The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 51
he cement; I have seen aggregates piled alongside the road,so dust-covered and so thoroughly mixed with dirt from teams drivmg over themthat at first glance one would think these piles of aggregate were simply dirt ex-cavated from the subgrade. 5. Dirty and unclean water used. 6. The concrete… … The Architect and Engineer 45
Architecture · Building
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