Mat Foundation Design Example Pdf

Force on a pile eq on unloaded pile.

Mat foundation design example pdf.

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. Foundation foundation design 27 mat. 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.

45 x95 x7 0 with top of mat 3 6 below grade. If a single square footing need to be designed under the maximum axial load that is occurred in columns type 4. This foundation will be used for a loose sand soil. Instructional materials complementing fema p 751 design examples.

Example 8 3 4 see example 8 3 4 in textbook page 363. Example 5 1 completes the analysis and design of shallow foundations for two of the alternative framing arrangements considered for the building featured in example 6 2. The properties used in the analysis and the design of this raft foundation are shown in table 4. Example 5 2 illustrates the analysis and design of deep foundations for a building similar to the one highlighted in chapter 7 of this volume of design examples.

The bearing capacity increased by combining all individual footings in to one mat since bearing capacity is proportional to width and depth of foundations. Instructional materials complementing fema p 751 design examples foundation design 3. Load path and transfer of seismic forces. It is used where the supporting soil has low bearing capacity.