San Francisco : Architect and Engineer, Inc · leaf 395
suitable steel reinforcing, could carrya heavier loading than precast concrete piles ofcorresponding size and length. Examination of the test boring logs showed astratum of dense sand with a suitable bearingvalue at a depth of 80 ft. below the surface. Lab-oratory tests on intervening materials… … Pouring concretemat reinforcedwith steel rods,for foundation. Over 7,000 cu.yards of concretewere used in thefoundation alone. Albert Harris,Photo ARCHITECT AND ENGINEER TELEPHONE BUILDING heavily loaded area with tubes in a staggeredplan, 3/2 ft. apart in one direction and 3 ft. 1 in.in the other.…
Architecture · Building
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