Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 533
(Fig. 18) substituted where conditionsdemand extra strength. A special moulded conduit construction made by W. H. Pearce and Co., is shown in cross-section in Fig. 16, and in application in Fig. 17. This is a patented conduit, and is made upin short lengths mth a heavy tar or asphalt um-coated… … 26- FiG. 18. Rectangular Conduit for Use under Roadways. The outer shell is of reinforced concrete—waterproofed on the outside. The conduitlining or insulation is made of materials possessing the highest insulating qualities. It is germ-proof and will not fall down or deterioate with age. It is…
Building · Heating · Ventilation
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
