include the consideration of unfactored live load deflection limit of L/360 (with plaster or gypsum board ceiling) OR L/240 (suspended ceiling or other). Total load deflection limit is based on unfactored total load at L/180 deflection criteria.3. Additional considerations: NO composite action with the sheating; NO vibration analysis; Alternate limit state of 20 psf net wind uplift normal to the surface with L/360 live load deflection limit.4. Spans include a cantilever of up to 24" at one end of the IB I-joist.5. Minimum bearing length shall be 1¾" for end bearing and 3½" for bearing adjacent to cantilever. When bearing adjacent to cantilever is greater than 3½", measure span to 1¾" from outside face of bearing (see also exception in note 1).6. Bearing stiffeners are not required when I-joists are used with the spans given in this table, except as required by hanger manufacturers.7. This span table is based on uniform loads and Limit State Design (LSD) per CSA 086-01. For applications with other than uniformly distributed loads, or other applications beyond the scope of the indicated design criteria, an engineering analysis may be required based on the use of the design properties accepted in the CCMC 12768-R evaluation report. Design properties are also indicated in table 1 at the front of the design manual. For technical support, contact International Beams (IB) or your local IB distributor.

18'-11"21'-05"22'-07"24'-06"25'-09"26'-10"28'-07"28'-11"20'-00"22'-08"23'-11"27'-01"27'-03"30'-10"30'-03"34'-00"33'-01"36'-02"35'-08"38'-00"22'-03"25'-03"26'-07"30'-02"30'-03"34'-03"33'-06"38'-00"36'-10"41'-08"39'-08"44'-11"27'-05"31'-01"31'-02"35'-04"34'-07"39'-02"37'-11"42'-11"41'-01"46'-06"

17'-01"18'-07"20'-05"21'-02"23'-03"23'-03"25'-00"25'-00"18'-01"20'-06"21'-08"24'-06"24'-07"27'-04"27'-04"29'-05"29'-11"31'-03"32'-03"32'-11"20'-02"22'-10"24'-01"27'-04"27'-04"31'-00"30'-04"34'-04"33'-04"37'-02"35'-10"39'-02"24'-09"28'-01"28'-02"32'-00"31'-03"35'-05"34'-04"38'-11"37'-02"42'-01"

16'-00"16'-11"19'-02"19'-04"21'-02"21'-02"22'-10"22'-10"16'-11"19'-03"20'-03"22'-08"23'-01"24'-11"25'-08"26'-10"28'-01"28'-07"30'-00"30'-00"18'-10"21'-05"22'-07"25'-07"25'-08"29'-01"28'-05"32'-00"31'-03"33'-11"33'-08"35'-09"23'-03"26'-05"26'-05"30'-00"29'-03"33'-03"32'-03"36'-01"34'-11"38'-02"

14'-10"15'-02"17'-03"17'-03"18'-11"18'-11"20'-05"20'-05"15'-08"17'-10"18'-09"20'-03"21'-04"22'-03"23'-09"24'-00"25'-06"25'-06"26'-10"26'-10"17'-05"19'-10"20'-10"23'-08"23'-08"25'-05"26'-03"27'-01"28'-10"28'-10"30'-06"30'-06"21'-05"24'-05"24'-05"27'-07"27'-01"27'-07"28'-10"28'-10"30'-06"30'-06"

18'-11"21'-01"22'-07"24'-01"25'-09"26'-05"28'-05"28'-05"20'-00"22'-04"23'-11"26'-09"27'-03"30'-05"30'-03"33'-05"33'-01"35'-06"35'-08"37'-05"22'-03"24'-11"26'-07"29'-09"30'-03"33'-10"33'-06"37'-06"36'-10"41'-02"39'-08"44'-04"27'-05"30'-08"31'-02"34'-10"34'-07"38'-07"37'-11"42'-04"41'-01"45'-11"

17'-01"18'-03"20'-05"20'-10"22'-10"22'-10"24'-07"24'-07"18'-01"20'-03"21'-08"24'-02"24'-07"26'-10"27'-04"28'-11"29'-11"30'-09"32'-03"32'-04"20'-02"22'-07"24'-01"26'-11"27'-04"30'-07"30'-04"33'-11"33'-04"36'-07"35'-10"38'-07"24'-09"27'-09"28'-02"31'-06"31'-03"34'-11"34'-04"38'-04"37'-02"41'-07"

16'-00"16'-08"19'-00"19'-00"20'-10"20'-10"22'-05"22'-05"16'-11"19'-00"20'-03"22'-04"23'-01"24'-06"25'-08"26'-04"28'-01"28'-01"29'-06"29'-06"18'-10"21'-02"22'-07"25'-03"25'-08"28'-09"28'-05"31'-05"31'-03"33'-04"33'-08"35'-02"23'-03"26'-00"26'-05"29'-07"29'-03"32'-10"32'-03"34'-10"34'-11"36'-11"

14'-10"14'-11"17'-00"17'-00"18'-07"18'-07"20'-01"20'-01"15'-08"17'-06"18'-09"19'-11"21'-04"21'-11"23'-07"23'-07"25'-01"25'-01"26'-05"26'-05"17'-05"19'-07"20'-10"23'-04"23'-08"24'-06"26'-02"26'-02"27'-10"27'-10"29'-06"29'-06"21'-05"24'-01"24'-05"26'-08"26'-08"26'-08"27'-10"27'-10"29'-06"29'-06"

18'-11"20'-07"22'-07"23'-06"25'-09"25'-09"27'-09"27'-09"20'-00"22'-00"23'-11"26'-03"27'-03"29'-10"30'-03"32'-07"33'-01"34'-08"35'-08"36'-06"22'-03"24'-06"26'-07"29'-03"30'-03"33'-02"33'-06"36'-09"36'-10"40'-05"39'-08"43'-06"27'-05"30'-01"31'-02"34'-03"34'-07"37'-11"37'-11"41'-07"41'-01"45'-01"

17'-01"17'-10"20'-04"20'-04"22'-04"22'-04"

24'-00"24'-00"18'-01"19'-10"21'-08"23'-09"24'-07"26'-02"27'-04"28'-03"29'-11"30'-00"31'-07"31'-07"20'-02"22'-02"24'-01"26'-05"27'-04"30'-01"30'-04"33'-03"33'-04"35'-08"35'-10"37'-08"24'-09"27'-03"28'-02"30'-11"31'-03"34'-04"34'-04"37'-08"37'-02"40'-10"

16'-00"16'-03"18'-06"18'-06"20'-04"20'-04"21'-11"21'-11"16'-11"18'-08"20'-03"21'-09"23'-01"23'-11"25'-08"25'-09"27'-05"27'-05"28'-10"28'-10"18'-10"20'-09"22'-07"24'-10"25'-08"28'-02"28'-05"30'-08"31'-03"32'-07"33'-08"34'-04"23'-03"25'-06"26'-05"29'-00"29'-03"31'-09"32'-03"33'-03"34'-11"35'-02"

14'-06"14'-06"16'-07"16'-07"18'-02"18'-02"19'-07"19'-07"15'-08"17'-01"18'-09"19'-06"21'-04"21'-04"23'-00"23'-00"24'-06"24'-06"25'-09"25'-09"17'-05"19'-02"20'-10"22'-11"23'-05"23'-05"24'-11"24'-11"26'-07"26'-07"28'-02"28'-02"21'-05"23'-07"24'-05"25'-05"25'-05"25'-05"26'-07"26'-07"28'-02"28'-02"


Table 9 - Maximum Roof Spans50 psf Unfactored Snow Load, 15 psf Unfactored Dead Load

Maximum Residential Roof SpansI-Joist Slope of ¼:12 to 4:12 Slope of >4:12 to 8:12 Slope of >8:12 to 12:12

12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c. 12" o.c. 16" o.c. 19.2" o.c. 24" o.c.Depth DeflectionCriteria Series

L/360 LL

L/240LL

L/360 LL

L/240LLL/360 LL

L/240LL

L/360 LLL/240LL

L/360 LL

L/240LL

L/360 LL

L/240LL

L/360 LL

L/240LL

L/360 LL

L/240LL

L/360 LL

L/240LL

L/360 LL

L/240LLL/360 LL

L/240LL

L/360 LL

L/240LL

L/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LLL/360 LL

L/240LL

9½"

11⅞"

14"

16"

9½"

11⅞"

14"

16"

18"

20"

IB 400

IB 600

9½"

11⅞"

14"

16"

18"

20"

IB 800

11⅞"

14"

16"

18"

20"

IB 900

Notes:

1. Allowable clear span applicable to simple-scan roof construction with unfactored design snow and dead load as specified. The maximum span is based on the horizontal distance between inside face of supports (exception: to centerline of 3½" support at cantilever ends only).2. The strength limit states are based on the factored loads of 1.50L + 1.25D. The serviceability limit states include the consideration of unfactored live load deflection limit of L/360 (with plaster or gypsum board ceiling) OR L/240 (suspended ceiling or other). Total load deflection limit is based on unfactored total load at L/180 deflection criteria.3. Additional considerations: NO composite action with the sheating; NO vibration analysis; Alternate limit state of 20 psf net wind uplift normal to the surface with L/360 live load deflection limit.4. Spans include a cantilever of up to 24" at one end of the IB I-joist.5. Minimum bearing length shall be 1¾" for end bearing and 3½" for bearing adjacent to cantilever. When bearing adjacent to cantilever is greater than 3½", measure span to 1¾" from outside face of bearing (see also exception in note 1).6. Bearing stiffeners are not required when I-joists are used with the spans given in this table, except as required by hanger manufacturers.7. This span table is based on uniform loads and Limit State Design (LSD) per CSA 086-01. For applications with other than uniformly distributed loads, or other applications beyond the scope of the indicated design criteria, an engineering analysis may be required based on the use of the design properties accepted in the CCMC 12768-R evaluation report. Design properties are also indicated in table 1 at the front of the design manual. For technical support, contact International Beams (IB) or your local IB distributor.

17'-06"

19'-08"

20'-11"

22'-05"

23'-10"

24'-07"

26'-05"

26'-06"

18'-06"

21'-04"

22'-02"

25'-06"

25'-02"

28'-11"

28'-00"

31'-02"30'-08"

33'-02"

33'-00"

34'-10"

20'-07"23'-09"

24'-07"

28'-04"

28'-00"32'-03"

31'-00"

35'-09"

34'-01"

39'-03"36'-08"

41'-07"

25'-04"29'-03"

28'-10"

33'-03"

31'-11"36'-10"

35'-01"

40'-05"38'-00"

43'-09"

15'-10"

17'-00"

18'-11"

19'-05"

21'-04"

21'-04"

22'-11"

22'-11"

16'-09"

19'-03"

20'-00"

22'-10"

22'-09"

25'-00"

25'-03"

27'-00"27'-08"

28'-08"

29'-10"

30'-02"

18'-07"21'-06"

22'-03"

25'-08"

25'-03"29'-02"

28'-00"

32'-02"

30'-09"

34'-01"33'-02"

36'-00"

22'-11"26'-05"

26'-00"

30'-01"

28'-10"33'-04"

31'-09"

36'-05"34'-05"

38'-07"

14'-10"

15'-06"

17'-08"

17'-08"

19'-05"

19'-05"

20'-11"

20'-11"

15'-08"

18'-01"

18'-09"

20'-10"

21'-04"

22'-10"

23'-09"

24'-07"26'-00"

26'-02"

27'-06"

27'-06"

17'-05"20'-02"

20'-10"

24'-01"

23'-08"26'-09"

26'-03"

28'-06"

28'-10"

30'-04"31'-01"

32'-01"

21'-05"24'-09"

24'-05"

28'-02"

27'-01"29'-00"

29'-09"

30'-04"32'-01"

32'-01"

13'-08"

13'-10"

15'-10"

15'-10"

17'-04"

17'-04"

18'-09"

18'-09"

14'-05"

16'-04"

17'-04"

18'-07"

19'-08"

20'-05"

21'-11"

22'-00"23'-05"

23'-05"

24'-07"

24'-07"

16'-01"17'-10"

19'-03"

21'-02"

21'-04"21'-04"

22'-09"

22'-09"

24'-03"

24'-03"25'-08"

25'-08"

19'-09"22'-11"

22'-06"

23'-02"

23'-02"23'-02"

24'-03"

24'-03"25'-08"

25'-08"

17'-06"

19'-05"

20'-11"

22'-01"

23'-10"

24'-03"

26'-02"

26'-02"

18'-06"

21'-02"

22'-02"

25'-04"

25'-02"

28'-06"

28'-00"

30'-09"30'-08"

32'-08"

33'-00"

34'-04"

20'-07"23'-07"

24'-07"

28'-02"

28'-00"32'-00"

31'-00"

35'-06"

34'-01"

38'-10"36'-08"

40'-11"

25'-04"29'-00"

28'-10"

33'-00"

31'-11"36'-07"

35'-01"

40'-01"38'-00"

43'-05"

15'-10"

16'-09"

18'-11"

19'-02"

21'-00"

21'-00"

22'-07"

22'-07"

16'-09"

19'-02"

20'-00"

22'-06"

22'-09"

24'-08"

25'-03"

26'-07"27'-08"

28'-03"

29'-09"

29'-09"

18'-07"21'-04"

22'-03"

25'-06"

25'-03"28'-11"

28'-00"

31'-08"

30'-09"

33'-07"33'-02"

35'-05"

22'-11"26'-03"

26'-00"

29'-10"

28'-10"33'-01"

31'-09"

35'-05"34'-05"

37'-06"

14'-10"

15'-04"

17'-05"

17'-05"

19'-02"

19'-02"

20'-08"

20'-08"

15'-08"

18'-00"

18'-09"

20'-06"

21'-04"

22'-06"

23'-09"

24'-03"25'-10"

25'-10"

27'-02"

27'-02"

17'-05"20'-00"

20'-10"

23'-11"

23'-08"25'-11"

26'-03"

27'-08"

28'-10"

29'-06"31'-01"

31'-02"

21'-05"24'-07"

24'-05"

28'-00"

27'-01"28'-02"

29'-06"

29'-06"31'-02"

31'-02"

13'-08"

13'-08"

15'-07"

15'-07"

17'-01"

17'-01"

18'-05"

18'-05"

14'-05"

16'-01"

17'-04"

18'-04"

19'-08"

20'-01"

21'-08"

21'-08"23'-01"

23'-01"

24'-03"

24'-03"

16'-01"17'-04"

19'-03"

20'-07"

20'-09"20'-09"

22'-01"

22'-01"

23'-07"

23'-07"24'-11"

24'-11"

19'-09"22'-06"

22'-06"

22'-06"

22'-06"22'-06"

23'-07"

23'-07"24'-11"

24'-11"

17'-06"

19'-00"

20'-11"

21'-08"

23'-09"

23'-09"

25'-07"

25'-07"

18'-06"

20'-10"

22'-02"

24'-11"

25'-02"

27'-11"

28'-00"

30'-01"30'-08"

32'-00"

33'-00"

33'-08"

20'-07"23'-03"

24'-07"

27'-09"

28'-00"31'-06"

31'-00"

34'-11"

34'-01"

38'-01"36'-08"

40'-02"

25'-04"28'-07"

28'-10"

32'-06"

31'-11"36'-00"

35'-01"

39'-06"38'-00"

42'-09"

15'-10"

16'-05"

18'-09"

18'-09"

20'-07"

20'-07"

22'-02"

22'-02"

16'-09"

18'-10"

20'-00"

22'-00"

22'-09"

24'-02"

25'-03"

26'-01"27'-08"

27'-09"

29'-02"

29'-02"

18'-07"21'-00"

22'-03"

25'-01"

25'-03"28'-06"

28'-00"

31'-00"

30'-09"

32'-11"33'-02"

34'-09"

22'-11"25'-10"

26'-00"

29'-04"

28'-10"32'-06"

31'-09"

34'-00"34'-05"

36'-00"

14'-10"

15'-00"

17'-01"

17'-01"

18'-09"

18'-09"

20'-03"

20'-03"

15'-08"

17'-08"

18'-09"

20'-01"

21'-04"

22'-01"

23'-09"

23'-09"25'-03"

25'-03"

26'-07"

26'-07"

17'-05"19'-08"

20'-10"

23'-06"

23'-08"24'-11"

26'-03"

26'-07"

28'-04"

28'-04"30'-00"

30'-00"

21'-05"24'-02"

24'-05"

27'-01"

27'-01"27'-01"

28'-04"

28'-04"30'-00"

30'-00"

13'-05"

13'-05"

15'-03"

15'-03"

16'-09"

16'-09"

18'-01"

18'-01"

14'-05"

15'-09"

17'-04"

17'-11"

19'-08"

19'-09"

21'-03"

21'-03"22'-07"

22'-07"

23'-09"

23'-09"

16'-01"16'-08"

19'-03"

19'-09"

19'-11"19'-11"

21'-03"

21'-03"

22'-08"

22'-08"23'-11"

23'-11"

19'-09"21'-07"

21'-07"

21'-07"

21'-07"21'-07"

22'-08"

22'-08"23'-11"

23'-11"


CriteriaPractice601.2 3

601.4 Detailed framing plans/cut list 2601.5 Pre-cut components 4606.1 6

606.2 A minimum of two certified wood based products are used in a major element of the building.

FSC certified products 4

606.3 Manufacturing energy From renewable resources 2607.1 Resource EfficientMaterials Engineered wood 3608.1 Indigenous materials (500 mi) Available onlyincertain regions 2609.1 Life cycle analysis 3 pts per product, 15 pts for building 3901.4 Indoor environmental quality Contains no urea formaldehyde 4

IB Points Under Program 33

LEED 2009 New Construction and Major Renovations Criteria Description IB Points

MR 5 Regional Materials Available only in certain regions 1MR 7 Renewable materials FSC certified product 1IEQ 4.4 Indoor environmental quality low emitting materials 1


GREEN GLOBES – DESIGN FOR NEW BUILDINGS AND RETROFITS 2004Criteria Description IB Points

10.1.1.1 Low impact systems and materials Life cycle analysis 1010.3.2.1 Minimal consumption of resources FSC certified 612.2.1 Control of indoor pollutants Low VOC emitting(formaldehyde) 310.1.2.1 Assemblies Bio-based products 210.1.4.1 Transportation (500 miles) Certain regions 16.2.2.1 Building materials Wood protected at job site and in

transit1

10.6.1.1 Conservation through design Efficient use of materials 1


The Green Building Solution

IB products are among the most environmentally friendly building products available. The components used in our manufacturing process are harvested from certified sustainable forests.Our manufacturing facility is FSC registered.

The following is a list of potential points attainable by using IB products under each of the three major green standards. Our products can also contribute to other point categories that are project or site specific. If you have questions relating to green points please contact us at [email protected] or 866 457-4043.

National Green Building Standard ICC 700-2008IB PointsDescription

Material usage

Material usage Material usage Bio-based Products are used

Building code compliant structuralsystems or advanced framing techniques.

Wood is the world's most renewable,sustainable,and environmentally friendly

building product available.

ResidentialFraming Connectors


JoistHeight

(inches)

Joist Width = 2 ½"9½ ITS2.56/9.5

2 1⁷⁄₁₆ (6) 10d(3) NONE(2) 175

2½ 2⁵⁄₁₆ (8) 10d(3) (2)10dx1½ 535

1723 17231942 19421972 20951972 2209--- 2370--- 2446

IB400 IB600

IB800 IB900

1375

1900

ITS2.56/11.88ITS2.56/14ITS2.56/16

11⅞1416

MIT31818MIT32020

Joist Width = 3 ½"

2 1⁷⁄₁₆ (6) 10d(3) NONE(2) 175

1723 ---

2050 2280

2095 2280

2209 22802370 24542446 2530

1375

2½ 2⁵⁄₁₆ (8) 10d(3) (2)10dx1½ 535 1900

ITS3.56/9.5

ITS3.56/11.88

ITS3.56/14

ITS3.56/16

9½

11⅞14

16MIT41818

MIT42020

FactoredUplift

Resistance(2)

DF(K

D=1.15)

Factored Down LoadResistance(4)

(K

=1.0)

DF LVLSPF

I-Joist(3)

BDim.

(inches)

TFDim.

(inches)D

Notes:1. Increased capacity may be possible with substituted nails. See Simpson C-CAN08 catalog for all other conditions.2. Uplift capacity may be increased with optional nails. See Simpson C-CAN08 catalog.3. When I-joist is used as a header, all header nails must be 10dx1 ½".4. Table capacities are for without bearing stiffeners. Higher capacities may be possible with bearing stiffeners.5. 2½" hanger seat for 18" and 20" depths. All other entries in this table are for 2" hanger seat.

Single International Beams Joists - Canadian LSD (factored lbs.)(1)

HIT

Face Mount (Snap-In)

Top Mount

JoistHeight

(inches)

Joist Width = 2 ½"9½ IUS2.56/9.5

2 NONE(2) 145

2½

(8) 10d(10) 10d(12) 10d(14) 10d(26) 16d(28) 16d

(2)10dx1½ 375

1723 17231942 19421972 20951972 2209--- 2370--- 2446

IB400 IB600

IB800 IB900

IUS2.56/11.88IUS2.56/14IUS2.56/16

11⅞1416

MIU2.56/1818MIU2.56/2020

Joist Width = 3 ½"

2 NONE(2) 145

1723---

2050 2301

2095 2301

2209 23012369 24542446 2531

2½ (2)10dx1½ 375

IUS3.56/9.5

IUS3.56/11.88

IUS3.56/14

IUS3.56/16

9½

11⅞14

16MIU3.56/1818

MIU3.56/2020

FactoredUplift

Resistance(2)

DF(K

D=1.15)

Factored Down Load Resistance(4)

(K

=1.0)

DF LVL

BDim.

(inches)D

(10) 10d(12) 10d

(12) 10d(14) 10d(26) 16d(28) 16d


Storage, Handling& Safety GuidelinesTo assure optimum performance and safehandling, International Beams I-joistsmust be stored and applied properly. Thefollowing guidelines will help protectjoists from damage in storage, duringshipment, and on the construction site,and protect the installer from jobsiteinjury.

Storage and Handling1. Store, stack and handle IB I-joists

vertically and level only.

2. Do not store IB I- joists in direct contact with ground and or flatwise.

3. Protect IB I-joists from the weather,and use stickers to separate bundles.

4. When handling IB I-joists with a craneon the job site (“picking”), take a fewsimple precautions to prevent damageto the IB I-joists and injury to youwork crew.• Pick IB I-joists in bundles as shipped

by supplier.• Orient the bundles so that the webs

of the IB I-joists are vertical.• Pick the bundles at the 5th points,

using a spreader bar if necessary.

5. To further protect IB I-joists from dirtand weather, do not open bundlesuntil time of installation.

6. Take care not to damage IB I- joists with forklifts or cranes.

7. Do not twist or apply loads to theIB I-joist when horizontal.

8. Never use or try to repair a damagedIB I-joist.

Safety TipsA.

B.

IB I-joists are not stable until completely installed, and will not carry any load until fully braced andsheathed.

Do not allow workers to walk on

IB I-joists until joists are fully installedand braced, or serious injuriescan result.

C.

Never stack building materials over unsheathed IB I-joists. Stack onlyover beams or walls.

LL 5

L 5

Illustration 1 Illustration 2

Illustration 3 Illustration 4

Illustration A Illustration B


Notes

International Beams Inc.Sales and Marketing Office418 St-DizierMontreal, Quebec, Canada H2Y 3P8Tel: 514-849-4849 Fax: 514-849-1958Toll Free Customer Service 1-866-457-4043www.internationalbeams.com

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