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 175
... bending moment due to the live and dead loads , this involving the selection of ... stress as explained in the next chapter : b d2 1⁄2 l ( W + W ' ) - 74 ( 1 ) ... compressive face of the beam to the plane of the steel . W = the length of ...
... bending moment due to the live and dead loads , this involving the selection of ... stress as explained in the next chapter : b d2 1⁄2 l ( W + W ' ) - 74 ( 1 ) ... compressive face of the beam to the plane of the steel . W = the length of ...
Сторінка 176
... compressive stress in the concrete of 500 pounds per sq . in . , a ratio of 12 between the modulus of elasticity of concrete and that of steel , and a tensile stress in the steel ranging from 15,000 to 8,000 lbs . per sq . in ...
... compressive stress in the concrete of 500 pounds per sq . in . , a ratio of 12 between the modulus of elasticity of concrete and that of steel , and a tensile stress in the steel ranging from 15,000 to 8,000 lbs . per sq . in ...
Сторінка 188
... compressive stress for concrete . р the percentage of vertical steel reinforcement . r = the ratio between the ... stress than the column without bands , providing : ( a ) The wrapping is circular in form . ( b ) A thickness of two ...
... compressive stress for concrete . р the percentage of vertical steel reinforcement . r = the ratio between the ... stress than the column without bands , providing : ( a ) The wrapping is circular in form . ( b ) A thickness of two ...
Сторінка 196
... compressive stress from the upper to the neutral surface and of tensile stress from the lower to the neutral surface . The neutral axis is the intersection of the neutral surface with any plane . In Fig . 54 , the line f g is the ...
... compressive stress from the upper to the neutral surface and of tensile stress from the lower to the neutral surface . The neutral axis is the intersection of the neutral surface with any plane . In Fig . 54 , the line f g is the ...
Сторінка 198
... tension and the lower part in compression . Tension is greatest in the upper and compression in the lower surface , and between the upper and lower surfaces is the neutral surface where the moment stress is zero . In a cantilever beam ...
... tension and the lower part in compression . Tension is greatest in the upper and compression in the lower surface , and between the upper and lower surfaces is the neutral surface where the moment stress is zero . In a cantilever beam ...
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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.