A rigid steel plate is supported by three posts of high-strength concrete each having an effective cross-sectional area A=40,000 mm2 and length L=2 m (see figure). Before the load P is applied, the middle post is shorter than the others by an amount s=1.0 mm. Determine the maximum allowable load Pallow if the allowable compressive stress in the concrete is 20 MPa. (Use E=30 GPa for concrete.) P. L

A rigid steel plate is supported by three posts of high-strength concrete each having an effective cross-sectional area A=40,000 mm2 and length L=2 m (see figure). Before the load P is applied, the middle post is shorter than the others by an amount s=1.0 mm. Determine the maximum allowable load Pallow if the allowable compressive stress in the concrete is 20 MPa. (Use E=30 GPa for concrete.) P. L

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A horizontal load P is applied to an assembly consisting of two inclined bars, as shown in the figure. The cross-sectional area of bar (1) is 1.30 in.2, and the cross-sectional area of bar (2) is 1.75 in.2. The normal stress in either bar may not exceed 24 ksi. Determine the maximum load P that may be applied to this assembly. Assume dimensions of a=14.5 ft, b=9.0 ft, and c=14.5 ft. Determine the allowable force F1 in member (1) and the allowable force F2 in member (2).
The pins at B and D in the figure apply an axial load to diagonal bracing member BD. If BD has a rectangular cross-section measuring 0.50 in. X 2.00 in., what is the axial stress in member BD when the load is w0=220 lb/ft?
An aluminium hollow box column of square cross section is fixed at the base and free at the top. The width of each side is b=150 mm and the thickness t=10 mm. A compressive load P = 160 kN acts on the outer edge of the column at the midpoint of the side as denoted by P. What is the longest permissible length L of the column if the stress is not to exceed 100 MPa? (E = 70 GPa) b Section 4-A
A vertical load P is applied at the center B of the upper section of a homogeneous frustum of a circular cone of length L, minimum radius rB, and maximum radius rA, as shown in the figure below. It is made of a material with a modulus of elasticity E. Neglect the effect of its weight. Use the following values: rA = 2 in, rB = 0.5 in, L = 3 ft, E = 30 (103 ) ksi, and P = 1800 lbf. Discretize the original geometry into three equal-length finite elements and (a) Compute all the nodal displacements. (b) Compute all the element axial stresses. (c) Plot the displacement field from the finite element method solution. (d) Plot the axial stress field from the finite element method solution.
An AB copper bar is positioned at room temperature with a gap S of 0.0002m between the A end and a rigid constraint (see figure). The bar is supported at the B end by an elastic spring with elastic constant k= 210x10^6 N/m. Calculate the compressive stress on the bar if the temperature only on the bar increases by 27°C. (For copper, use σ = 17.5x10^-6/°C and E = 110 GPa). Despise the action of gravity
A rigid bar AB is hinged at A and supported by copper rod 2 m long and steel rod i m long as shown in fig. the bar carries a load of 20 KN at B. the cross section areas of steel and copper are 200 mm2 and 400 mm2 respectively find the stress in each ?rod if Es=210 GPa and Ec=83 GPa Copper rod- 2 m Steel rod. -1 m- 1 m 2m -1 m- B 20 KN
A uniform concrete slab of total weight W is to be attached, as shown in the figure, to two rods whose lower ends are on the same level. Determine the ratio of the areas of the rods so that the slab will remain level. Figure P-215 Steel E - 29 x 10 psi Aluminum E - 10 x 10 psi L- 4 ft L-6R Total Weight = w 3 ft 6 ft The value of the load P at the aluminum 0.33 W b. 0.67 W с. W d. none of the above The ratio between the internal reactions of the aluminum and the steel 2.03 b. 0.49 c. 0.67 d. none of the above The ratio between area of steel and area of the aluminun 0.867 b. 0.409 c. 0.258 d. none of these If the value of W is limited to 1500 lb, which of the statements is true? The maximum load the steel can carry is greater than of the aluminum The maximum load the aluminum can carry is greater than of the stell The sum of loads at the steel and the aluminum is twice the value of steel The deformation developed at the steel is greater than that of aluminum If the cross-sectional area…
PROBLEM 2. The carrier system in the figure consists of the AB rigid beam and two aluminum bars and a steel bar connected to it. After the assembly is created at 20 °C without causing any prestresses, calculate the stresses on the bars if the temperature is increased to 80 C. Steel A-36 A =160 mm? 3,5m 10 kN/m 3 m 3m 2 m 2014-T6 Aluminum A =200 mm E A,
Question #4 Bar (1) in the figure has a cross-sectional area of 0.75 in². If the normal stress in bar (1) must be limited to 30 ksi, determine the maximum load P (in kips) that may be supported by the system. The connections at A, B and C are pins. A 6 ft D B (1) 4 ft
As shown in the figure, a column has a 10-inch by 10-inch cross section. A compressive load P with magnitude of 250 lb is applied. Determine the compressive normal stress at the cross section “a” (fc). Calculate final stress values and units