Wood Beam Relative to Flood Plane
Wood Beam Relative to Flood Plane
(OP)
Have a bit of an issue that came up with an Architect. The detail they wanted was the CMU going to the bottom of the floor joists as shown in the attached with the joists resting on top of the glulam beams. The problem is, they drew everything so that the free board was 12" between bottom of joist and top of flood line. My glulam beams to support the floor will be in the water in the event of a flood, with the detail drawn as shown.
I can't find a definitive answer in literature that doesn't say this is NOT OKAY/OKAY. Anyone have literature saying something definitive? It only happens at interior bearing on CMU columns, which is basically the entire building except the exterior walls.
I can't find a definitive answer in literature that doesn't say this is NOT OKAY/OKAY. Anyone have literature saying something definitive? It only happens at interior bearing on CMU columns, which is basically the entire building except the exterior walls.






RE: Wood Beam Relative to Flood Plane
RE: Wood Beam Relative to Flood Plane
1. The glulam beam has to be treated with a preservative acceptable for residential use.
2. Fasteners and hardware have to be corrosion resistant. This is as much to prevent damage from the wood preservative as it is from moisture / water.
See Table 2, on page 6, of AITC 109 Standard for Preservative Treatment of Structural Glue Laminated Timber.
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