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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.
Parallel Pipe Systems or Multipath Pipeline Problems Two or more sections of piping (branches) of different diameters, lengths and/or pipe materials originating and terminating
Q. What is Shock transmission unit in bridges? Shock transmission unit is fundamentally a device connecting separate structural units. It's characterized by its ability to tran
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Continuous Flow Systems: Transport by road, rail, air or ships takes place in vehicles which move along a path at intervals. As against this, continuous flow systems are those
Load Distribution Factor: The formula for deriving at the number of repetitions of the standard axle load during a design period of n years is: N =365 × A × VDF × F [(1 + r
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Design a 10 unit rapid sand filter system for a flow of 6.3 MGD with a filtration rate of 2 gpm/sq ft. and an L: W ratio of 1.3. Design flow (Q) = 6.3 MGD = 6.3x106 gpd =
Q. What are basic types of elastomeric bearings? Three basic types of elastomeric bearings are used. 1. Plain elastomeric pads 2. Steel reinforced elastomeric pads 3.
Question Is kerb necessary in road pavements? Answer In universal, kerbs are crucial in road pavements due to next cause- (i) They supply strength to sides of road
i want a complete flow chart of dry process of cement
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