Popular Hand Book for Cement and Concrete Users: A Comprehensive and Popular Treatise on the Principles Involved and Methods Employed in the Design and Construction of Modern Concrete Work ...Norman W. Henley Publishing Company, 1911 - 430 стор. |
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Сторінка 38
... pressure of the thumb without indentation , and it should also begin to whiten out at this early period . The specimen out of doors should be hard enough to remove from the moulds in 24 hours in ordinary mild weather , or 48 hours in ...
... pressure of the thumb without indentation , and it should also begin to whiten out at this early period . The specimen out of doors should be hard enough to remove from the moulds in 24 hours in ordinary mild weather , or 48 hours in ...
Сторінка 64
... Pressure of Concrete on Forms . - Dressing and Lubrication of Forms . - Design of Forms . - Removing Forms . - Cost of Forms . THE design and construction of forms are among the most difficult of the problems imposed upon the worker in ...
... Pressure of Concrete on Forms . - Dressing and Lubrication of Forms . - Design of Forms . - Removing Forms . - Cost of Forms . THE design and construction of forms are among the most difficult of the problems imposed upon the worker in ...
Сторінка 70
... pressure on opposite sides of the form , while the other two sides are secured by hardwood wedges between the bolts and the form . These are placed as close as possible to the ends of the bolts . c . Clamped frames , in which metal ...
... pressure on opposite sides of the form , while the other two sides are secured by hardwood wedges between the bolts and the form . These are placed as close as possible to the ends of the bolts . c . Clamped frames , in which metal ...
Сторінка 73
... Pressure of Concrete on Forms . - The forms for concrete must be strong enough to withstand the pressure of the " soupy " mass , and girder forms must be stiff enough so that their deflection as the weight increases will not cause ...
... Pressure of Concrete on Forms . - The forms for concrete must be strong enough to withstand the pressure of the " soupy " mass , and girder forms must be stiff enough so that their deflection as the weight increases will not cause ...
Сторінка 74
... PRESSURE ON FORMS PRODUCED BY CONCRETE AT VARIOUS DEPTHS . Depth in Feet . I 2 6 8 12 16 20 24 Pressure on Vertical strip , I foot wide in pounds ... 40 19 160 Pressure on I square foot in pounds ... 80 160 320 480 640 960 640 1440 2560 ...
... PRESSURE ON FORMS PRODUCED BY CONCRETE AT VARIOUS DEPTHS . Depth in Feet . I 2 6 8 12 16 20 24 Pressure on Vertical strip , I foot wide in pounds ... 40 19 160 Pressure on I square foot in pounds ... 80 160 320 480 640 960 640 1440 2560 ...
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50 cents abutment acid aggregate applied arch asphalt barrel bars bending bottom brick bridge broken stone building carrying cent centre chapter coat color columns compression compressive stress concrete blocks consists construction cost cracks crete cubic cubic foot depth diameter employed engineer face feet filled finish floor forms formula foundation girders gravel grout gypsum hardening horizontal hydraulic lime inches lath lime load machine manufacture masonry material metal method mixer mixing mixture mortar mould O'CONOR SLOANE obtained ornamental pile pipe placed plaster plaster of Paris Portland cement posts practical pressure Price proportions reinforced concrete reinforced-concrete removed resistance retaining walls rods Rule sand sewer shear slab slaked lime space span steel stirrups strength stress structure stucco surface tamped tanks tensile stresses tension tests tile trowel tunnel vertical waterproofing weight wire wooden
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Сторінка 25 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.