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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.
What is the easiest way to give proof the varignon''s theorem? Help please guys
with a neat well labelled, explain reciprocal ranging in surveying.
Question Give genuine reason that why are steel tubular marine piles often driven open-ended? Answer In marine structure where piles are constantly topic to major la
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the elevations of grid points for an area as follows: 1 2 3 4 5 6 7 8 F 690 709 726 732 735 740 743 747 E 696 715 729 736 740 737 739 740 D 702 723 733 742 737 737 745 747 C 707 72
The free float is equal to: a. Latest allowable event occurrence time + Early finish time b. Earliest event occurrence time + early finish time c. Latest allowable event o
1. On a 5-acre level terrain building site, an earthwork contractor has instructed her crew to strip and grub the topsoil of a 60,000-ft 2 proposed building pad to a minus 2-ft su
Determine the types of losses of prestress A loss of prestress will affect the stress distribution on a section of the member. It is therefore necessary to estimate the probabl
Calculate the Volume of Excavation Using the information given in Figure, the volume of excavation in yd 3 is most nearly: Solution: Use the average end area meth
Q. Local vehicle parapet strong enough to contain vehicles? Majority of local parapets are 1.1m high in addition they are designed to resist impact from a 1.5ton car moving at
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