Whole base of mat, Civil Engineering

Assignment Help:

Question

In modeling a nonrigid mat foundation by using elastic springs, have a uniform modulus of subgrade reaction be used along whole base of mat?


Answer

A bed of springs to simulate flexible behaviour of mat subject to loads, care must be engaged in collection of modulus of subgrade reaction. In fact, modulus of subgrade reaction depends on factors like width of the mat, shape of the mat, depth of founding level of mat etc. In particular, modulus of subgrade reaction is smaller at center even as it is larger near mat's edges. If constant modulus of subgrade reaction is adopted throughout width of mat, then a more or less uniform settlement will effect while subject to a uniform load. Yet, actual behaviour is that settlement in the center is higher than that at side edges. So, it directs to an underestimation of bending moment by 18 to 25 percent.


In broad, a constant value of modulus of subgrade reaction is in general applied for arrangement with a rigid superstructure and rigid foundation. Yet, a variable modulus of subgrade reaction is adopted in its place for non-rigid superstructure and non-dominance of foundation rigidity to explanation for effect of force bulbs.

 

 


Related Discussions:- Whole base of mat

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

Illustrate shaft grouting for friction barrettes, Q. Illustrate Shaft grout...

Q. Illustrate Shaft grouting for friction barrettes? For the construction of friction barrettes, some grout pipes are designed at periphery of the barrettes. Within a short dur

Define categories of spalls -underwater inspection of bridge, Define catego...

Define categories of Spalls -underwater inspection of bridge? Spalls are classified as follows:  i. Small spalls - up to 25 mm deep or approximately 150 mm in diameter. i

Factors determining the stability of a single armour unit, Q. Factors deter...

Q. Factors determining the stability of a single armour unit There are mostly three major factors that govern the stability of an armour unit, viz gravity, intertangling and s

Define the pressure on a vertical plane, Define the Pressure on a vertical ...

Define the Pressure on a vertical plane Fluid pressure increases linearly with increasing depth. The average pressure on a vertical plane occurs at the average vertical depth.

What is gravity flow, Gravity flow is fluid flowing because of the forces o...

Gravity flow is fluid flowing because of the forces of gravity alone and not to an applied pressure head. In the Bernoulli equation, the pressure term is omitted, and the height an

ENGlLISH, Ask question #WHAT is presentation skill #

Ask question #WHAT is presentation skill #

Brick, what is fist class brick?

what is fist class brick?

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