Estimatics Questions and Correct
Answers
Area of a square or rectangle - Answer: Base x Height
Area of a triangle - Answer: 1/2 (Base x Height)
Area of a trapezoid - Answer: [(Base1 + Base2) / 2] x Height
Area of a circle - Answer: pi (3.14) x radius of the circle
Top chord - Answer: serves as a roof rafter
Bottom chord - Answer: serves as a ceiling joist; the length of this chord is the "span"
Webbing - Answer: bracing that ties top and bottom chords together
Gussets - Answer: wood or metal plates that hold the pieces together at the joints
On-Center (o.c.) of the trusses - Answer: is the distance from the centerline of one framing member
to the center of the next framing member
3 - Tab Composition shingles - Answer: these range from 200 lb. to 240 lb. and are packaged three
bundles per square
Waste for a gable roof - retangles - Answer: 10%
Waste for a hip roof - trapezoids and parallelograms - Answer: 15%
per square for comp shingles - Answer: assume 3 bundles (.33, .67, 00)
Answers
Area of a square or rectangle - Answer: Base x Height
Area of a triangle - Answer: 1/2 (Base x Height)
Area of a trapezoid - Answer: [(Base1 + Base2) / 2] x Height
Area of a circle - Answer: pi (3.14) x radius of the circle
Top chord - Answer: serves as a roof rafter
Bottom chord - Answer: serves as a ceiling joist; the length of this chord is the "span"
Webbing - Answer: bracing that ties top and bottom chords together
Gussets - Answer: wood or metal plates that hold the pieces together at the joints
On-Center (o.c.) of the trusses - Answer: is the distance from the centerline of one framing member
to the center of the next framing member
3 - Tab Composition shingles - Answer: these range from 200 lb. to 240 lb. and are packaged three
bundles per square
Waste for a gable roof - retangles - Answer: 10%
Waste for a hip roof - trapezoids and parallelograms - Answer: 15%
per square for comp shingles - Answer: assume 3 bundles (.33, .67, 00)
