San Francisco : Architect and Engineer, Inc · leaf 110
bars I 2 o.c. both waysand laid directly upon a prepared fill. Theprepared fill consists of an 8 inch layer ofgravel ranging from I/4 in. to % in. in size,placed on top of a 5 inch layer of sand overthe leveled-off natural ground, which is a clayor gumbo and very sticky when wet. To pre-vent the…
Architecture · Building
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