14 in.Find the stress (in psi) in the concrete.UFind the stress (in psi) in the steel.YFind the total axial deformation (in inches) ofthe column.G A 14-in. square concrete post is 6 ft. tall and isreinforced with nine %-in.-diameter steelbars as shown. A compressive load of350,000 lb is applied to this column. Themodulus of elasticity is 29,000 ksi for steeland 4,500 ksi for concrete.14 in.14 in.Find the stress (in psi) in the concrete.UFind the stress (in psi) in the steel.Y

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Answered: A 14-in. square concrete post is 6 ft.…

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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A symmetrical cross-section of a reinforced concrete shown has a value of f'c = 26.27 MPa and fy = 414 MPa. Calculate the nominal capacity based on the maximum steel area for a tension- controlled condition. Use the following dimensions: b = 498 mm d = 709 mm t = 152 mm web thickness - 152 mm b 1 I d
A rectangular beam has the dimensions (see Figure) b = 12 in, h= 20 in, and d= 17 in. and is reinforced with three No. 9 (No. 29) bars so that As - 3.00 in?. The concrete compressive strength fe is 4000 psi, and the tensile strength in bending (modulus of rupture) is 475 psi. The yield point of the steel f, is 60,000 psi. Determine the stress in the steel caused by a bending moment M = 10 ft-kips. 9 - 6.78 in, I- 4067 in, Es = 29000000, E - 3600000 L17 in. 20 in. 3 #9 bars (A, - 3.00 in.) 3 in. -12 in.- Select one: a. 2525 psi b. 2412 psi C. 2615 psi d. 2817 psi
A rectangular beam has the dimensions (see Figure) b = 12 in., h - 20 in, and d 17 in. and is reinforced with three No. 9 (No. 29) bars so that As - 3.00 in. The concrete compressive strength fe is 4000 psi, and the tensile strength In bending (modulus of rupture) is 475 psi. The yield point of the steel f, is 60,000 psi. Determine the concrete compression stress at the top fiber caused by a bending moment M- 10 ft-kips. 9- 6.78 in, I= 4067 in, Es= 29000000, E = 3600000 17 in. 20 in. 3 #9 bars (A, - 3.00 in.?) 3 in. -12 in- Select one: a. 390 psi b. 1390 psi c. 200 psi d. 250 psi
Concrete re in orced a enially with eight steel column bars as shown in Fig. Each bar has diametes of 25 mm It opplied load 4 KN, compute the is 180 Gpa and 3. materi al. Es Stress developed in Ec = 12 Gpa. each 500mm %3D 500mm in
The maximum load of 200 KN was applied on a cylindrical specimen of concrete. Find the split tensile strength in MPa. Take depth as 150 mm and length as 300 mm.
Problem 1: Transformed Moment of Inertia and Elastic Deflection Given: The center of the top and bottom rebars are placed 2.5" from the top and bottom faces. Top Reinforcement: 2 no. 4 Rebar Bottom Reinforcement: 4 no. 9 Rebar Use textbook table A-1 for rebar properties Es = 29,000 ksi Ec = 3,600 ksi Unit weight of plain concrete = 145 lb/ft³ a. Find the transformed moment of inertia of the composite section. b. Calculate the reinforcement ratio p where p is Asb/bd. Asb is the area of the bottom steel, d is the depth from the top face of the beam to the bottom steel, and b is width of the beam. 16" c. A 30' simply supported beam has this cross-section. Ignoring the effects of cracking, how much would the beam deflect under its own self-weight and a live load of 0.64 kip/ft? d. Often the unit weight for reinforced concrete is assumed to be 150 lb/ft³. Repeat part c. using this assumption. e. Repeat part c. using the gross moment of inertia. Note: the gross moment of inertia is the…
A. Calculate the stress in the concrete at the top and bottom extreme fibers under a positive bending moment of 78 kip, in psi (neglect steel reinforcement) B. If fc= 3200 psi and normal weight of concrete is used, does cracking occurs? What is the maximum uniformly distributed load the beam can carry if it is used as a simple beam with a 26 ft span without exceeding the modulus of rupture of the concrete, in lb/ft? 250 mm 80 mm 130 mm 80 mm 80 mm
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
Item 5 Column AB is made from high strength pre-cast concrete and reinforced with four in diameter A-36 steel rods. The allowable normal stress for the high strength concrete and the steel are (allow) con = 2.6 ksi and (allow) st = 24 ksi, respectively. The modulus of elasticity for high strength concrete is 4.2 x 10³ ksi and for A-36 steel is 29 x 10³ ksi. (Figure 1) Figure 1 ▾of 1 10 ft a P B9 in. 9 in. Section a-a Part A Determine the magnitude of the maximum allowable floor loading P. Express your answer to three significant figures and include the appropriate units. μA Pmax= 158.91 kips Submit My Answers Give Up Incorrect; Try Again; 2 attempts remaining ? Provide Feedback Continue
Three high-strength concrete poles, with an effective cross- sectional area of 40, 000m * m ^ 2 and a length of 2 m, support a stiff steel plate. The center post is 1 mm shorter than the others before the load P is applied. If the concrete's allowed compressive stress is 20 MPa, calculate the maximum load that can be carried. E = 30GPa for concrete
Determine the values of the distance cfrom the extreme concrete corppression fibers to the neutral axis, andr, for the beam shown in the following Figure fy 60,000 psi and fc 3000 psi. 0.003 21 in d-c 389 bars 3.00 in) = (0.003) 12 in Select one: a. 6.90 in, 0.0061 b. 6.25 in, 0.0069 c. 7.50 in, 0.0085 d.5.93 in, 0.0076
Determine the required tension steel area of the T beam with given properties below. Width of flange bf= 410 mm Width of web bw = 250mm Thickness of flange tf = 130 mm Effective depth d = 380 mm Effective concrete covering d' = 75 mm Compressive strength of concrete fc' = 34 MPa Yield stress of steel bar fy = 275 MPa Mu = 400 kN-m As mm2

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