Cyclopedia of heating, plumbing and sanitation; a complete reference work . Ans. 16 inches. Since long horizontal runs of pipe increase the resistance andloss of heat, they should not in general be over 12 or 14 feet in applies especially to pipes leading to rooms on the first floor,or to those on the cold side of the house. Pipes of excessive lengthshould be increased in size because of the added resistance. Figs. 10 and 11 show common methods of running the pipes inthe basement. The first gives the best results, and should be usedwhere the basement is N While round pipe ri the be
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Ans. 16 inches. Since long horizontal runs of pipe increase the resistance andloss of heat, they should not in general be over 12 or 14 feet in applies especially to pipes leading to rooms on the first floor,or to those on the cold side of the house. Pipes of excessive lengthshould be increased in size because of the added resistance. Figs. 10 and 11 show common methods of running the pipes inthe basement. The first gives the best results, and should be usedwhere the basement is N While round pipe ri the best results, it is nol always possible to provide a sufficient •-pace for them, and Hat or oval pipesare substituted. When vertical pipes must be placed in single par-titions, much better results will !>»• obtained if the studding can !>»•. in. pig. n. Common Methods ol Running Hot-Air Plpy a separate pipe. In some cases, however, it isallowable to run a single riser to heat two unimportant rooms on anupper floor. A clear space of at least ] inch should be left betweenthe risers and studs, and the latter should be carefully tinned, and the TABLE IXDimensions of Oval Pipes Dim N of Pi PE Sqtj ire Inches aled to 5 in. 27 7 a 4 31 i a tt 3* tt 29 7 it 6 a 38 8 tt tt 5 n 43 0 a ?1 it 45 !i tt tt 6 a 57 9 t< tt 5 tt :.l 10 a a tt m 46 11 (i a 4 tt 12 li a V. tt 55 10 11 tt 6 it (17 11 it a 5 ti 67 14 ti a 1 it 76 15 li tt :;. tt 73 12 11 it 6 it 85 12 11 it 5 it , 19 it tt 1 ti 96 20 tt it 3* it 100 42
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