MoldedHigh Load

Capacity (HLC)

FiberglassGrating

Corrosion Resistant

Fire Retardant

Low Maintenance

High Strength-to-Weight

Non-Conductive

Low Installation Cost

High Performance Composite Solutions

2 Phone: 800-527-4043 www.fibergrate.com

Phone: 800-527-4043 15 www.fibergrate.com

High Load Capacity Grating

Molded High Load Capacity (HLC) grating is yet another product in the arsenal of engineered fiberglass

reinforced plastic (FRP) solutions by Fibergrate. While capitalizing on most of the traditional benefits of

molded grating products - high strength, corrosion resistance, fire retardancy, nonconductivity and low maintenance - this specially manufactured molded

FRP product has been engineered to carry the forklift loads that traditional molded FRP grating products are unable to support.

With a 48% open surface area, Fibergrate’s molded HLC grating is available in a 6’ x 4’ panel with depths of 1-1/2” and 2" and comes standard in a fire-retardant vinyl ester resin system, dark gray in color, with a smooth surface. Fibergrate’s molded HLC grating merits an ASTM E-84 flame spread rating of 25 or less and a Class 1 Fire Rating.

Allowable Spans for Vehicular Loads

Notes:1. Load is carried by the grating load bars immediate under wheel + four additional load bars adjacent to wheel.2. Allowable Span is based on a 0.25" maximum deflection and a Factor of Safety of 3.0. The other criteria may be required by certain construction codes. Check code requirements to determine design criteria.3. ALLOWABLE SPAN IS STRONGLY DEPENDENT ON WHEEL WIDTH AND VEHICLE WEIGHT/LOAD CAPACITY. If your application varies from the values given on this table, contact Fibergrate Engineering for application assistance.4. Load based on the AASHTO Standard Truck Load as defined in AASHTO LRFD Bridge Design Specifications, 2nd Ed. This does not imply that the allowable span meets the deflection requirements of this specification.

High Strength Designed for strength, molded HLC grat-

ing weighs significantly more per square

inch than Fibergrate’s standard gratings.

The additional weight of the heavy-duty

grating is due to the specially engineered

design which has been rated to accept H20

loads for clear spans up to 12 inches and

common forklift loads for spans up to 30

inches.

Corrosion Resistance Year in and year out, one of the foremost

reasons customers rely on Fibergrate is the

ability to offer quality FRP solutions for

their demanding environments. Offered

in our premium vinyl ester resin system,

Fibergrate’s molded HLC grating has

superior corrosion resistance to common

metallic gratings and continues a rich

tradition of solving corrosion problems.

Nonconductivity Another safety feature of Fibergrate’s

molded HLC grating is electrical and ther-

mal nonconductivity, adding yet another

layer of protection for your most valuable

resources.

Fire Retardancy

Fibergrate’s molded HLC grating, with its

premium vinyl ester fire retardant resin system,

has an ASTM E-84 flame spread rating of 25

or less and a Class 1 Fire Rating and meets

the self-extinguishing requirements of ASTM

D-635.

Low Maintenance

As with all of Fibergrate’s FRP products, HLC

grating is virtually maintenance free, reducing

or eliminating repair and replacement costs.

HLC grating is corrosion resistant and its color

is part of the resin system; therefore there is

never any need for scraping, sanding or paint-

ing. With Fibergrate molded HLC grating, you

install it and forget about it!

High Load Capacity Features & Benefits

Phone: 800-527-4043www.fibergrate.com

3

14 Phone: 800-527-4043 www.fibergrate.com

Phone: 800-527-4043 4www.fibergrate.com

1-1/2” Molded HLC Grating

1 1/2” Deep x 1” x 2” Rectangular Mesh# of Bars/Foot of Width = 12

Load Bar Width = 0.43” Load Bar Centers = 1”Open Area = 48% Approx. Weight = 6.2 psf

Panel Size 6’ x 4’ (span)

Engineering Properties Per Ft of WidthA= 7.45 in2 I = 1.39 in4 S = 1.80 in3

Average EI = 2,400,000 lb - in2

Load

Bar

s

1.0 0.33

2.0

0.431.0

1.5

6’ x4’ Finished Panel Size

2” Molded HLC Grating

2” Deep x 1” x 2” Rectangular Mesh# of Bars/Foot of Width = 12

Load Bar Width = 0.48” Load Bar Centers = 1”Open Area = 48% Approx. Weight = 8.4 psf

Panel Size 6’ x 4’ (span)

Engineering Properties Per Ft of WidthA= 10.26 in2 I = 3.40 in4 S = 3.27 in3

Average EI = 6,000,000 lb - in2

Load

Bar

s

1.0 0.39

2.0

0.481.0

2.0

Plan ViewPlan View

ElevationElevation

Note: Load carrying bars are oriented across the narrow (4’) dimension of the panel. Panels furnished with closed bars all sides.

Microelectronics Facility

HLC Grating Details

What type of traffic will the grating experience?

Standard Truck Traffic: YES NO

If YES: H-20 (20 ton) H-15 (15 ton) H-10 (10 ton)

Axle Load __________ Axle Load __________ Axle Load __________

Forklift / Towmotor Traffic: YES NO

If YES: Make ___________ Model ____________ Wheels: 3 or 4

Maximum Load on Front Wheels: _________ lbs Footprint: ___” wide

Type of Wheels: Pneumatic Hardwheel

Standard Forklifts (Verify data with your forklift supplier) 10,000 lb Capacity Lift Truck

14,000 lb Vehicle

24,000 lb Total Vehicle 85% Drive Axle = 13,480 lbs wheel load*

6,000 lb Capacity Lift Truck

9,800 lb Vehicle

15,800 lb Total Vehicle 85% Drive Axle = 8,730 lbs wheel load*

2,000 lb Capacity Lift Truck

4,200 lb Vehicle

6,200 lb Total Vehicle 85% Drive Axle = 3,425 lbs wheel load*

*1/2 of axle load with 30% impact

Load Information

Will the grating experience turning loads? YES NO

Level of Traffic: OCCASIONAL MODERATE HEAVY/CONSTANT

Uniform Load _____PSF

Pedestrian traffic only: YES NO

Supports

Existing: YES NO If NO, Will you use FRP embedment angle? YES NO

Clear Span (edge to edge of embedment angle) _____ inches

Chemical Exposure

Chemical: ________________________________

Concentration: ______________________________

Exposure: Continuous Frequent Infrequent Splash & Spill (with immediate cleanup)

Operating Temperature: ___________°F

Molded HLC Grating Survey

Phone: 800-527-4043www.fibergrate.com

5

Phone: 800-527-4043 4 www.fibergrate.com

The strength and corrosion resistance of FRP

grating are related to the glass content, resin content,

resin type and method of construction. Fibergrate

molded products provide an outstanding balance of

corrosion resistance, slip resistance and strength.

There are three frequently used methods of

support for molded fiberglass grating:

1) two continuous edge supports with bearing

bars perpendicular to the supports;

2) continuous support around all sides; and

3) four-corner support, or point support. (For

example, pedestals are provided to support the

grating a few inches above the existing floor

when large volumes of liquids are flowing

onto the floor and where a slip-resistant

drainable floor surface is required because of

operating requirements.)

Panels are normally supported around the perimeter

to assure panel-to-panel alignment.

In using Fibergrate’s grating, the principles are

similar to metal grating usage, but you must keep

in mind that the flexural modulus of elasticity of

reinforced fiberglass bars is lower than that of steel.

As a result, the allowable deflection is often the

limiting consideration.

Engineering NotesOptimum floor installation costs are achieved

by minimizing the combined cost of the support

structure and grating. As the span is decreased, load

capacity requirements of the grating are reduced.

Estimating two or three span options will establish

the optimum system.

Mesh Selection: The following notes can

be helpful in selecting the optimum mesh

configuration.

(1) Grating with heavier bars should be selected

for floors subjected to more abusive services.

In these type applications the 3/8" wide

bearing bars and 5/8" crossbars of the 1"

(1" x 4") Heavy Duty and the 1-1/2"

(1-1/2" x 6") would be more suitable than

the 1/4" wide bars on other mesh sizes.

(2) Rectangular mesh pattern grating provides the

highest load-carrying capacity based upon

cost per square foot.

(3) Square pattern mesh configurations have

nearly equal strength in both directions. Spans

larger than four feet, multiple floor cutouts,

high load/four-sided support layouts or

pedestal supported floors are conditions

frequently well-served by square mesh

configurations. High utilization per standard

panel and bidirectional aesthetics are

beneficial features of square mesh patterns.

Simple Beam Support: All data in our tables are

based on simple beam support. Load and deflection

for other types of beams, i.e., cantilever, fixed end

support, continuous support, etc. can be estimated

by using standard beam formulas.

Load vs. Deflection: Load vs. Deflection is

approximately proportional for a given span (i.e. if a

concentrated 400 lb load deflects a 30" span 1/4", an

800 lb load would deflect the same span 1/2").

Other Spans: Consult Fibergrate's Engineering

Department.

Engineering Notes

5151 Beltline Rd, Ste 700Dallas, TX 75254

800/527-4043www.fibergrate.com

Molded Grating Pultruded Grating

Moltruded® Grat-ing

1" Rectangular Mesh

1", 1-1/2" & 2"Square Mesh Rigidex® I Rigidex® II

Corrosion Resistance HR HR R HR HRStrength/Stiffness (longest span) R R HR R HRImpact Resistance R HR A NR ROpen Area (for drainage, aeration, light penetration) HR HR A HR HRSingle-Direction Span R A HR HR HRBi-Direction Span NR HR NR NR NREase of Layout and Installation A HR A A ALightweight in Comparison to Metals HR HR HR HR RCustom Panel Sizes Available A R R NR NRHR = Highly Recommended R = Recommended A = Acceptable NR = Not RecommendedThese are general comparison. A Fibergrate representative should be consulted for an exact match of grating and application.

Molded Grating Pultruded Grating Moltruded® Grating

GRATING SELECTION GUIDE

Molded, Pultruded and Moltruded® Grating

Phone: 800-527-4043 19www.fibergrate.com

Chemical Environment %Concentration

Temp˚F

Molded PultrudedFibergrate® Chemgrate® Safe-T-Span®

Vi-Corr® Super Vi-Corr® IFR/Rigidex II FGI Corvex® XFR FS-25 CP-84 VE-25 VEFR ISOFRAcetic Acid 50 MAX C C C C C I C C C C CAcetone 100 75 S S I I T I I I S I NAlcohols 100 120 C C I I I S I I C I IAlum ALL MAX C C C C C C C C C C CAluminum Chloride ALL MAX C C C C C C C C C C CAluminum Fluoride 20 75 C C I I I I I I C I IAmmonium Hydroxide 30 75 C C N N N N N I C I NAmmonium Salts-Neutral ALL 120 C C C C S S I I S C SAmmonium Salts-Aggressive ALL 75 S C I I T I I I S T NAromatic Solvents ALL 75 T T N N N N N N T N NBarium Salts ALL MAX C C C C C C C C C C CBenzene 100 140 I S I I N I I I I I NBlack Liquor (Pulp Mill) ALL MAX C C I I N I I I C I NBleach Liquor (Pulp Mill) ALL MAX C C I I N N I I C I NCalcium Hydroxide 25 MAX C C S S I I S S C S ICalcium Hypochlorite ALL MAX C C I I N I I I C I NCalcium Salts ALL MAX C C C C C C C C C C CCarbon Tetrachloride 100 75 C C I I N S N I C S NChlorinated Hydrocarbons 100 75 T T T T T N N N T T TChlorine Dioxide SAT 140 C C N N N N N T C S NChlorine Water SAT 120 C C I I T I I I C I NChlorine, Wet SAT MAX C C N N N N N N C N NChlorobenzene 100 75 S S N N N N N N S N NChlorobenzene ALL Up to 100 C C N N N N N N C N NChloroform 100 75 N N N N N N N N N N NChromic Acid 50 140 S S S S N N I S S I NCitric Acid ALL MAX C C C C C C I C C C CCopper Cyanide Plating ALL 125 C C S S I N S S C S ICopper Salts ALL MAX C C C C C C C C C C CCrude Oil (Sweet or Sour) ALL MAX C C C C C C C C C C CDichlorobenzene 100 75 T S N N N N N N T N NEthers 75 T T N N N N N N T N NFerric Chloride 100 MAX C C C C C C I C C C CFerric Salts ALL MAX C C C C C C C C C C CFluoride Salts+HCI ALL 75 C C S S N I S S C I NFluosilicic Acid 10 75 C C S S S S S S C S IFormaldehyde 37 150 C C I I I I I I C S IFormic Acid 25 100 C C S S I I I S C S IFuel (Diesel, Jet, Gasoline) ALL 100 C C C C C C C C C C CGlycerine 100 MAX C C C C C C C C C C CGreen Liquor (Pulp Mill) ALL MAX C C N N N N N I C I NHydrobromic Acid 48 MAX S S S S I I I S S I NHydrochloric Acid 10 MAX C C S S S C S S C S SHydrochloric Acid 30 MAX C C S S I I S S C I IHydrochloric Acid (concentrated) ALL Up to 180 I C N N N N N N I N NHydrocyanic Acid ALL MAX C C I I I I I I C S IHydrofluoric Acid 20 75 S C N N N N N N S N NHydrogen Peroxide 30 75 C C N N N I N N C S NLactic Acid 100 MAX C C C C C C C C C C CLime Slurry SAT MAX C C C C C C C C C C CLithium Chloride SAT MAX N C N N N N N N N N NLithium Salts ALL MAX C C C C C C C C C T TMagnesium Salts ALL MAX C C C C C C C C C C CMaleic Acid 100 MAX C C S S I C I S C S IMercury Chloride 100 MAX C C C C C C S C C C CNickel Salts ALL MAX C C C C C C C C C C CNitric Acid 20 120 C C S S I I S S C I INitric Acid 35 100 C C N N N I N I C I NNitric Acid 40 Ambient I C N N N N N N I N NNitric, Hydrofluoric 20:2 75 I C N N N N N N I N NNitrous Acid 10 75 C C C C C C I C C C COzone for Sewage Treatment 100 C C C C C C C C C C CPerchloroethylene 100 75 S C N N N I N N S I NPhenol 10 75 C C N N N N N N C I NPhenol 88 Ambient S C N N N N N N S N NPhosphoric Acid 85 MAX C C C C S C I C C C SPhosphoric Acid, Super 115 MAX C C I I T S N I C S NPotassium Hydroxide 10 120 C C I I N N I I C S NPotassium Salts ALL MAX C C C C C C C C C C CSilver Nitrate 100 MAX C C C C C C I C C C CSodium Cyanide ALL 75 C C I I I I I I C S ISodium Hydroxide 50 MAX C C I I N N I I C I NSodium Hydroxide 10 MAX C C N N N N N N C N NSodium Hypochlorite (Stable) 10 100 C C S S I S S S C S ISodium Salts-Neutral ALL MAX C C C C C C C C C C CSodium Salts-Aggressive ALL 75 S C I I T I N I S T NSulfur Dioxide SAT MAX C C S S S S S S C S SSulfuric Acid 25 MAX C C S S I S S S C S ISulfuric Acid 50 MAX C C S S N S I S C S NSulfuric Acid 75 100 C C I I N I N I C I NToluene 100 120 S C I I N N I I S I NTrichloroethane1,1,1 ALL 75 S C I I N I N I S I NTrisodium Phosphate 50 MAX C C I I I I I I C I NWater (Fresh, Salt, Moderate D.I.) 100 MAX C C C C C C C C C C CWet Chlorine/Hydrochloric Acid 10-20 Up to 350 S C N N N N N N S N NWhite Liquor (Pulp Mill) ALL MAX C C I I N I I I C S NZinc Chloride Plating ALL 75 C C S S N S I S C S NZinc Salts 100 MAX C C C C C C C C C C C

C - Continuous exposure of the grating to the Chemical Environment listed at the temperature listed.S - Frequent exposure of the grating to splashes and spills from the Chemical Environment listed with that environment at the temperature listed.I - Infrequent exposure of the grating to splashes and spills from the Chemical Environment listed with that environment at the temperature listed and the spill immediately cleaned up or washed from thegrating.N - Not recommended for the concentrations and temperatures listed.T - TestSuper ViCorr may require benzoyl peroxide-DMA cure system to increase service life.Consult Fibergrate for corrosion recommendations at concentrations, temperatures or chemicals not listed in this guide.MAX TEMP is 400˚F for Super ViCorr; 180˚ for ViCorr and Pultruded VEFR; 150˚ for IFR, FGI, XFR and Pultruded ISOFR; 140˚ for Corvex.The information in this Corrosion Guide is correct to the best of Fibergrate’s knowledge. It is based on extensive experience with fiberglass grating in corrosive applications. Because actual use condi-tions differ and mixtures of corrosives will occur in service, the end user must test for use under actual conditions. Fibergrate’s responsibility for claims arising from breach of warranty, negligence orotherwise is limited to the purchase price of the material sold by Fibergrate. Test coupons are available upon specific request.

Chemical Resistance Guide

Fibergrate Composite Structures Inc.Phone: 800-527-4043 • Fax: 972-250-1530

www.fibergrate.com • Email: info@fibergrate.com

Fibergrate Composite Structures Inc. believes the information contained here to be true and accurate. Fibergrate makes no warranty, expressed or implied based on this literature and assumes no responsibility for consequential or incidental damages in the use of these products and systems described, including any warranty of merchantability or fitness. Information contained here is for evaluation only.

Dynaform® Structural Shapes

Fibergrate offers a wide range of pultruded structural components for industrial use,

including bars, rods, tubes, beams, channels, leg angles and plates.

Dynarail® Safety Ladder System

Easily assembled on site, Dynarail safety ladder systems meet or exceed OSHA

requirements. Though less costly than prefabricated ladder systems, these safety ladders

provide a custom fit to the supporting structure.

RIGIDEX® Moltruded® Grating

RIGIDEX moltruded gratings are the first fiberglass gratings to combine the corrosion

resistance of molded grating with the longer span capacity of pultruded grating, all at the

low cost of metal gratings.

Safe-T-Span® Pultruded Industrial and Pedestrian Gratings

Combining corrosion resistance, long-life and low-maintenance designs, Safe-T-Span

provides unidirectional strength for industrial and pedestrian pultruded grating applications.

Fibergrate® Molded Grating

Fibergrate molded gratings are designed to provide the ultimate in reliable performance,

even in the most demanding conditions. Fibergrate offers the widest selection in the market

with more than ten resins and more than twenty grating configurations available in many

panel sizes and surfaces.

Stair Solutions

Fibergrate offers a wide range of slip-resistant products to meet your stair safety needs.

These durable products which include treads, tread covers and covered stair treads are a

long-term, cost-efficient solution for your facility.

Fabrication Services

Combining engineering expertise with an understanding of fiberglass applications,

Fibergrate provides turnkey design and fabrication of fiberglass structures, including

platforms, catwalks, stairways and test racks.

Grating Pedestals

Uniquely designed adjustable single and quad head pedestals for square mesh molded

grating are manufactured to provide safe and economical support for elevated flooring.

Fibergrate Products and Services

Dynarail® Handrail

Easily assembled from durable prefabricated components or engineered to your

specifications, Dynarail handrail meets or exceeds OSHA and strict building code

requirements for safety and design.

©Fibergrate Inc. 2003 885302-08/05-10.0

Made in the USA