When creating any project, the estimate is an important document, the purpose of which is to determine all the required costs, taking into account the expended labor resources and materials. Electrical work plays a very important role in construction, so in this case, saving money at the expense of quality is unacceptable. In this regard, a serious attitude to the preparation of estimates for electrical work is required.
Required Documentation
To draw up estimated costs, you need a plan for the premises of the BTI, tied to electrical equipment, and a design project for the electric part. The following documents will also be required:
- permit for power connection;
- TU for electrical work;
- limited liability document;
- balance sheet act;
- electrical equipment project.
An explanatory note, a single-line power supply scheme (calculated), a plan for group networks (lighting and electrical equipment), a scheme for additional equalization of potentials and approval of the plan in Rostekhnadzor should also be included.
Among other things, an order is drawn up for equipment for electrical installation, which includes information on the length of all wires, their manufacturing company and auxiliary materials. The order is drawn up with the same accuracy as the estimate.
Variety of estimates
Estimates for electrical work are divided into two categories: consolidated (integrated), compiled for the entire building, and local (object), performed separately for the room. Before you start writing them, you must complete the rationale for the investment. In this case, the estimated cost of all work is determined. Documents can be presented in two forms:
- Estimated calculation (contains a detailed cost price with an overestimation of the level of costs);
- estimate (calculation is carried out according to design drawings).
The second type allows you to make an estimate for electrical work more efficiently.
List of works
First of all, labor costs should be described. This will allow in the future to avoid a price increase. The list of works is presented below.
- Installation of wiring (open) on brackets on a concrete surface and on plaster walls.
- Laying wiring corrugation (open).
- Placing an electric box on concrete, a brick site and plaster.
- Mounting the patch box.
- Installation of the switch, socket and decorative insert.
- Mounting the soldering box in plaster, brick wall and concrete.
- Change the triple electrical unit.
- Installation of a socket.
- Setting a button for an electric bell.
- Build an electric bell.
- Creation of a hole in a plaster (brick, concrete wall) for an undergrowth.
Writing Algorithm: Stage 1
When drawing up an estimate for electrical work, it is necessary to determine the exact amount that is intended for the event in question. Further, the principle of operation is described below.
- Get a floor plan with reference to electrical appliances. The BTI or the studio making up the electrical projects can help with this.
- Get permission to connect capacities. This should be done in the DEZ or HOA. The same organizations should take a document on the division of operational responsibility between the balance holder and the owner.
- All specifications must be brought to standards, as they are strictly checked, and any deviation entails a refusal.
Writing Algorithm: Stage 2
After performing the previous operations, a number of important actions need to be performed.
- Turn to the good specialists who make up the design of electrical appliances. At this stage, it is important to turn to experts, because only professionally performed work can guarantee safe and constant operation for a long time.
- Choose the best company that provides installation services. To do this, you should take an interest in information about it, find out customer reviews about quality. In the estimates for electrical work, these costs are necessarily included.
- Find the right electrical appliances and include their cost in the estimate.
- Calculate the ratio of costs and balances. If funds are not enough, you should make the project easier by choosing less expensive equipment.
