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1Pool piping has to be tested for 15 minutes under a static water or air pressure test of not less than 24 psi with the exception of
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2Any portion of a pool having a water depth of 4 1/2 ft or less shall have a uniform slope that shall not exceed 3' of vertical in 10 ft. of horizontal.
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3A notice a pressure gauge reads 8-10 lbs over normal. You should:
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4copper tubing for water piping shall have a weight of not less than that of copper tubing type L, exception: type M copper tubing may be used for water piping when piping is above ground, in a building or underground outside of structures
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5The specific heat of air at standard conditions is .24 Btu/lb. The amount of heat needed to change the temperature of 462 lbs. of air from 45°F. to 72°F is:
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6Inflatable pools are covered in Art. 680, Part C. of NEC and do not fall under the bonding requirements of section 680-22.
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7The horsepower of the filter pump should be at least ______ for a small pool. (less than 15,000 gallons)
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8The foreman sends you six 10 foot and seven 5 foot sections of cast iron pipe. You must install it in a system requiring 93'4" of single hub pipe. How much will be left over?
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9A metal fence located 3 ft. from the shallow of a pool does NOT need to be grounded.
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10For water heating units rated up to, and including, 200,000 BTU/hr. input, the relief valve should be:
