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Weights and Measures: Cost

Cost of Lathing. - Laths are 4 feet long, 1½ inches wide, and are laid inch apart at the sides, and close together at the ends. A bunch of lath contains 100 pieces, and is estimated to cover 5 square yards of surface.

Cost of Clapboarding and Shingling.-Clapboards are usually cut 4 feet long and 6 inches wide, and are put up in bundles of twenty-five each.

Shingles are estimated at 9 shingles, laid 4 inches to the weather, to the square foot. Allowing for waste and defects, 1,000 shingles are estimated to cover 100 square feet, called a square. In practice, 1,000 shingles of the best quality will cover 125 square feet.

Or to find the number of shingles required in a roof: multiply the number of square feet in the roof by 9 if the shingles are exposed 4 inches, by 8 if exposed 4½ inches, or by 7 if exposed 5 inches. To find the number of square feet, multiply the length of the roof by twice the length of the rafters.

To find the length of the rafters at pitch, multiply the width of the building by .56 (hundredths); at pitch by .6 (tenths); at pitch by .64 (hundredths); at pitch by .71 (hundredths). This gives the length of the rafters from the apex to the end of the wall, and whatever they are to project must be taken into consideration.

By or pitch is meant that the apex or comb of the roof is to be to the width of the building higher than the walls or base of the rafters.