San Francisco : Architect and Engineer, Inc · leaf 952
On the necessity forcommercially pure iron in Offi^ce Buildings Wherever the metal will be ex-posed to air and moisture, aniron free from rust-promotingimpurities should be used. All window-frames and sashshould be made of rust-resist-ing iron, all skylights, cor-nices, guttering, down-spout-ing,…
Architecture · Building
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