Estimate for the installation of a structured cabling system. An example of calculating the cost of a local network. How is the testing of SCS lines estimated?

Completing work on time and on budget. View prices for SCS. We carry out design and installation of the SCS (LAN) network in Moscow, the Moscow region and the Central Federal District. System warranty for installation of SCS (LAN) 25 years.

After doing design work by SCS or receipt from the Customer already finished project(the availability of a project in most cases is mandatory both for high-quality installation of SCS and for further operation of the system) an implementation plan and a project for the installation of SCS computer networks are prepared, which are strictly adhered to by the installation department. In cases of capital repair and construction works, many contractors work at the facility at the same time. And coordination of work with related organizations is important part the work of the Flexis LLC team.

SCS CABLE ROUTES

When installing SCS networks in an office or at industrial facilities, SCS cable routes, as the most flexible, adjust to overall ventilation, heating, and even electrical routes. Very often, on projects of contractors of different engineering systems all engineering communications are successfully placed in the ceiling space of the corridor.

But during the installation process, it turns out that in fact the number of engineering systems is large, and there is little space in the ceiling space. And competent installation of SCS cable routes between ventilation, air conditioning, electrical, automation, subject to the required rules and regulations, is an important factor the quality of the installed system and an indicator of the quality and experience of the SCS contractor.

A typical solution for cable routes for most objects is as follows:

• for the backbone subsystem of the SCS of the building (between server rooms and floors, for example), an interfloor channel is organized using a ladder-type tray;
• within one floor, the main SCS route is built from a wire or perforated tray from a server cabinet, it is optimal to lay it as close as possible to the central axis of the object;
• from the tray to the socket, the cable is laid in a corrugated pipe in the overhead space and in the cavity of the walls (for flush-mounted sockets), or in the overhead space and further along the wall in the cable channel.

WORKPLACES SCS

When installing SCS (LAN laying), the largest amount of work and materials falls on horizontal subsystem SCS. This is a point-to-point connection, each patch panel port to each port (outlet) in the workplace. Separate continuous cable. No breaks, no twists/adhesions/joints. All these mounting tricks are easy to detect SCS testing. And such a system cannot be certified and supplied for a warranty period of 25 years.

Depending on the architectural, planning and design solutions, workplaces are equipped with different type sockets with in a different way installation of SCS sockets:

• Flush-mounted SCS sockets of the Valena Legrand type (most often installed in hollow plasterboard walls at a height of 20-25 cm from the floor);
• SCS sockets for boxes like Mosaic Legrand (usually installed on the main walls at the height of the table top, or under the table, installing the box on the table itself);
• SCS sockets for outdoor installation, not the most aesthetic, but perhaps the cheapest option;
• manholes and columns for open spaces.

There is no fundamental qualitative difference between the types of sockets, and the choice is most often determined by the practicality of the solution at a particular facility and the wishes of the Customer.

QUALITY SCS

In addition to such obvious characteristics as quality design decisions, the materials and equipment used, the performance of installation work, a high-quality structured cabling system (SCS) highlights the possibility of scaling the system without significant new costs. The ability to work with applications and perform business tasks not only today, but also tomorrow.

SCS price (price)

The table below shows prices for basic work installation of SCS (short price list with prices per unit of measurement). The complex cost of installation of SCS at the facility largely depends on the cost of materials, which is determined by the selected vendor (manufacturer) and the required category of SCS.

The indicated prices are basic and may vary up or down, depending on the area of ​​the object, the complexity of the work and the terms of payment under the contract.

*prices updated as of December 2019, incl. VAT 20%

* Prices are given for the conditions of work at a height of not more than 3 meters and a temperature not lower than +5 gr.

* Prices are reduced for large volumes of work by the appropriate coefficient in the form of a percentage discount.

* To obtain a final commercial offer for your facility, a specialist visits the place of work or the provision of project documentation is required.

Drawing up an estimate for the installation of a structured cable system(SKS) refers to one of the most complex types of estimates, the creation of which requires sufficient knowledge in the field of automation, communications and direct electrical work. The peculiarity of this type of calculation is that during the installation of LAN, SCS and telecommunications systems, a lot of modern, imported materials are used, which often have no analogues in estimate base rates. So, when preparing an estimate for the installation of a structured cabling system (SCS), it is necessary to install cross- and patch panels, RJ sockets and accessories for cable boxes, as well as laying UTP coaxial and optical cables. The correct selection of prices for estimating current non-standard solutions for launching a local area network and other low-current work is the responsibility of a professional estimator, who should be aware of technical innovations and classical approaches in the field of SCS.

A sample estimate for low-current systems (low-voltage), as well as calculations for a local area network, may include prices of various types, however, the most common option is the complex use of several parts from the collection for the installation of equipment, namely, the installation of electrical installations , means of automation and communication. Calculations for the installation of a structured cabling system often include such electrical installation prices as the installation of plastic boxes (TER (GESN) m 08-02-390)) and cable channels, laying a UTP cable in a box, laying vinyl plastic (corrugated) pipes with tightening they contain wires TER (GESN) m 08-02-409 and TER (GESN) m 08-02-412, marking of cable connections. Learn more about using electricity prices in budget calculations installation work You can read in the material on the preparation of estimates for electrical installation. In the same review, options for marking the installation of low-voltage cable systems are proposed for consideration using prices for automation and installation of communication equipment.

The basic structure of the collection on automation (part 11 FERm / GESNm / TERm) can be represented as a complex of eight departments, made up of prices for the installation of various instruments and equipment. This section opens with prices for the installation of structures for instruments and mechanisms. Other tables of the collection directly calculate the costs for the installation of automation equipment that can be installed on equipment, embedded devices: threaded and flanged connections. The third and fourth sections include prices for measuring equipment and instruments operating in industrial premises, with installation on boards, consoles and metal structures, as well as equipment for ASDU, SDAU, APCS, AIS, PAZ, incl. consoles, scoreboards, screens, blocks. Section 2 of the collections on automation contains prices for cutting shielded wires and cables and their inclusion in plug connectors, and section 8 - for connecting pipe and electrical wiring to automation systems.

As an example of the use of prices from the collection of installation works in terms of automation, as well as electrical equipment and communications, let's take local estimate for the installation of SCS, where the work on installing the equipment, and the electrical appliances themselves with components, are divided into two sections: installation work and materials.

Example of an estimate for low-current work (structured cabling systems)

In the example of the cost estimate, the electrical materials and equipment installed according to the prices are not indicated, since they are taken from the price lists of suppliers and can vary both in price and in electrical parameters. We list some materials and equipment: Legrand cable box 105x50, corrugated pipe, UTP cable, metal cable organizer, connecting cord, sockets, RJ45 patch panel, Legrand box accessory kit. Passive switching equipment and other network elements that make up the structural cable subsystem are taken into the estimate at the prices of suppliers, net of VAT, including TZR. This sample estimate for SCS is not advisable to use in other calculations without making the necessary adjustments, since it contains only an example or option for selecting prices for marking low-current work.

Structured cabling is one of the essential elements infrastructure of any modern organization. This is a single system that combines all corporate computer devices, local networks, cables, office equipment, and other components.

Therefore, the installation of SCS should be carried out exclusively by professionals, in accordance with all standards established at the state level. Testing is the final installation procedure, and is carried out in order to confirm the quality of the system before putting it into operation.

In the process of testing SCS lines, ultra-precise modern technical devices are used to detect the slightest malfunction in the system, to further eliminate it and prevent recurrence. Specialists also study all aspects of the functioning of the system in each of the possible operating modes.

Thus, testing the lines guarantees the reliability, stability and high quality of the SCS. In the event of a critical failure or emergency situation, specialists, based on the data obtained as a result of testing, will be able to restore the correct operation of all system components.

According to the results of the testing of the lines, the client receives a guarantee for the installed system, the validity of which is several decades. The appropriate category is assigned to the system, and its compliance with the approved requirements is confirmed.

How is the cost of testing the SCS lines compiled?

The price for testing SCS lines is determined on the basis of an estimate that includes all aspects that affect the final cost. The final cost is determined based on a number of individual criteria:

• types of work performed by specialists;
• the need for port testing;
• category assigned to the system;
• the number of lines;
• architecture and branching of the system;
• the location of the object;
• building area;
• the presence of readable markings;
• the presence of a scheme for the location of workplaces.

The estimate also includes the correction of hidden and visible system flaws, if any, and other additional operations. In the process of testing lines, it may be necessary to call them, urgently fix problems, replace equipment, etc.

All additional operations are previously agreed with the client, and are included in the estimate only at his request. The estimate also includes checking the system in real operating conditions, to detect negative environmental influences (also at the request of the client).

We offer highly qualified SCS testing, using the most modern equipment, at the best prices. Contact: 7 (499) 704-16-49.

Technical task:Creation local network for 18 workplaces in office premises. Ceiling height 2500mm. Wall material - brick, thickness up to 300mm. There is a false ceiling in the corridor, the distance from the false ceiling to the ceiling is 100mm. Installation of sockets should be carried out at a distance of 300 mm from the floor. Server and cross hardware installed.

Justification for the use of materials:The distance from the suspended ceiling to the ceiling of 100 mm does not allow the installation of metal trays, we lay the cable in a PVC pipe (the requirements of GOST R 53246-2008 prohibit laying the cable directly on the panels or the supporting frame of the false ceiling). The cable is laid in cable channel 40 x 20, providing, according to GOST 53246-2008, a fill factor of 50%. The cable channel is laid along the perimeter of the premises due to the significant rotation of workplaces in office premises, this solution will allow short time add new jobs. Cable UTP 5e calculated based on the length of the cable channel, vertical descent to the communication outlet 2000mm and a margin of 3000mm in the telecommunications distribution cabinet in accordance with GOST 53246-2008.

Fig.1Floor plan with the location of workplaces, server and cross equipment

Price: 26 690 rubles, attached below approximate estimate

The given prices for the installation of cable systems are indicative. The cost of services is determined individually in each case..

Initial data for the preparation of design estimates :