Mat Foundation Design Pdf

If the net allowable soil pressure is known.

Mat foundation design pdf.

45 x95 x7 0 with top of mat 3 6 below grade. In such a case two or more columns can be supported on a single rectangular foundation as shown in figure 5 1b. 10 2 types of mat foundations figure 10 1 illustrates several possible mat foundation configurations. Finite difference and finite element methods can also be used but this section covers only the basic concepts of the first design method.

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. 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. The structural design of mat foundations can be carried out by two conventional methods. Instructional materials complementing fema p 751 design examples bearing pressure solution plastic solution is satisfactory.

Elastic is not. Foundation design 28 a plastic solution b elastic solution. Design will require extension of the column foundation beyond the property line. This type of foundation tends to be heavily overde signed for three major reasons.

Mat foundations topics. Foundation foundation design 27 mat. The conventional rigid method and the approximate flexible method. Mat or raft foundation is a large concrete slab supporting several columns in two or more rows.