Calculation and design of storm sewers: rules for the preparation of technical specifications for development

The storm sewer device allows you to protect the building and the territory adjacent to it from the damaging effects of rain and melt water. A well-designed system of storm water inlets, pipes, distribution wells and other devices allows you to organize the collection and removal from the estate of the entire amount of precipitation. The correct calculation of storm sewers ensures uninterrupted operation of the system for a long period of time with minimal maintenance costs for its components. The functioning of this system is necessary to maintain the strength of the foundations of buildings, the integrity of pedestrian walkways and access roads. Trust in the design of storm sewers is necessary for specialists who are professionally versed in this matter and have the appropriate profile education. In this case, the project is developed taking into account the peculiarities of the location of each object separately.

Automated design software

This video shows an engineering program that allows you to easily and quickly design outdoor storm sewer networks. After creating a sketch of the pipeline, the program issues a storm sewer project that meets all the requirements of SNiP and GOST.

The construction of storm sewers is carried out in strict accordance with the developed project. This document clarifies the issue of the construction of the drainage network, its length, as well as the direction and slope of individual pipelines. In addition, the design documentation indicates the number of building materials, specialized equipment, tools. All costs are summarized and the final budget of the engineering structure is determined.

In addition to collecting rain and melt water, the development of project documentation addresses the need for their purification, as well as possible and appropriate disposal methods.

Normative documents for calculations

When performing design work, specialists are guided by the requirements of a number of regulatory documents that are valid at a given time. Based on SNiPs 2.04.03-85, a sewage system is calculated, according to which excess moisture is removed from the site. This document contains all the formulas for which you need to make calculations. There you can also find instructions on the quality of the materials used and the technologies for installation work. It is important to accurately calculate the slope of the sewer. In this case, the designers take into account the type of drainage, the diameter of the cross-section of the selected pipes and the features of the coating of their surface.

Types of slopes of the pipeline - 3 different options

Also, the developers of the storm sewer project must take into account other regulatory acts (GOST 3634-99, as well as GOST 21.604-82). The finished project must be agreed upon by the supervisory authorities with the appropriate authority. In order to avoid problems with the coordination of project documentation, you must use the services of a design organization that has a license for this type of activity. Employees of such companies know all the nuances of designing projects and guarantee the quality of their preparation. If necessary, employees of the company whose services the developer decides to use will agree on a drainage project with Rospotrebnadzor, Vodokanal and other authorities that control this range of issues.

Remember that the company that prepared the project documentation, at the request of the customer, can monitor compliance with technical requirements for the construction of storm sewers. Implementation of the project under the supervision of developers is carried out from high-quality materials while accurately following the technologies used.

Required information for application for development

An application for the design of storm sewers is submitted to the design organization selected to prepare all the necessary documentation. Information must be attached to the application, namely:

• topographic plan of the land;
• data of geological surveys of the state of soils on this land plot;
• urban development plan of the territory;
• technical conditions for connecting to external engineering communications;
• preferred method of rainwater withdrawal from the site, etc.

The formation of the technical task is carried out taking into account the wishes of the builder and the information provided by him to the design organization. In turn, the project of drainage and storm sewage is created according to the technical specifications.

The design and estimate documentation contains a scheme for laying pipes and the locations of storm water wells, as well as other elements of the storm sewer system

Of the several trial versions of the project, one is selected, which, according to the customer and the designers, is the most effective. After agreeing on the selected version, all the private details of the engineering structure are worked out.

As a result, the design and estimate documentation issued in accordance with accepted standards is issued to the customer. An explanatory note with the following sections is attached to the graphic part of the project, consisting of all kinds of drawings,

• general project data (statements of working drawings, characteristics of equipment used, etc.);
• storm sewer scheme;
• plans of the territory on which the exact location of all elements of storm sewers is indicated;
• Hardware Specification;
• calculation and justification of the financial part of the project.

Designing storm sewers can only be done by trained specialists. If you do not know how to calculate the sewage system for draining rainwater from the site, then contact the professionals. Make sure that the design organization is licensed to provide such services.