Situation 9: An 8m deep braced cuts in medium clay is shown. The unit weight = 16.5 kN/m3 and the undrained shear strength Cu = 27.8 kPa. In the plan, the struts are placed at spacing 2.4m center to center. Using Peck's Empirical pressure diagram: 2|m 0.25|H 2 m H= 8 m 0.75 H 2|m 2m Pa = yh - 4Cu 41. Compute the actual load on strut A. A. 124.57 kN C. 116.47 kN B. 153.48 kN D. 162.81 kN 42. Compute the actual load on strut B. A. 33.29 kN C. 28.42 kN B. 40.54 kN D. 35.29 kN 43. Compute the actual load on strut C. A. 127.92 kN C. 131.95 kN B. 210.38 kN D. 199.68 kN

Q: The rectangular cross-section is 500 mm wide and 900 mm deep. Calculate the maximum shear stress in…

A: Find reactions:∑ MA=0RB3-21.50.8-15.82.1=0RB=16.8kN∑ Fy=0 R+RB-21.5-15.8=0  RA=20.5kN Max shear…

Q: a. Draw free body diagram b. Determine support reactions c. Determine stress in the cables d.…

A: In the problem, first the FBD diagram has to be drawn following which the support reactions will be…

Q: (1) 1.6 m B P 2.8 m (2) C

A:

Q: Compute the following given a built-up I-section with dimensions of bf = 350 mm, tf = 120 mm, hw =…

A:

Q: A rectangular reinforced concrete beam has a cross-section dimensions b=400mm andoverall depth h=…

A:

Q: A rectangular beam has a width of 300 mm and an effective depth to the centroid of the tension…

A: b=300 mmd=500 mmAs=6(π4)(25)2=2945.24 mm2Ac=2(π4)(25)2=981.75 mm2d'=62.5 mmf'c=27.58 MPafy=413.7 MPa

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.