Diagram of strip footing. A strip footing is also provided for a row of columns which are so closely spaced that their spread footings overlap or nearly touch each other. The strip footing foundation width is decided by considering bearing capacity of soil. The pressure of 100 is selected so that vertical stress contours represent a percentage change in the vertical stress with depth. In this diy guide find out how to construct concrete strip foundations for a building what they are how wide they need to be thickness and who you need to contact to inspect them to ensure they comply with building regulations for foundations.
Strip foundations or strip footings are a type of shallow foundation that are used to provide a continuous level or sometimes stepped strip of support to a linear structure such as a wall or closely spaced rows of columns built centrally above them. Thick structural reinforced concrete shear wall is to be supported by a strip footing. Since it is a strip continuous footing we can do a 2d analysis of a vertical symmetric axis through the footing. As name itself showcasing that it is a strip type footing which follows the path of superstructure wall.
Concrete strip foundations building foundations and footings foundation width and building regulations for foundations. Strip foundation is also called as wall footing. Construction studies drawing detail. The shear wall carries service dead and live loads of 10 kipsft and 125 kipsft respectively.
It is a continuous strip of concrete that serves to spread the weight of a load bearing wall across an area of soil. Types of footings used in building construction. The key sizes of a strip foundation for concrete cavity wall construction and timber frame cavity wall construction are similar. The footing load is applied as a y pressure of 100 kpa the minus sign indicates downward.
The size and position of the strip is directly related to the overall width of the wall. The allowable soil pressure is 5000 psf. In such a case it is more economical to provide a strip footing than to provide a number of spread footings in one line. A strip footing is provided for a load bearing wall.
Reinforced concrete shear wall foundation strip footing analysis and design a 12 in. This type of footing is constructed for load bearing walls. Based on a 350 mm block wall with an. The video shows how to set up and draw the foundation detail with references to the construction studies revision journal.