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1. Reinforced Rectangular Concrete Beam The reinforced concrete beam shown is subjected to a bending moment...
In the following reinforced concrete beam, bending moment is 150kip-ft and Ec = 3.75x10^6psi Es =...
In the following reinforced concrete beam, bending moment is
150kip-ft and Ec = 3.75x10^6psi Es = 30x10^6psi determine (a) the
stress in the steel (b) the madimum stress in the concrete
This is what I've done so far. I think the next step is to
calculate the distance of neutral axis from the bottom section
which should end up in a quadratic equation to solve for x.
Q4) In the following reinforced concrete beam, bending moment is 150kip-ft and E=3.75x10°Es=30x10ʻpsi...
326 СНАРТER 6 BENDING EXAMPLE 6.18 The reinforced concrete beam has the cross-sectional area shown in Fig. 6-39a. If it...
326 СНАРТER 6 BENDING EXAMPLE 6.18 The reinforced concrete beam has the cross-sectional area shown in Fig. 6-39a. If it is subjected to a bending moment of M = 60 kip ft determine the normal stress in each of the steel reinforcing rods and the maximum normal stress in the concrete. Take Est = 29(10) ksi and Econc = 3.6(103) ksi SOLUTION Since the beam is made of concrete, in the following analysis we will neglect its strength in supporting...
Problem 2 A reinforced concrete beam (see fig.) is acted on by a positive bending moment...
Problem 2 A reinforced concrete beam (see fig.) is acted on by a positive bending moment of M - 160 kNm. Steel reinforcement consists of 4 bars of 28-mm diameter. The modulus of elasticity for the concrete is E = 25 GPa while that of the steel is E, = 200 GPa. (a) Find the maximum stresses in steel and concrete. (b) If allowable stresses for concrete and steel are = 9.2 MPa and 0 -135 MPa, respectively, what is...
Problem 2. A concrete beam is reinforced by three steel rebars placed as shown. The modulus...
Problem 2. A concrete beam is reinforced by three steel rebars placed as shown. The modulus of elasticity is 3x106 psi for concrete and 29x106 psi for steel. Find the tensile stress in rebars and maximum compressive stress in concrete under an external bending moment of (a) 80 kip.in and (b) 240 kip.in. Given the compressive strength of concrete fe' = 3 ksi and yield stress of rebars fy = 60 ksi, discuss the state of crack in concrete and...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength of fc 30 MPa, reinforced with 5-25 mm diameter steel bar at the effective depth of 500 mm. If is subjected to a moment, M 130 kN-m. Determine the following: Magnitude of the bending moment that cracks the singly-reinforced beam section. (10 pts) b. For the computed cracking moment, determine the maximum compressive stress in the concrete and the stress in the tension steel....
What is the ultimate moment capacity (Mu) of a reinforced concrete beam with b = 20",...
What is the ultimate moment capacity (Mu) of a reinforced concrete beam with b = 20", d = 46", 4-#8 bottom bars, f'c = 4000 psi, fy = 60,000 Psi? Assume depth of stress block a = 9.2" 588.7 ft-kip 603.1 ft-kip 670.1 ft-kip 704.8 ft-kip
03(a) A reinforced concrete beam is acted on by a positive bending moment. reinforcement consists of 4 bars of 28 mm diameter. The modulus of elasticity is E 25 GPa for the concrete and E-200 G...
03(a) A reinforced concrete beam is acted on by a positive bending moment. reinforcement consists of 4 bars of 28 mm diameter. The modulus of elasticity is E 25 GPa for the concrete and E-200 GPa for the steel. The allowable stresses for the concrete and steel are ơ.-9.2 MPa and ơ.-135 MPa, respectively. Determine the maximum permissible positive bending moment. (10 marks) 625 mm 4 bars 28 mm -300 mm Figure Q3(a) 03(b) A simply supported beam that is...
Reinforced concrete Problem #1 (40 points): A beam with x-section shown in the figure is made...
Reinforced concrete
Problem #1 (40 points): A beam with x-section shown in the figure is made out of concrete with compressive strength fc = 4000 psi and the steel reinfrocemnt is of Grade 60 (fy 60000psi). Determine 1 The maximum compressive stress in the concrete f and the tensils stress in the steel , if the section is subjected to a bending moment of 130 ft-k (assume n 8) N.A._ 23" 23-х 4 #10 (5.06 in. 3" 18"
A 4-ft concrete post is reinforced with four steel Ex-29 x 106 psi and Ec- 3.6...
A 4-ft concrete post is reinforced with four steel Ex-29 x 106 psi and Ec- 3.6 x 106 psi determine the normal sterss in the steel and in the concentrete when a 150-kip axial cential force P is applied to the post bars, each with a in diameter Knowing that 4 ft s in in. Fig.P2.35
The concrete post (Ec 3.6 x 10 psi and ac 5.5 x 10/F) is reinforced with...
The concrete post (Ec 3.6 x 10 psi and ac 5.5 x 10/F) is reinforced with six steel bars, each of-in. diameter (Es= 29 x 10 psi and as 6.5 x 10/F). Determine the normal stresses induced in the steel and in the concrete by a temperature rise of 60°F. 6 ft 10 in 10 in The normal stress in the steel is ksi. psi The normal stress in the concrete is
In the following reinforced concrete beam, bending moment is
150kip-ft and Ec = 3.75x10^6psi Es = 30x10^6psi determine (a) the
stress in the steel (b) the madimum stress in the concrete
This is what I've done so far. I think the next step is to
calculate the distance of neutral axis from the bottom section
which should end up in a quadratic equation to solve for x.
Q4) In the following reinforced concrete beam, bending moment is 150kip-ft and E=3.75x10°Es=30x10ʻpsi...
326 СНАРТER 6 BENDING EXAMPLE 6.18 The reinforced concrete beam has the cross-sectional area shown in Fig. 6-39a. If it is subjected to a bending moment of M = 60 kip ft determine the normal stress in each of the steel reinforcing rods and the maximum normal stress in the concrete. Take Est = 29(10) ksi and Econc = 3.6(103) ksi SOLUTION Since the beam is made of concrete, in the following analysis we will neglect its strength in supporting...
Problem 2 A reinforced concrete beam (see fig.) is acted on by a positive bending moment of M - 160 kNm. Steel reinforcement consists of 4 bars of 28-mm diameter. The modulus of elasticity for the concrete is E = 25 GPa while that of the steel is E, = 200 GPa. (a) Find the maximum stresses in steel and concrete. (b) If allowable stresses for concrete and steel are = 9.2 MPa and 0 -135 MPa, respectively, what is...
Problem 2. A concrete beam is reinforced by three steel rebars placed as shown. The modulus of elasticity is 3x106 psi for concrete and 29x106 psi for steel. Find the tensile stress in rebars and maximum compressive stress in concrete under an external bending moment of (a) 80 kip.in and (b) 240 kip.in. Given the compressive strength of concrete fe' = 3 ksi and yield stress of rebars fy = 60 ksi, discuss the state of crack in concrete and...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength of fc 30 MPa, reinforced with 5-25 mm diameter steel bar at the effective depth of 500 mm. If is subjected to a moment, M 130 kN-m. Determine the following: Magnitude of the bending moment that cracks the singly-reinforced beam section. (10 pts) b. For the computed cracking moment, determine the maximum compressive stress in the concrete and the stress in the tension steel....
What is the ultimate moment capacity (Mu) of a reinforced concrete beam with b = 20", d = 46", 4-#8 bottom bars, f'c = 4000 psi, fy = 60,000 Psi? Assume depth of stress block a = 9.2" 588.7 ft-kip 603.1 ft-kip 670.1 ft-kip 704.8 ft-kip
03(a) A reinforced concrete beam is acted on by a positive bending moment. reinforcement consists of 4 bars of 28 mm diameter. The modulus of elasticity is E 25 GPa for the concrete and E-200 GPa for the steel. The allowable stresses for the concrete and steel are ơ.-9.2 MPa and ơ.-135 MPa, respectively. Determine the maximum permissible positive bending moment. (10 marks) 625 mm 4 bars 28 mm -300 mm Figure Q3(a) 03(b) A simply supported beam that is...
Reinforced concrete
Problem #1 (40 points): A beam with x-section shown in the figure is made out of concrete with compressive strength fc = 4000 psi and the steel reinfrocemnt is of Grade 60 (fy 60000psi). Determine 1 The maximum compressive stress in the concrete f and the tensils stress in the steel , if the section is subjected to a bending moment of 130 ft-k (assume n 8) N.A._ 23" 23-х 4 #10 (5.06 in. 3" 18"
A 4-ft concrete post is reinforced with four steel Ex-29 x 106 psi and Ec- 3.6 x 106 psi determine the normal sterss in the steel and in the concentrete when a 150-kip axial cential force P is applied to the post bars, each with a in diameter Knowing that 4 ft s in in. Fig.P2.35
The concrete post (Ec 3.6 x 10 psi and ac 5.5 x 10/F) is reinforced with six steel bars, each of-in. diameter (Es= 29 x 10 psi and as 6.5 x 10/F). Determine the normal stresses induced in the steel and in the concrete by a temperature rise of 60°F. 6 ft 10 in 10 in The normal stress in the steel is ksi. psi The normal stress in the concrete is
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