The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 318
r lines hasalready been undertaken. There is a strong feeling in employersassociations, aroused by the treatmentaccorded them by general contractors,and made intense by the lowering ofstandards of work to which the best menare cominitted, and there is little doubtthat they might, if they would… … PRATT BUILDING MATERIAL GOS WASHED GRAVEL This cut shows our concrete mix, or washed gravel, composed of 30% of sand fromO.to ^s. 25% of crushed rock from yi to 1}^^ and 45% of gravel from ?8 to IK- Thismixture contains only 21% of voids, just space enough for the cement and water. We shipgravel…
Architecture · Building
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