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QuestionDesign of concrete structures, normally most aggregate sizes are adopted with scopes from 10mm to 20mm. Does an increase of most aggregate size advantage structures? AnswerTo answer this query, let's consider the example of a cube. Surface area to volume ratio of a cube is 6/b that b is the length of cube. This implies that surface area to volume ratio reduces with an increase in volume. Then, when size of maximum aggregate is improved, surface area to be soaked by water per unit volume is condensed. Consequently, water requirement of concrete mixes is reduced accordingly so water or cement ratio can be lowered, resulting in a rise in concrete power. Though, increase of aggregate size is also accompanied by effect of reduced contact areas and discontinuities formed by these larger sized particles. In general, for utmost aggregate sizes less than 40mm, effect of lower water requirement could offset drawbacks brought about by discontinuities as recommended by Longman Scientific and Technical in 1987.
Explain a Critical Path The series of activities which determines the earliest possible date of project completion Usually defined as those activities with minimal or
Compute the safe bearing capacity of a square footing 1.5 m × 1.5 m, located at a depth of 1 m below the ground level in a soil of average density 20 kN/m 3 . = 20°, N c = 17.7,
Explain various forms of tension members.
what are the feature of single flemish bond?
Explain the Wetted Perimeter (P) The linear length of the interface between the fluid's cross-sectional plane edges in contact with the pipe or channel wall.
design procedure
Why IRC 37-2012 has taken 90th percentile for pavement design of expressway or NH while they hav taken 80th percentile for state highway design ????????
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Question In modeling a nonrigid mat foundation by using elastic springs, have a uniform modulus of subgrade reaction be used along whole base of mat ? Answer A bed of
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