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QuestionIn execution compression test for concrete, have to test cubes .Test cylinders be approved? AnswerEssentially, results of compression test carried out by using cubes are advanced than that by cylinders. In compression test, failure mode is in form of tensile splitting induced by uniaxial compression. Though, as concrete samples tend to enlarge laterally under compression, friction developed at concrete-machine interface generates forces which apparently increase compressive strength of concrete. Though, when ratio of height to width of sample increases, effect of shear on compressive strength becomes smaller. These explain why results of compression test by cylinders are lower than that of cubes.
Question What are thought in determining whether casings have to be left in for mini-piles ? Answer Contrary to most of pile design, design of min-piles is controlled
Explain Situations that warrant a damage inspection? - Floods - bridges located in streams, rivers and other waterways with known or suspected scour potential. - Build-up of
In a curved prestressed bridge , how ought to the guided bearings in piers of curved region be oriented with respect to a fixed bearing in abutment?
Define Recommendations for Design of PTFE Sliding Bearing? Other Recommendations for Design of PTFE Sliding Bearing 1. Expansion bearings having sliding surfaces of PTFE sha
what are the basic two division of surveying
Q. Show the Overlays on concrete bridge deck? After years of servicing, some overlays can be applied on the top surface of bridges. Overlays on concrete bridge decks achieve th
What is the Long Term Effects - Concrete Long term effects of loads on structures consider all the effects including creep and shrinkage.
Cement is usually purchased as a powdery substance that is mixed with sand, aggregate, gravel, and water to form concrete. As the cement itself is usually a powder, it is hard to c
Calculation of deformation For calculation of deformation at some stage before the total creep is reached, it may be assumed that about half the total creep takes place in f
The head (energy) loss in the piping system between points 1 and 7 is the most nearly. Solution: 3 ft. The difference between point 1 and point 7 = 10 ƒt - 7 ƒt = 3 ƒt
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