Seating Facts

7/29/2019 Seating Facts

1/21

Hussey Seating Company38 Dyer Street Ext.nNorth Berwick, ME 03906 USA

tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Table of Contents

Products for Construction and Expansion Joints

Products for ADA Compliance

Floor and Riser Design Requirements/ Guidelines

Chair Sizing Chart

Row Spacing Chart

Sightline Formula

Prole Drawings

*All metric conversions are centimeters and are listed in ( ).


2/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Construction and

Expansion Joints

The size and placement of Construction and Expansion Joints are critical components to the design and cost of a

seating installation. The following descriptions of these joints are taken from The Architectural Graphics Standard.

Expansion (Isolation) Joints:

These allow movement between the concrete slab and

xed parts of the building such as columns or walls.

Construction Joints:

These joints provide stopping places during the oor

construction. These elements must be taken into

consideration in order to have a successful seating

layout. Each of these joints has a signicant impact on

the particular cost and design for installation.

Horizontal Construction Joints:

These joints are in the concrete riser and are a concern

with riser mount chairs. The concrete is usually pre-cast

(but not always). The location of the joint or the height

of the riser from the deck to the joint are the critical

dimensions. When working on a job with this type of

joint, the riser height and the location of rebar have cost

implications. Special anchors may be required.

(Note: Our cast iron riser mount standards come in

3 sizes to accommodate a low, mid and high rise

situation. Due to cost of materials, the low rise standard

is the most expensive and thehigh rise standard is theleast expensive.) Details of this joint are critical at time

of pricing!

Hussey Seating uses an oset plate to anchor the chairs

without altering the seating plan. The oset plate osets

the anchors enough to clear the joint. There is the

possibility that if one chair is oset, all chairs in that row

may be oset.

Vertical Construction Joints:

There are several options available to accommodate

joints that span a deck of seating.

The most cost eective method is with a carrier plate.Usually only one chair is aected by this anchoring

method. This permits movement of the building without

damaging the chairs.


3/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Products for

ADA Compliance

Hussey Seating Company oers several responses to the requirements for handicap accessibility and seating.

Flip-Up Armrests:

This adaptation is designed to eliminate a barrier for

disabled patrons. The armrest is actually hinged near

the rear to swing up and become parallel with the back.

Each chair with a Flip-Up Armrest is denoted by the

universal handicap symbol for identication purposes.

This option is available on all three plastic chairs

models. It is not available on the Sentinel automate or

semi-automate. A removable armrest is a similar option,

which is available on the (steel) Olympiad.

Armless Chairs:

Some of our chairs do not accommodate the

modications listed here as well as others. To comply

with the requirements of ADA and to meet the needs

of handicap patrons, some chairs are available without

armrests. This option is available on all three plastic

chair models.

Swing Away Companion Chair

This chair is a single, xed chair that rotates 90 degrees

from the ambulatory spectator position to allow for a

patron seated in a wheelchair. Essentially, the xed

chair swings away to provide room for the wheelchair.

There is a lock mechanism, which locks the chair inboth the fore and aft positions. Presently, this option is

not available with the Medallion.


4/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Floor & Riser Design

Requirements/Guidelines

General Design Notes:

All oor, slabs and Risers constructed of concrete (pre-cast or poured) must meet the following criteria:

All concrete must have a minimum strength of 3000 P.S.I. or 20,684 N/M Sq. for proper anchor attachment.

All oors constructed of wood must be 1 " (3) thick minimum.

All anchors are supplied by Hussey Seating Company unless otherwise noted. If anchors are to be sup-

plied by someone other that Hussey Seating Company, notication must be made during the submittal

process.

Hardware and Drill Hole Requirements:

The minimum radius of 25 (762) is the primary limitation for a radius project. A smaller radius will require

the use of individual chairs.

ADA - American Disabilities Act:

Maximum length of a sloped oor is 30" (914) after which there must be a level of 5" (152)


5/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Chair Sizing

The chart assists in determining the chair sizes needed in a seating arrangement. The dimension for end spaces

has been factored into these calculations. However, the following chart will provide these dimensions.

Chair Series End Dimension

Fusion 2" (5)

Legend 2" (5)

To use the Chair Size Chart, follow these procedures:

1. Determine the space available for each row. [The chart automatically calculates a 2" (5) spacing at each

end of the row. If you require 3" (8), you must factor the dierence in.]

2. Read down the column marked "feet" and then across the top marked "inches" and nd the appropriate

dimension.

3. Select the chair sizes from the suggested combinations.

4. Staggered seating may be achieved by using varying chair size combinations in alternate rows.

NOTE: Reference applicable building code to determine the maximum number of seats allowed in a row.


6/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Floor & Riser Design

Requirements/Guidelines

Overall Spacing of Chairs (Back to Back)

Number of Seating

Rows (Spaces + 1)

Row Space Dimensions

32 33 34 35 36 37 38 39 40 41 42

2 28 29 210 211 3 31 32 33 34 35 36

3 54 56 58 510 6 62 64 66 68 610 7

4 8 83 86 89 9 93 96 99 10 103 106

5 108 11 114 118 12 124 128 13 134 138 14

6 134 139 142 147 15 155 1510 163 168 171 176

7 16 166 17 176 18 186 19 196 20 206 21

8 188 193 1910 205 21 217 222 229 234 2311 246

9 214 22 228 234 24 248 254 26 268 274 28

10 24 249 256 263 27 279 286 293 30 309 316

11 268 276 284 292 30 3010 318 326 334 342 35

12 294 303 312 321 33 3311 3410 359 368 377 386

13 32 33 34 35 36 37 38 39 40 41 42

14 348 359 3610 3711 39 401 412 423 434 445 456

15 374 386 398 4010 42 432 444 456 468 4710 49

16 40 413 426 439 45 463 476 489 50 513 526

17 428 44 454 468 48 494 508 52 534 548 56

18 454 469 482 497 51 525 5310 553 568 581 596

19 48 496 51 526 54 556 57 586 60 616 63

20 508 523 5310 555 57 587 602 619 634 6411 666

21 534 55 568 584 60 618 634 65 668 684 70

22 56 579 596 613 63 649 666 683 70 719 736

23 688 606 624 642 66 6710 698 716 734 752 77

24 614 633 652 671 69 7011 7210 749 768 787 806

25 64 66 68 70 72 74 76 78 80 82 84

26 668 689 7010 7211 75 771 792 813 834 855 876

27 694 716 738 7510 78 802 824 846 868 8810 91

28 72 743 766 789 81 833 856 879 90 923 946

29 748 77 794 818 84 864 888 91 934 958 98

30 774 799 822 847 87 895 9110 943 968 991 1016

31 80 826 85 876 90 926 95 976 100 1026 105

See elevation drawings for dimensions

See elevation drawings for envelope dimensions4 rows (3 spces) at 33 = 8 3

4 rows (3 spces) at 33 = 8 3

EXAMPLE

ROWSPACE* SPACE*

*NOTES:

1. Refer to applicable building codes.

2. Spacing varies with tablet arm

applications. Consult Hussey

Engineers for details.

3. Row space dimensions will be

the sum of "clear space" (see

building codes) plus "chair

envelope" (see chair dimensions)

plus any additional space as

desired for convenience to

permit patron easy access to

concessions, restrooms, etc.

CLEAR


7/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Sightline Formula

Principle of Visibility

Line of Clear View for Spectator on Tiered

Seating:

Angle A: Angle of Perfect visibility; looking over allheads.

Angle B: Angle of Good visibility; shifting position to

look between heads on the row immediately in front of

the spectator and over all heads.

Angle C: Angle of Fair visibility; shifting position to

look between the heads of two rows immediately in

front of the spectators and over all other heads.

Denition:

The lower angle of angle C is approximately 5" (13)

above the eyes of the spectators in the third row in

front of the spectators. This angle C is called the angle

of clear view. The tangent of the angle of clear view =

3R-5"[13cm] / 3D, where R is the rise and D is the depth

per row (row spacing).

Head Level from the Floor 4'1" (124)

Eye Level from the Floor 3'8" (112)

Application:

The nal analysis being the perpendicular dimension

from the court line or the line of play to where the angle

of clear view intersects (focal point) should be as smallas possible.


8/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Principle of

Visibility

Angle B is commonly used in determining oor

slope for auditorium, performing arts or theatre type

seating congurations. When angle B prole is used

in conjunction with staggered seating arrangement

(chair staggered or alternated in arrangements of sizes

opposite every other row) it allows unobstructed view

of spectators to a determined focal point at the screenor stage. The nal analysis is to have all sight lines

intersect at the desired focal point.

Angle C is most commonly used in determining riser

or stepped applications for gymnasiums, arena or

stadium type seating congurations. When angle B

prole is used (generally associated with an aligned

seating arrangement) it allows for unobstructed view of

spectators to a determined focal point at court line or

line of play. The nal analysis is to have all the criticalsightlines intersect the focal point or line of play at

generally a maximum elevation of 4' (122).


9/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Sightline

Dimensions & Calculations

4'1" (124) = Top of head above seat (chair seating)

3'8" (112) = Eye level above deck (chair seating)

Step 1: Solve for angle C, angle of clear view.

Tan Angle C = (3 x Rise) - 5" (13cm) / 3 x Tread


10/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Sightline

Dimensions & Calculations

Step 4: Solve for Distance E

Using Trig function: Tangent = Opposite / Adjacent

Tangent of Angle C = Distance E / Distance B

Distance E = Tangent of Angle C x Distance B

Step 2: Solve for Distance A

Using Trig function: Tangent = Opposite/Adjacent

Tangent of Angle C = Distance D / Distance A

Distance A = Distance D / Tan Angle A

Step 3: Solve for Distance B

Distance B = Distance A - Distance


11/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Prole Drawings - Legend

Cast Iron Standard

FLOOR MOUNT ADA CHAIR WITH FLIP-UP ARM

CHAIR SIZELINE

1'-5"

10 1/16"

2'-8"

7 5/16"

1'-2"

1'-10 1/2"

ROW LABEL

SEAT LABEL


12/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

FLOOR MOUNT ADA CHAIR

CHAIR SIZELINE10 1/16"

1'-5"

2'-8"

7 5/16"

1'-10 1/2"

1'-2"

ROW LABEL

SEAT LABEL


13/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

FLOOR MOUNT

RISER

CHAIR SIZELINE

2'-8"

1'-5"

2'-0"

10 1/16"

7 5/16"

1'-2"

1'-10 1/2"

ROW LABEL

SEAT LABEL


14/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

CHAIR SIZELINE

LOW RISE INTERMEDIATE FLOOR MOUNT END

1'-2"

1'-10 1/2"

63/4"MIN.

RISERHEIGHT

2'-8"

2 3/4"

1'-5"

2'-0"

7 5/16"

ROW LABEL

SEAT LABEL


15/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

12

FLOOR MOUNT ENDMID RISE INTERMEDIATE

CHAIR SIZELINE

1'-2"

1'-10 1/2"

2 3/4"

2'-8"

7 5/16"

71/2"MIN.

RISERHEIGHT

2'-0"

1'-5"

ROW LABEL

SEAT LABEL


16/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

CHAIR SIZELINE

1'-10 1/2"

1'-2"

2'-8"

1'-2"MIN.R

ISERHEIGHT

7 5/16"

2 3/4"

1'-5"

2'-0"

HIGH RISE INTERMEDIATE FLOOR MOUNT END

ROW LABEL

SEAT LABEL


17/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs

Prole Drawings - Fusion

Cast Iron Standard

FLOOR MOUNT


18/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

LOW RISER MOUNT


19/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard

HIGH RISER MOUNT


20/21


tel +1 207.676.2271nfax +1 207.676.2222

[email protected]

03/12

Stadium Chairs


Cast Iron Standard


21/21


Stadium Chairs


Cast Iron Standard

Date post:	03-Apr-2018
Category:	Documents
Upload:	ayush-ahuja
View:	220 times
Download:	0 times

Seating Facts

Documents