Compute the forces in the concrete and steel. The compression forcein the concrete isC. = 0.85 x 5 ksi x 4.54 in. X 16 in. = 309 kipsThe force in the tension reinforcement is= -60 ksi X 4 in.? = -240 kipsSince a = 4.54 in. is greater than d2 = 2.5 in., Eq. (11-13b) is used to compute F2.E2 = (48.7 – 0.85 x 5) x 4 = 178 kips

Force in the reinforced beam is divided into concrete and reinforcement. Reinforcement can be in the…

Answered: Compute the forces in the concrete and…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Determine the shear strength of a 1⁄2-in. 3 2 1⁄2-in. stud, where there are two studs per rib. The 28-day compressive strength of the concrete is f ,c =4 ksi (Ec = 3492 ksi).
Find the maximum allowable value of P for the column. The cross-sectional areas and working stresses (w) are shown in the figure. DRAW THE FREE BODY DIAGRAM.
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USE NSCP 2010 A reinforced rectangular concrete beam has a width of 250 mm and aneffective depth of 360 mm. It is reinforced for tension only at the bottomwith a total tension steel area of 600 mm². fc’ = 40 MPa, fy = 400 MPa. a. Determine the tension reinforcement index for this beam.b. Determine the distance of the neutral axis below the compressionsurface. c. Determine the ultimate flexural strength of the beam.
21. The column of reinforced concrete is loaded with P = 8000 lbs. The modulus of elasticity (E) is 4.2E6 psi and the Poisson ratio is 0.15. 16in 16in What is the normal stress along section b-b? a. -15.625 psi b. -7.81 psi c. -2.60 psi d. -11.04 psi
Situation no. 1: Calculate the bending stresses in the concrete and the reinforcing steel, using the transformed area method: fc= 3000 psi, normal- weight concrete, n= 9, M = 250 ft-k. %3D -bym 60 in. - 1. Bending stress of concrete. a 0.057psi My = 5 in. b. 57ksi 不 A,=6 hars C. 6840 ksi d= 28 in. 684psi e. 2. Bending stress of steel. a. 24 4ksi b. 2.03 ksi C. 24354.00ksi 2.71ksi b12 in. d. e.
4. Analyze the beam shown below given fe' = 3500 psi and fy= 60,000 psi: (a) Use d = 22 in. (effective depth of tension reinforcement), assuming the compression steel yields at the ultimate stage, calculate the reinforcing ratio of flexural reinforcement. (b) Is the beam underreinforced or overreinforced? Show reasons to your answer. (c) Calculate the nominal flexural strength of the section: M,? (d) Determine the design capacity of the section: øMn.
Situation 17: A rectangular beam has a width of 300mm and an effective depth to the centroid of the tension reinforcement of 600mm. The tension reinforcement has an area of 4762mm2 and the area of compression reinforcement placed 62.5mm from the compression face of the beam is 987.5mm2 fy=414.6 MPa, fc’=34.56 MPa. Balanced steel ratio is 0.034. Assume that steel yields. Determine the depth of compression block. Determine the design strength. Determine the concentrated live loads at the midspan in addition to a dead load of 20kN/m including the weight of the beam if it has a span of 6m.
The total compressive force at the time of failure of a concrete beam section of width 'b' without considering the partial safety factor of the material is (a) 0.36 fok b Xu (c) 0.66 fok b Xu (b) 0.54 f b Xu (d) 0.8 f b X, ck where X, is the depth of neutral axis, f cube strength of concrete. ck
Please do the questions 2.2 and 2.3 i will be very very appreciate!!!! In question 2.1:dn=215.4 mm Icr=2664863900 mm4
Design the slab reinforcement if the maximum positive moment is Mup=wul2/11 . and the maximum negative moment is Mun=wul2/10. Include the design for S&T bar. Given: length = 10.9 m span = 3m Wu= 8.572 kPa Slab thickness = 150 mm f'c = 28 MPa fy= 414 MPa main bar = 10 mm s&t bar = 8mm
hinz 1. For the beam cross section below, determine the amount of steel As required to cause the strain in the tension steel & to be 0.005 just as the maximum strain in the concrete reaches 0.003. fc' = 3000 psi and fy = 60,000 psi. N.A. b= 10"- Cross Section d = 23" [7422 4233 134 S THE THE CALE DES 2 23-c me Like phans 0.005 PANE Strain 0.003 P HOME st 0.85f Stress 6 I.C. Nc NT * * * * * Delorme

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