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 1020
headers, to the height required. The top course shall belaid as stretchers. The horizontal mortar joints shall not exceed.5 in. and the vertical joints .375 in. in thickness. The brick work shall be racked away around the entrance of theducts to afford room for turning: cables when installed. As… … ^o|| / I —i—
