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

Factors that affect design facility of screw pumps, Question While sele...

Question While select screw pumps in polder scheme projects , what are factors that affect design facility of screw pumps? Answer Commonly used angles of inclination

M.o.c, lime saturation factor meaning with simple english

lime saturation factor meaning with simple english

Test leakage of constructed gravity pipelines, Question Have air test o...

Question Have air test or water tests be selected to test leakage of constructed gravity pipelines ? Answer For gravity pipes, air tests are carried out after completi

Mild steel and high yield steel in water-retaining structure, Q. Mild steel...

Q. Mild steel and high yield steel in water-retaining structure? In designing water-retaining structures, movement joints may be installed in parallel with steel reinforcement

Do you mean by accelerated aging, Q. Do you mean by Accelerated Aging? ...

Q. Do you mean by Accelerated Aging? Accelerated ageing tests are conducted at elevated temperature of 100 o C to know the variation in hardness, UTS and elongation at break.

Sight distance - geometric design of roads, Sight Distance: Sight dis...

Sight Distance: Sight distance is the distance along a road at which a driver has a visibility of objects and can safely stop his vehicle or overtake another vehicle. Sto

Calculate time taken for consolidation in actual layer, A clay layer 5 m th...

A clay layer 5 m thick has double drainage. It was consolidated under a load of 127.5 kN/m2. The load is enhanced to 197.5 kN/m 2 . The coefficient of volume compressibility is 5.7

Rolling - binder, Rolling - Binder: The layer thickness is 40-50 mm. R...

Rolling - Binder: The layer thickness is 40-50 mm. Rolling is done in three stages : Initial Rolling By 80-100 kN smooth wheeled roller. Intermediate Rolling B

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