UL Design Y729
2-Hour Fire Rated Steel Column — SFRM, wide-flange / pipe / tube
UL Design Y729 — wide-flange steel column, pipe or tube protected with SFRM (Isolatek Type 300/400/3000 families). For a W10x49: 1 hr = 7/16", 1-1/2 hr = 13/16", 2 hr = 1-1/8", 3 hr = 1-5/8", 4 hr = 2-1/8". Alternate equation h = R/(75(W/D)+32); separate pipe/tube table by A/P ratio. Optional metal lath for contour application.
W-shape/pipe/tube column, SFRM, thickness by W/D or A/P ratio and rating
The rest of 2-Hour Fire Rated Steel Column — SFRM, wide-flange / pipe… is for members
You're reading the opening of 2-Hour Fire Rated Steel Column — SFRM, wide-flange / pipe…. Members see the complete text, every cross-reference and the tools on this page — free for 14 days, no card required.
- Layer-by-layer components with thicknesses
- Cross-section diagram
- Applicable code sections and test standard
- 6 related assemblies