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

Concrete surface finish - limitations of ultrasonic system, Define Concrete...

Define Concrete Surface Finish - Limitations of Ultrasonic System? The smoothness of the surface under test is important to ensure proper acoustical contact between the transdu

Determine the dimension of the vertical side walls, Determine the dimension...

Determine the dimension of the vertical side walls for a rectangular open channel designed to convey 150 cfs of storm water runoff. The runoff is collected in the parking lots and

Solid mensuration, Ask question #MiniThe base of an isosceles triangle and ...

Ask question #MiniThe base of an isosceles triangle and the altitude drawn from one of the congruent sides are equal to 18cm and 15cm, respectively. Find the lengths of the sides o

Meaning, i want the meaning of crete

i want the meaning of crete

Curved beams, Sir how can we find location of neutral axis for a curved bea...

Sir how can we find location of neutral axis for a curved beam of circular cross section,,,

What are service reservoirs, Q. What are Service reservoirs? Service re...

Q. What are Service reservoirs? Service reservoirs, other than normal reservoirs are provided due to the subsequent reasons:  (i)  In case of breakdown of pumping stations a

Determine the amount of excavated material, The footprint of a proposed off...

The footprint of a proposed office building is overlaid on the existing contours topographic map of a sloping site as shown in the figure. The structural bays which are 65-ft by 65

Monitoring state of reclamation, Question Geotechnical Instrumentation ...

Question Geotechnical Instrumentation is often employed for monitoring state of reclamation . From time to time two piezometers are installed inside same borehole. What is mai

Preparation for underwater inspection - tool and equipment, Preparation for...

Preparation for Underwater Inspection - Availability of Tools and Equipment The engineer-in-charge, before taking up the inspection, should list out the complete equipment req

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