Considering the effects of the prestressing forces (assume no loss) and the working loads (include the selfweight of the beam). Calculate the stress indicated below.. Calculate fbot at midspan. (MPa), consider sign convention (- for compression, + for tension) 5 kN/m EXCLUD In6 SELFWEI6HT 300 = P- P=300 kN ISM 400 木 de= 24 IN m3 N.A. 800 70

Q: Ź The bar AC is absolutely rigid and is pinned at A and attached to bar of copper DB and bar of…

A: BD = Copper and CE = SteelEst = 200 GPa Ecu = 90 GPa  αst = 12 × 10-6 /°C αcu = 18 × 10-6 /°C ∆T =…

Q: The linkage supports a force of 500 lb and rides along the top and bottom flanges of the crane rail.…

A: In the image, the object of interest is the linkage. We can see that the linkage is supported by a…

Q: 12. An aluminium (E = 70 GPa) column built into the ground has length, L = 3.0 m, and is under axial…

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Q: Two aluminum (Ea=77 GPa) rods AB and CD, and a steel (Es=202 GPa) rod EF support a 82.7 kN load P.…

A: solution:- We know that change in length is given by ∆l=P.LA.E So, here change in length is…

Q: The rigid beam is supported by the two bars shown in a horizontal position before the load P is…

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Q: A cantilever beam QT having rectangular cross sections with varying width h, and varying height b,…

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Q: Q2:If allowable stresses are at = max. value of W. W 2m 8m 165MPa, oc = 100MPa t = 70MPa determine…

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Q: A compound tube consists of a steel tube 150 mm internal diameter and 170 mm external diameter and a…

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Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.