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Problem: A beam of rectangular cross section 200mm deep and 100 mm wide. If the beam is 3 long, simply supported at either end and carries point loads as shown in figure.
(a) Calculate the maximum bending moment.
(b) Calculate the maximum stress in the beam.
(c) At the point of maximum stress sketch a graph of the stress distribution through the thickness of the beam, indicating which tensile and comprehensive stresses are.
(d) Determine the dimensions of the cross section which will minimize the maximum stress value if:
Show the dimensions of the proposed beam cross section with the aid of a sketch.
(e) Determine the percentage reduction of the maximum stress value when the new cross section is used.
However, design codes which deal with shear friction design place an upper limit on the magnitude of the shear force for which the plane can be designed. Explain why this is so.
The specimens cured at 150oC had an average shear strength of 620 psi, with a standard deviation of 20 psi. Those cured at 130oC had an average shear strength of 750 psi, with a standard deviation of 30 psi.
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The maximum and minimum dry densities, determined by standard laboratory tests, are 1.81 and 1.54 Mg/m^3, respectively. Determine the density index of the sand.
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x=1.5t^4-30t^2+5t+10 where x and t are exprerssed in meters and seconds, respectively. Determine the psition, the velocity and the acceleration of the particle when t=4 seconds
A tangent section of highway has a -1.0% grade and ends at station 4+75 and elevation 82 ft. It must be connected to another section of highway that has a -1% grade and that begins at station 44+12 and elevation 131.2 ft.
an embarkment will be constructed with the soil compacted to 95 percent of the max dry density. the borrow material, is deposited at a uniform density of 75 percent of the max dry density. the roadway embankment will require 75,000 cubic yards of ..
A 1 cm diameter, 0.4 m long steel rod is to be used in an application where it will be subjected to an axial tensile force of 15kN. The factor of safety based on yield stress must be at least 1.5, and the axial deformation must not exceed 2 cm.
A force is specified by the vector F= 120i-160j+80k lb. Calculate the angles made by F with the positive x-,y-, and z- axes.
Explain the components of Information Super Highway Infrastructure.
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