Online calculator for calculating the dimensions, reinforcement and amount of concrete of a monolithic strip foundation

Information on the purpose of the calculator

Online calculator of a monolithic strip foundation is designed to calculate the dimensions, formwork, the number and diameter of reinforcement and the volume of concrete required for arranging this type of foundation. To determine the appropriate type of foundation, be sure to contact the experts.

The strip foundation is a monolithic closed reinforced concrete strip passing under each load-bearing wall of the building, thereby distributing the load along the entire length of the strip. Prevents subsidence and change in the shape of the building due to the action of soil buckling forces. The main loads are concentrated at the corners. It is the most popular type among other foundations in the construction of private houses, as it has the best ratio of cost and necessary characteristics.

There are several types of strip foundations, such as monolithic and prefabricated, shallow and deep. The choice depends on the characteristics of the soil, the expected load and other parameters that must be considered on a case-by-case basis. Suitable for almost all types of buildings and can be used in the construction of basements and basements.

The design of the foundation must be carried out with particular care, since if it is deformed, this will affect the entire building, and correcting errors is a very complex and expensive procedure.

The following is a complete list of the calculations performed, with a brief description of each item.

General information on the results of calculations

• Total strip length
- The length of the foundation in the center of the strip, taking into account internal partitions.
• Ribbon foot area
- The area of support of the foundation on the soil. Corresponds to the dimensions of the required waterproofing.
• Outer side surface area
- Corresponds to the area of the required insulation for the outer side of the foundation.
• Volume of concrete
- The volume of concrete required to pour the entire foundation with the given parameters. Since the volume of ordered concrete may differ slightly from the actual one, as well as due to compaction during pouring, it is necessary to order with a 10% margin.
• Concrete weight
- The approximate weight of concrete is indicated by average density.
• Soil load from foundation
- Distributed load over the entire support area.
• Minimum diameter of longitudinal rebars
- The minimum diameter, taking into account the relative content of reinforcement from the sectional area of the strip.
• Minimum number of rows of reinforcement in the top and bottom chords
- The minimum number of rows of longitudinal rods in each belt, to prevent deformation of the strip under the action of compressive and tensile forces.
• Minimum diameter of transverse reinforcement bars (stirrups)
- The minimum diameter of the transverse and vertical reinforcement bars (stirrups).
• Step of transverse reinforcement bars (stirrups)
- Stirrup spacing required to prevent shifts of the reinforcing cage when pouring concrete.
• Reinforcement overlap
- When fastening segments of rods with an overlap.
• Total length of reinforcement
- The length of the entire reinforcement for knitting the frame, taking into account the overlap.
• Total weight of reinforcement
- Reinforcing cage weight.
• Form board thickness
- Estimated thickness of the formwork boards, for the given parameters of the foundation and for a given step of the supports.
• Number of formwork boards
- The amount of material for formwork of a given size.