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Digital Provenance
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Transcription
q . The outside of brick shall be plastered and troweled, smooth with 1/2 inch of mortar composed of one part cement to two parts sand. The inside shall be plastered where so indicated on the plans. R. Frames, covers shall be of the type and duty shown on Las Vegas City plans, and shall conform to the Standard Specifications for gray iron castings, A.S.T.M. Spec, A-48-41, Class 20. VII. Pipe AX1 pipe shall conform to the sizes shown on the plan. Vitrified clay pipe, standard strength, shall conform to the A.S.T.M. Spec. C-13, Extra strength shall conform to the A.S.T.M. C-200. If glazed, the inside bell and outside spigot shall be scored in three parallel lines extending completely around the circumference. VIII. Concrete Work A. Water shall be clean and free from oil, acids, salt or other injurious substances. B. All cement shall be Portland and shall conform to the A.S.T.M. requirements C-150 Type I. C. Sand shall be such that not less than 85*^ shall pass through a 1/4 inch sieve, not more than 30^ through a 50-mesh „cJ.evej and not more than b % through a 100-mesh sieve,. D. Gravel shall be graded between a 1/4 inch ring and one-inch ring, Bank or crusher run will not be permitted unless authorized by City Inspector. ' #1 . 4 6
