Deflection in concrete structures, Civil Engineering

Assignment Help:

Tension reinforcement leads to increasing deflection in concrete structures?

In BS8110 a modification factor is applied to span/depth ratio to take into account effect of tension reinforcement. Actually deflection of concrete structure is affected by stress and amount of tension reinforcement. To understand their relationship let us consider the subsequent equation relating to beam curvature:

Curvature = 1/r = e/ (d-x)

Where r = radius of curvature

  e = tensile strain in tension reinforcement

  d = effective depth

  x = depth of neutral axis

Provided that tensile strain in tension reinforcement remains constant, curvature of concrete structure increases with depth of neutral axis. It is perceived that depth of neutral axis rises with tension steel ratio. Consequently curvature of concrete section is directly proportional to the tension steel ratio. Additionally, largervalue of the depth of neutral axis enhances increased area of concrete compression so that effect of creep on deflection appears to become significant.


Related Discussions:- Deflection in concrete structures

Explain the coefficient of permeability, A sand deposit of 12 m thick overl...

A sand deposit of 12 m thick overlies a clay layer. The water table is 3 m below the ground surface. In a field permeability pump-out test, the water is pumped out at a rate of 540

Usage of double air valves and single air valves, Question In designig ...

Question In designig of watermains, how to decide usage of double air valves and single air valves ? Answer Single air control device let squeezing air out of p

Seismic joints, is the seismic joints like falling joints ? thanks :)

is the seismic joints like falling joints ? thanks :)

Statics - rigid body of equilibrium, The ball of a trailer hitch is subject...

The ball of a trailer hitch is subjected to a force F. If the failure occurs when the moment of point F around point A reaches 11250 in lbs, determine the largest value F may have

Explain basic need of design of shock transmission unit, Explain the Basic ...

Explain the Basic requirement of Design of shock transmission unit? The STU must withstand the specified design load. The stroke of the piston must be bigger than the movement

Purification and treatment of water, Purification and Treatment of Water: ...

Purification and Treatment of Water: In purification and treatment of water, we have discussed the important treatment process which is commonly used in making raw water from

Designing water storage tank, Question While designing water storage t...

Question While designing water storage tank , has movement joints be installed? Answer While designing water storage tanks , group joints can be set up in similar w

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd