Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 220
ASSOCIATION OF ENGINEERING SOCIETIES. i6o pipe and the amount of water pressure available. It should be sufficiently large to supply water enough for a standard num- ber, say ten, successive strains on the water seal of a trap without refilling. The pneumatic apparatus permits of wider and more ac-… … Fig. 4. Fig. 4 gives a record of tests made by the hydraulic ap- paratus on different kinds of traps tested for resistance to siphoning action. The same strains are brought to bear upon each of the traps in succession, and you will observe by the horizontal lines the effect of each strain on the…
Engineering
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