Estimate - a document that contains all the calculation with respect to the forthcoming work. Prepared this document during construction and any kind of repair or interior decoration. The estimate is needed to approve all expenditure and the total amount of future work. It is based on the formation of lay projects, statements regarding the defects, the total amount of work, the general technical specifications of buildings and material costs.
Budgeting - a necessary step in the execution of the installation or replacement of water supply, sewerage or heating pipes. It allows you to pre-determine the final cost of the process, thus eliminating the overhead. If the gasket is conducted independently, estimates for the installation of the pipeline will immediately buy everything you need and eliminate the problems that are associated with a lack of material or tools. If the repair is carried out working, the document with the calculation will help get rid of extra costs.
Table of contents:
- Budgeting rules for installation of the pipeline and the total estimate for construction works
- Calculation of estimates of direct pipeline installation
- Calculation of estimates for the installation of the heating pipe
Budgeting rules for installation of the pipeline and the total estimate for construction works
Making estimates for pipeline or other types of work, take into account the following factors:
- Features and options structures, their individual parts and a variety of design features that are included in the project. Simply put - it is necessary to calculate all of the buildings, which are included in the scope of work, to take into account their specific features - tabs rooms need pipeline in the wall, which will require additional drilling, the addition of elements that are not part of the old project.
- The total size of all the works, which are derived from the sheets and mounted volume elements, this factor is determined by the design materials. Based on the structure and type of parameters works calculated amount of material required is determined by its preferred form and value. For example, if the calculated estimate for the installation of running water in the bathroom, you need to calculate not only the footage of pipes, but also take into account the number of taps, fasteners, couplings, valves.
- Total number of instruments and auxiliary materials, which will be needed in the process of dismantling and installation. This is determined by a number of custom specifications, statements and various documents, which are part of the project. At independent cost estimate is necessary to make a list of tools and available tools that will be needed in the work.
- Taking into account the market price for the selected materials and the cost of the work, with the help of calculation to calculate the total amount of estimates. To sum price for the work used existing standards and indicators. To accurately determine the amount of that spent on materials, it is necessary to know their average market prices.
For the literate estimating need to know, and some of the factors that classify them into different types. So on buildings and structures estimates drawn up in such works:
- General construction.
- Construction works narrow specifications.
- Sanitary and technical measures.
- Laying electrical wiring, lighting.
- Installation of electric power plants.
- Installation and purchase of technological equipment, devices for monitoring and measuring various parameters in residential and industrial buildings, devices with low voltage - signaling, communications, automation devices.
- Laying communications pipe drinking water, sewage and heating.
Given the common area of the building or premises to be repaired, the estimate calculation is divided into the following types:
- Vertical layout works.
- Installation of utilities.
- Construction of roads and paths.
- Work on the improvement of the general local area, landscaping.
- Calculation of small architectural forms.
All these classifications must be considered to ensure that during the preparation of the estimates to calculate the order of execution of works and avoid unnecessary costs. Some types of construction have their own specifics, which can not be compared with other works. If you plan to not only the estimate for the installation of process piping, but also other related works on construction and repair, you take into account all the possible areas. Among them are the following:
- for the construction and repair of the foundation and walls of the underground parts thereof;
- construction and repair of walls;
- frame assembly;
- floors and coatings base, bases, roofs;
- installation of structures in the openings;
- installation of ladders and platforms;
- decoration and finishing works;
- works on installation of additional structures.
Specialized construction work:
- the foundation for a variety of equipment;
- specialized base;
- channel equipment and pits;
- chemical equipment, and other protective coatings.
Works on arrangement of internal sanitary-technical communications:
- drinking water conduit;
- diverter drainage;
- heating pipes;
- ventilation and air conditioning system.
Installation of various equipment:
- purchase and installation of process equipment;
- laying process tubes;
- installation of metal structures for installation.
Kalkuliruya totaling estimates, you must consider the following points:
The main costs, they include all the resources of the costs that will be needed in the process:
- material - materials, products, structures, equipment, furniture, inventory;
- Technical - rental equipment and mechanisms;
- labor - labor costs of workers, they are often included in the price of equipment. If calculated on the technological pipelines estimates, more often than not require lifting equipment and machines for digging trenches.
- Additional costs - take into account the price of the service a construction site, the process of the organization and its management.
- Estimated earnings - Total number of funds that will cover all the expenses for the development of production, social and financial incentives.
Calculation of estimates of direct pipeline installation
Turning directly to the design of the pipeline installation and preparation of its budget, it should be noted that this process has its own specification. Based on general rules above, must possess the knowledge and understanding of the process of laying and removing the tubes. To begin to determine the type of pipe, of which there are several:
- heat supply network.
- Drinking water.
- Diversion drains.
- Petroleum products.
- Technological pumping various liquids.
- Transportation of various raw materials.
In a domestic scale most frequently required disassembly estimates pipeline and its subsequent mounting, or only the liner pipe. Counting the project, you must consider the type of pipeline that is internal and external. Laying of pipes outside the building is the most complicated process than domestic work. The most important factor that affects the ease, speed and a lower cost of domestic work - it's easy to create the necessary conditions. The structure does not play a big role during the year, the availability of various atmospheric phenomena, the effect of the soil.
When it comes to laying the external heating network, measures must be taken to increase the life of the pipe and to minimize heat loss. These operations also carry with them additional costs. When calculating the estimate for installation of the pipeline, particular attention should be paid to the following factors:
- Type pipe and the material from which they are made.
- Total footage pipes.
- Mounting type and quantity of fasteners supports.
- The need to install expansion joints and their quantity.
- Protective agents that protect the pipe from corrosion.
- Thermal protection tubes.
If the pipes are installed in the ground, it is necessary to arrange the trays, impenetrable, impassable and poluprohodimye. Also, it is done in the case in heat supply networks are branching, switching cameras. Laying pipes under the ground includes earthworks - a ground to develop and loading it on the technique. During the planning arrangement passage channels, budgets compilation includes the following works:
- Development of soil to the dump or removal of soil on automotive engineering.
- base arrangement.
- Strengthening of the trench with concrete slabs or trays.
- Equipment waterproof protection walls and bottom trays.
- Mounting supports and compensators for pipeline.
- Priming pipe.
- Processing painted pipe.
- Arrangement of the heat-insulating layer.
- Laying slabs.
- Waterproofing protection of the assembly.
- Backfilling the trench.
At the time of the estimate, you need to leave as much as possible notes in the repair bill. This will help to make the most accurate estimators of costing. For example, one of the most common error is a drawing of one type of corrosion protection for water pipes and heating network. Often, this acts as 1 layer GF-021 primer and enamel layer 2 PF-115, while these materials are not deposited on the surface of high temperature.
Calculation of estimates for the installation of the heating pipe
Laying of heating network of the pipeline begins only after all capital elements of the building, at this stage, begins and budgeting. Initially, the network project is compiled, which shall include all piping that should be installed, as well as heating devices and equipment. The cost estimate is necessary to approve the following items:
- The total capacity of all the heating devices that will support the desired temperature in the building. Calculating their amount, take into account the quality of the insulation of the building and the climate of the region.
- The type of equipment - a gas heaters, electric, or for solid fuel.
- The type and total amount of all the equipment gives off heat.
- Accommodation, the total footage and variant Selected tubes.
Following the approval of all components of the system, perform the axonometric drawing pads all circuits. Also, at this stage constitute a schematic drawing of the location of the heat donating equipment in structure.
Further, based on all received data from the estimates and estimates its investor drawings form, which is the preliminary value calculation work. This calculation includes:
- The cost of all materials.
- The duration and type of work on the installation and commissioning of the system.
- The effort required to perform activities.
To facilitate the self-calculating estimates, it is necessary to use special programs that are available online. Most often, these programs are video and text instructions, which help to understand the algorithm of their work. If the work will perform contractor, then it must provide the following data:
- The task for the installation of engineering systems.
- The desired design of the project and type of finish.
- The drawings and the accompanying documents, which contains a draft.
The most expensive item budgets - this is the material and equipment. Details on the item must have the following data:
- heat generator - the boiler, furnace or fireplace.
- Pumps maintain pressure in the system.
- Equipment for automatic system control.
- pipeline type - polypropylene, metal and so on.
- Fittings of this type of conduit.
- Stop valves.
- Thermal and sound insulation materials.
Next, you need to pinpoint and paint order the necessary works, which include:
- Installation, connection and adjustment of heating equipment.
- systems equipment, which discharge the products of combustion - equipment ventilation and / or connection to the chimney.
- Mounting and connection of the heating circuits often included in a data item and making openings in the walls under the pipeline.
- Installation of "warm floor" system.
- Installation and connection of the radiator.
- Installation of automatic control of the heating system.
- Transport and associated costs.