Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 444
Fig. 202. Open-Wall TrapPartly Cast. 370 PLUMBING 147 … Fig. 203, Common LeadDi-um or Pot Tiap. of brass, is shown in Fig. 202, the vent connection to wall being at A.This form of trap generally has a swivel-joint at B, which is below thewater line, so that the body may be swiveled to meet roughing-inopenings in any direction within two diam-eters of…
Architecture · Building · Carpentry
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