Mat Foundation Procedure

Diagram bmd for this strip and the procedure is repeated in the x and y directions for all strips.

Mat foundation procedure.

A mat foundation spreads out under the footprint of the building and declines the contact pressure compared to conventional strip or trench footing. The raft foundation is a very commonly used type of foundation system. Raft foundation is also known as mat foundation. Aliur rahman shuvo 1316027 bangladesh university of engineering and technology 3.

Basma the following values for x and y along with the sign conventions are used to estimate q u a p p l i e d. It is a suitable solution for low bearing capacity soil spread footing cover about 70 of the structure high structure loads soft pockets or cavities of in the soil to unknown extent raft and. This approach is generally referred. A raft foundation may be rectangular fig.

Md alifnur salim 1316016 4. Check punching shear and determine the required area. It is used where the supporting soil has low bearing capacity. Definition of raft foundation along with working principle when to choose raft types of raft foundation materials of raft foundation raft construction steps etc are discussed below.

The following procedures should help to achieve this and an educated client will recognize the importance of funding this work with a realistic fee. The bearing capacity increased by combining all individual footings in to one mat since bearing capacity is proportional to width and depth of foundations. Commonly used type of raft is the solid slab raft without downstand beam. To begin constructing the solid slab raft foundation the vegetative top soil original soil is removed then the soil left behind is compressed.

A raft or mat foundation is a sizable concrete slab or slab and beam system which supports all the loads of superstructure through walls or columns in two or more rows and rests on soil layer or rock. Sohanur rahman prince 1316006 2. A mat foundation also may be used to resist hydrostatic pressures or to bridge over small soft spots in the soil provided the mat is adequately reinforced. Md razu alam raz 1316022 5.

When mat foundation is supported by columns rather than. The net pressure increase in the soil under a mat foundation can be reduced by increasing the depth d f of the mat. Foundation engineering 2 design of mat raft footings dr. Good design must not only be safe but must aim to save construction costs time and materials.

Design procedures for a building foundation step by step design procedure of foundation.