Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 86
ponding separate return pipe—with the re-sult that frequently as many as ten or twelve11/2-inch or 2-inch flow and return pipes wererun on a residence job of ordinary size. Experience has shown that the amount offriction in one large pipe is much less than thatencountered in the number of small… … n 5 g cS w 66 HEATING AND VENTILATION it is necessary that friction in circulation bereduced to a minimum. The flow pipe or pipes are started at a pointabove the heater, from such a lieight as willallow of an upward pitch to the main or mainsto the extreme end of the system. The degree ofthis pitch…
Architecture · Building
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