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Texas Irrigation Technician Exam and Answers
1 column foot of water - .443 psi (pretty close to 5 ft. 1 psi - requires a column of water 2.31 feet tall (or 3 ft.) (or 27.75 in.) A backflow device - Any approved device that prevents an undesireable reversal of flow of water A.W.W.A. - American Water Works Association Absorption Rate - How fast a rate at which the soil will accept water Actual Head Pressure - The operating pressure measured at the base of a sprinkler head air gap - A complete physical separation between the free flowin...
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1 column foot of water - .443 psi (pretty close to 5 ft. 1 psi - requires a column of water 2.31 feet tall (or 3 ft.) (or 27.75 in.) A backflow device - Any approved device that prevents an undesireable reversal of flow of water A.W.W.A. - American Water Works Association Absorption Rate - How fast a rate at which the soil will accept water Actual Head Pressure - The operating pressure measured at the base of a sprinkler head air gap - A complete physical separation between the free flowin...