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CorGrateFiberglass Systems

Fiberglass Systems

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CorGrate Fiberglass Grating

When unsurpassed corrosion protection and safety are needed, CorGrate delivers.

Countless companies representing a wide range of industries have benefited from the long service life and economy of CorGrate fiberglass grating. In challenging conditions, CorGrate delivers long, safe and reliable performance for pedestrian, and in specific cases, vehicular traffic - conditions where conventional metal grating has a short service life resulting in high replacement costs and unsafe operations.

As a leading manufacturer with a broad product line of pultruded and molded sections, CorGrate can provide an FRP grating ideal for virtually any application. Both CorGrate grating types provide outstanding protection against corrosion. Offering higher strength and stiffness, pultruded sections have the advantage in structural performance, with heavy duty sections suitable for tractor and trailer loads (HI Series). Either type of CorGrate is much lighter than its metal counterpart, resulting in reduced weight of structures and significant savings in installation costs.

CorGrate manufactures, designs and fabricates complete fiberglass structures that can range from tank loading and walkway platforms to handrails and ladders incorporating FRP grating, structural shapes, handrails and ladders. Designs fully utilize the unique strengths and economies of fiberglass reinforced plastic (FRP) structural shapes. Combining advanced design concepts, automated fabrication and specialized technical assistance CorGrate provides corrosion resistant FRP structures with life cycle cost advantages over protected metal structures.

All CorGrate fiberglass products are available as individual components or in complete systems fabricated by CorGrate and designed on state-of-the-art CAD equipment. Buyers and specifiers also receive the benefits of assistance from CorGrate’s knowledgeable and experienced sales and service personnel.

CorGrate fiberglass grating and related systems exemplify our commitment to deliver the best value for our customers. With innovative products and outstanding services, CorGrate designs, manufactures and fabricates its fiberglass to the highest standards.


CorGrate’s Value to Users

Features ValueOutstanding corrosion resistance,

high impact resistanceLong, low maintenance service life;

life cycle cost savingsSlip resistance, high strength,

non-conductivity Worker safety, reduced slips and falls

Lightweight Ease of handling; low installation costs; reduced weight of structures

Resiliency Better walking surface; worker comfortIntegral color, corrosion resistance Better appearance, reduced maintenance costs

Where to use FRP MaterialsCorrosive Environments - Compared to metals, CorGrate fiberglass materials deliver dramatic cost savings over the material’s life for operations involving chemicals or high moisture. In the toughest conditions, FRP materials exhibit long term retention of structural properties for enhanced safety.

Critical Weight Areas - FRP’s high strength to weight ratio means weigth savings, an added value for applications such as offshore platforms, rooftops and suspended catwalks where weight of the structure is a critical issue.

Electrical Areas - In high voltage areas, CorGrate’s non-conductive FRP materials provide protection against electrical shocks. FRP materials are ideal as guards against contact with exposed conductive elements such as railroad third rails. In addition, FRP materials are used as electrical work platforms for non-conductive walkways and as guards around electrical transformers, bus bars, and machinery.

Applications for FRP MaterialsCorGrate fiberglass products have delivered important value to a broad range of industries including:

• Chemical • Pulp and Paper• Refining • Marine and Offshore• Metal Treatment • Architectural• Mining • Food and Beverage• Electronics • Water and Wastewater Treatment• Recreation • and others....

Typical Uses for CorGrate GratingWhile new applications for fiberglass products are developed everyday, typical uses include:

• Walkways • Catwalks • Screening• Flooring • Ramps • Stairways• Stairs • Trench Covers • Mezzanines• Platforms • Assembly Lines • and more...

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Selecting Fiberglass Grating

Choose from a wide range of standard CorGrate styles.

Molded versus Pultruded Grating

Molded - With a high resin to glass ratio, (approximately 65% resin to 35% glass by weight) CorGrate molded grating is engineered to provide maximum corrosion resistance in tough conditions such as those found in pulp mills, chemical plants, plating operations and others. The interwoven square mesh construction for CorGrate molded grating results in bi-directional strength. This design, in many cases, eliminates the need for extra structural supports at penetrations that are required for rectangular mesh construction. This can be particularly important in complex process areas that have a large number of openings and penetrations.

Pultruded - Covering a wide range of conditions, CorGrate has the broadest line of pultruded gratings available today. Standard sizes are maintained in stock and can be fabricated to length by CorGrate to meet specific needs. The higher glass to resin ratio (approximately 35% resin to 65% glass by weight) of pultruded grating results in sections with higher structural properties than molded sections of similar depth and weight. Because of longer span capability, support structures can be reduced, resulting in lower total cost when using pultruded grating instead of molded. To significantly reduce scrap and thereby lower cost, pultruded gratings can be manufactured in custom length and widths for large projects. The corrosion resistance of pultruded grating is superior to galvanized steel, aluminum, or stainless steel. It is the ideal choice for applications with high load demands or long spans and moderate chemical exposure.

Application Requirements Molded (1”, 1-1/2”, 2”) Pultruded (1”, 1-1/2”, 2”) Pultruded HI SeriesCorrosion Protection Excellent Good Good

Lightweight vs Steel Excellent Excellent Excellent

Load/Span Capacity Good Excellent Excellent

H20 Loading Not Recommended Not Recommended Excellent (1)

Unidirectional Loads Good Excellent Excellent

Bidirectional Loads Excellent Not Recommended Not Recommended

Impact Resistance Excellent Good Excellent

Range of Sizes Good Excellent Excellent

Ease of Layout & Install Excellent Good Good

Open Area Flooring Excellent Excellent Excellent

(1) Refer to load/span tables for guidelines.These comparisons are for general guidelines only. Please contact your CorGrate representative for discussions regarding specific applications.

MOLDED GRATING PULTRUDED GRATING


Determine resin system based on product environment.

Resin Systems and Corrosion ProtectionCorGrate fiberglass gratings are furnished in three, fire retardant resin systems, each providing a different level of corrosion protection. CorGrate grating furnished in any standard resin system has a low flame spread rating of 25 or less when tested in accordance with ASTM E-84. Specific details and user recommendations for the resin system can be found in the chemical resistance guide on page 21.

Vinyl Ester (VF) is a vinyl ester resin system that provides the highest level of corrosion protection and demonstrates better retention of structural properties at elevated temperatures.

Isophthalic Polyester (PF) is a premium grade polyester resin designed for applications where there is moderate exposure (splash and spill) to corrosive elements in moderate temperature conditions.

General Purpose Polyester (GF) is an economy polyester that meets the corrosion resistance found in light industrial and water/wastewater applications. Both polyester resin systems are acceptable for use in food grade applications, per the United States Department of Agriculture.

Receive benefits of using CorGrate’s FRP materials.

Slip ResistanceFor molded grating the concave (meniscus) shaped top surface provides very good and durable slip resistance or CorGrate’s silica grit surfaces enhance slip resistant surfaces particularly in oily environments. For conditions with unusually high abrasion, CorGrate can furnish an aluminum oxide gritted surface (upon special request) for greater durability. A gritted top surface is standard for pultruded CorGrate sections at no additional charge, and optional for molded gratings for an additional charge. The slip resistant benefit of fiberglass grating offers excellent protection against slips and falls when compared to traditional metal grating.

Low MaintenanceFiberglass gratings require virtually no maintenance. Periodic cleaning with water or water containing a mild detergent is recommended to remove build-up or debris and/or foreign material. Avoid using high pressure and/or high temperature water, which could possibly remove and degrade the grit surface. Gratings which are fastened to supports with clips should be periodically checked and the loose clips tightened.


CorGrate Molded SM (Square Mesh) with its high resin to glass ratio provides the maximum corrosion protection of any CorGrate’s gratings. Unique to molded section, the bars are the same construction, depth, and spacing in both directions which results in equal strength in either direction. The top surface is skid resistant, meniscus (concave) surface, with an optional quartz or aluminum oxide grit.

Molded SM Series

UNIFORM LOADS - psf (Defl ection in Inches) CONCENTRATED LOADS - lbs/Ft of Width (Defl ection in Inches)Product Load/Span 18” 24” 30” 36” 42” 48” 54” 60” Load/Span 18” 24” 30” 36” 42” 48” 54”

1” SM

50 .02 .06 .13 .29 — — — — 200 .08 .19 .33 — — — —100 .04 .12 .26 — — — — — 300 .11 .28 .50 — — — —250 .08 .24 — — — — — — 500 .19 .46 — — — — —

Max Recommended Load 1260 710 450 310 — — — — Max Recommended Load 950 710 570 470 — — —Ultimate Capacity 3150 1770 1120 770 — — — — Ultimate Capacity 2370 1770 1420 1170 — — —

1-1/2” SM

50 .01 .01 .04 .10 .16 .27 .40 — 200 .03 .06 .11 .20 .30 .43 —100 .01 .03 .09 .19 .33 — — — 300 .05 .10 .17 .30 .45 — —200 .03 .06 .18 .38 — — — — 500 .08 .16 .28 — — — —

Max Recommended Load 2770 1600 1020 710 520 400 310 — Max Recommended Load 2130 1600 1280 1060 910 800 710Ultimate Capacity 6920 4000 2550 1770 1300 1000 770 — Ultimate Capacity 5320 4000 3200 2650 2270 2000 1770

2” SM

50 .01 .01 .02 .04 .08 .13 .20 .35 200 .02 .03 .05 .09 .14 .21 .28100 .01 .02 .04 .08 .15 .27 .40 — 300 .03 .05 .08 .13 .21 .32 .43200 .02 .04 .09 .17 .31 — — — 500 .05 .08 .13 .22 .34 — —

Max Recommended Load 2560 1920 1330 920 680 520 410 330 Max Recommended Load 2780 2090 1670 1390 1190 1040 920Ultimate Capacity 6400 4800 3320 2300 1700 1300 1020 820 Ultimate Capacity 6950 5220 4170 3470 2970 2600 2300

NOTES1. Defl ection for uniform loads is limited to L/120 with L representing clear span length in inches. For typical pedestrian traffi c, uniform load of 50 PSF is recommended with defl ection not to exceed .375”.2. Defl ections for concentrated loads are shown for the same span conditions as for uniform loads.3. Defl ection limits can be higher for fi berglass gratings as they are more resilient than metal materials.4. Maximum recommended loads have been determined by applying a 2.5 Factor of Safety (FOS) to the Ultimate Capacity of the grating.

Molded SM SeriesSection 1” SM 1-1/2” SM 2” SMDepth 1” 1-1/2” 2”Grid 1-1/2” x 1-1/2” 1-1/2” x 1-1/2” 2”

Panel Size3’ x 10’4’ x 8’

4’ x 12’

3’ x 10’4’ x 8’

4’ x 12’5’ x 10’

4’ x 12’

Wt/SF 2.5 lbs 3.8 lbs 4.2 lbsOpen Area 69% 69% 77%

Standard color for general purpose (GF) is dark gray or yellow. Standard color for isophthalic polyester (PF) is green or dark gray. Standard color for vinyl ester (VF) is orange or dark gray. All three resins have a fl ame spread rating of 25 or less.

Contact CorGrate for assistance with custom dimensions, colors, and fi nishes.

For 1” and 1-1/2” grating use SFM saddle clips.For 2” grating use WHM saddle clips.

1”, 1-1/2” or 2”

1-1/2” or 2” CC 1-1/2” or 2” CC


CorGrate FW (Flush Top Wide Flange) gratings provide superior and economical walking surface with exceptional strength and good corrosion protection. With sections offering either 60% or 40% open area, the FW products are an excellent choice for working platforms. Flush top tie bar systems are usually preferred for walking surfaces over non-flush bar products.

Standard lengths are 20’ and 24’.Standard color for isophthalic polyester (PF) is yellow.Standard color for vinyl ester (VF) is dark gray.Standard gratings are furnished with gritted, skid resistant top surface.Standard cross bar spacings are 6” on center.Custom lengths, colors, bar spacings, and finishes are available, contact CorGrate for assistance.

For FW60 grating use WHM saddle clips.For FW40 grating use W4S saddle clips.

Pultruded FW Series

UNIFORM LOADS - psf (Deflection in Inches) CONCENTRATED LOADS - lbs/Ft of Width (Deflection in Inches)Prod-uct Load/Span 24” 30” 36” 42” 48” 54” 60” 66” 72” Load/Span 24” 30” 36” 42” 48” 54” 60” 66” 72”

1” FW60

50 .01 .03 .05 .10 .17 .27 .40 — — 200 .04 .07 .12 .18 .27 .38 — — —100 .02 .06 .11 .20 .33 — — — — 300 .06 .11 .17 .27 .40 — — — —250 .05 .11 .22 — — — — — — 500 .09 .18 .29 — — — — — —

Max Recommended Load 2320 1480 1030 750 570 450 360 — — Max Recommended Load 2320 1850 1540 1310 1140 1010 900 — —Ultimate Capacity 5800 3710 2570 1880 1430 1130 900 — — Ultimate Capacity 5800 4620 3850 3270 2850 2520 2250 — —

1” FW40

50 .01 .02 .04 .07 .11 .18 .27 .40 — 200 .02 .05 .08 .12 .18 .25 .34 — —100 .02 .04 .07 .13 .22 .36 — — — 300 .04 .07 .12 .18 .27 .38 — — —200 .03 .07 .15 .27 — — — — — 500 .06 .12 .19 .30 — — — — —

Max Recommended Load 3480 2227 1540 1130 860 680 540 440 — Max Recommended Load 3480 2780 2320 1970 1720 1520 1350 — —Ultimate Capacity 8700 5550 3850 2820 2150 1700 1350 1100 — Ultimate Capacity 8700 6950 5800 4920 4300 3800 3370 — —

1-1/4” FW60

50 .01 .02 .04 .07 .11 .17 ..26 .38 — 200 .02 .05 .08 .12 .18 .25 .34 — —100 .02 .04 .07 .13 .22 .35 — — — 300 .04 .07 .12 .18 .27 .37 — — —200 .03 .07 .15 .27 — — — — — 500 .06 .12 .19 .30 — — — — —

Max Recommended Load 2920 1850 1270 920 690 530 420 340 — Max Recommended Load 2920 2310 1910 1610 1380 1200 1060 — —Ultimate Capacity 7300 4620 3170 2300 1720 1320 1050 850 — Ultimate Capacity 7300 5770 4770 4025 3450 3000 2650 — —

1-1/4” FW40

50 .01 .01 .02 .04 .07 .12 .18 .26 .36 200 .01 .03 .04 .07 .10 .14 .19 .26 .33100 .01 .02 .05 .09 .15 .23 .35 — — 300 .02 .04 .07 .10 .15 .21 .29 — —200 .02 .05 .10 .18 .29 — — — — 500 .04 .08 .13 .20 .29 .41 — — —

Max Recommended Load 4380 2770 1910 1380 1040 800 630 510 410 Max Recommended Load 4380 3470 2860 2410 2080 1810 1590 1410 1250Ultimate Capacity 10950 6920 3820 3450 2600 2000 1570 1270 1020 Ultimate Capacity 10950 8670 7150 6020 5200 4520 3975 3525 3120

1-1/2” FW60

50 .01 .01 .02 .04 .06 .10 .15 .22 .31 200 .01 .03 .04 .07 .10 .14 .19 .26 .33100 .01 .02 .04 .08 .13 .20 .30 .44 — 300 .02 .04 .07 .10 .15 .21 .29 — —200 .02 .04 .08 .15 .25 .40 — — — 500 .04 .07 .11 .17 .25 .36 .49 — —


1-1/2” FW40

50 .01 .01 .01 .02 .04 .07 .10 .15 .21 200 .01 .02 .03 .05 .07 .10 .13 .17 .22100 .01 .01 .03 .05 .09 .14 .21 .31 .44 300 .01 .03 .04 .07 .10 .14 .19 .26 .33200 .01 .03 .06 .10 .17 .27 .40 — — 500 .02 .04 .07 .11 .17 .24 .32 — —


NOTES1. Deflection for uniform loads is limited to L/120 with L representing clear span length in inches. For typical pedestrian traffic, uniform load of 50 PSF is recommended with deflection not to exceed .375”.2. Deflections for concentrated loads are shown for the same span conditions as for uniform loads.3. Deflection limits can be higher for fiberglass gratings as they are more resilient than metal materials.4. Maximum recommended loads have been determined by applying a 2.5 Factor of Safety (FOS) to the Ultimate Capacity of the grating.

Pultruded FW SeriesSection 1” FW60 1” FW40 1-1/4” FW60 1-1/4” FW40 1-1/2” FW60 1-1/2” FW40Depth 1” 1” 1-1/4” 1-1/4” 1-1/2” 1-1/2”

Open Space 0.9” 0.4” 0.9” 0.4” 0.9” 0.4”

Standard Widths 3’, 4’ 3’, 4’ 3’, 4’ 3’, 4’ 3’, 4’ 3’, 4’

Standard Lengths 20’, 24’ 20’, 24’ 20’, 24’ 20’, 24’ 20’, 24’ 20’, 24Weight (Lbs/SF) 2.2 lbs 3.3 lbs 2.6 lbs 4.0 lbs 2.8 lbs 4.2 lbs

Open Area 60% 40% 60% 40% 60% 40%

I in4/ft of width 0.348 0.522 0.578 0.868 1.000 1.500

S in3/ft of width 0.696 1.044 0.928 1.388 1.333 2.000I = Moment of Inertia • S = Section Modulus

Open Area 60% or 40%

1”, 1

-1/4

” or

1-1

/2”

1” or 1-1/2” CC

.60” TYP


Pultruded WT Series (1”, 1-1/2”)

CorGrate WT (Wide Flange T) sections provide maximum surface area underfoot, thus the most comfortable walking surface and an excellent surface for two-wheel moving equipment. These designs are excellent for areas with high traffic and light hand trucks or wheeled carts. All of the WT sections feature a drop notch tie bar system that resists bearing bar racking and rotation. WT00 provides a cost effective solid deck surface.

Standard lengths are 20’ and 24’.Standard color for 1” an 1-1/2” WT gratings is light gray for both isophthalic polyester (PF) and vinyl ester (VF) resin systems.Standard gratings are furnished with gritted, skid resistant top surface.Standard cross bar spacing is 12” on center.Custom lengths, colors, bar spacings, and finishes are available, contact CorGrate for assistance.

For WT35 and WT18 grating use WT1 fiberglass fastener plates. For WT00 grating use stainless steel fastener plates.

Pultruded 1” and 1-1/2” WT SeriesSection 1” WT35 1” WT18 1” WT00 1-1/2” WT35 1-1/2” WT18 1-1/2” WT00Depth 1” 1” 1” 1-1/2” 1-1/2” 1-1/2”

Open Space 7/8” 3/8” 0” 7/8” 3/8” 0”

Standard Widths 35”, 47-1/2” 3’, 4’ 35”, 47-1/8” 35”, 47-1/2” 3’, 4’ 35-3/4”, 47-1/8”

Weight (Lbs/SF) 2.8 lbs 3.3 lbs 4.0 lbs 2.7 lbs 3.3 lbs 4.0 lbsOpen Area 35% 18% 0% 35% 18% 0%

I in4/ft of width 0.292 0.365 0.449 0.769 0.962 1.183

ST in3/ft of width 0.820 1.025 1.261 1.380 1.747 2.149

SB in3/ft of width .454 .567 .697 .810 1.013 1.246

I = Moment of Inertia • S = Section Modulus

UNIFORM LOADS - psf (Deflection in Inches) CONCENTRATED LOADS - lbs/Ft of Width (Deflection in Inches)Product Load/Span 24” 30” 36” 42” 48” 54” 60” 66” 72” Load/Span 24” 30” 36” 42” 48” 54” 60” 66” 72”

1” WT35

50 .02 .04 .09 .15 .26 .37 — — — 200 .06 .11 .18 .28 .41 — — — —100 .04 .08 .17 .30 — — — — — 300 .09 .16 .27. .42 — — — — —250 .07 .17 .34 — — — — — — 500 .15 .27 .46 — — — — — —

Max Recommended Load 1700 1080 740 530 400 — — — — Max Recommended Load 1700 1350 1110 930 800 — — — —Ultimate Capacity 4250 2700 1850 1320 1000 — — — — Ultimate Capacity 4250 3370 2770 2320 2000 — — — —

1” WT18

50 .01 .03 .07 .12 .20 — — — — 200 .05 .09 .15 .22 .33 .42 — — —100 .03 .07 .14 .24 — — — — — 300 .07 .13 .22 .34 — — — — —200 .06 .14 .27 — — — — — — 500 .12 .22 .37 — — — — — —


1” WT00

50 .01 .03 .06 .10 .17 .24 .33 — — 200 .04 .07 .12 .18 .27 .34 .43 — —100 .02 .06 .11 .20 .33 — — — — 300 .06 .11 .18 .27 .40 — — — —200 .05 .11 .22 — — — — — — 500 .10 .18 .30 — — — — — —


.341-1/2” WT35

50 .01 .02 .04 .07 .10 .15 .20 .26 .32 200 .03 .06 .09 .12 .17 .21 .25 .30 .34100 .02 .04 .08 .13 .21 .29 .40 — — 300 .05 .08 .13 .19 .25 .31 .38 .45 —200 .04 .09 .16 .27 — — — — — 500 .08 .14 .22 .31 — — — — —


1-1/2” WT18

50 .01 .02 .03 .05 .08 .12 .16 .21 .26 200 .02 .04 .07 .10 .13 .17 .20 .24 .28100 .02 .03 .06 .11 .17 .23 .32 .41 — 300 .04 .07 .10 .15 .20 .25 .30 .36 .41200 .03 .07 .13 .22 .33 — — — — 500 .06 .11 .17 .25 .33 .42 — — —


1-1/2” WT00

50 .01 .02 .03 .04 .07 .10 .13 .17 .21 200 .02 .04 .06 .08 .11 .13 .16 .19 .22100 .01 .03 .05 .09 .13 .19 .26 .33 .42 300 .03 .05 .08 .12 .16 .20 .25 .29 .34200 .02 .06 .11 .18 .27 .38 — — — 500 .05 .09 .14 .20 .27 .34 .41 .49 —




2” or 1-1/2” CC

1” or 1-1/2”

1-5/8” TYP.


Pultruded WT Series (2”)CorGrate 2” WT (Wide Flange T) also offers a wide flange walking surface that improves walking and standing comfort. 2” WT sections have the highest strength to weight ratio of all CorGrate gratings and offer the greatest economy for applications with long spans.

Standard lengths are 20’ and 24’.Standard color for 2” WT gratings is yellow for isophthalic polyester (PF) and dark gray for vinyl ester (VF) resin systems.Standard gratings are furnished with gritted, skid resistant top surface.Standard cross bar spacings are 6” on center.Custom lengths, colors, bar spacings, and finishes are available, contact CorGrate for assistance.

For WT50 grating use T5S saddle clips.For WT35 grating use T3S saddle clips.

Pultruded 2” WT SeriesSection 2” WT50 2” WT33Depth 2” 2”

Open Space 1” 1/2”

Standard Widths 3’, 4’ 3’, 4’Weight (Lbs/SF) 2.8 3.7

Open Area 50% 33%

I in4/ft of width 1.753 2.337

ST in3/ft of width 1.950 2.600

SB in3/ft of width 1.590 2.120



2” WT50

50 .01 .03 .04 .07 .10 .14 .20 .28 .37 200 .03 .05 .07 .10 .13 .17 .22 .27 .34100 .03 .05 .08 .13 .20 .29 .41 — — 300 .04 .07 .10 .14 .19 .25 .32 .41 —250 .06 .10 .17 .27 .40 — — — — 500 .07 .12 .17 .24 .32 .42 — — —


2” WT33

50 .01 .02 .03 .04 .07 .10 .13 .19 .25 200 .02 .03 .04 .06 .09 .11 .14 .18 .22100 .02 .03 .06 .09 .13 .19 .27 .37 .49 300 .03 .05 .07 .10 .13 .17 .22 .27 .34200 .04 .07 .11 .18 .27 .39 — — — 500 .05 .08 .11 .16 .21 .28 .36 .46 —




2” or 1-1/2” CC

2”

1.0” TYP.


Pultruded HI Series

CorGrate HI (Heavy Duty I-Bar) sections are high strength gratings designed specifically for heavy loading with HI 47 having the highest load capacity of any fiberglass grating available today. The sections are engineered to support vehicular traffic including transport trucks up to H20 unidirectional loading. For turning wheel loads, Covered HI grating with 1/4” plate must be used and a CorGrate representative contacted for design assistance.

Standard lengths are 20’ and 24’. Standard color HI grating is yellow for vinyl ester (VF).Standard grating are furnished with gritted, skid resistant top surface.Standard cross bar spacing is 6” on center.For HI58 grating use WHM saddle clips.For HI47 grating use W4S saddle clips.

Pultruded HI SeriesSection 1” HI47 1-1/2” HI58 1-1/2” HI47 2” HI58 2” HI47 2-1/2” HI58 2-1/2” HI47Depth 1” 1-1/2” 1-1/2” 2” 2‘‘ 2-1/2” 2-1/2”Open Space 9/16” 7/8” 9/16” 7/8” 9/16” 7/8” 9/16”

Standard Widths

23-3/4”, 35.63” 3’, 4’ 23-3/4”,

35.63” 3’, 4’ 23-3/4”, 35.63” 3’, 4’ 23-3/4”,

35.63”Weight

(Lbs/SF) 5.5 6.5 8.0 8.7 10.9 10.0 12.3

Open Area 47% 58% 47% 58% 47% 58% 47%

I = Moment of Inertia • S = Section Modulus’

UNIFORM LOADS - psf (Deflection in Inches) WHEEL LOADS - lbs/Ft of Width (Deflection in Inches)Product Load/Span 36” 42” 48” 54” 60” 66” 72” 78” 84” Load/Span 12” 18” 24” 30” 36” 42” 48” 54”

1” HI47

100 .05 .08 .13 .21 .32 .48 — — — 2000 .04 .10 .20 .33 — — — — —200 .10 .17 .27 .42 — — — — — 6200 .13 — — — — — — — —300 .15 .25 .40 — — — — — — 8730 .19 — — — — — — — —

Max Recommended Load 3220 2360 1810 1430 1150 950 — — — 20800 .12 — — — — — — — —Ultimate Capacity 8050 5900 4525 3570 2870 2370 — — —

1-1/2” HI58

100 .03 .05 .08 .12 .18 .27 .38 — — 2000 .04 .08 .10 .13 .21 .32 — — —200 .06 .10 .16 .25 .37 — — — — 6200 .13 .24 — — — — — — —300 .09 .15 .24 .37 — — — — — 8730 .18 — — — — — — — —

Max Recommended Load 5590 4110 3140 2480 2010 1660 1390 1190 — 20800 .11 .29 — — — — — — —Ultimate Capacity 13970 10270 7850 6200 5020 4150 3470 2970 — — — — —

1-1/2” HI47

100 .02 .04 .06 .10 .15 .22 .30 .42 — 2000 .03 .06 .11 .17 .25 .36 — —200 .05 .08 .13 .20 .29 .43 — — — 6200 .10 .19 .33 — — — — — —300 .07 .12 .19 .29 .44 — — — — 8730 .14 .27 — — — — — — —

Max Recommended Load 7070 5190 3970 3140 2540 2100 1760 1500 — 20800 .09 .23 — — — — — — —Ultimate Capacity 17670 12970 9920 7850 6350 5250 4400 3750 —

2” HI58

100 .02 .03 .04 .06 .08 .11 .15 .21 .28 6200 — .21 .28 .38 — — — — —200 .03 .05 .08 .11 .16 .22 .31 .42 — 8730 — .29 .39 — — — — — —300 .05 .08 .12 .17 .24 .34 .46 — — 10400 — — — — — — — — —

Max Recommended Load 9640 7080 5420 4280 3470 2860 2410 2050 1770 20800 — .25 — — — — — — —Ultimate Capacity 24100 17700 13550 10700 8670 7150 6020 5120 4420

2” HI47

100 .01 .02 .03 .05 .06 .09 .12 .17 .22 6200 — .17 .22 .31 .43 — — — —200 .03 .04 .06 .09 .13 .18 .25 .33 .44 8730 — .24 .31 .44 — — — — —300 .04 .06 .09 .14 .19 .26 .37 .50 — 10400 — .26 .36 — — — — — —

Max Recommended Load 12180 8940 6850 5410 4380 3620 3040 2590 2230 20800 — .21 .34 — — — — — —Ultimate Capacity 30450 22350 17120 13520 10950 9050 7600 6470 5570

2-1/2” HI58

100 .01 .02 .03 .04 .06 .08 .12 .16 .22 6200 — .06 .12 .20 .30 .44 — — —200 .02 .03 .05 .08 .11 .16 .23 .32 .43 8730 — .09 .17 .28 .42 — — — —300 .03 .05 .08 .11 .17 .25 .35 .48 — 10400 — .10 .19 .33 .49 — — — —

Max Recommended Load 12500 10710 8440 6670 5400 4460 3750 3190 2750 20800 — .07 .18 .34 — — — — —Ultimate Capacity 31250 26770 21100 16670 13500 11150 9370 7970 6870

2-1/2” HI47

100 .01 .01 .02 .03 .05 .07 .09 .13 .17 6200 — .05 .10 .16 .24 .35 .49 — —200 .02 .03 .04 .06 .09 .13 .19 .26 .34 8730 — .08 .13 .23 .34 .49 — — —300 .02 .04 .06 .09 .14 .20 .28 .38 — 10400 — .08 .15 .26 .40 — — — —

Max Recommended Load 15780 13530 10670 8430 6830 5460 4740 4040 3480 20800 — .07 .14 .27 .43 — — — —Ultimate Capacity 39450 33820 26670 21070 17070 13650 11850 10100 8700

NOTES1. Deflection for uniform loads is limited to L/120 with L representing clear span length in inches. For typical pedestrian traffic, uniform load of 50 PSF is recommended with deflection not to exceed .375”.2. Deflections for concentrated loads are shown for the same span conditions as for uniform loads.3. Deflection limits can be higher for fiberglass gratings as they are more resilient than metal materials.4. Maximum recommended loads have been determined by applying a 2.5 Factor of Safety (FOS) to the Ultimate Capacity of the grating.5. Wheel loads represent: 2000 lbs on 7” x 10” wheel print; 6200 lbs. - 2 Ton Fork Lift; 8730 lbs - 3 Ton Fork Lift; 10400 lbs - H10 load on 10” x 10” wheel print; 20800 lbs - H20 load on 20” x 20” wheel print.


5/8” TYP

1”, 1

-1/2

” o

r 2-

1/2”

1-1/2” or 3/16 CC


Pultruded SI SeriesWith profile appearance similar to metal grating, CorGrate SI (Standard I-Bar) sections are provided for applications where a close match to a steel or aluminum profile or to an existing installation is needed. SI sections with bonded rod crossbars (without locking assembly) are suitable for use in low pedestrian traffic areas.

Standard lengths are 20’ and 24’.Standard color for SI gratings is yellow for vinyl ester (VF).Standard gratings are furnished with gritted, skid resistant top surface.Standard cross bar spacing is 6” on center.

For SI grating use SFM saddle clips.

Pultruded SI SeriesSection 1” SI73 1-1/4” SI73 1-1/2” SI73Depth 1” 1-1/4” 1-1/2”Open Space 7/8’ 7/8’ 7/8’

Standard Widths

23.75”, 35.63”

23.75”, 35.63”

23.75”, 35.63”

Weight (Lbs/SF) 2.7 lbs. 3.3 lbs. 3.8 lbs.

Open Area 73% 73% 73%I in4/ft

of width 0.248 0.477 0.813

ST in3/ft

of width 0.484 0.767 1.088

SB in3/ft

of width 0.516 0.768 1.090



1” SI73

50 .01 .03 .06 .11 .19 .30 .46 — — 200 .04 .08 .13 .20 .30 .43 — — —100 .03 .06 .12 .22 .38 — — — — 300 .06 .11 .19 .31 .46 — — — —250 .05 .12 .24 — — — — — — 500 .10 .19 .32 — — — — — —

Max Recommended Load 3220 2060 1430 1050 800 630 510 — — Max Recommended Load 3220 2580 2150 1840 1610 1430 1290 — —Ultimate Capacity 8050 5150 3570 2620 2000 1570 1270 — — Ultimate Capacity 8050 6450 5450 4600 4020 3570 3220 — —

1-1/4” SI73

50 .01 .02 .03 .06 .11 .20 .37 — — 200 .02 .04 .07 .11 .18 .28 .47 — —100 .02 .03 .07 .12 .22 .40 — — — 300 .04 .06 .10 .17 .27 .42 — — —200 .03 .07 .13 .24 — — — — — 500 .06 .10 .17 .28 — — — — —

Max Recommended Load 5110 3270 2270 1670 1270 1010 810 670 — Max Recommended Load 5110 4090 3400 2920 2550 2270 2040 1850 —Ultimate Capacity 12770 8170 5670 4170 3170 2520 2020 1670 — Ultimate Capacity 12770 10220 8500 7300 6370 5670 5100 4620 —

1-1/2” SI73

50 .01 .01 .02 .04 .07 .11 .16 .24 .33 200 .02 .03 .05 .07 .11 .15 .21 .27 .35100 .01 .02 .05 .08 .14 .22 .32 .47 — 300 .02 .04 .07 .11 .16 .23 .31 .41 —200 .02 .05 .09 .16 .27 .43 — — — 500 .04 .07 .12 .19 .27 .38 — — —



Open Area 73%

5 / 1 6 ” TYP.

13/16” CC

1”, 1-1/4” or 1-1/2”


CorTreads - Fiberglass Stair Treads

CorTread™ fi berglass stair treads deliver safety and long lasting durability. Manufactured with premium polyester or vinyl ester resin, CorTreads provide outstanding protection against corrosion and reliability structural performance. Exceeding OSHA requirements important safety benefi ts are addressed with slip resistant surfaces, non-conductivity, low fl ame spread and contrasting nosing to differentiate step off location.

CorTreads are supplied in two ways: (1) in full 2’x12’ panels so local maintenance personnel can cut individual treads or, (2) treads fabricated by CorGrate in custom lengths up to 48” and in depths up to 12”, to accommodate specifi c customer needs.

The most vulnerable point of a stair tread is the nosing. For greater durability, CorTread nosings are high strength, heavy bars with slip resistant, gritted surface. With high structural properties, the heavy bar nosing provides greater stiffness and builds in durability.

CorGrate Fiberglass Systems www.corgrate.com

The most vulnerable point of a stair tread is the nosing. For greater durability, CorTread nosings are high strength, heavy bars with slip resistant, gritted surface. With high structural properties, the heavy bar nosing provides greater stiffness and builds in durability.


Stair TreadsMolded Stair Treads• Available in the 3 standard resins: VF, PF and GF. Please specify.• Yellow gritted pultruded nosing standard; applied grit surface on tread grating optional at additional cost.• Four stainless steel J Bolts per tread standard.• Two 2” x 2” x 1/4” support angles per tread, with bolts are optional at additional cost.• Pultruded nosing provides superior stiffness on the front edge of the stair tread.

TypeDepth

of TreadProduct

DesignationWidth

of Tread

Approx. Defl ection = 300 lb. Concentrated Midspan front 5”± Tread

Tread Length

2”-0” 2”-6” 3”-0” 3”-6” 4”-0”Square Mesh 1-1/2” 1-1/2” SM CorTread Up to 12” .086 .151 .237 — —Square Mesh 2” 2” SM CorTread Up to 12” .048 .092 .158 .208 .306

Type Depthof Tread

Product Designation

Approximate Defl ection - 300 lb. Concentrated Load Midspan Front 5” ± Tread

Tread Length

2’-0” 2’-6 3’-0” 3’-6” 4’-0” 4’-6”

SI or FI CorTread1” 1” SI73 or 1” FI70 .092 .170 .281 — — —

1-1/2” 1-1/2” SI73 or 1-1/2”FI70 .033 .061 .101 .156 .227 .319

FW CorTread

1” 1” FW60 .062 .114 .187 .284 — —

1-1/2” 1-1/2” FW60 .036 .058 .112 .172 .249 .345

1-1/2” 1-1/2” FW40 .031 .057 .095 .145 .210 .291

Pultruded Stair Treads• Treads are made to order. Select the desired type of grating, resin, depth, width, and lengths of treads. Refer to table below for the approximate defl ection. Other styles can be made into treads; call for details.• Defl ection for treads are based upon a 300 lb. concentrated load at mid span on the front 5” of the tread.• All treads are supplied with 4 stainless steel clips per tread; nuts, bolts and washers optional at additional costs.• Yellow gritted nosing is standard.• 2” x 2” x 1/4” FRP supported angle with bolt, nut and washer optional at additional cost.


Structural ShapesCorGrate manufactures and stocks many sizes of structural components, including angles, T’s, channels, I-beams flat sheets, and plates. These structural shapes meet ASTM requirements. CorGrate will fabricate them to your specifications to create platforms, ladders, handrails, etc., or will provide them in stock lengths for your own fabrications.

Resin SystemsStandard and custom shapes can be produced in a wide variety of resin systems best suited for your application. We have developed three standard resin systems that generally cover most applications and remain readily available.

Stocked item structural shapes are standard in the following systems:PN Isophthalic Polyester, Non-Fire Retardant Resin. Olive GreenPF Isophthalic Polyester Fire Retardant Resin. Gray.VF Vinyl Ester fire Retardant Resin. Beige

CorGrate can also manufacture your custom profiles, as well as additional sizes and shapes of the profiles shown on page 15.

Properties of Structural ShapesMat & Roving Parts 40 to 45% Glass

Minimum average properties as achieved by the appropriate ASTM method. Properties obtained are minimum values.

Property (coupon values) Unit Longitudinal TransverseTensile Strength psi 30,000 7,000Tensile Modulus psi x 106 2.5 0.8Flexural Strength psi 30,000 10,000Flexural Modulus psi x 106 1.8 0.8Izod Impact ft.-lbs/in. 25 4Compressive Strength psi 30,000 15,000Compressive Modulus psi x 106 2.5 1.0Barcol Hardness — 50Short Beam Shear Strength psi 4,500Dielectric VPM 200Density lbs./in2 0.062 - 0.070Coefficient of Thermal Expansion in./in/°F 4.4 x 106

Water Absorption Max. % 0.45Modulus of Elasticity (full section) psi x 106 2.8


PROFILE SIZE (in inches) PN PF VF WT./FT PROFILE SIZE (in inches) PN PF VF WT./FT

ANGLE SQUARE TUBE1 x 1/8 � � � .21 1 x 1/8 � � � .211-1/4 x 1/8 .23 1-1/4 x 1/8 .411-1/2 x 3/16 � .37 1-1/4 x 1/4 � .681-1/2 x 1/4 � � � .51 1-1/2 x 1/8 � � � .542 x 1/4 � � � .68 1-1/2 x 1/4 � .983 x 1/4 � � � 1.04 1-3/4 x 1/8 � � 1.103 x 3/8 � � � 1.65 2 x 1/8 � � .693 x 1/2 2.15 2 x 1/4 � � � 1.404 x 1/4 � � � 1.41 2 x 3/8 1.904 x 3/8 � � � 2.23 2-1/4 x 1/8 � � .884 x 1/2 � � � 2.93 2-1/2 x 1/4 1.566 x 3/8 3.44 3 x 1/4 � � � 2.156 x 1/2 � � � 4.50 4 x 1/4 � � 2.93

CHANNEL 4 x 3/8 4.243 x 1 x 1/4 � � � .87 ROUND TUBE3 x 1-1/2 x 1/4 1.07 5/8 x 1/8 .184 x 1-1/8 x 1/4 � � � 1.11 3/4 x 1/8 .206 x 1-5/8 x 1/4 � � � 1.64 1 x .100 .226 x 1-11/16 x 3/8 � � � 2.52 1 x 1/8 � � .25.8 x 2-3/16 x 3/8 � � � 3.40 1-1/8 x 1/8 .3110 x 2-3/4 x 1/2 � � � 5.65 1-1/4 x 3/32 .27

I-BEAM 1-1/4 x 1/8 .323 x 1-1/2 x 1/4 1.11 1-1/4 x 1/4 .604 x 2 x 1/4 � � � 1.46 1-1/2 x 1/8 � � .456 x 3 x 1/4 � 2.24 1-1/2 x 1/4 � � .796 x 3 x 3/8 3.29 1-3/4 x 1/8 .478 x 4 x 3/8 � � � 4.46 1-3/4 x 1/4 .948 x 4 x 1/2 6.03 2 x 1/4 � � � 1.1210 x 5 x 3/8 5.78 3 x 1/4 1.6910 x 5 x 1/2 7.58 3 x 1/2 � 3.0612 x 6 x 1/2 8.97 SHEET18 x 3/8 x 4-1/2 x 1/2 8.48 1/8 x 48 x 96 � � � 1.1424 x 3/8 x 7-1/2 x 3/4 16.47 3/16 x 48 x 96 � � � 1.71

WIDE FLANGE TUBE 1/4 x 48 x 96 � � � 2.343 x 3 x 1/4 � � � 1.69 3/8 x 48 x 96 � � � 3.544 x 4 x 1/4 � � � 2.10 1/2 x 48 x 96 � � � 4.686 x 6 x 1/4 � � � 3.41 5/8 x 48 x 96 5.796 x 6 x 3/8 � � � 5.05 3/4 x 48 x 96 6.948 x 8 x 3/8 � � � 4.46 1 x 48 x 96 7.278 x 8 x 1/2 9.2310 x 10 x 1/2 11.6412 x 12 x 1/2 13.88

Structural ShapesStructural Shape Stocking Chart

PN = Isophthalic Polyester Non-Fire Retardant Resin (Olive Green)PF = Isophthalic Polyester Fire Retardant Resin (Gray, Handrail Tubes are Yellow)VF = Vinyl Ester Fire Retardant Resin (Beige; Handrail Tubes are Yellow)� = Standard Stocked Item� = Standard Non-Stock ItemBlank = Special Run Item, minimums apply


CorLight Fiberglass Ladders and CagesLadder Features and Benefits:

Corrosion Resistance - Ladders and cages are fabricated with glass reinforced yellow vinyl (VF) structural shapes. Standoff clips are gray PF or beige VF. These materials handle a broad range of corrosive environments.

Non Conductive - Our Ladders and cages are safe from power lines or electric shorts that can injure climbers on metal ladders.

Colorfast - Ladders and cages are colored throughout the laminate. Painting isn’t required and scratches don’t mar the finish.

Pre-Fabricated - Ladders are shipped pre-fabricated up to 20 ft. long. Field fabrication is eliminated and construction costs are reduced. Cages are furnished “knocked down” for ease of shipping, handling and installation.

High Strength - Ladders and cages meet all structural and dimensional requirements of OSHA 1910.27. Our Ladders and Cages are designed with a 300 percent safety factor.

Safety - Ladders and cages don’t rust. Deterioration under a coating of paint, as is common with metal ladders, cannot occur. Rungs have a black grit safety surface.

Installation - Ladders and cages can be bolted to any structure where metal ladders are used. Stainless steel or steel support clips are available where clips must be field welded to a primary structure.

16


CorGrip® Fiberglass HandrailHandrail Features and Benefits:

Substantially reduces the life cycle cost of your handrails. Now you can eliminate sandblasting, painting and corrosion repair.

Resistant to a wide variety of corrosive chemicals. It meets Class 1 flame spread rate per ASTM-E-84 and UL approved classification .94VO. Scratches don’t remove color from the surface because the handrail is pigmented safety yellow throughout. It remains attractive much longer than painted handrails.

Meets OSHA Requirements. It’s resilience resists permanent impact deformations common to metal handrails.

Several style options. Available in 3-rail, ADA and picket rail in addition to the standard 2-rail system.

Electrically Non-Conductive. The danger of “hot” handrails is reduced, and electrolytic corrosion is eliminated.

Shipped in Pre-Fabricated Sections. These modules are ready to be bolted in place. Field fabrication is eliminated, and installation costs are substantially reduced.

Can be Field Assembled from Stock Components. CorGrip® is engineered to be component system, which reduces project time through fast field assembly.

Lightweight. Load on existing structures is reduced. Heavy installation equipment is not required.

A Variety of Mounting Systems. Special handrail designs and accessories are available on request. Our handrail can be designed for tanks and round platforms to suit your exact needs.

Available in Two Resin Systems: yellow polyester fire retardant (PF) and yellow vinyl ester fire retardant (VF)

17

CorPlate™/Covered Grating

CorPlate is a premium quality FRP flat sheet provided in 1/8”, 1/4”, 3/8”, 1/2” thickness. The top surface can be smooth or have a gritted slip-resistant surface. For covered grating applications, 1/8” or 1/4” CorPlate is laminated to CorGrate molded and pultruded gratings to form a solid and corrosion resistant working surface. These materials are used for applications where free passage of light, fluids, odors or air is not desired nor drainage a requirement as in pit covers where reduction of corrosive vapors is needed. HI heavy duty covered gratings are recommended for areas exposed to turning wheel traffic.

Concrete Embedment FRP Angle OptionsTraditional “Y” Embedment AngleFRP traditional “Y” embedment angles from CorGrate provide a true flat and straight seat for grating to prevent rocking and rattling. The vinyl ester material is gray in color, highly corrosion resistant and compatible with concrete. The angles are furnished in 20 foot lengths for easy field cutting and installation.

“Y” Angle Size Weight Per Foot (lbs)2” x 1-1/2” x 1/4” 1.20

1-1/2” x 1-1/2” x 1/4” 1.101” x 1-1/2” x 1/4” 1.00

Fiberglass Embedment Angle

18

EZ Angle® Embedment AngleEZ Angle embedment angle is precision-designed for solid seating of 1”, 1-1/2”, and 2” deep gratings. Less work is required to vibrate the concrete around the ribs, rebar interference is not a problem and

they do no have problems with voids. EZ Angle embedment angle is stocked in 20’ lengths for immediate shipment.

EZ Angle Size Weight Per Foot (lbs)2” x 1-1/2” x 1/4” 1.001-1/2” x 2” x 1/4” 1.001” x 1-1/2” x 1/4” 0.90

FRP Fasteners and Fabrication Details

Panel to panel connector for

molded grating

Fabrication The only tools needed for fi eld fabrication and installation are: a circular saw, a sabre saw, a 3/16” allen wrench, a 7/16” wrench and the sealing kit.

Standard Nomenclature

Typical Fastener Location

Pultruded Grating

Grating Fasteners

Standard Installation Clearances

SFM WHM

T5S W4S

T3S

WT1

Molded Grating

Dotted line is a specifi ed cutout.

Actual cutout is made to next

bearing bar on all sides.

Dotted line is a specifi ed cutout.

Actual cutout is made to next

bearing bar.

Cutouts for circular obstructions are recommended to be at least 2” larger in diameter than the obstruction. It is strongly recommended that cutouts for all openings 12” or less in dimension be made in the fi eld.

As shown in the drawings below, all rectangular cutouts are made to the next bearing bar past the obstruction.

Always seal any cut surfaces or edges of all fi berglass products.

(4 corners minimum per piece)

Bearing Bars

Bearing Bars

Bearing Bars

Bearing Bars

Bearing Bars

Bearing Bars

Bearing Bars

Bearing Bars

Panel Width

Grating DepthSpan

Span

Panel Length Panel Length

Pan

el

Wid

thP

anel

W

idth

19

All grating must be fastened in place.

MAT’L: 304SS/316SSGRT’G TYPES: 1-1/2” SM

MAT’L: 316SSGRT’G TYPES: FW40, HI47,WI50

MAT’L: 316SSGRT’G TYPES: 2” WT50

MAT’L: 316SSGRT’G TYPES: SI, 1” & 1-1/2”SM

M2E

MAT’L: 316SSGRT’G TYPES: FW60, HI58, 2”SM

MAT’L: 316SSGRT’G TYPES: 2” WT33

MAT’L: FRPGRT’G TYPES: WT18,WT35

Span(Direction of Bearing Bars)


Specifications: Fiberglass Grating

Part 1: General

1.01 Description of Work

The scope of this specification includes all labor, materials, equipment and related items as shown on the drawings to furnish and install fiberglass grating.

1.02 Quality Assurance

1.02.01 Materials furnished by CorGrate Fiberglass Systems, 9550 W Wingfoot Rd, Ste 140 Houston, Texas 77041, (800-281-3691).

1.02.02 Materials shall be tested in accordance with ASTM E-84 Surface Burning.

1.03 Product Substitutions

1.03.01 The Materials specified in this section establish a minimum quality and performance standard to be met by any substitution.

1.03.02 Applications for substitution must include actual material samples (not coupon properties) and technical information including appropriate calculations.

1.04 Submittals

1.04.01 The contractor shall submit Installation and Fabrication Drawings for approval. Include plans, elevations, framing supports and connection details.

1.04.02 The contractor shall submit manufacturer’s specifications, load tables, and standard installation details.

Part 2: Products

2.01 Materials and Finishes

2.01.01 Fiberglass grating shall be CorGrate® as manufactured by CorGrate Industries or approved equal and conform to the following specifications:

2.01.02 Fiberglass grating shall be CorGrate Series_______________

2.02 Materials — Molded Grating

2.02.01 Grating shall be glass fiber reinforced thermoset plastic produced in a one-piece mold.

2.02.02 Resin shall be one of the following:£ Vinyl Ester (VF)£ Iso Polyester (PF)£ Polyester (GF)

2.02.03 Materials shall be fire retardant and have a flame spread rating of 25 or less when tested in accordance with ASTM E-84.

2.02.04 Glass fiber reinforcements shall not exceed 35% of the material’s weight and be equal in both longitudinal and lateral directions.

2.02.05 Grating color shall be ______

2.02.06 Open area of grating shall be ______%

2.02.07 Weight of grating units shall be _____per sq. ft.

2.02.08 Skid resistant top surface of grating shall be:£ Concave (meniscus)£ Silica grit£ Aluminum oxide grit

2.02.09 Grid pattern of grating shall be uniform and square.

2.03 Materials — Pultruded Grating

2.03.01 Grating shall be constructed of structural load and cross bar components, assembled and bonded into a one piece panel.

2.03.02 Resin shall be one of the following:£ Vinyl Ester (VF)£ Iso Polyester (PF)

2.03.03 Units shall be fire retardant and have flame spread rating of 25 or less when tested in accordance with ASTM E-84.

2.03.04 Resin systems shall include inhibitors for UV protection.

2.03.05 Glass fiber reinforcements shall be 60 to 70% of the material weight.

2.03.06 Grating color shall be _______.

2.03.07 Open area of grating shall be ________%

2.03.08 weight of grating units shall be _____per sq. ft.

2.03.09 Slip resistant top surface of grating shall be:£ Silica grit£ Aluminum oxide grit

2.03.10 Spacing of load bars shall be ____inches on center. Spacing of cross bars shall be ______ inches on center.

2.04 Structural Parameters

2.04.01 Deflection of grating shall not exceed the lesser of 3/8” or L/120 under a uniform load of ____psf.

2.04.02 Deflection of grating shall not exceed 3/8” or L/120 under a concentrated load of ____lbs.

2.04.03 Maximum allowable loading of grating shall be determined using a 2.5 Factor of Safety.

Part 3: Execution

3.01 Inspection

3.01.01 Upon receiving, inspect materials thoroughly for damage or inaccuracies. For assistance, contact CorGrate immediately.

3.02 Handling and Storage

3.02.01 For long term storage, store grating on pallets. Keep all FRP materials covered. Do not drag panels across one another. Seal any scratches, crushed or chipped edges.

3.03 Installation

3.03.01 Alignment of supports must be checked before placement of grating units. All bearing surfaces must be clean.

3.03.02 Place units on supporting members and adjust into final position with proper bearing and alignment at joints and supports and immediately fasten.

3.03.03 Use anchoring devices as supplied or approved by the grating manufacturer and in accordance with the manufacturer’s instructions.

3.03.04 Coat all cut or sanded surfaces with resin furnished by the grating manufacturer in accordance with the manufacturer’s instructions.

Contact CorGrate at 800-281-3691 for specifications in an electronic format.


This chemical resistance guide is based on extensive experience and knowledge of composites in chemical service. Since actual in-use conditions can differ from referenced conditions and can vary during the usable life of the grating, this guide is intended for general reference use only. The end user is responsible for testing and determining final product suitability. Consult CorGrate for additional information regarding specific concentrations, temperatures and exposures.

Chemical Environment

Operating Temperature, °F

Chemical Environment

Operating Temperature, °FMolded CorGrate® Pultruded CorGrate® Molded CorGrate® Pultruded CorGrate®

Vinyl Ester Resin (VF)

ISO Polyester

Resin (PF)

General Polyester

Resin (GF)


ISO Polyester

Resin (PF)


ISO Polyester

Resin (PF)

General Polyester

Resin (GF)


ISO Polyester

Resin (PF)

Acetic Acid, 50% 180 150 140 180 150 Lithium Chloride 180 150 140 180 150Acetone AMB(1) AMB(2) NR AMB(2) NR Magnesium Carbonate 160 120 160 AMBAlcohol 120 120(2) 120(2) 120(2) Magnesium Chloride 180 150 140 180 150Aluminum Chloride 180 150 140 180 150 Magnesium Hydroxide 180 NR NR 140 NRAluminum Hydroxide 120 AMB NR 120 AMB Magnesium Nitrate 180 120 160 AMBAluminum Nitrate 140 120 140 100 Magnesium Sulfate 160 150 160 120Aluminum Sulfate 160 150 160 120 Mercuric Chloride 180 150 180 150Ammonium Chloride 180 150 160 120 Methyl Ethyl Ketone NR NR NR NR NRAmmonium Hydroxide, 5% 180 NR NR 140 NR Mineral Oil 180 150 180 150Ammonium Nitrate, 50% 180 120 160 120 Nickel Chloride 180 140 180 120Ammonium Nitrate, Saturated 180 100 160 100 Nitric Acid, 5% 120 100 NR 120 100Ammonium Persulfate, 25% 120 NR NR 120 NR Phenol, 10% AMB(1) NR NR AMB(2) NRAmmonium Phosphate 180 120 NR 150 AMB Phosphoric Acid, 85% 180 140 180 140(1)

Ammonium Sulfate 180 120 160 120 Phosphoric Acid, Vapor 160 120 160 120Barium Chloride 180 150 120 180 150 Potassium Aluminum Sulfate 180 150 180 150Barium Sulfate 180 150 180 150 Potassium Bicarbonate 120 AMB 110 AMB(1)

Benzene 140(2) 120(2) AMB(2) NR Potassium Carbonate, 10% 110 AMB(2) NR 110 NRBlack Liquor (Pulp Process) 180 120(2) NR 160(2) NR Potassium Chloride 180 150 140 180 150Bleach Liquor (Pulp Process) 180 AMB(2) NR 160(2) NR Potassium Hydroxide, 10% 120 AMB(2) NR 120(1) NRBrine (Sodium Chloride) 180 150 140 180 150 Potassium Nitrate 180 150 180 150Calcium Carbonate 180 120 160 120 Potassium Sulfate 180 150 180 150Calcium Hydroxide, 25% 180 150(1) 180(1) 150(2) Propylene Glycol 180 150 180 150Calcium Hypocholrite 180 150(2) NR 180(2) NR Sodium Acetate 180 150 180 150Calcium Nitrate 180 150 180 150 Sodium Benzoate 140 120 120 AMBCalcium Sulfate 180 150 180 150 Sodium Bisulfate 180 150 180 150Carbonic Acid 150 AMB 120 AMB Sodium Borate 180 150 180 150Carbon Tetrachloride AMB AMB(2) NR AMB(2) NR Sodium Bromide 180 150 180 150Chlorine Dioxide 140 AMB NR 120 NR Sodium Carbonate, 10% 140 AMB(2) 120 NRChlorine, Wet Gas 180 NR NR NR NR Sodium Chloride 180 150 140 180 150Chlorine Water 120 120(2) NR 120(2) NR Sodium Cyanide 180 AMB 160 AMB(2)

Chromic Acid, 10% 120 AMB(2) NR AMB(2) NR Sodium Dichromate 180 120 160 AMBChromium Sulfate 140 AMB 140(2) AMB Sodium Diphosphate 180 150 160 120Citric Acid 180 150 140 180 150 Sodium Hydroxide, 10% 150 NR NR NR NRCopper Chloride 180 150 140 180 150 Sodium Hypocholorite, 5-1/4% 120 100(1) 110(1) AMB(1)

Copper Cyanide Plating 120 AMB(1) 120(1) AMB(2) Sodium Nitrate 180 150 180 150Copper Nitrate 180 150 180 150 Sodium Sulfate 180 150 180 150Crude Oil, Sour 180 150 AMB 180 150 Soy Oil 180 150 160 120Ethylene Glycol 180 150 180 150 Stearic Acid 170 150 160 120Fatty Acids 180 150 180 150 Styrene NR NR NR NR NRFerric Chloride 180 150 AMB 180 150 Sulfite Liquor 160 100 160 AMBFerric Sulfate 180 150 180 150 Sulfur Dioxide, Gas - wet 180 150(1) 180 150(1)

Formaldehyde, 35% 150 150(2) NR 150(1) 150(2) Sulfur Trioxide, Gas - wet 120 NR NR AMB NRFormic Acid, 25% 100 100(1) NR 100(1) 100(2) Sulfuric Acid, 25% 180 150(1) 180(1) 150(2)

Fuel (Aviation, Diesel, Gasoline) 100 100 100 100 Tartaric Acid 180 150 160 120Glycerine 180 150 140 180 150 Toluene 120(1) 120(2) NR 120(2) NRGreen Liquor (Pulp Process) 180 NR NR 180(2) NR Trisodium Phosphate, 50% 180 150(2) 180(2) NRHydraulic Fluid 140 NR NR 140 NR Urea, 35% 110 AMB NR 110 NRHydrobromic Acid, 45% 180 150(1) 180(2) NR Vinegar 180 150 160 150Hydrochloric Acid, 15% 180 150(1) 180(1) 150(1) Water, Fresh, Salt, Distilled 180 150 140 180 150Hydrofluoric Acid, 20% 75(1) NR NR NR NR White Liquor (Pulp Process) 180 150(2) NR 108(1) NRKerosene 180 140 160 120 Zinc Chloride (Plating) 75 75(1) NR 75(1) NRLactic Acid 180 130 160 120 Zinc Nitrate 180 150 180 150Lead Acetate 180 AMB 160 AMB Zinc Salt 180 150 140 180 150Lime 180 150 140 180 150 Zinc Sulfate 180 150 180 150Linseed Oil 180 150 180 150

Chemical Resistance Guide

(1) Splash and spill exposure only (2) Infrequent splash and spill exposure with spills immediately cleaned up

AMB = Ambient or room temperature exposureNR = Not recommended for these conditions.

CorGrate Fiberglass Systems800-281-3691www.corgrate.com

Sales Offices:5151 Beltline Rd, Ste 700 Dallas, Texas 75254

9550 W Wingfoot Rd, Ste 140 Houston, Texas 77041

©CorGrate Fiberglass Systems, 2005 889820-11/05-5.0 Printed in the USA

Corgrate Fiberglass Systems believes the information contained here to be true and accurate. Corgrate makes no warranty, expressed or implied based on this literature and assumes no responsability for consequential or incidental damages in the use of theses products and systems described, including any warranty of merchantability or fitness. Information contained here is for evaluation only.

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