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 tertiary treatment for wastewater, Explain the Tertiary Treatme...

Explain the Tertiary Treatment for Wastewater Tertiary Treatment: in cases where secondary treatment is not adequate (particularly if the discharges are into a sensitive water

Define underwater inspection of steel or cast iron structure, Define Underw...

Define Underwater Inspection of steel or cast iron structures? Underwater Inspection of steel/cast iron structures may be carried out as under: i. Start the inspection at sp

Explain the bearing capacity failure, A continuous wall footing, 1 m wide,...

A continuous wall footing, 1 m wide, rests on sand, the water table lying at a great depth. The corrected N-value for the sand is 10. Verify the load which the footing can support

Laplace transform, Using Laplace transfom, the following differential equat...

Using Laplace transfom, the following differential equation d y dy dt reduces to the algebraic equation of the form Resolve y(s) into partial fractions

Amount of borrow needed to bring area to elevation of 90-ft, Surveyed eleva...

Surveyed elevations are shown in Figure for a 50' x 50' grid at a proposed parking lot location. The amount of borrow needed to bring the area to an elevation of 90-ft is most near

Advantages of using top-down approach, Question What are major advantag...

Question What are major advantages of using top-down approach in basement construction? Answer The main advantages of top-down approach are listed below- (i) Stru

Cargo handling facilities, Cargo Handling Facilities: All water transp...

Cargo Handling Facilities: All water transport terminals require cargo handling facilities. Cranes of various sizes are used. In docks, traveling cranes are popular (Figure).

Precast concrete jacking pipes, Question While precast concrete jackin...

Question While precast concrete jacking pipes , from time to time grout holes are calculated inside these precast pipes. Give specific and key reasons? Answer Grout h

Prime coat - road pavements, Prime Coat: A prime coat is the applicat...

Prime Coat: A prime coat is the application of a low viscosity binder, usually a bituminous emulsion, to a gravel, WBM or WMM surface, to enable the binder to fill up the voi

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