Assuming the concrete is uncracked, compute the bending stresses in the extreme fibers of the beam of Figure 2.5 for a bending moment of 25 ft-k. The normal-weight concrete has an f of 4000 psi and a modulus of rupture f, =7.5(1.0)/4000 psi = 474 psi. Determine the cracking moment of the section. %3D %3D

Assuming the concrete is uncracked, compute the bending stresses in the extreme fibers of the beam of Figure 2.5 for a bending moment of 25 ft-k. The normal-weight concrete has an f of 4000 psi and a modulus of rupture f, =7.5(1.0)/4000 psi = 474 psi. Determine the cracking moment of the section. %3D %3D

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

See similar textbooks

Similar questions

NO 1 Please solve and answer correctly, give the complete solutions.
Determine the cracking moment (KN/M) and the compressive stress felt by concrete (MPa). Show your step by step answer with solution
Please help by showing ALL steps I am trying to see what I am doing incorrect on don't just want the answer
Please write legibly and have a step by step solution.
reinforced concrete design
2. Tensile strength of concrete is about: (20-35)% of compressive strength (45-70)% of compressive strength None of the above. Tension controlled section Balanced section Compression-controlled section 4- The reduction factor (0) is equal to 0.9 if the: Es 2 Ety + 0.003 Es S Ety + 0.003 Es Ety 5- The design method which use the factored loads is - Working stress method - Ultimate design Method - None of above 6- If p< Po therefore the section is - Under reinforced - Over reinforced - None of above
Please give me the correct solution and answer of this problem in principle of reinforced/prestressed concrete
Please answer letter g.
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
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.
Given the following properties of beam: b = 250 mm, d = 325 mm and h = 400 mm. a) Assuming the concrete is uncracked, compute the bending stresses (in MPa) in the extreme fibers of the beam at M = 100 kN-m. Blank 1 b) Determine the cracking moment (in kNm) for the section if f'c = 28 MPa. Blank 2 c) Compute the flexural stresses in the concrete and steel of the beam using the transformed-area method at M = 100 kN-m, n = 9 and reinforced with 5-16 mm diameter tension bars. Unit must be in MPa. fc = _Blank 3, fs =__________ Blank 4
Q: Abeam with rectangular cross-section of (300 x600).mm dimensions, reinforced with 4 bars of 20 mm. The concrete in compression Zone arrived the fracture (Ecu=0.003). The yielding stress of the rebar is 420 NImm?. f- 28 NImm?. Assume linear distribution for strains. %3D ナ Concrete couer is 40 mm. Find :- 1) The strain ia steel reinforcing bars. 2) The positionof neutral axis from the top of the beam (Cdistance). 3) Are reinforcement bars yield or not ? 4) The position of neutral axis from the top in case of balanced failure. 5) Is the beam under, over or balanced reinforcement ? 6) The compression force in cancrete. 7) The tensile force in steel reinforcing bars 8) Check the spacing between longitudiaal bars according to ACI requirements, with sketch.