A bowstring truss should use horizontally laminated layers of wood to create the arched top chord, rather
than vertically laminated lumber, because _____.
a. the top surface is smoother, creating a better surface for fastening roofing materials
b. vertically laminated wood cannot be bent to form the required arch
c. the arched chord gains strength from the individual arched layers of wood
d. vertically laminated wood cannot be cut into an arched shape
b
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