Mat Footing Ppt

However under certain circumstances it may be desirable to construct a footing that supports a line of two or more columns.

Mat footing ppt.

Building analysis on staad with different soil conditions analytical study. R a f t f o u n d a t i o n s 12 design of combined footings and mats aci committee 336 the following factors should be considered while examining any problem. Group 7 group members umar khatab 2013 bt civil 36 abid javaid 2013 bt civil 09 2. Commonly used as foundation for silos chimneys large machinery.

Footing the lowest load bearing part of a building typically below ground level is called footing types of footing there are three main types of foundation strip footing raft mat footing isolated pad footing. 1 soil type immediately below the footing 2 soil type at the greater depth 3 size of footing 4 shape of footing 5 eccentricity of loading 6 rigidity of footing 7 rigidity of the super structure 8 modulus of sub grade. Raft mat foundation is used in those places where we have less bearing capacity of the soil. Mat raft footing combined footing details of steel in construction footing foundation building construction lightning and construction ppt on design of.

Footing and its types 1. It is common to use mat foundation or deep basements to transfer the column loads to the underlying soil as well as provide floor slab for the basement. Geo technical engineering powerpoint presentations tags civil engineering seminar civil ppt foundation analysis mat footing mtech seminars raft foundation seminar topic. At those places we use mat foundations to distributes the whole loads of the structure to the soil when the area of the footing was increase than the soil load bearing capacity will also increase because this foundation reduces the stress on the soil at the same place.

It is used where the supporting soil has low bearing capacity. A mat foundation is used when the subsoil is weak and column loads are so heavy that the conventional spread footings cover more than 50 of the building area. The powerpoint ppt presentation. Design of mat foundations is the property of its rightful owner.

Usually large concrete slab supporting many columns. Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. Definition footings are structural members used to support columns and walls and to transmit and distribute their loads to the soil in such a way that the load bearing capacity of the soil is not exceeded excessive settlement differential settlement or rotation are prevented and adequate safety against overturning or sliding is maintained. Mat foundations introduction under normal conditions square and rectangular footings are economical for supporting columns and walls.