Problem 2 A composite beam made of steel and concrete has the dimensions and layout shownbelow. Determine (a) the location of the neutral axis; (b) The maximum allowable positivemoment for the beam cross-section; and (c) the maximum allowable negative moment for thebeam cross-section.= 200 GPa and a yield stress oy, steel == 25 GPa and a yield stress oy, concrete = 30 MPa.The steel has an elastic modulus Esteel275 MPa. Theconcrete has an elastic modulus EconcreteAssume that the concrete cannot carry any tensile stress.2500mm100mm10mm260mm6mm100mm

Answered: Image /qna-images/answer/863bc6c2-cbc3-44dc-9b44-1ae48b410775.jpg

Problem 2 A composite beam made of steel and concrete has the dimensions and layout shown below. Determine (a) the location of the neutral axis; (b) The maximum allowable positive moment for the beam cross-section; and (c) the maximum allowable negative moment for the beam cross-section. The steel has an elastic modulus Esteel = 200 GPa and a yield stress oy, steel = 275 MPa. The concrete has an elastic modulus Econcrete = 25 GPa and a yield stress oy, concrete = 30 MPa. Assume that the concrete cannot carry any tensile stress. 2500mm 100mm 10mm 260mm 6mm $10mm 100mm

Problem 2 A composite beam made of steel and concrete has the dimensions and layout shown below. Determine (a) the location of the neutral axis; (b) The maximum allowable positive moment for the beam cross-section; and (c) the maximum allowable negative moment for the beam cross-section. The steel has an elastic modulus Esteel = 200 GPa and a yield stress oy, steel = 275 MPa. The concrete has an elastic modulus Econcrete = 25 GPa and a yield stress oy, concrete = 30 MPa. Assume that the concrete cannot carry any tensile stress. 2500mm 100mm 10mm 260mm 6mm $10mm 100mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Compute for the beam shown. Use psi and psi. Does the compression steel yield in this beam at nominal strength?
A beam is reinforced for tension only unless its required steel ratio is _________ the maximum steel ratio required by NSCP 2015. Select one: a. greater b. smaller If the strain in the compression bar is less than that of the yield strain, is the value of fy equal to fs'? Select one: a. no b. yes
6- For a simply supported beam with b=300 mm and d=500 mm, if f = 63MPa, f, = 280 MPa and the net tensile strain is greater than 0.005, then the maximum steel ratio equal............ (a) 0.0406 (b) 0.0310 (c) 0.0287 (d) 0.0180 (e) None
The rectangular doubly reinforcement stress concrete block with the arrangement of reinforcement of 2N28 bars on top and 3N28 bars on bottom. The modulus of elasticity are Ec =23,500MPa and Es = 200,000MPa. Dead load is 18KN/m and live load is 12KN/m. f'c = 25MPa 800 730 N12 ligs (fx.t-500MPa) Ast = 3N28 350 Span = 10m Figure 3 Use the Transformed section approach considering the presence of steel. Calculate the concrete area and transformed steel area in both tension and compression shown in Figure 3. n=Es/Ec Ast=1232mm^2 Use n-1 for the transformed area to do the calculate. Unit: mm^2 with two decimal
Determine the axial compressive strength of an HSS steel with a length of 4.6m with respect to the principal axis. Use Fy = 318 MPa. Section Properties: A = 1742 mm2 ly = 3.29 x 106 mm4 Ix = 9.53 x 106 mm4 Answers: Pnmax = 238. 358 kW CIVIL ENGINEERING STEEL DESIGN 203.2 -3.2 -101.6- -3.2 T
Part A The composite beam is made of steel (A) bonded to brass (B) and has the cross section shown. Epr = 100 GPa, Est = 200 GPa. The allowable bending stress for the steel is (oallow)st = 180 MPa, and for the brass (oallow )br = 54 MPa . (Figure 1) Determine the maximum moment M that can be applied to the beam. Express your answer to three significant figures and include the appropriate units. HA ? M = 111.01 kN • m Figure < 1 of 1 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining 50 mm Provide Feedback 200 mm B M 175 mm
The composite bar is firmly attached to unyielding supports. Compute the stress in each material caused by the application of axial load P=50kips.
The T-beam shown in figure resulted from monolithic construction of the beam and slab. The effective flange width is 1100 mm and the uniform slab thickness is 120mm. Width of beam is 340 mm, total depth of the T-section is 590 mm. The centroid of steel is 70 mm from extreme concrete fiber. Concrete strength f’c= 21 MPa amd steel strength fy= 415 MPa. 1 Calculate the nominal strength of the beam for positive moment neglecting the contribution of the top reinforcement, KN-m A 428.55 B 503.20 C 355.96 D 637.52 2 Calculate the nominal strength of the beam for negative moment, KN-m A 289.88 B 275.53 C 311.67 D 325.48
5. The rod bar shown has steel, brass, and aluminum sections. Axial loads are applied at cross sections A, B, C and D. The allowable stresses are 125 MPa in steel, 70 MPa in the brass, and 85 MPa in the aluminum. Assume that the allowable stresses are the same for tension (T) and compression (C). (a) Determine the diameter required for the brass bar. (b) Determine the required diameter for the steel bar. (c) Determine the required diameter for the aluminum bar. Express your answer in millimeters. Steel Brass C Aluminum B A 100 kN 85 kN 200 kN 215 kN 0.5 m 0.5 m 0.5 m
The composite beam is made aluminum (A) and brass (B). If the height h-40mm determine the maximum moment that can be applied to the beam if the allowable bending stress for the aluminum is (Oallow) alu=128 MPa and for the brass (Oallow)brass= 35 MPa. Take Ealu=70 GPa and Ebras=105 GPa. 50 mm 150 mm
*4-36. The composite bar consists of a 20-mm-diameter A-36 steel segment AB and 50-mm-diameter red brass C83400 end segments DA and CB. Determine the average normal stress in each segment due to the applied load. Esteel l = 200 x10 Pa. EBrass = 101 K109h. |-250 mm-- 500 mm -250 mm- 50 mm 20 mm 75 kN 100 kN D A 75 kN 100 kN В C
Determine the prestressing steel area required for the precast concrete T-beam. Use the following data: Total moment = 250 kN-m Effective stress fse= 862 MPa Allowable concrete stress = f.=11 MPa Consider zero stress at the bottom of the beam I=3673x106 mm4 A=103125 mm² Eccentricity = 271.6 mm Centroid of steel is located at 100 mm from the bottom of the beam. Select one: a. 591.97 mm b. 789.29 mm 2. C. 443.98 mm 2. d. 986.61 mm