Estimatics Complete Questions and Correct Detailed Answers (Verified Answers)

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Estimatics Complete Questions and Correct Detailed Answers
(Verified Answers)
Area of a square or rectangle


Ans: Base x Height



Area of a triangle


Ans: 1/2 (Base x Height)



Area of a trapezoid


Ans: [(Base1 + Base2) / 2] x Height



Area of a circle


Ans: pi (3.14) x radius of the circle



Top chord


Ans: serves as a roof rafter



Bottom chord


Ans: serves as a ceiling joist; the length of this chord is the "span"



Webbing



pg. 1

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Ans: bracing that ties top and bottom chords together



Gussets


Ans: wood or metal plates that hold the pieces together at the joints



On-Center (o.c.) of the trusses


Ans: is the distance from the centerline of one framing member to the center of the
next framing member



3 - Tab Composition shingles


Ans: these range from 200 lb. to 240 lb. and are packaged three bundles per square



Waste for a gable roof - retangles


Ans: 10%



Waste for a hip roof - trapezoids and parallelograms


Ans: 15%



per square for comp shingles


Ans: assume 3 bundles (.33, .67, 00)



per square for wood shingles

pg. 2