Mechanical drawing for plumbers; a concise, comprehensive and practical treatise on the subject of mechanical drawing (1910)
Starbuck, R. M. (Robert Macy), 1844-1927 · New York, The Norman W. Henley publishing co. · leaf 31
! Fie*. 30> Showing How Curve of Trap is Made Too Low Dowsio 28 MECHANICAL DRAWING FOR PLUMBERS … MECHANICAL DRAWING FOR PLUMBERS 29 the running trap of Fig. 30. The com-mon fault in drawing this fitting is tomake the curve of the trap too low down,that is, to give the trap- a much deeperseal than is it really has. Another faultshown in No. 2 as compared with No. 1,is the length of the straight…
Plumbing · Mechanical drawing
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