Fire-Resistant Assemblies SA-100 - CGC

Limiting Heights Table
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Typical table 2 Stud Stud Allow. Partition, Partition, Furring,
limiting
heights—
Interior
partitions
width spacing defl. one layer two layers one layer
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25-gauge stud (.0179 min.)
400 mm L/120 3277 f 3277 d 3124 d
L/240 2896 d 3200 d 2515 d
41 mm L/360 2515 d 2743 d 2210 d
600 mm L/120 2667 f 2667 f 2667 f
L/240 2515 d 2667 f 2210 d
L/360 2210 d 2438 d 1095 d
400 mm L/120 4191 f 4191 f 4191 d*
L/240 3810 d 4191 d 3353 d
64 mm L/360 3277 d 3581 d 2972 d
600 mm L/120 3429 f 3429 f 3429 f
L/240 3277 d 3429 f 2972 d
L/360 2896 d 3124 d 2591 d
400 mm L/120 5105 f 5105 f 5105 f*
L/240 4877 d 5105 f 4420 d*
92 mm L/360 4267 d 4496 d 3886 d*
600 mm L/120 4115 f 4115 f 4115 f*
L/240 4115 f 4115 f 3886 d*
L/360 3734 d 3962 d 3353 d
400 mm L/120 6096 f 6096 f 6096 f*
L/240 6096 f 6096 f 6096 f*
152 mm L/360 6096 f 6096 f 5715 f*
600 mm L/120 4572 v 4572 v 4572 v*
L/240 4572 v 4572 v 4572 v*
L/360 4572 v 4572 v 4572 v*
20 gauge stud (.0312 min.)
400 mm L/120 5282 f 5462 f 5029 d*
L/240 4215 d 4901 d 3962 d*
64 mm L/360 3658 d 4267 d 3505 d
600 mm L/120 4444 f 4444 f 4420 d*
L/240 3658 d 4090 f 3505 d
L/360 3200 d 3758 d 3048 d
400 mm L/120 6882 d 7215 f 6629 d*
L/240 5462 d 6148 d 5258 d*
92 mm L/360 4749 d 5386 d 4572 d*
600 mm L/120 5892 f 5892 f 5791 d*
L/240 4749 d 5386 f 4572 d*
L/360 4167 d 4724 d 4039 d*
400 mm L/120 10034 d 10339 f 9805 d*
L/240 7949 d 8687 d 7772 d*
152 mm L/360 8959 d 7596 d 7087 d*
600 mm L/120 7696 f 7696 f 8534 d*
L/240 6956 d 7596 d 6782 d*
L/360 6072 d 6654 d 5944 d*
73 CGC Fire-Resistant Assemblies
Stud Stud Allow. Partition, Partition, Furring,
width spacing defl. one layer two layers one layer
25-gauge stud (.0179 min.)
16� L/120 10�9� f 10�9� d 10�3� d
L/240 9�6� d 10�6� d 8�3� d
1-5/8� L/360 8�3� d 9�0� d 7�3� d
24� L/120 8�9� f 8�9� f 8�9� f
L/240 8�3� d 8�9� f 7�3� d
L/360 7�3� d 8�0� d 6�3� d
16� L/120 13�9� f 13�9� f 13�9� d*
L/240 12�6� d 13�6� d 11�0� d
2-1/2� L/360 10�9� d 11�9� d 9�9� d
24� L/120 11�3� f 11�3� f 11�3� f
L/240 10�9� d 11�3� f 9�9� d
L/360 9�6� d 10�3� d 8�6� d
16� L/120 16�9� f 16�9� f 16�9� f*
L/240 16�0� d 16�9� f 14�6� d*
3-5/8� L/360 14�0� d 14�9� d 12�9� d*
24� L/120 13�6� f 13�6� f 13�6� f*
L/240 13�6� f 13�6� f 12�9� d*
L/360 12�3� d 13�0� d 11�0� d
16� L/120 20�0� f 20�0� f 20�0� f*
L/240 20�0� f 20�0� f 20�0� f*
6� L/360 20�0� f 20�0� f 18�9� f*
24� L/120 15�0� v 15�0� v 15�0� v*
L/240 15�0� v 15�0� v 15�0� v*
L/360 15�0� v 15�0� v 15�0� v*
20 gauge stud (.0312 min.)
16� L/120 17�4� f 17�11� f 16�6� d*
L/240 13�10� d 16�1� d 13�0� d*
2-1/2� L/360 12�0� d 14�0� d 11�6� d
24� L/120 14�7� f 14�7� f 14�6� d*
L/240 12�0� d 13�5� f 11�6� d
L/360 10�6� d 12�4� d 10�0� d
16� L/120 22�7� d 23�8� f 21�9� d*
L/240 17�11� d 20�2� d 17�3� d*
3-5/8� L/360 15�7� d 17�8� d 15�0� d*
24� L/120 19�4� f 19�4� f 19�0� d*
L/240 15�7� d 17�8� f 15�0 �d*
L/360 13�8� d 15�6� d 13�3 �d*
16� L/120 32�11� d 33�11� f 32�3� d*
L/240 26�1� d 28�6� d 25�6� d*
6� L/360 22�10� d 24�11� d 23�3� d*
24� L/120 25�3� f 25�3� f 28�0� d*
L/240 22�10� d 24�11� d 22�3� d*
L/360 19�11� d 21�10� d 19�6� d*
Notice: The Limiting Heights tables are based primarily on typical minimum physical and
structural properties (I x and S x ). Physical and structural properties may vary by region and
manufacturer. Request actual physical and structural property data from your local steel
framing manufacturer. Limiting criteria: d-deflection; f-bending stress, v-end reaction
shear.
* Studs exceeding 3660 mm (12 ft.) require mid-height anchor to exterior wall.
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