The final choice of piping material for many applications, including fuel gases, is often controlled by _____.
a. building codes
b. the material cost
c. personal preference
d. the installing contractor
a. building codes
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Which types of roof membrane can be used above the insulating or foamed concrete roof insulation?
What will be an ideal response?
Lea Ann has plants between her house and the walk. The area is rectangular in shape, 6 feet wide and 62 feet long. In the back lawn, she has an elliptical bed with axes 14 feet and 18 feet and a birdbath in the center. She filled the beds with 9 inches of topsoil.
a. How many cubic yards of topsoil were needed to fill the rectangular
bed?
b. How many cubic yards of topsoil were needed to fill the elliptical
bed? Use the formula, A = ?SL, times the depth.
c. How many total cubic yards of topsoil were needed?
d. How many feet of edging were needed to enclose the elliptical
bed? Use the formula 
Despite the war, 300,000 people migrated to the West, lured mainly by
A. the prospect of free land under the Homestead Act. B. the ability to push Indians off their land without government interference. C. the opportunity to flee from federal draft laws. D. the hope of fleeing slavery. E. None of these choices are correct.
What is the difference between heat loss and heat gain?
A) Heat loss occurs in well insulated houses, and heat gain occurs in poorly insulated houses. B) Heat loss occurs in poorly insulated houses, and heat gain occurs in well insulated houses. C) Heat loss occurs in the summer, and heat gain occurs in winter. D) Heat loss occurs in the winter, and heat gain occurs in summer.