Mat Footing Reinforcement Details

If surface levelling is not used then it is required to specify a cover of 75mm to cover uneven surface of excavation.

Mat footing reinforcement details.

The mat foundation which is sometimes known as a raft foundation is a combined footing that could cover the whole area under a structure supporting several walls and columns. 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. Good video quantity dekhne ke liye during watching video top right side. According to is 456 200 the minimum thickness to main reinforcement in footing should not be less than 50mm if footing is in contact with earth surface directly and 40mm for external exposed face such as surface levelling pcc.

For practical zoning layout refer to zone editing. Depending on the total load applied to the mat and underlying foundation system the thickness of mat foundations can vary from 1 ft 0 3 m to more than 20 ft 7 m. It is a continuous thick concrete slab on the soil that extends the entire footprint of the building and increases the soil bearing capacity power. Mat foundation is also known as the raft foundation.

The bearing capacity increased by combining all individual footings in to one mat since bearing capacity is proportional to width and depth of foundations. Quick learn and watch till end for civil site engineering purpose knowledge note. Zones created by the program are based on real time stresses subjected on mat. It is used where the supporting soil has low bearing capacity.

The reinforcing system in the mat can be quite substantial with heavy reinforcing bar mats in the bottom top or both locations within the mat depth. Reinforcement detail for each zone is displayed at top left corner of geometry view. Mat foundations are sometimes preferred for soils that have low load bearing capacities but that is going to need to support high wall or column loads. A colored dot in the center of each mesh element indicates the reinforcing zone to which that element belongs.