Strip foundation for a porch – poured along the perimeter of the future porch.

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A monolithic slab foundation is used on fairly strong soils. Most often it serves as a foundation for a fairly massive porch structure.
Columnar foundation for a porch – used on weak or moisture-saturated soils that tend to swell in winter.
Preparatory work
Before starting work, it is necessary to make preparations. First of all, choose a foundation for the porch that will best suit your case. First of all, it is necessary to evaluate the soil. If it is strong enough - sandy with gravel, rocky - then a strip foundation or a monolithic slab foundation will be quite suitable. If the house is on weak soil, prone to seasonal "walking", the best option would be a columnar foundation for the porch.

The next stage of preparatory work is marking. First of all, it is necessary to draw up a plan-scheme of the future porch, determine its dimensions and location relative to the house. Based on this data, marking is made on the ground. Using a tape measure, we measure the required distance, hammer in pegs along the russia mobile database and stretch an “axial thread” made of twine, fishing line or thin wire. It will mark the outer boundaries of the foundation for the porch.

It is necessary that the future foundation for the porch after marking has a clearly rectangular or square shape, and does not take the form of a rhombus or trapezoid. To do this, you need to measure the diagonals between the crosswise corners of the future foundation - they must be the same length. If the lengths of the diagonals are different, you need to make an adjustment, otherwise problems with the rhombus-shaped foundation may arise during the construction of the porch.

In some cases, there is no need to connect the foundation to the porch.

In case of choosing strip or tile monolithic technology, you should decide whether the foundation of your porch will be rigidly connected to the base of the house, or will be a separate structure. The first option is preferable on solid soils, where the size of seasonal "movement" of the soil is insignificant.