Question: A 1 3 lag screw that has a 3 thread is used to attach an L - beacket to an asphalt - shingle roof. If
A lag screw that has a
thread is used to attach an Lbeacket to an asphaltshingle roof. If the combined
thiakness of the Ebracket, shimles, and roof memberne is inch, and if the screw penetrates directly into a roof truss
made of Southem Yellow Pine, into a properly sized pilot hole, then the withdrawal resistance will be closert io
a pounds
b pounds
c pounds
d pounds
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