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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.
find out the interior angleS with diagrame LINE AB, BC, CD, DE, EA Fore bearing 60''30" , 122'' , 46'' , 205''30" , 300''
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A nearly horizontal, 12 ft wide rectangular channel carries 60 cfs at a depth of 3.0 ft. The width of the channel is smoothly contracted to 6 ft at the downstream section. (a) Dete
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Question What is function of shear keys in designing of retaining walls ? Answer In formative external constancy of retaining walls, failure modes similar to bearing failure, s
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Question Are there any dissimilarity in methods of compaction between clayey soil material and sandy material ? Answer The three key actions of compaction are static
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