In some instances with significant hydrostatic pressure or to accommodate building loadings a matt foundation slab is used in lieu of the mud slab.
Mud slab vs mat slab.
In such design basement walls act as ribs or deep beam.
It is circular square or rectangular slab of uniform thickness.
To support this engineers designed a 4 foot thick reinforced mat slab.
In this mat pedestals are provided at the base of the columns.
The waterproofing is then applied directly to the mat foundation slab and protected with protection board.
The construction of mat foundation.
Concentrated loads are usually more evenly distributed through the thickness of a mat than a slab due to a mats higher stiffness and rigidity.
Another name for this slab is a rat slab based on its obvious reference normally.
The total dead weight that will rest on this slab will be over 12 million pounds.
In this case a wearing floor slab is poured on top of the protected waterproofing system.
Because of the complexity of the mat geometry and loadings corn products asked ambitech engineering corporation of downers grove ill to verify the design using pcamats and staad software.
Sometimes it is stepped to spread the load over a larger area.
The main difference will probably be in the reinforcement.
The building then rests on this foundation leading to lesser contact with the land and hence more strength and stability.
Also depending on the size mats could be considered mass concrete.
The columns are placed on the intersection of beams.
Fig 4 shows a typical rigid frame mat.
A mud slab refers to a minimum thickness slab of concrete that normally does not have any reinforcement.
In this type of mat foundation beams are placed in perpendicular directions and all the beams are connected by rcc slab.
When the depth of beam exceeds 90 cm in simple beam and slab mat a rigid frame mat is referred.
The mat foundation is also reinforced with many bars inside it which run perpendicular to each other.
Slab on grade is supposed to carry its own weight and the live load.
When footing is provided to support an individual column it is called isolated footing.
Mat foundation is constructed as a large slab which works as the base for the building.
Rigid frame mat this type of mat is used when columns carry extremely heavy loads.
Two way slab and beam raft foundation is suitable when the columns are carrying unequal loads and the spacing is large between them.
This concrete slab is meant to cover the dirt of a basement or basically clean up the surface of a floor in an area that will not obtain much use.