Mat Foundation Design Pdf

The bearing capacity increased by combining all individual footings in to one mat since bearing capacity is proportional to width and depth of foundations.

Mat foundation design pdf.

10 2 types of mat foundations figure 10 1 illustrates several possible mat foundation configurations. Instructional materials complementing fema p 751 design examples bearing pressure solution plastic solution is satisfactory. Elastic is not. Mat foundations topics.

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. This type of foundation tends to be heavily overde signed for three major reasons. Foundation foundation design 27 mat. In such a case two or more columns can be supported on a single rectangular foundation as shown in figure 5 1b.

The conventional rigid method and the approximate flexible method. Design will require extension of the column foundation beyond the property line. The structural design of mat foundations can be carried out by two conventional methods. Although mat foundations are more difficult and more costly to design than individual spread footings they can be used effectively.

Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. It is used where the supporting soil has low bearing capacity. Probably the most common mat design consists of a flat concrete slab 0 75 to 2 m thick and with continuous two way reinforcing top and bottom. Foundation design 28 a plastic solution b elastic solution.