Mat Foundation Design Example Ppt

This also covers how to check ultimate moment resistance design reinforcement plac.

Mat foundation design example ppt.

Structural design of mat foundations 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. Deflected shape soil. Instructional materials complementing fema p 751 design examples foundation design 3.

Example 8 3 4 see example 8 3 4 in textbook page 363. Conventional rigid method approximate flexible method. Structural design of mat foundation free download as powerpoint presentation ppt pdf file pdf text file txt or view presentation slides online. 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.

Force on a pile eq on unloaded pile pile supporting structure. Mat foundation often considered to be used when dealing with the following conditions. This is tutorial no 7 of raft mat foundation design course in csi safe. Load path and transfer of seismic forces.

This approach is generally referred to as the compensated foundation design and is extremely useful when structures are to be built on very soft clays. This foundation will be used for a loose sand soil. Finite difference and finite element methods can also be used but this section covers only the basic concepts of the first two design methods. Compensated foundation the net pressure increase in the soil under a mat foundation can be reduced by increasing the depth d f of the mat.

Hydrostatic uplift resistance is needed etc. The conventional rigid method and the approximate flexible method. The spread footings cover over 50 of the foundation area because of large column loads. Design of raft foundation page 13 3 3 0 why raft should be used.

6 mat raft foundation 7 types of mat foundations 8 to design mat foundation. Structural design of mat foundations the structural design of mat foundations can be carried out by two conventional methods. Unmoving soil eq motion. The properties used in the analysis and the design of this raft foundation are shown in table 4.