1" Thick CC-Grate
1" x 4" (Rectangular Mesh)

*Deflection less than 0.010" and greater than 0.500" have been omitted. The use of various resins, reinforcements and surfaces can result in variations of up to 15% in load data. Free span width for 48" span data is 2" less than width of grating. This information is provided as a guide to the use and application of CC-Grate and is not or does not represent a specific warranty of the product or its performance. The designer or user must determine the suitability of this product for a specific application.
Point Load: Reflects the deflection achieved by concentrated point load applied at the center of a grating panel of varying spans. Maximum loads for "Normal" or "Firm" support under this loading are indicated.
Uniform Load (Full Panel): Reflects the deflection achieved with loads distributed evenly across 12-foot long grating pieces of varying spans.

 

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Home > Products > Grating-Deflection Data

 Corrosion Resistance Guide

PHYSICAL DEFLECTION DATA

CONCENTRATED LOAD (12" strip load)

SPAN

MAX LOAD(lb/sf)

LOAD (lb)

Inch

Normal

Firm

100

200

500

1000

2000

12

>3000

>3000

*

0.015

0.036

0.072

0.143

18

1700

1132

0.022

0.044

0.110

0.221

0.441  

24

751

500

0.050

0.100

0.250

0.499

*

36

211

140

0.178

0.356  

*

*

*

48

132

88

0.281  

*

*

*

*

UNIFORM LOAD (entire panel load)

SPAN

MAX LOAD(lb/sf)

LOAD(lb/sf)

Inch

Normal

Firm

50

100

150

200

250

12

>3000

>3000

*

*

 *

*

0.012

18

1802

1201

0.010

0.021

0.031

0.041

0.052

24

601

401

0.031

0.063

0.094

0.125

0.156

36

112

75

0.167

0.334

0.500

*

*

48

53

36

0.351

*

*

*

*

 

POINT LOAD

(center of panel)

 

 

"Normal" is the load (in pounds) that will produce a deflection of 0.375" (accepted as providing a "Normal" feel for foot traffic).

"Firm" is the load (in pounds) that will produce a deflection of 0.250" (accepted as providing a "Firm" feel for foot traffic).

 

All deflections are presented in inches. Loads are presented in pounds

SPAN

LOAD (lb)

Inch

Normal

Firm

12

>3000

>3000

18

>3000

2288

24

2245

1496

36

849

535

48

497

320

INSTALLATION NOTES: The following  tables have been developed based on two sided support layouts. Caution is needed to be sure that the rectangular grating is installed with bearing bars running from support to support. All grating should be fastened to the supports using fasteners such as the CC-Clips described in this site. These should be used every 3’-4’ along the supports, with a minimum of four clips on small sections. The clips not only add safety for the employees using the grating, but also improve on the deflection noted.
Concentrated Load (12" Strip): Reflects the deflection achieved using a 12-inch wide strip of grating tested at the mid-point of varying spans.