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Fri: 10/31/2014    
 
 

Expanded Metal Grating Load Tables

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Metric Conversion Calculator


Fixed Span

CARBON STEEL
STYLE
(Lb. Per Sq. Ft.)
SPAN
  24" 36" 48"
3 U
     D
275
     .250
100
     .220
 
C
     D
275
     .250
165
     .250
75
     .250
3.14 U
     D
375
     .250
150
     .240
50
     .250
C
     D
375
     .250
155
     .250
75
     .250
4 U
     D
350
     .240
150
     .245
50
     .250
C
     D
440
     .250
220
     .250
100
     .250
4.27 U
     D
500
     .245
165
     .245
60
     .250
C
     D
400
     .250
225
     .240
100
     .250
5 U
     D
600
     .240
175
     .240
100
     .250
C
     D
540
     .245
310
     .250
140
     .250
6.25 U
     D
800
     .220
300
     .250
115
     .240
C
     D
800
     .220
300
     .240
150
     .240
7 U
     D
800
     .210
400
     .250
165
     .240
C
     D
800
     .220
350
     .240
175
     .250

ALUMINUM
2.0 C
     D
250
     .250
100
     .250
50
     .250

STAINLESS STEEL
3.30 C
     D
––
     ––
150
     .197
50
     .135
4.50 C
     D
300
     .217
150
     .192
100
     .212

Free Span

CARBON STEEL
STYLE
(Lb. Per Sq. Ft.)
SPAN
  24" 36" 48"
3 C
     D
100
     .177
50
     .402
50
     .515
3.14 C
     D
200
     .255
100
     .583
50
     .275
4 C
     D
200
     .237
100
     .491
50
     .615
4.27 C
     D
200
     .223
100
     .217
50
     .330
5 C
     D
350
     .240
100
     .408
50
     .372
6.25 C
     D
400
     .249
100
     .247
50
     .270
7 C
     D
400
     .245
100
     .260
75
     .250

ALUMINUM
2 C
     D
150
     .231
50
     .257
––
     ––

STAINLESS STEEL
3.30 C
     D
150
     .248
50
     .300
––
     ––
4.50 C
     D
150
     .210
50
     .244
50
     .600


Catwalk Grating Selection Chart
CONCENTRATED
LOAD
(Lb. Per Foot of Length of
Catwalk or Platform)
CLEAR SPAN
(Distance between supports measured from
the inside edge of one support to the inside edge
of the next support)
23"
30"
35"
42"
47"
54"
60"
50 lbs.
Light or occasional
pedestrian traffic
3.00
3.14
3.00
3.14
3.00
3.14

3.00
3.14

3.00
3.14
4.00
4.27
5.00
6.25
100 lbs.
Normal or Frequent
pedestrian traffic
3.00
3.14
3.00
3.14
3.00
3.14
4.00
4.27
5.00
6.25
7.00
7.00
150 lbs.
Heavy or constant
pedestrian traffic
3.00
3.14
4.00
4.27
4.00
4.27
5.00
6.25
6.25
7.00
200 lbs.
Pedestrian traffic with
Light equipment
3.00
3.14
4.00
4.27
4.27
5.00
6.25
7.00
7.00
250 lbs.
4.00
4.27
5.00
5.00
6.25
7.00
300 lbs.
4.00
4.27
5.00
6.25
6.25
7.00
350 lbs.
4.00
4.27
6.25
7.00

The concentrated load deflections for the above selection chart do not exceed the 1/4" maximum deflection as stated by the federal Specification RR-G-661B and the generally accepted recommendations for normal pedestrian comfort.



 

Contact Us
Niles International

310 N. Pleasant Avenue
Niles, OH 44446

1-800-321-2727

info@nilesexpandedmetals.com



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