What is diffrent between strap footing and wall footing?
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Abbas Khan Civil Engineer
STAP FOOTING: Strap footing is the part of a building foundation. It belongs to the type of combine footing, composed of two or more columns footings connected together by a concrete beam. The beam is called a strap beam for transmitting of a moment.
Wall Footing: Wall footing is a continuous strip of concrete that is used to spread the load of the load-bearing wall across an area of soil. It is also a type of shallow foundation.
Strip Footing (Wall Footing) :-
Strip Footing is one type of shallow foundation, and it is used to transfer load-bearing structure weight to the ground evenly. It is used only when soil bearing capacity is good. The width of footing generally kept as twice of the wall width.
Strap Footing is generally used when the column footing width is restricted due to limitations of the boundary. It is also called as cantilever footing and is one type of combined footing.
A strap footing is simply a combined footing with two or more footings (under a column each) are joined together with a beam to form a single combined footing;
whereas, a wall footing (or strip footing) is a footing like a concrete slab that spreads the load of the load bearing wall above it. Here, the wall is actually taking the structure’s weight and the strip footing (wall footing) is distributing it.
Strip Footing :- Strip footing is also known for the continuous longitudinal strip of concrete that serves as foundation for a wall. Strip footing spreads the load carried by a load-bearing wall across width wise area of soil. Hence, it is also known as shallow foundation.
Strap Footing :- Strap footing is necessitated when a certain column footing has to be restricted in width due to unavoidable interference or boundary limitation. Basically, it is a type of combined footing, consisting of one additional, or more full width column footings connected by a concrete beam.