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B-General Building 1

Estimating/Basic Math

1 Mile = (feet) 5280 feet
1 Cubic Foot of Water = (gallons) 7.5 gallons
1 Acre = (square feet) 43,560 sq. feet
1 Sq Mile = (acres) 640 Acres
1 Meter =(Feet) 3.3 Feet
1 Inch = (Centimeters) 2.54 Centimeters
1 Roofing Square = (square feet) 100 square feet
1 cu. yard = (Sq. feet of 4" slab) 81 square feet
60 lb. concrete bag covers _______ cubic feet .30 cubic feet
The formula for the area of a Circle is pi x radius squared
The area of a circle is always _______ the percentage of the surrounding square area 78.5%
How many bundles of 30-year composition shingles are in one square of roof 3
How many bundles of shake shingles are in one square of roof 5
How many bundles of shingles are normally in one square of roof 4
When estimating the shingles, I need to know the __________ exposure
When estimating the metal, you need to know the ___________ coverage
1 roll of #15 felt generally covers 430 sq. feet
A roll of #30 felt generally covers 215 sq. feet
On a Flat-Roof, you are required to use ________ felt 2 layers of
Chimney Flues that are under 10 feet should be ___________ 1/8 the area of an opening
Chimney Flues that are over 10 feet should be __________ 1/10 the area of an opening
Modified Bitumen may be used on a flat roof if the slope is at least 1/4 : 12
Created by: yobryan2009