ASD/LRFD Manual - American Wood Council

ASD/LRFD MANUAL FOR ENGINEERED Wood Construction
137
WH TSC/FCA 60-08
(floor or roof - suspended ceiling & fixtures,
optional insulation)
Fire Rating: 1 Hr
Finish Rating: 29 Minutes
Construction: Wood trusses (nominal 2x3) 24" oc, minimum
10" depth
Truswal metal truss plates
TrusGard Protective Channels applied to
bottom chord of each truss
Fire rated suspended ceiling - a minimum of
7-1/2" below the joist
Sheathing minimum 3/4"
WH TSC/FCA 60-10
(floor or roof - optional insulation)
Fire Rating: 1 Hr
Finish Rating: 45 Minutes
Construction: Wood trusses (nominal 2x3) 24" oc, minimum
10" depth
Truswal metal truss plates
Two layers 1/2" Type X gypsum board
Sheathing minimum 3/4"
90-Minute Fire Resistive Truss Designs:
WH TSC/FCA 90-02
(floor or roof - optional insulation)
Fire Rating: 90 Minutes
Finish Rating: 45 Minutes
Construction: Wood trusses (nominal 2x3) 24" oc, minimum
10" depth
Truswal metal truss plates
Two layers 5/8" Type X gypsum board
Sheathing minimum 3/4"
Two-Hour Fire Resistive Truss Designs:
Calculated Assembly by Kirk Grundahl, P.E.,
Qualtim International, 1997
(floor or roof)
Fire Rating: 2 Hr
Finish Rating: 90+ Minutes
Construction: Wood trusses (nominal 2x3) 24" oc, minimum
12" depth
Resilient channel 24" oc
Three layers 5/8" proprietary Type X gypsum
board
Sheathing minimum 23/32"
M16: FIRE DESIGN
16
American Forest & paper association