Handbook of mechanical and electrical cost data, giving shipping weights, capacities, outputs, and net prices of machines and apparatus, and detailed costs of installation, maintenance, depreciation and operation, together with many principles and data relating to engineering economics (1918)
Gillette, Halbert Powers, 1869-, Dana, Richard Turner, 1876-1928, joint author · New York, McGraw-Hill · leaf 994
trench. Where two or moreducts are used they shall be laid so as to break joints. When thepump log is laid and well settled in position, a creosoted plank ly^ins. thick and of the width of the conduit shall be laid on top of theducts. There shall then be driven one on -either side. 3 in. x 1.5 in.X… … Fig. 3. Method of laying pump log. by a cleat, of the same size as the stakes, cut to length and drilledfor two 31/^-in. wire nails. The trench shall then be refilled. Themethod of laying pump log is shown by Fig. 3. Lateral Conduit. Mayers Telephone Construction says lateralconduit, sometimes…
