Houghton's Concrete Worker's Reference Books, Випуск 4N.W. Henley Publishing Company, 1911 |
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Сторінка 48
... estimated that one - half barrel of Portland cement , 8 cubic feet of sand , 11 square yards of metal - lath , and 6 pounds of mortar color will produce 100 concrete slate 14 " x 14 " square and " thick . These , when laid on the roof ...
... estimated that one - half barrel of Portland cement , 8 cubic feet of sand , 11 square yards of metal - lath , and 6 pounds of mortar color will produce 100 concrete slate 14 " x 14 " square and " thick . These , when laid on the roof ...
Сторінка 54
... estimate . The wind - load or pressure is usually estimated at a velocity of 100 miles per hour , which exerts a pres- sure against a vertical plane of forty pounds to the square foot ; this pressure is of course reduced when the roof ...
... estimate . The wind - load or pressure is usually estimated at a velocity of 100 miles per hour , which exerts a pres- sure against a vertical plane of forty pounds to the square foot ; this pressure is of course reduced when the roof ...
Сторінка 55
... estimated for light roofs at five pounds per square foot for spans not exceeding fifty feet , where the roof - trusses do not support the ceiling . For greater spans an increase of one pound per square foot is added for each 10 feet ...
... estimated for light roofs at five pounds per square foot for spans not exceeding fifty feet , where the roof - trusses do not support the ceiling . For greater spans an increase of one pound per square foot is added for each 10 feet ...
Сторінка 56
... estimated as follows : No. 5 wire weighs .1143 pounds to the linear foot , or 8 ' 9 " to the pound ; No. 8 wire weighs .0700 pounds to the linear foot , or 14 ' 4 " to the pound ; " steel bars weigh .375 pounds to the linear foot ...
... estimated as follows : No. 5 wire weighs .1143 pounds to the linear foot , or 8 ' 9 " to the pound ; No. 8 wire weighs .0700 pounds to the linear foot , or 14 ' 4 " to the pound ; " steel bars weigh .375 pounds to the linear foot ...
Сторінка 60
... estimated . 54-55 Lock - joint for chimney blocks , how molded .. 29 Machine for molding concrete slate .. 49-51 Molding an ornamental concrete roof . 44 Molding hip and ridge roll .. 53 Molds for chimney blocks .. 21-28 Monolithic ...
... estimated . 54-55 Lock - joint for chimney blocks , how molded .. 29 Machine for molding concrete slate .. 49-51 Molding an ornamental concrete roof . 44 Molding hip and ridge roll .. 53 Molds for chimney blocks .. 21-28 Monolithic ...
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24 for full 50 cents AIR-BRAKE Alternating Currents boilers cement Chap CHART chimney construction Coal compressive strength concrete slate Contains core crete dynamos edition electrical employed engravings factor of safety flue FORMULAS AND PROCESSES fully illustrated GARDNER gas engines give height HENLEY'S TWENTIETH CENTURY HISCOX India Rubber INTER-LOCKING BLOCKS J. V. WOODWORTH JOSEPH G kerfs large chimney lathe load Locomotive machine machinist manufacture mechanical metal-lath methods Milling cutters MILLING MACHINES modern MOLDING CONCRETE CHIMNEYS MOLDING CONCRETE ROOFS monolithic chimney monolithic concrete chimney monolithic concrete roof morocco mortar motors nailed NORMAN W O'CONOR SLOANE Ornamental Concrete patent permits placed practical treatise raising the forms rods ROOF TILES sections secured sheet-iron dividing-plates shown in Fig Shows side slabs slate or tile small chimneys square foot STEAM ENGINEERING steel strap-iron thickness tion TWENTIETH CENTURY BOOK Valve Gear vertical reinforcement volume Walschaert Valve Gear wire worker