Answer is 29.8 and 106 .3 kN/m .if u got please upload 10.28 A reinforced concrete beam has a cross-section as shown in figure 10.22. Theallowable tensile stress in the steel is 120 MPa and the allowable compressivestress in the concrete is 6 MPa. If it is to be an economic section and themodular ratio is 15, calculate (a) the diamater of the three reinforcing rods;(b) the total moment of resistance of the beam.550 mm75o00200400 mm

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Answered: 10.28 A reinforced concrete beam has a…

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

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The doubly-symmetric beam cross section shown in Figure P12.3b has been proposed fora short foot bridge. The cross section will consist of two identical steel pipes that are securelywelded to a steel web plate that has a thickness of t = 9.5 mm. Each pipe has an outside diameterof d = 70 mm and a wall thickness is 5 mm. The distance between the centers of the two pipes ish = 370 mm. Internal forces of P = 13 kN, V = 25 kN, and M = 9 kN·m act in the directionsshown in Figure P12.3a. Determine the stresses acting on horizontal and vertical planes:(a) at point H, which is located at a distance of yH = 120 mm above the z centroidal axis.(b) at point K, which is located at a distance of yK = 80 mm below the z centroidal axis.Show the stresses on a stress element for each point.
The doubly-symmetric beam cross section shown in Figure P12.3b has been proposed fora short foot bridge. The cross section will consist of two identical steel pipes that are securelywelded to a steel web plate that has a thickness of t = 9.5 mm. Each pipe has an outside diameterof d = 70 mm and a wall thickness is 5 mm. The distance between the centers of the two pipes ish = 370 mm. Internal forces of P = 13 kN, V = 25 kN, and M = 9 kN·m act in the directionsshown in Figure P12.3a. Determine the stresses acting on horizontal and vertical planes:(a) at point H, which is located at a distance of yH = 120 mm above the z centroidal axis.(b) at point K, which is located at a distance of yK = 80 mm below the z centroidal axis.Show the stresses on a stress element for each point.FIGURE P12.3a FIGURE P12.3bP12.5 An extruded polymer flexural member is subjected to an internal axial force of P = 580 lb,an internal shear force of V = 420 lb, and an internal bending moment of M = 6,400 lb·in.,…
A cantilever beam, 80 mm wide by 240 mm high and 8 m long, carries a load that varies uniformly from zero at the free end to 1100 N/m at the wall. Compute the magnitude of the maximum flexural stress. Answer must be in MPa.
A cross section of a prestressed bonded beam is reinforced by prestressing tendons having a total area of 925 sq.mm. Specified yield strength of prestressing tendon is 1610.75MPa. Specified tensile strength of prestressing tendon is 1895MPa. And specified compressive strength of concrete of 34.6 MPa. The beam has a width of 300mm and a total depth of 600mm. Distance from the extreme compression fiber to the centroid of prestressing tendon is 490 mm, Pi=1387.5 KN , R=0.8 and Eps=196 GPa a. What is the increased strain corresponding to the decompression of concrete at the level of the steel centroid? b.Using modified strain compatibility analysis, what is the total steel strain? c. Using modified strain compatibility analysis, what is the total steel strain? d. What is the stress in the prestressed reinforcement at nominal strength, fps, using modified strain compatibility analysis? e. What is compressive force on concrete using fps, modified strain compatibility analysis?
A cross section of a prestressed bonded beam is reinforced by prestressing tendons having a total area of 925 sq.mm. Specified yield strength of prestressing tendon is 1610.75MPa. Specified tensile strength of prestressing tendon is 1895MPa. And specified compressive strength of concrete of 34.6 MPa. The beam has a width of 300mm and a total depth of 600mm. Distance from the extreme compression fiber to the centroid of prestressing tendon is 490 mm, Pi=1387.5 KN , R=0.8 and Eps=196 GPa 1. What is the strain resulting from the application of the effective prestressing force? 2. What is the increased strain corresponding to the decompression of concrete at the level of the steel centroid? 3. Using the stress strain graph below, what is the total steel strain for fps equal to 1689.275 MPa? 4. Using modified strain compatibility analysis, what is the total steel strain? 5. What is the stress in the prestressed reinforcement at nominal strength, fps, using modified strain compatibility…
Our University wants to construct a swimming pool inside the campus, for which they are in need of a diving board which must be one end fixed and other is free. That is to be made up of flexible composite material. The maximum allowable load at free end is 700 kN. The length of the cantilever beam is 1.6 m. The cross section of the beam is a hollow rectangular section. Outer rectangle of size 140 mm breadth and 110 mm depth with the overall wall thickness of 12 mm. Find the deflection at the free end and maximum slope in beam by neglecting self-weight of the diving board. Take E as 170 GPa.
Example 4:Determine ΔA, and θB for the statically determinate cantilever beam.Use 750 x 800 square sectionE(40MPa) = 28 GPa
A beam is of T section, as shown in fig. The beam is simply supported over a span of 4m and carries a UDL of (1.7+32.) kN/m run over the entire span. Determine the maximum tensile and maximum compressive stress
Floor joists are structural members which support flooring in structures, as in the diagram on the right. The floor sits upon the minor length of the joist, and the joists are set at equal spacing to reach the desired floor stiffness. How many 2x6 joists would it take to equal the floor stiffness of the same floor supported by ten (10) 2x12 joists of the same species?
Find the formula for the maximum stress of a cantilever beam that have four concentrated load at any arbitrary point and a uniformly distributed load due to the own weight of the beam. Let E be the modulus of elasticity.
A flat steel bar, 27 mm wide by 5 mm thick and 1.7 m long, is bent by couples applied at the ends so that the midpoint deflection is 22 mm. Compute the maximum stress in the bar. Use E = 210 GPa. Answer must be in MPa.
Derive the formula of the critical radius for spherical wall.

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