Reinforced Concrete Mat Foundation Design

After the pcc reinforcement steel bars are tied cage in place and then the desired thickness of the concrete according to the design is poured.

Reinforced concrete mat foundation design.

Seismic design philosophy for ductile precast concrete frames is discussed. The method is generally applicable where columns are more or less equally spaced. Basic design criteria concentrically loaded d 2 all sides c critical section for two way shear b critical section for one way shear a critical section for flexure outside face of concrete column or. For analysis the mat is divided into mutually perpendicular strips.

It can model analyze and design any combination of two way mat raft slabs individual footings pile caps or grade beams. Adapt mat is a versatile three dimensional 3d finite element fem analysis and design software for any configuration of conventionally reinforced or post tensioned foundation system. 4 3 approximate plate analysis. The slab is idealized as a mesh of rectangular plate finite elements with four nodes at the corners and three degrees of freedom dz rx and ry per node.

A waterproof membrane sheet is placed over the ground surface and then 4 pcc is poured to create a level base for the mat raft foundation. A guide for practicing engineers published august 15 2012 author s ron klemencic ian mcfarlane neil hawkins. 7 seismic design of reinforced concrete mat foundations. Seismic design of reinforced concrete mat foundations has advanced significantly in the last twenty years.

A mat foundation is a thick reinforced concrete slab supporting arrangements of columns or walls in a row or rows and transmitting the loads to the soil. Where the differential settlement between columns will be small design the mat as reinforced concrete flat slab assuming planar soil pressure distribution. A discussion is presented. Spmats program uses the finite element method for the structural modeling and analysis of reinforced concrete slab systems or mat foundations subject to static loading conditions.

Nehrp seismic design technical brief no. It is used to support storage tanks industrial equipment silos chimneys and various tower structures.