Image of grey 1 1/2 X 1 X 2 inch high load capacity FRP molded grating.

High Load Capacity Molded Grating – 1 1/2" x 1" x 2" HLC

1 1/2" Thick | 48% Open
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Product Description Part Number Resin Color Length Location Pieces  

Span (inches)

CONCENTRATED LOAD in lb/ft of width

Max Load
(lb/ft)

200

500

1000

2000

3000

4000

5000

18

<0.01

0.02

0.04

0.07

0.11

0.15

0.19

28,047

24

0.02

0.04

0.09

0.17

0.26

0.34

0.44

20,430

36

0.06

0.14

0.28

13,620

42

0.09

0.22

0.44

11,619

Span (inches)

UNIFORM LOAD in lb/ft2

Max Load
(lb/ft2)

200

400

500

600

700

800

18

<0.01

0.01

0.02

0.02

0.02

0.03

36,000

24

0.02

0.04

0.05

0.06

0.08

0.09

20,390

36

0.10

0.21

0.26

0.31

0.37

0.42

8,814

42

0.19

0.39

0.48

6,550

Properties Per Foot of Width

# of Bars

Load Bar Width

Bar Centers

Weight/sq ft

A=7.2 in2 I=1.35 in4 S=1.753

12

T-.43 / B-.35

1″

6.21

Technical illustrations of concentrated load and uniform load for PROGrid Fiberglass Reinforced Plastic grating.

1. Tables were developed in accordance with the test method developed by the Fiberglass Grating Manufacturers Council (FGMC) of the American Composites Manufacturers Association (ACMA) for the Fiberglass Grating Standard.

2. The designer should not exceed MAXIMUM RECOMMENDED load at any time. MAXIMUM LOAD represents a 4:1 factor of safety on ULTIMATE CAPACITY. ULTIMATE CAPACITY represents MAX LOAD observed at initial fracture.

3. Walking loads for maintenance traffic are typically a live load of 50 PSF. Deflections for worker comfort are typically limited to 0.375″ (3/8″) or SPAN divided by 120 under full live load. For a firmer feel under full live load or a line load 250 lb/ft of width, limit deflections to 0.25″ (1/4″) or SPAN divided by 200.

4. The loads represented are for STATIC LOAD CONDITIONS at ambient temperature. Deflections for impact loads or dynamic loads will MULTIPLY the deflections shown by 2. Long term loads will result in added deflection due to creep in the material and will require higher factors of safety to ensure acceptable performance.

5. Deflections are limited to 0.5″ (1/2″) as recommended by the Fiberglass Grating Manufacturers Council of the American Composites Manufacturers Association.

Technical illustration of 1 1/2 X 1 X 2 inch high load capacity structural fiberglass molded grating.