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 75
... span : in summer , six days ; in cold weather , two weeks . Beams and girders and long span slabs : in summer , ten days or two weeks ; in cold weather , three weeks to one month . If shores . are left without disturbing them , the time ...
... span : in summer , six days ; in cold weather , two weeks . Beams and girders and long span slabs : in summer , ten days or two weeks ; in cold weather , three weeks to one month . If shores . are left without disturbing them , the time ...
Сторінка 166
... Span and Loading . which the latter so largely enters , particularly in such structures as factories , walls , sewers , aqueducts , bridges , arches , chimneys , dams , tanks , foundations , etc. The economy of reinforced concrete ...
... Span and Loading . which the latter so largely enters , particularly in such structures as factories , walls , sewers , aqueducts , bridges , arches , chimneys , dams , tanks , foundations , etc. The economy of reinforced concrete ...
Сторінка 174
... span and part of the bars are bent up near the ends and anchored over the supports by bending . If the beam is con- tinuous the bent rods stop at the top , and in addition a system of horizontal rods is placed in the upper part of the ...
... span and part of the bars are bent up near the ends and anchored over the supports by bending . If the beam is con- tinuous the bent rods stop at the top , and in addition a system of horizontal rods is placed in the upper part of the ...
Сторінка 175
... span in inches . W = the external load on the beam in pounds and includes the weight of the floor slab which is supported by the beam . W ' the estimated weight of the beam itself in pounds . A = = the sectional area of the steel in ...
... span in inches . W = the external load on the beam in pounds and includes the weight of the floor slab which is supported by the beam . W ' the estimated weight of the beam itself in pounds . A = = the sectional area of the steel in ...
Сторінка 176
... span of 14 feet . Solution . An economical value for p is .007 ; W = = Assume W 5,000 lbs . , l 14 X 12 stituting in formula ( 1 ) we have : = 168 inches . = 15,000 lbs . Hence sub- b d2 = 1 X 168 ( 15000 + 5000 ) 74 420000 5676 74 ...
... span of 14 feet . Solution . An economical value for p is .007 ; W = = Assume W 5,000 lbs . , l 14 X 12 stituting in formula ( 1 ) we have : = 168 inches . = 15,000 lbs . Hence sub- b d2 = 1 X 168 ( 15000 + 5000 ) 74 420000 5676 74 ...
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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.