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 67
g with a crookedthread to throw the return straight with themain. 46 HEATING AND VENTILATION Wliere the elbow is placed on the end of thedry return for the drop connection into returnopening of boiler, an automatic air-vent shouldbe used, and this point should not be less than14 inches above the… … Fig. 25. Extension of Main in Building Too Long to Allow of DryReturns Throughout. at least one-half inch in each five inches oflength. Wlien supplying large radiators, thebranches, as a rule, should be one size largerthan the riser or radiator connection which theyfeed. It is w^ell to make…
Architecture · Building
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