Conventional method of raft foundation design2 soil line method elastic method of raft foundation design design of raft foundations methods and calculations according to is 2950 1965 the design criteria of raft footings are given below.
Mat foundation design calculation.
The conventional rigid method and the approximate flexible method.
It is used where the supporting soil has low bearing capacity.
Mat foundation design spreadsheet.
The structural design of mat foundations can be carried out by two conventional methods.
The civilweb mat foundation design spreadsheet is a powerful and easy to use design spreadsheet which can be used to design mat foundations.
Mat or raft foundation is a large concrete slab supporting several columns in two or more rows.
The designer can analyse a mat foundation of any size including up to 32 columns placed anywhere on the foundation.
The columns can be subjected to axial horizontal and moment forces.
Contents design of raft foundations methods and calculations1.
The spreadsheet includes all the tools required to complete a mat foundation design in accordance with bs en 1997 and bs en 1992.
The bearing capacity increased by combining all individual footings in to one mat since bearing capacity is proportional to width and depth of foundations.
Spreadsheets are hard.
Finite difference and finite element methods can also be used but this section covers only the basic concepts of the first design method.
This spreadsheet can be used to complete the design of mat foundations.