Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 134
nch 12 feetdeep. inabling the men to work therein and lay the pipe as inirdlnary moist sand trench.One alley ten feet wide where the trench Is 23 feet deepnd .^4 inches wide and the space between the ditoh andhe houses and fences about 33 Inches wide the spoil banksn some instances reached the top… … Backfilling with Waterloo power trench filler. Pipe aud PipemaUng. There is :i,640 feet of 10-inch machine made concreteIipe. There is 0,138 feet of 12-inch machine made concretepipe.
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