UL Firerated

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Design No. X902

Rating - 4 HR.

1. Steel Column - Minimum size W10x49 with minimum air space from web to block of 8 in. and from flange to block of 3 3/16 in. See above illustration.
2. Concrete Blocks* - Various designs. Classificaon D-2 (2 hr).
3. Thick Bed Mortar - Blocks laid in 3/8 in. thick bed mortar of cement-lime Type S masonry cement and installed with vertical joints staggered or unstaggerd.

*Bearing the UL Classification Marking

U901 | X902 | U904| U905 | U906 | U910 | U912 | U913 | U914