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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Результати 6-10 із 68
Сторінка 74
... arches , from 1 to 3 months . Design of Forms . - The following formula is employed in designing forms and is recommended by Sanford E. Thompson : Assume 1. Weight of concrete , including reinforcement , 154 lbs . per cu . ft . 2. Live ...
... arches , from 1 to 3 months . Design of Forms . - The following formula is employed in designing forms and is recommended by Sanford E. Thompson : Assume 1. Weight of concrete , including reinforcement , 154 lbs . per cu . ft . 2. Live ...
Сторінка 76
... Arches : of small size , one week ; for large arches with heavy dead load , one month . All of these times are , of course , simply approximate , the exact time varying with the temperature and moisture of the air , and the character of ...
... Arches : of small size , one week ; for large arches with heavy dead load , one month . All of these times are , of course , simply approximate , the exact time varying with the temperature and moisture of the air , and the character of ...
Сторінка 77
... arches the labor cost is much higher . Such work cannot be even approximately estimated from any rule of thumb , but must be carefully computed from the detailed plans of the structure ; taking account of the size of the job , the ...
... arches the labor cost is much higher . Such work cannot be even approximately estimated from any rule of thumb , but must be carefully computed from the detailed plans of the structure ; taking account of the size of the job , the ...
Сторінка 113
... arch or girder forms , the acid treatment is required . Tinting and Coloring . The use of colored or tinted surfaces ncludes : a . Pure white or cream - colored tints . b . Colors produced by the use of pigments . c . Colors obtained ...
... arch or girder forms , the acid treatment is required . Tinting and Coloring . The use of colored or tinted surfaces ncludes : a . Pure white or cream - colored tints . b . Colors produced by the use of pigments . c . Colors obtained ...
Сторінка 126
... arch and are not compacted at any considerable depth from the surface . Moulding blocks by pressure is therefore practical only in the two - piece system , in which the load is applied to the surface of pieces having no great thickness ...
... arch and are not compacted at any considerable depth from the surface . Moulding blocks by pressure is therefore practical only in the two - piece system , in which the load is applied to the surface of pieces having no great thickness ...
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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.