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 65
o be 3 inches and the return 1%inches in size; on the end of the main is placed a3x2-inch elbow, into which is screwed a 2-inchclose nipple. To the other end of the nipple isattached a 2xl%-inch elbow, into which the11/2-inch return is connected. Note two thingsparticularly, relative to this form… … HEATING AND VENTILATION 45 the same time permitting of the perfect drain-age of the condensation from the main. Second,note that, should a length of pipe for the returnbe screwed directly into the 2xli/2-inch reducing r=i Eiscr
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-20-1.webp)
