Definition of spread footing : a footing in building construction that is shallow in proportion to its width and is usually made of reinforced concrete.
What is spread footing design?
Spread footings are usually designed to use 3 ksi < f'c < 4 ksi, whereas modern structural members frequently use concrete between the range of 4 ksi < f'c < 8 ksi. A higher concrete strength helps reduction the member's size. However, the footing's design is govern by the bearing capacity and settlement.
How do you make a footing spread?
https://www.youtube.com/watch?v=8QY0UjrsIow
What is the difference of spread and mat footing?
A spread footing (or isolated or pad) footing is provided to support an individual column. A spread footing is a circular, square or rectangular slab of uniform thickness. A mat or raft foundation is a large slab supporting a number of columns and walls under the entire structure or a large part of the structure.
What is the purpose of a so called Spread Footing?
A spread footing may be defined as a reinforced concrete footing poured into an excavation which has been dug by hand or by machine but which has been trimmed by hand to the specified dimensions. The primary purpose of this footing is to transfer vertical and horizontal loads from the building into the ground.
Where is footing used in construction?
Footings are an important part of foundation construction. They are typically made of concrete with rebar reinforcement that has been poured into an excavated trench. The purpose of footings is to support the foundation and prevent settling. Footings are especially important in areas with troublesome soils.
How deep is a spread footing?
… nearly all are supported on spread footings, which are of two types—continuous footings that support walls and isolated pad footings that support concentrated loads. The footings themselves are usually made of concrete poured directly on undisturbed soil to a minimum depth of about 30 centimetres (12 inches).
What does a spread footing look like?
A spread footing foundation has a wider bottom portion compared to a load-bearing foundation; the wider bottom "spreads" the weight of the structure over a larger area for greater stability. ... Spread footings may be circular, square, or rectangular. · Spread footings are common in residential construction.Jun 29, 2017
What is the minimum thickness for a spread footing?
6 inches
Is a spread footer a shallow foundation?
Spread footings are types of shallow foundation which transmit and distribute the point load from the structure (column, support) to the soil. The spread footings have been performed as masonry structures of complex rock blocks, bricks and unreinforced concrete.
What are the types of spread footing?
Spread footings may be circular, square, or rectangular.Jun 29, 2017