ASD/LRFD Manual - American Wood Council
ASD/LRFD Manual - American Wood Council
ASD/LRFD Manual - American Wood Council
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<strong>ASD</strong>/<strong>LRFD</strong> MANUAL FOR ENGINEERED <strong>Wood</strong> Construction<br />
141<br />
UL – U338<br />
(wall – bearing/non-bearing, optional insulation)<br />
Fire Rating: 1 Hr<br />
Finish Rating: 20 Minutes with one layer, 59 Minutes with<br />
two layers gypsum<br />
Construction: <strong>Wood</strong> gable truss<br />
2 by 3 or 2 by 4 studs spaced 24" oc max,<br />
effectively firestopped<br />
One layer 5/8" gypsum board each side for<br />
non-bearing wall<br />
Two layers 5/8" gypsum board each side for<br />
bearing wall<br />
UL – U339<br />
(wall – bearing/non-bearing, optional insulation)<br />
Fire Rating: 1 Hr<br />
Finish Rating: 20 Minutes with one layer, 59 Minutes with<br />
two layers gypsum<br />
Construction: 2 <strong>Wood</strong> gable trusses<br />
2 by 3 or 2 by 4 studs spaced 24" oc max,<br />
effectively firestopped<br />
One layer 5/8" gypsum board each side for<br />
non-bearing wall<br />
Two layers 5/8" gypsum board each side for<br />
bearing wall<br />
Septum sheathed with plywood or<br />
mineral/fiber board (optional in bearing<br />
configuration)<br />
UL – U377<br />
(wall – bearing, required insulation)<br />
Fire Rating: 2 Hr<br />
Finish Rating: 47 Minutes with two layers gypsum<br />
Construction: Double row of nominal 2x4 studs, flat-wise,<br />
spaced 24" oc max, effectively firestopped<br />
Two layers 5/8" Type X gypsum board each<br />
side<br />
Septum filled with spray applied cellulose<br />
material<br />
Floor<br />
M16: FIRE DESIGN<br />
16<br />
<strong>American</strong> Forest & paper association
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