The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 98
i^ Fig. 1 … Fig. 2 92 The Architect and Engi)iecr preventing the mixing of the inflowing pure water with the used water inthe pool. The advantage of this moving bulk-head is an enormous increaseof efficiency of the sand filter by preventing the mixing of the inflowingpure water with the used water in the pool.…
Architecture · Building
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