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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.
Determine the total head and total pressure of water flowing at in a pipe which has the following data: Flow= 2,500 gpm; Elevation = 30 ft; Pressure = 40 psi; Pipe Diameter =
Loss of Prestress due to Elastic Shortening of Concrete Due to elastic shortening of concrete, tendons are able to reduce their stretched length to the same extent upto which
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IS CODES FOR BUILDING DESIGN The codes which help engineers to design buildings are following: 1. IS 456-2000. For the design of plain and reinforced concrete it is code
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Question Give reason that why are most marine piles circular in cross section? Answer As marine piles, there are a number of options existing for selection, name as H-
Question What are main functions of cap block drive cap and pile cushion in driven piles? Answer Cap block is fit amid hammer end and drive cap to manage hammer bl
I want to ask about mathcad prime 2.0, when I want to save my work it shows that I can''t save it because Excel is busy ,, what I have to do to fix this problem ??
A -3.00% grade intersects a +1.25% grade at Sta. 85+80 and elevation 210.00 ft. A 350-ft vertical curve connects the two grades. Determine the station and elevation of turning po
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