Question

In a reinforced concrete beam , The value of internal stresses at neutral axis is :...

In a reinforced concrete beam , The value of internal stresses at neutral axis is : Select one : a . B1 * 0.85 * f'c b . E * e c . ZERO d . 0.85 f'c
Engineering   Civil-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Summary

OPTION - C

STRESS AT NEUTRAL AXIS IS ZERO.

ABOVE NEUTRAL AXIS THE BEAM IS IN COMPRESSION AND BELOW NEUTRAL AXIS IS IN TENSION FOR VERTICALLY APPLIED GRAVITY LOADS

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Knowing that the reinforced concrete beam cross section effective depth is d = 310 mm and...
Knowing that the reinforced concrete beam cross section effective depth is d = 310 mm and the properties of materials used are f'c = 28 MPa and fy = 420MPa and the external ultimate bending moment Mu = 254 KN.m with strain in tension steel reinforcement equal to 0.005 . The width of the beam is Select one : a . 511 b . 385 c . 460 mm d . 640
Given fy = 60000 psi f'c = 5000 psi in a singly reinforced concrete beam. a)...
Given fy = 60000 psi f'c = 5000 psi in a singly reinforced concrete beam. a) what is pbalanced? b) what is pmin for flexure?
A reinforced concrete beam is constructed with Grade 30 concrete which has a cross section of...
A reinforced concrete beam is constructed with Grade 30 concrete which has a cross section of 450 mm x 660 mm (b = 450 mm and D = 660 mm). The length of the beam is 5 m. The elastic modulus of the concrete is 32.8 GPa. A uniformly distributed live load of 23 kN/m is acting on the beam. Determine (a) the design bending moment on this beam for strength limit state, (b) modular ratio assuming Es = 200...
Problem 1 A simply supported reinforced concrete beam has a width (b) of 14 inches, and...
Problem 1 A simply supported reinforced concrete beam has a width (b) of 14 inches, and an effective depth (d) of 24 inches. It is reinforced with 3 # 8 bars. Assume 60-ksi steel and 3000-psi concrete. Determine the resisting moment (Mr) in ft-k that this beam can safely sustain.
Problem 3 A reinforced concrete beam is cantilevered over a span of 10 ft. The beam...
Problem 3 A reinforced concrete beam is cantilevered over a span of 10 ft. The beam width is 14”. The beam is supposed to carry a uniformly distributed service dead load of 1.2 k/ft and a uniformly distributed service live load of 0.5 k/ft over its entire span. The dead load includes an allowance for the beam weight. Assume 60- ksi steel and 4,000-psi concrete. 1.Use the design equations to determine the minimum required effective depth (d). 2.Select the tensile...
A simply supported reinforced-concrete beam has to resist a maximum factored moment of M* = 210...
A simply supported reinforced-concrete beam has to resist a maximum factored moment of M* = 210 KN-m. Given that f’c = 32 MPa, fy = 500 MPa and that the maximum possible width for the beam is 240 mm: a. Establish an appropriate structural depth ‘d’ for the beam b. Determine the total depth ‘D’ of the beam for a FRL of 90 minutes c. Find the area of steel Ast required to resist the moment and select the rebars....
Determine the cracking stress of concrete in a reinforced beam of rectangular section of breadth 250mm,...
Determine the cracking stress of concrete in a reinforced beam of rectangular section of breadth 250mm, gross depth 450mm, and effective cover to reinforcement 40mm. the beam contains 4N16 bars all arranged in one layer in tension face. Take the concrete is N32 grade.
. A rectangular beam of size 300 * 600 mm is reinforced with steel bars of...
. A rectangular beam of size 300 * 600 mm is reinforced with steel bars of area 1530 mm^2. Concrete of Grade C-25 and steel of Grade 420 is to be used. Depth of neutral axis (y-dash) is found to be 312 mm. Find the stress at the bottom of the section, if applied bending moment is 45 KN-m.
A simply supported reinforced concrete beam has a width (b) of 14 inches, and an effective...
A simply supported reinforced concrete beam has a width (b) of 14 inches, and an effective depth (d) of 24 inches. It is reinforced with 3 # 8 bars. Assume 60-ksi steel and 3000-psi concrete. Determine the resisting moment (Mr) in ft-k that this beam can safely sustain. Problem 2 The beam given in Problem 1 has a span of 21 ft. It is supposed to carry a uniformly distributed service dead load of 3.7 k/ft, in addition to its...
Derive the expression for ultimate moment of resistance for a singly reinforced beam by using the...
Derive the expression for ultimate moment of resistance for a singly reinforced beam by using the stress block parameter for compressive force C and tensile force T and locate the depth of neutral axis from the top of beam. Extracts of BS8110
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT