Strip foundations are used to support a line of loads, either due to a load-bearing wall, or if a line of columns need supporting where column positions are so close that individual pad foundation would be inappropriate.
A narrow strip foundation is just one type of foundation as there are many such as the wide strip foundation and also the raft foundation. A narrow strip foundation is the most commonly used for foundation for domestic dwelling (houses) the narrow strip foundation is made up of concrete, steel, brick, block, insulation, DPC (damp proof course) and DPM (damp proof membrane). A foundation is used to keep the building erect and also to ensure that the building will not sag to one side.
A narrow strip foundation is the most noticeable foundation as this foundation that can be seen above the ground as it is not place all the way into the ground. Excavations are made so that concrete can be pored into the excavation that has been made this will be the support.
wide strip foundation is usually used in poorer bearing soil condition..
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A stepped strip foundation is often used on a sloping site where the steps allow the foundation to follow the slope without too much excavation, when compared with excavations and retaining walls. A floor structure that spans between perimeter strip foundations , whether over intermediate piles or not, also minimises excavation, when compared with a slab on grade or slab on fill floor.
The raft will help to avoid any settlement that would occur to strip the foundation. The mat is just placed there to avoid slipping.
Well foundation is the most commonly adopted foundation for major bridges in India. Since then many major bridges across wide rivers have been founded on wells. Well foundation is preferable to pile foundation when foundation has to resist large lateral forces.
16inches above grade
This is a continuous strip of concrete which support load bearing walls which sit on the centre of the foundation.
A reinforced wide strip concrete foundation is used if the soil is soft or is of a low bearing capacity. This would not work for heavy or clumpy soil.
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A strip foundation is best known as the lowest part of your structure. The strip foundation is the first piece of supporting layer that is used with a foundation.
disvantages of a narrow strip foundation
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THREE DIMENSIONAL DRAWING OF STRIP FOUNDATIONS
Normal Strip, Deep Strip, and Wide strip Advantages it is far more common farmiliar technology it doesnt require specialised plant It is Cheap no need for form work reduce bricklaying below ground level fast allows increase bearing on low strength soils avoids excessive depth of foundation as width increases
World Wide Web Foundation was created in 2009.
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20mm
unit weight of sand used in strip foundations is 1700kg per cubic meter