What is raft foundation, Mechanical Engineering

Assignment Help:

What is raft foundation?

A raft or mat can be considered as a combined footing which covers the entire building area and supports all columns and walls. Such a foundation may consist of a slab of uniform thickness or a slab stiffened by beams either above or below the slab as demonstrated in figure as:

1956_RAFT FOUNDATION.png

RAFT FOUNDATION

When the allowable soil pressure is low or the building loads are heavy, the use of individual spread footings would cover a major portion of the plan area. When the total area of the footings covers more than fifty percent of the area, it is more economical to use a raft for the entire structure.


Related Discussions:- What is raft foundation

What is one way shear, What is one way shear? Explain with a suitable demon...

What is one way shear? Explain with a suitable demonstration. One Way Shear This worked out seen a similar case is the case of wall footings. For square footings also the cr

Motion of this particle, Motion of this particle: A particle of mass m...

Motion of this particle: A particle of mass m is resting on a smooth horizontal plane as illustrated in Figure (a). It is associated to a spring which has a constant of k in f

Explain the disadvantages of automation, Explain the Disadvantages of Autom...

Explain the Disadvantages of Automation? a) Initial cost is higher providing additional features in machine tools. b) Skilled personnel's are required for maintenance of aut

Age-hardening of aluminium alloys, Age-hardening of Aluminium Alloys I...

Age-hardening of Aluminium Alloys In specific alloys precipitation from a single phase may arise. The precipitate phase might be in form of determine sub-microscopic particles

Environments can cause deterioration of foundation, Environments can cause ...

Environments can cause deterioration of foundation. Can you explain this in the following cases? a) A column footing which was stable for a number of years suddenly gave way. T

Clutch cable model- gear complaints, Clutch cable model: Ensure the cables...

Clutch cable model: Ensure the cables fitted is of the respective model and not interchanged with other model. Also ensure that the cable is genuine.

Pure torsion, Pure Torsion: What do you mean by pure Torsion?       ...

Pure Torsion: What do you mean by pure Torsion?                                                                                                       In general two typ

Matlab program of location a point with respect a line, matlab program of l...

matlab program of location a point with respect a line

Metallurgical defects-gas porosity, Gas Porosity Porosity is the...

Gas Porosity Porosity is the presence of gas pockets or voids caused by the entrapment of gas evolved during weld metal solidification. This Porosity is caused due to im

Thermodynamics, describe equivalence of kelvin planck and clausious stateme...

describe equivalence of kelvin planck and clausious statement

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