block E is of steel and is insulated from C, on whichit is supported by a layer of Bakelite cement No. 5.From the block E extends a No. 16 copper wire withtriple braid weather-proof insulation, through a Vs-in.galvanized iron pipe. Evidently when Block E is in me-tallic contact with disk B an… … Fig. 12—Diaphragm cell for determining soilpressure Fig. 13—Apparatus for reading pressure on soilpressure cells the iron pipe until the circuit is broken and then meas-uring the air pressure, the soil pressure per square inchis directly determined. Distribution of Subgrade Pressure Fig. 13 shows…
Automobiles · Aeronautics
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