A rectangular pretensioned beam has concentric prestress force of 1000 KN. The beam is 300 x 500mm in dimension and M20 grade of concrete is used with creep coefficient of 1.6 and residualshrinkage strain of 3 x10-4. Ast = 500 sq.mm.Find the following:a. Loss due to elastic shortening use Est = 200 GPa and Ec = 5700(Fc)^1/2b. Loss due to creepc. Loss due to shrinkaged. Total loss of prestress A pretensioned member with a dimension of 250mm x 360mm is subject to an eccentric tendon thatis located 105mm from the soffit. Area of the prestressing steel to be 502 sq. mm and the modulus ofelasticity is 200 GPa. The Modulus of elasticity of concrete is 36.8 GPa. Creep coefficient = 1.6 andthe shrinkage strain = 3 x106. Assume a 5% steel relaxation. P= 1500 KN, length = 10 m, unit weightof the concrete = 23.56 KN/cum. Find the total prestressed loss in percentage.

Answered: Image /qna-images/answer/139f82ad-75e3-42f5-8eb7-c87a21b0f351.jpg

shrinkage strain of 3 x10-4. Ast = 500 sq.mm. Find the following: a. Loss due to elastic shortening use Est = 200 GPa and Ec = 5700(Fc)^1/2 b. Loss due to creep c. Loss due to shrinkage d Total loss of prostross

shrinkage strain of 3 x10-4. Ast = 500 sq.mm. Find the following: a. Loss due to elastic shortening use Est = 200 GPa and Ec = 5700(Fc)^1/2 b. Loss due to creep c. Loss due to shrinkage d Total loss of prostross

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

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
A pre-tensioned concrete member of section 200 mm x 250 mm contains tendons of area 500 mm2 at centre of gravity of the section. The prestress in the tendons is 1000 N/mm2. Assuming modular ratio as 10, the stress (N/mm2) in concrete is
The following data of a pre-stress concrete are given: Beam dimension ; bxh = 300 mm x 600 mm Loads Super imposed dead load 7 KN/m Live load = 20 KN/m Unit Weight of concrete 23 KN/cubic meter The beam is simply supported on a span of 15 meters and are pre tensioned with total initialpre tensioned with total initial force of 1750 KN from low-relaxation strand with centroid 220 mm below neutral axis throughout the beam length .There is a 15% loss of stress at service loads. The concrete covering of the pre-stressed concrete is _____mm., the total dead load is _____ KN/m.
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.
Give me right solution according to the question.. where Y = 146 X1 = 102.2 X3= 146 X= 551 X2= 363.66
A beam having a width of 500 mm and a total depth of 800mm is reinforced with 6-32mm dia bars. Compressive strength of concrete is 28 MPa and yield strength of reinforcing bars is 420MPA. 640 mm 800 mm 6 #32 C 80 mm 80 mm Determine the following: 1. depth of the compression block 2. strain in the tension reinforcement 3. moment reduction factor 4. nominal moment capacity 5. ultimate moment capacity 6. actual steel ratio 7. minimum steel ratio 8. maximum steel ratio 9. Tension force 10. Compression force
NO 1 Please solve and answer correctly, give the complete solutions.
SIT. B: Determine the tensile steel ratio of a given conditions if concrete strength f'. = 28 MPa and steel yield strength fy 4. if the tensile strain is Es = fy/Es upon crushing of concrete at a strain of 0.003. C. 0.02833 A. 0.01567 B. 0.02161 D. 0.02125 if the tensile strain is limited to 0.004 upon crushing of concrete at a strain of 0.003. A. 0.01567 B. 0.01548 5. 6. Minimum as required by NSCP 2015. C. 0.00313 D. 0.00405 A. 0.00333 B. 0.00276 = 420 MPa. C. 0.02778 D. 0.02064 uniformly
Answer it correctly!
Please write legibly and have a step by step solution.
A beam having a width of 500 mm and a total depth of 800mm is reinforced with 6-32mm dia bars, Compressive strength of concrete is 28 MPa and yield strength of reinforcing bars is 420MP.. 640 mm 800 mm 6 #32 80 mm 80 mm Determine the following: 1. depth of the compression block 2. strain in the tension reinforcement 3. moment reduction factor 4. nominal moment capacity 5. ultimate moment capacity 6. actual steel ratio 7. minimum steel ratio 8. maximum steel ratio 9. Tension force 10. Compression force
A rectangular reinforced concrete beam has a width of 350 mm and an effective depth of 650 mm. The beam is reinforced with 8-28 mm diameter tension bars. Concrete strength is f'c = 20.70 MPa and steel yield strength is fy = 275 MPa. 1. Which of the following most nearly gives the steel ratio? A. 3.73% B. 2.79% C. 2.17% D. 1.62% the rectangular