DESIGN STAGES
- Creation of a technical specification for the development of the project. This requires technical conditions and requirements, as well as the results of all necessary surveys. After the approval of the technical specification, the balance is calculated.
- We then prepare a schematic diagram of engineering networks reflecting the points of entry and exit, pipeline routes, pumping installations, shut-off valves, places of installation of metering devices and connection of branches for end users.
- After approval by the customer, the project documentation must be approved by the control and supervisory authorities, and, if necessary, by the solutions issuing resource supply company (for certain technical solutions).
- When the approval processes are completed, compilation of detailed working documentation begins. It includes all the necessary technical drawings, axonometric diagrams, and equipment specifications. Documentation of this category is used for the installation of networks.
TYPES OF WATER SUPPLY SYSTEMS
By purpose , water supply systems are divided into 5 types:
- household: main water pipelines in cities, internal — in residential buildings, schools, hospitals, state institutions, etc.;
- agricultural — used in farms, places of cattle grazing, field camps and for land reclamation;
- firefighting – for extinguishing fires, used in fire-hazardous industries and social facilities (kindergartens, state institutions, shopping complexes, etc.);
- industrial purpose (industrial) — for factories, manufacturing facilities and other enterprises;
- combined type — for example, an industrial system with fire extinguishing functions.
According to the type of supplied water, the systems can be:
- household-drinking — only drinking water goes through them;
- production — for the supply of process water to industrial facilities (at different stages of the production chain);
- fire-fighting — in accordance with the name.
There is also a division by supply type. In this case, it is necessary to take into account whether the system is focused on water intake from underground sources (for example, from wells) or from surface sources (rivers, ponds, lakes, etc.).
Industrial water supply systems can be direct-flow and reversible. In the first case, the water is taken from the source and after the technological cycle goes directly to the purification plant. With the reverse scheme, the water after use is cleaned directly at the enterprise and goes to its technical needs: for example, to heating systems.
LIST OF THE MAIN REGULATORY DOCUMENTS FOR THE DEVELOPMENT OF WATER SUPPLY AND SANITATION SYSTEMS
The following documents serve as the regulatory framework for our projects:
- SP 30.13330.2016.
- SP 31.13330.2012.
- SP 32.13330.2018.
- SP 10.13130.2009.
- SP 73.13330.2016.
- SanPiN 2.1.4.1074-01 (drinking water).
If any regulatory documents are revised or cease to be valid, the work is corrected according to the changes made and the updated status.
COMPOSITION OF PROJECT AND WORK DOCUMENTATION
The project documentation for water supply systems should include:
- water supply network plan;
- schemes of water supply and sanitation systems;
- all mandatory calculations;
- specification of equipment, fittings and materials;
- technical specifications for embedded details, drilling, foundations, power supply and automation of the pumping station;
- Technical specifications for technological connection of the facility to water supply and sanitation networks;
- estimates for construction and installation works (if necessary);
- for already created objects — an act of pre-project inspection.
Also our project documentation always includes, its composition, title pages, contents and explanatory note in accordance with Government Decree No. 87 of 02/16/2008. A statement of the scope of work is attached upon request.
Work documentation is identical to the project documentation, with the exception of an explanatory note — its compilation is carried out as an appendix, if necessary. It is not required to specify its composition and content in work documentation.
COMPOSITION AND TYPES OF EXTERNAL ENGINEERING NETWORKS OF WATER SUPPLY AND SEWERAGE
Outdoor networks are built from the following technological nodes and elements:
- steel or plastic pipelines,
- water treatment stations,
- pumping units,
- nodes of water intake and withdrawal,
- shut-off and control equipment,
- control and measuring equipment,
- metering devices,
- inspection wells.
According to the method of wiring , outdoor water supply networks include:
- dead-end — for small buildings (for example, private houses), interruptions in water supply are allowed;
- ring-shaped — for structures of any size and non-stop water supply;
- combined — complex schemes, where there are both dead-end and ring branches.
Ground drainage networks are divided into gravity and pressure. Gravity drainage works without pumps — thanks to laying pipes at a precisely calculated angle. They are cheaper, but their throughput is limited. Pressure networks are more expensive, they need pumps, but such networks can pump a huge amount of water.
WHAT IS TAKEN INTO ACCOUNT WHEN DESIGNING WATER SUPPLY AND SANITATION
- At the initial stage, it is mandatory to calculate the balance — what volume of water will be supplied to the inlet and, accordingly, output.
- To trace a water pipe, you need to know the type of water source and its location (well, centralized water supply, etc.). The terrain profile is also important: slopes, hills, natural obstacles.
- Mandatory information for the construction and installation of networks is the drainage of wastewater (sewerage, septic tank, etc.), the type of water heating, already existing communications in the places of laying networks.
- For other projects there may be additional requirements. For example, if you want to use both drinking and non-drinking water in the household system, you will need an appropriate wiring diagram. In order to find out all the details, at the pre-project stage we ask clarifying questions and request a number of documents from the customer.
BASIC DOCUMENTS FOR PROJECT PREPARATION
- The initial technical conditions from the organization that supplies water (in city networks for example).
- Technical requirements for the desired network: wells, chambers, shut-off valves, control units, types of materials, conditions of construction and installation work.
- An Act of choosing the route for the outdoor water supply, approved according to the law.
- Technical conditions for crossing highways, railways, water obstacles (if any).
- Conclusions with the results of geological, geodetic, environmental engineering surveys — without these, the project documentation will not pass examination.
- Summary plan of all communications (for new construction sites).
- Requirements for the installation of additional wells for planned technical connections.
- Conditions for the phased construction of the water supply system.
HOW TO ORDER A WATER SUPPLY AND SANITATION DESIGN IN THE “MSB” COMPANY
We will be able to prepare a technical and commercial proposal if you shall describe the specifics of the project. To do this, there is a questionnaire on the website — you need to fill it out and send it to us.
After that, we draw up a TCP according to the specified conditions. If you approve it, we will send you the draft contract and the invoice.
Immediately after signing the contract, we start preparing schematics for approval. After you approve them, you need to make an advance payment.