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

Velocity and pressure, why the pressure will reduce when the velocity incre...

why the pressure will reduce when the velocity increases

English, what is law of gearing

what is law of gearing

Calculation for stress-strain carves, Calculation for Stress-strain carves:...

Calculation for Stress-strain carves:   After reaching point D, if bar is strained further, a local reduction in cross section occurs in gauge length (that is, formati

Hardenability of steel, The hardened layer depth is the measure of harden-a...

The hardened layer depth is the measure of harden-ability. A good harden-ability will sense even thicker sections are uniformly hardened. Conversely a poor harden-ability will gene

Fluid mechanics, a petrol tanker uses gravity to empty its 35kl tank in to ...

a petrol tanker uses gravity to empty its 35kl tank in to an underground storage tabk. the hose that is used has a roughness equivalent to galvanised iron, has an internal diameter

Design of the microprocessor control system, 1 Prepare a suitable system Me...

1 Prepare a suitable system Memory Map over the first 3K of memory, a suitable PIO configuration and associated Z80 PIO initialisation words in order to support a single electro-hy

How can we use of shrinkage allowance, Q. How can we use of Shrinkage allow...

Q. How can we use of Shrinkage allowance? Since metal shrinks on solidification and contracts further on cooling to room temperature, linear dimensions of the pattern is increa

Induction heating, Induction Heating: Alternating current throughout i...

Induction Heating: Alternating current throughout induction coil adjacent the part to be treated induces eddy current via the part that is so heated. The benefit of such heati

Arc welding power sources-arc characteristics, ARC CHARACTERISTICS In ...

ARC CHARACTERISTICS In order to understand the different output characteristics that are required by the welding power source it is necessary to understand the load which is f

What is the tessellated modellers, Tessellated Modellers    Solid Model...

Tessellated Modellers    Solid Modeling This describes a class of simplified boundary-representation modellers which approximate to curved faces by a number of plane faces. Sin

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