(b) A thin walled tube with an internal diameter of 35 cm and a wall thickness of 6 mm is subjected to an pressure of 70 kg/cm², an axial tensile load of 10000 kg and a twisting moment. The yield point stress in is 2800 kg/cm². Determine the maximum twisting moment that can be applied, based on the maximum ress theory.

(b) A thin walled tube with an internal diameter of 35 cm and a wall thickness of 6 mm is subjected to an pressure of 70 kg/cm², an axial tensile load of 10000 kg and a twisting moment. The yield point stress in is 2800 kg/cm². Determine the maximum twisting moment that can be applied, based on the maximum ress theory.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Vertical Stress Increase In Soil

Section: Chapter Questions

Problem 8.4P: A 10 ft diameter flexible loaded area is subjected to a uniform pressure of 1200 lb/ft2. Plot the...

See similar textbooks

Similar questions

Use Eq. (6.14) to determine the stress increase Δσ at z = 10 ft below the center of the area described in Problem 6.5.
Using Boussinesq’s Equation determine the vertical stress increase ΔϬz, at point C at a depth 3.0 meters , if the point loads at A,B and D are 200 KN, 400KN and 600KN respectively. ΔϬzC =_____________KN/m2.
An electric power transmission pole is 12 m above ground level and embedded 2 m into the ground. The butt diameter is 450 mm and the tip diameter (the top of the pole) is 320 mm. The weight of the pole, cross arms, and wires is 33 kN. Assuming the pole transmits the load as a point load, find the change in vertical stress in kPa at 2 m depth.
A 10 ft diameter flexible loaded area is subjected to a uniform pressure of 1200 lb/ft2. Plot the variation of the vertical stress increase beneath the center with depth z = 0 to 20 ft. In the same plot, show the variation beneath the edge of the loaded area.
Referring in the Fig. 2 below, B = 6m and q =150 kPa. For Point P, z = 2m and x = 1.5m. Determine the vertical stress at Point P.
The circular flexible area uniformly loaded (q=320KN/m^2). Determine the change in vertical stress: (a) at point A. (b) at a point 2m below point A
Referring to Figure Q2 (a), the vertical stress increase at point A is 25 kN/m2due to application of line loads q1 and q2. Determine the magnitude of q2.
An elevated structure is supported on a tripod. The legs are spaced 4 m apart and form the apexes of an equilateral triangle. Compute the increase in the vertical stress at a depth of 3m (i) beneath the point of intersection of the angular bisector (ii) beneath the centre of one of the sides of the triangle if each one of the legs carries a concentrated load of 1000Kn. Explain with diagram.
A strip load of q =53 kN/m^3 is applied over a width B =11m. Determine the increase in vertical stress in kPa at point A located z = 4.6 m below the surface. x = 8.2m
5. A thick layer of stiff saturated clay is underlain by a layer of sand under artesian pressure. A deep cut is made in the clay layer as shown in the attached figure. Determine: [2] a. The total stress at point A. b. The factor of safety against heaving at point A, if the effective stress is 12% of the total stress.
A 5-m-diameter tank supported on the surface of a soil deposit imposes a bearing pressure of 225 kPa (225 kN/m2). For a point 4 m below the tank base, compare the vertical stress increase due to the tank loading when:(a) the Westergaard conditions are assumed.(b) the 60° approximation is assumed.
The center of a rectangular area at the ground surface has Cartesian coordinates (0, 0), and one corner has coordinates (7, 18). All dimensions are in meters. The area carries a uniform pressure of 135 kPa. Estimate the stresses at a depth of 15 m below the ground surface at each of the following locations: (0, 0), (0, 18), (7, 0), (7, 18), and (12, 28).a. Obtain the values by the Boussinesq methodb. Compare the results with those of the 2:1 methodc. Comment on the resultsHint: In the Boussinesq method, the equations attached can be used.