The normal and shear stresses acting on element A are 6,650 psi, 17,600 psi, and 2,700 psi (see part (b) of the figure below). (Consider only the in-plane stresses - the stresses in the xy-plane). 17,600 psi B LA 6,650 psi A Cross Side |2,700 psi View Section (a) (b) Determine the maximum shear stresses (in psi), associated normal stresses (in psi), and angles of the principle planes (in degrees counterclockwise from the +x-axis). (For maximum shear stress, enter the magnitude. For normal stresses, use t sign convention for stresses acting on inclined sections.) Tmax psi psi 02 psi • counterclockwise from the +x-axis ° counterclockwise from the +x-axis p1 %3D p2

EB and FG are two planes inside a soil element ABCD as shown in Figure 10.50. Stress conditions on the two planes are Plane EB: EB = 25 kN/m2; EB = +10 kN/m2 Plane FG: FG = 10 kN/m2; FG = 5 kN/m2 (Note: Mohrs circle sign conventions for stresses are used above) Given ; = 25, determine: a. The maximum and minimum principal stresses b. The angle between the planes EB and FG c. The external stresses on planes AB and BC that would cause the above internal stresses on planes EB and FG

Two line loads q1 and q2 of infinite lengths are acting on top of an elastic medium, as shown in Figure P8.6. Find the vertical stress increase at A.

The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular cross section of 0.2011in.2 in area and a gage length (the length over which the elongation is measured) of 2.000 inches. The specimen was not loaded to failure. a. Generate a table of stress and strain values. b. Plot these values and draw a best-fit line to obtain a stress-strain curve. c. Determine the modulus of elasticity from the slope of the linear portion of the curve. d. Estimate the value of the proportional limit. e. Use the 0.2 offset method to determine the yield stress.