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Question
What is the reason that vibrators not used in concrete compaction in piling works?
Answer Concrete for piles must be a high-slump self-compacting mix that is capable of flowing between reinforcement cages with simplicity. As concrete is designed to be self-compacting, vibrators are not used for given that additional compaction. Furthermore, concrete in piles is compacted by power derived from free falling. Though, if vibrators are used, vibrated concrete can be compacted to sides of concrete casings and hinders lifting up of casings.
Q. Influence of Pressure in the Soil? Figure shows the stress state beneath a footing. The steady state situation prior to footing as well as qualitative variation of pressure
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Q. What is Stilling basins? Stilling basins are usually introduced to convert supercritical flow to subcritical flow before it reaches downstream. A typical stilling basin comp
Calculate the Actual Water Cement Ratio A jobsite delivery ticket is shown below for a grout mix. The actual w/c ratio is most nearly: Solution: Note, althou
A sand at a borrow pit is determined to have an in-situ dry unit weight of 18.4 kN/m 3 . Laboratory tests indicate the maximum and minimum unit weight values of 19.6 kN/m 3 and
State about the pre-tensioned concrete beam A pre-tensioned concrete beam, 200 mm wide and 300 mm deep, is prestressed by straight wires carrying an initial force of 150 kN at
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1. 130,000-yd 3 of banked soil from a borrow pit is stockpiled before being trucked to the jobsite. The soil has 18% swell and shrinkage of 8%. The final volume of the compacted
Question What are designing considerations for dowel bars in joints of concrete carriageway? Answer Behaviour of dowel bars resembles that of piles in soils subject
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