Purpose of setting minimum amount of longitudinal steel area, Civil Engineering

Assignment Help:

Q. Purpose of setting minimum amount of longitudinal steel areas for columns?

In some design codes it specifies that area of longitudinal steel reinforcement must be not less than a specific percentage of sectional area of column. Initially the limitation of steel ratio for columns helps to guard against potential failure in tension. Tension can be induced in columns during design life of concrete structures. For example tension is induced in columns in case there is uneven settlement of building foundation or upper floors above the column are completely unloaded whereas the floors below column are strictly loaded. Secondly because of the effect of creep and shrinkage, there would be a redistribution of loads between steel and concrete reinforcement. So steel reinforcement can yield easily in case a lower limit of steel area isn't established.

Additionally, test results indicated that columns with too low a steel ratio will render the equation below inapplicable that is used for design of columns:

N=0.67fcuAc+fyAs


Related Discussions:- Purpose of setting minimum amount of longitudinal steel area

Explain the limitations of rebound hammer, Explain the Limitations of Rebou...

Explain the Limitations of Rebound Hammer? The following characteristics of concrete can affect the correlation of the rebound number with the actual surface hardness and shoul

Aggregate crushing test, Aggregate Crushing Test: In which the layer o...

Aggregate Crushing Test: In which the layer of aggregates in a cylindrical measure is subjected to a compressive load of 40 T, and the per cent fines generated are determined,

Define the vapor pressure, Define the Vapor Pressure The partial pressu...

Define the Vapor Pressure The partial pressure exerted at the surface of a liquid at the liquid/vapor interface. The liquid molecules are released into the vapor phase when the

TicketID: EM135335A06, I only want Part 1 of this order, can you adjust the...

I only want Part 1 of this order, can you adjust the quote?

Advantages of bonded post-tensioning systems, Advantages of bonded post-ten...

Advantages of bonded post-tensioning systems Some advantages of bonded post-tensioning systems over unbonded post-tensioning ones are the following : (a) Large reduction in

Maintenance of airport pavements, Maintenance of Airport Pavements: ...

Maintenance of Airport Pavements: Maintenance Elements The maintenance of airport pavements is an important task of a civil engineer, since the safe movement of aircr

State the effect of the induction of the pre-stresses, State the effect of...

State the effect of the induction of  the pre-stresses The net effect of the induction of  the pre-stresses shall be to decrease the tensile stresses (produced due to the exte

What are rules for working of dip lorries, Q. What are rules for working of...

Q. What are rules for working of Dip lorries and their protection arrangements on a single line section explain with sketches? Ans.-Rules for working of Dip lorries - i. Sub

Pavement layers, What role does modulus of elasticity play in the pavement ...

What role does modulus of elasticity play in the pavement layer arrangement

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