Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 72
nd may be hung on the walls of a room by meansof hook plates, or suspended overhead on hangers and rolls. Fig. 20 shows a common form for schoolhouse and similar work;this coil is usually made of 1^-inch pipe screwed into headers orbranch fees at the ends, and is hung on the wall just below the… … Fig. 19. Wroiight-Irou Pipe Radiator. 55 46 HEATING AND VENTILATION is called a viitcr coll, arid is used imder the same conditions as a trom-bone coil if there is room for the vertical portion. This form is notso pleasing in appearance as either of the other two, and is found onlyin factories or…
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