Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 872
erly end of thework. Each is set on the ceiling slab in the arch section,at the tiottcm of short concrete-lined shafts e.xtending tothe surface. Above the shafts are constructed the rockand sand bunkers—chutes for carrying cement alsojiass throng the bunkers and shafts Thus all materialsare fed… … 1. 1 1 -■ - 1 *-- ^\.^ .>Ielliods of Concreting. The concrete in oi)en cut work was mixed in standardrctary mixers, set up on the edge of the cuts and wasplaced with chutes and buggies. The biggest portion wasplaced direct from chutes without wheeling. Previousto the installation of pneumatic…
Architecture · Building · Construction industry · Engineering
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