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Grate-Lock®  Load Tables
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Grate-Lock Load Table  2-1/2" Channel Height   Grate-Lock Load Table  3" Channel Height  
Grate-Lock Load Table  4" Channel Height  
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1-1/2" Channel Height
 PRODUCT SELECTION / DESIGN TABLES
GAUGE WIDTH WGHT
/LF		 CATALOG
NUMBER		   SPAN
2'-0" 3'-0" 4'-0" 5'-0" 6'-0" 7'-0" 8'-0" 9'-0" 10'-0" 11'-0" 12'-0"
18 12" 2.9 MG121518 U
D
C
D		 443
.10
440
.04		 196
.14
293
.10		 110
.22
220
.17		 70
.33
176
.26		 49
.48
146
.38		 36
.65
125
.52		 27
.84
110
.68		 21
1.06
97
.86		 17
1.31
88
1.06		 14
1.59
80
1.28		 12
1.89
73
1.54
9" 2.3 MG91518 U
D
C
D		 591
.10
440
.04		 263
.14
293
.10		 147
.22
220
.17		 94
.33
176
.26		 65
.48
146
.38		 48
.65
125
.52		 37
.84
110
.68		 29
1.06
97
.86		 23
1.31
88
1.06		 19
1.59
80
1.28		 16
1.89
73
1.54
6" 1.9 MG61518 U
D
C
D		 890
.10
440
.04		 395
.14
293
.10		 222
.22
220
.17		 142
.33
176
.26		 99
.48
146
.38		 72
.65
125
.52		 55
.84
110
.68		 44
1.06
97
.86		 35
1.31
88
1.06		 29
1.59
80
1.28		 24
1.89
73
1.54
16 12" 3.5 MG121516 U
D
C
D		 549
.10
546
.04		 244
.14
364
.10		 137
.22
273
.17		 87
.33
218
.26		 61
.48
182
.38		 44
.65
156
.52		 34
.84
136
.68		 27
1.06
121
.86		 22
1.31
109
1.06		 18
1.59
99
1.28		 15
1.89
91
1.54
9" 2.9 MG91516 U
D
C
D		 733
.10
546
.04		 326
.14
364
.10		 183
.22
273
.17		 117
.33
218
.26		 81
.48
182
.38		 59
.65
156
.52		 45
.84
136
.68		 36
1.06
121
.86		 29
1.31
109
1.06		 24
1.59
99
1.28		 20
1.89
91
1.54
6" 2.3 MG61516 U
D
C
D		 1104
.10
546
.04		 490
.14
364
.10		 276
.22
273
.17		 176
.33
218
.26		 122
.48
182
.38		 90
.65
156
.52		 69
.84
136
.68		 54
1.06
121
.86		 44
1.31
109
1.06		 36
1.59
99
1.28		 30
1.89
91
1.54
14 12" 4.2 MG121514 U
D
C
D		 667
.10
663
.04		 296
.14
442
.10		 166
.22
331
.17		 106
.33
265
.26		 74
.48
221
.38		 54
.65
189
.52		 41
.84
165
.68		 32
1.06
147
.86		 26
1.31
132
1.06		 22
1.59
120
1.28		 18
1.89
110
1.54
9" 3.5 MG91514 U
D
C
D		 891
.10
663
.04		 396
.14
442
.10		 222
.22
331
.17		 142
.33
265
.26		 99
.48
221
.38		 72
.65
189
.52		 55
.84
165
.68		 44
1.06
147
.86		 35
1.31
132
1.06		 29
1.59
120
1.28		 24
1.89
110
1.54
6" 2.7 MG61514 U
D
C
D		 1341
.10
663
.04		 596
.14
442
.10		 335
.22
331
.17		 214
.33
265
.26		 149
.48
221
.38		 109
.65
189
.52		 83
.84
165
.68		 66
1.06
147
.86		 53
1.31
132
1.06		 44
1.59
120
1.28		 37
1.89
110
1.54
NOTES:  
1.  THESE TABLES ARE PREPARED BASED ON TESTS CONDUCTED IN ACCORDANCE WITH THE 1980 EDITION, SECTION 6.2, OF THE AMERICAN IRON AND STEEL INSTITUTE SPECIFICATION FOR THE DESIGN OF COLD-ROLLED STEEL STRUCTURAL MEMBERS WITH THE RESULTS CHECKED AND ADJUSTED WHERE REQUIRED BY CALCULATIONS IN ACCORDANCE WITH SECTION 2 OF THE SAME SPECIFICATION.

2.  SYMBOLS ARE AS FOLLOWS:   U = ALLOWABLE SIMPLE SPAN UNIFORM LOAD (LBS./FT),  C = ALLOWABLE SIMPLE SPAN CONCENTRATED LINE LOAD (LB.) AT MIDSPAN,  D = VERTICAL DEFLECTION (IN.) AT MIDSPAN.

3.  SPANS TO THE LEFT OF THE HEAVY LINE PRODUCE DEFLECTION OF 1/4" OR LESS UNDER A UNIFORM LOAD OF 100 LBS. PER SQUARE FOOT.