Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 249
City or H^jatos^ Bxach, Cai,ip CH.ATCHi.ev CITY ENGIfJEtf- … parts clean washed sand and gravel that will passthrough 1-4 inch mesh screen, and be retained on 60 meshscreen when screened dry. 3. REINFORCING—The shaft of each Standard shallbe reinforced with four 1-4 inch square twisted steel rods,spaced equally around center of shaift and within 3-4inches of…
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