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 30
... depth of perhaps one inch , its body being unaffected . Two inches of good concrete is ample protection against fire for I - beams or steel rod reinforcements . " When brick and terra - cotta are heated , no chemical action occurs , but ...
... depth of perhaps one inch , its body being unaffected . Two inches of good concrete is ample protection against fire for I - beams or steel rod reinforcements . " When brick and terra - cotta are heated , no chemical action occurs , but ...
Сторінка 63
... depths of 50 ft . and over . In heavy subaqueous operations concrete is also placed by constructing a coffer dam around the site , pumping out the water , and working in the dry or by placing large specially prepared blocks by means of ...
... depths of 50 ft . and over . In heavy subaqueous operations concrete is also placed by constructing a coffer dam around the site , pumping out the water , and working in the dry or by placing large specially prepared blocks by means of ...
Сторінка 74
... Depths . Depth in Feet . I 2 4 6 8 12 16 20 24 Pressure on Vertical strip , I foot wide in pounds ... Pressure on I square foot in pounds . 40 160 640 1440 2560 5760 10240 16000 23040 1280 1600 1920 80 160 320 480 640 960 in contact ...
... Depths . Depth in Feet . I 2 4 6 8 12 16 20 24 Pressure on Vertical strip , I foot wide in pounds ... Pressure on I square foot in pounds . 40 160 640 1440 2560 5760 10240 16000 23040 1280 1600 1920 80 160 320 480 640 960 in contact ...
Сторінка 75
... Depth of lumber . For spruce lumber and other woods commonly used in form construction , E may be assumed as 1,300,000 pounds per square inch . Formula ( 1 ) may be solved for I , from which the size of joist required may be readily ...
... Depth of lumber . For spruce lumber and other woods commonly used in form construction , E may be assumed as 1,300,000 pounds per square inch . Formula ( 1 ) may be solved for I , from which the size of joist required may be readily ...
Сторінка 126
... 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 . ---- Facing . It is customary now to use for ...
... 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 . ---- Facing . It is customary now to use for ...
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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.