ESTIMATICS Area of triangle - CORRECT ANSWER -1/2 base x height Area of trapezoid - CORRECT ANSWER -[(Base1 + Base2)÷2] × height Area of circle - CORRECT ANSWER -Pie x r2 Top chord - CORRECT ANSWER -Serves as a roof rafter Bottom Chord - CORRECT ANSWER -Serves as a ceiling joist Span - CORRECT ANSWER -Length of bottom chord Webbing - CORRECT ANSWER -Bracing that ties top and bottom chords together Gussets - CORRECT ANSWER -Wood or metal plates that hold the pieces together at the joints Span of a truss - CORRECT ANSWER -Width of building On Center - CORRECT ANSWER -Distance from centerline of one truss to the centerline of an adjacent truss Length of building - CORRECT ANSWER -Distance from end wall to end wall Slope of truss - CORRECT ANSWER -Inches of vertical rise in the top chord of the truss in 12 inches of horizontal run Roof sheathing - CORRECT ANSWER -Applied to top chord of trusses or roof rafters to support roofing material; forms the deck for roofing material
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