Individual residential building - NPP, KZ, KM, engineering systems

Explanatory Note

General provisions

Plot No. 461 for the construction of an individual residential building is located in

The relief of the site is calm. On the site, sandy soils are predominant.

The construction site belongs to the II "B" climatic area.

Design winter air temperature for heating 28 ° С.

For the elev. 0.000 clean floor elevation of the 1st floor is accepted.

Architectural, space-planning solutions

The building is rectangular in plan with a veranda, two windows, three balconies, two-story with a basement and attic. The height of the main floors is 3.15 m, the basement is 3.75 m. The dimensions of the building in the axes are 11.6x9.3 m.

For communication between floors there is a two-march closed staircase. The building has one exit outside.

Balconies, a veranda staircase, a platform on the attic floor are equipped with railings.

The facade is finished with face brick. Window and door openings are made with quarters and widens along the perimeter. The corners of the building are also widened.

The walls are three-layer (brick bearing part 250 and 380 mm, insulation 100 mm made of polystyrene foam plates, face brick 120 mm).

The building slabs are made of 220 mm prefabricated hollow flooring. The flooring includes a noise-absorbing layer of wood-fibrous boards and expanded clay.

Filling of window and door openings is carried out with plastic windows and doors with double double double-glazed windows, the front door is steel. Fabrication of window and door blocks is performed upon the fact of opening.

The roof of the building is four-pitched with an external organized drain. The roof is made of metal cuttings according to a grate, counter-grate and wooden rafters. Insulation (polystyrene foam boards) is laid between the rafters. Channels for ventilation of internal layers of coating are provided. Access to the roof is provided by an attachment staircase and running stairs.

Flooring in the main rooms is performed by laminate, in bathrooms - by ceramic tiles.

Brick partitions 120 mm thick, gypsum board 100 mm thick. Lintels in brick walls and partitions are made of rolling profiles.

The internal surfaces of brick walls and partitions are plastered, painted with water-emulsion paints.

On the 1st floor of the building there is a fireplace. The thickness of the walls of the fireplace and the ceiling is 250 mm. The inner verst (120 mm) is made of refractory brick. The fireplace furnace hole is closed by a door made of heat-resistant glass. On the floor in front of the fireplace, a pre-fireplace made of ceramic tiles measuring 500 mm from the front wall of the fireplace is laid out. On the sides, the boundary of the platform is not less than 200 mm from the furnace hole on each side. Side walls of smoke collector connecting fireplace furnace with chimney are made with inclination of at least 45 ° to horizontal.

Design Solutions

The foundations for the building are tape from FBS units, monolithic columnar verandahs for columns.

Bearing external and internal walls are made of red brick of ordinary thickness 380 mm, brand M75, as well as a layer of insulation 100 mm and face brick 120 mm. Self-supporting external walls are made of red brick of ordinary thickness 250 mm, brand M75, as well as a layer of insulation 100 mm and face brick 120 mm. The walls are reinforced with a masonry net with a Ø4BpI mesh, a 50x50 mm cell, through 4-6 rows of masonry. Before laying, the grid is primed. Layers of galvanized mesh or stainless steel are laid in the levels of interstage floors.

Intermediate floors are made of HV and PC plates with thickness of 220 mm, bearing capacity of which is 800 kgf/m2. Balcony slabs and erker slabs are made of monolithic reinforced concrete on cantilever beams from rolling profiles. Additional insulation of beams is provided to prevent "cold bridges."

In the central load-bearing wall, a system of channels for passing engineering systems and ventilation is performed.

In the center of the building there is a monolithic reinforced concrete frame, on which rafters are installed and which is a stiffening diaphragm for roof elements. The base of the frame is in the floor level above the 1st floor.

The spatial rigidity of the building as a whole is ensured by the rigidity of the brick mutually perpendicular walls and the rigidity of the floor disks.

The stairs are made monolithic reinforced concrete along the cones made of metal profile: I-beam 20B1.

The load-bearing elements of the roof are: a monolithic reinforced concrete frame, a steel skate two-cantilever beam, steel rafters and a frame, wooden rafters.

Structural elements of the building are designed for loads including:

- own weight;

- normative temporary uniformly distributed load on floors 150 kgf/m2 (residential premises);

- wind;

- temporary snow design 180 kgf/m2.

Protection of building structures

All steel structures of the building are primed and painted with oil paints. Welding seams are cleaned, primed and painted with oil paints.

All steel structures shall be protected firefully by 30 mm thick grout plaster.

Wooden structures are treated with antiseptics and antiperenes.

Building Engineering Systems

The building provides the following engineering systems:

heating with heating of water in a gas boiler;

natural ventilation;

water supply;

sewerage into the pit;

power supply;

gas supply.

General Instructions

The power supply project of the residential building at the address: Moscow Region, Istra Rn, Obrikovsky s.s., Anosino Village, School 2 has been completed in accordance with the Customer's terms of reference and the requirements of the following regulatory documents:

"Electrical Installation Rules," edition 6.7;

SP311102003 "Design and installation of electrical installations of residential and public buildings. Code of Rules for Design and Construction ";

Guidelines for the Use of RBM in the Design, Installation and Operation of Electrical Installations of Buildings, 1999;

MGSN 20699 "Natural, artificial and combined lighting."

Power supply of the premises of the residential building should be performed in accordance with the permission for power connection. Design electrical loads of the house are determined on the basis of the architectural and planning section, tasks for the provision of electric power to technological and engineering equipment and in accordance with SP311102003, RD 34.20.18594.

The designed residential building includes: basement, 1st and 2nd floors of the house at the indicated address. All residential premises assume normal environmental conditions and do not include explosions and fire hazardous zones, with the exception of the garage. In terms of fire hazard, according to PUE, the garage room belongs to the area of class P-1. The room of the furnace house is not explosive (item 7.3.47 PUE).

External power supply and on-site networks

The external power supply of the residential building is carried out from the switchboard of the cottage village switchgear.

The supply network of the house exists along the line laid from the RB to the RB. The length of the cable line is up to 30 m.

The feed line is executed by a cable of brand VBBSHV 5х10 (admissible load current - 90 A). Loss of voltage in the supply network - not more than 0.58%.

380/220b Distribution Network Schematic Diagram

According to SP311102003 and RD 34.20.18594, electric receivers of a residential building belong to category III in terms of reliability of power supply.

The distribution network is assumed to be 380/220V with the transformer de-grounded neutral and TNS grounding system.

The installed power by cable input of priority load electric receivers is Ru = 23.8 kW, and the design power connected to the RDB, Rp = 15.0 kW at cos¼ = 0.93.

Installed power of electric receivers of disconnected load is Ru = 32.0 kW, design power Pp = 19.2 kW at cos¼ = 0.93.

The introduction board is installed in a residential building.

Power supply of consumers is supposed to be executed from VRS, SRP, ShchR-2, Shchrkot. independent lines in accordance with the power supply diagram.

Design sections of wires and rated currents of protection and switching devices are selected based on the installed power and operation modes of electric receivers in accordance with PUE.

Electrical lighting network of rooms must be made from 3x1.5 BBGngLS cable. Power the lamps to 220V voltage.

Make the group network of sockets with 3x2.5 BBGngLS cable. In all reconstructed rooms the socket and lighting networks are performed separately.

To protect against electric shock during operation of electric networks and electric receivers, all metal non-current-carrying parts of electric installations should be occupied by connection of zero protective conductor PE of distribution and group network. For domestic consumers connected to the socket network, use ultrasound with protection from overcurrent with leakage current up to 30 mA.

Electricity metering

To account for power supply, the cottage power supply design provides for installation of a 3-phase counter of DAN 2502 grade for direct switching on to 565 A current, cl. 2,0.

Installation Instructions

The distribution and group network shall be installed in accordance with the schematic electrical diagram and wiring plans in compliance with the requirements of PUE and SNiPIII93.

WBGngLS cable shall be laid by group networks hidden in voids of building structures in PVC pipe and open through walls and ceilings in cable channels, as well as in floor preparation.

Junction boxes for hidden wiring shall be set at 2.72.9 m from floor level. In boxes the connection of copper wires of the wire must be made under the clamp .

Use lights with filament lamps to illuminate the rooms. Place the lights as shown in the lighting grid plan. Set the switches at a height of 0.9 m from the floor level.

Sockets in residential premises shall be installed at a height of 0.15 m from the floor level. Socket sockets shall be equipped with a grounding contact and comply with the requirements of item 7.1.49 of PUE.

Install socket sockets in bathrooms and bathrooms in the 3rd zone according to GOST R 50571.1196 at a distance of at least 0.6 m from baths, washbasins shells. Electrical equipment installed by the Customer in these rooms shall comply with the PUE requirements of item 7.1.4748.

When installing a hot tub (Jacuzzi), ensure that the following conditions are met:

- the product must have a certificate of compliance with the Gosstandart of Russia;

- connection shall be performed in accordance with the factory instruction;

- connection of electrical equipment in zone 1 shall be made by cable in PVC-shell through gland inlet, which provides protection degree not less than IP55;

- the installation of junction boxes in zones 1 and 2 is not allowed, when the boxes are installed in zone 3, they must have a degree of protection not lower than IP44;

- installation of RCD on the bathroom power line is mandatory;

- open and external conductive parts of products and equipment, as well as protective conductors must be connected to an additional potential equalization system.

Electrical equipment and materials used for installation shall have a certificate of conformity with the Russian Federation.

PVC pipes shall have a fire safety certificate (NPB 24697).

Protective grounding of electrical installations

To ensure safe operation of electrical installations of residential premises, the project provides for the following.

When entering the supply cable, perform the main potential equalization system in accordance with item 1.7.82 of the PUE, for which all metal parts of utilities (reinforcement of the foundation metal frame, water supply and water heating pipes) should be connected to the main grounding bar in the GRP.

Use the PE bus as the main grounding bus. The cross-section of the grounding bus shall not be less than the cross-section of the PE (PEN) - conductor of the supply line. The bus structure shall allow individual disconnection of the conductors connected to it. Detaching should only be possible with a tool.

Charging of electric receivers is performed by connection of busy parts of electric installation to PE busbars of distribution boards by means of protective conductor (PE), cross section of which is selected in accordance with para 7.1.45 of PUE. The protective conductor is laid in such a way that during removal of the apparatus there is no rupture of the chain of suspension of other apparatuses, i.e. the laying of the protective conductor with a loop is prohibited.

Wiring shall provide easy recognition along the entire length of conductors by colors and comply with PUE para 2.1.31:

blue color - to indicate the zero operating conductor of the electrical network;

a two-color green-yellow combination over the entire length to indicate a zero protective conductor;

black, brown, red, purple, gray, pink, white, orange, turquoise - to indicate a phase conductor.

All structures of a residential building belong to category III according to lightning protection conditions. According to paragraph 8 of tab. 1 of RD 34.21.12287 to execute lightning protection by means of accession of the operated metal roof to working grounding of VRS not less than in two points, at the same time conductor cables to accept steel with a diameter not less than 6 mm. All protruding non-metallic elements shall be equipped with lightning receptacles connected to the roof metal.

Current leads from the metal roof shall be laid at least 25 m along the perimeter of the building.

Connections of lightning protection elements shall be made by welding followed by protection of the weld from corrosion with bitumen mastic.

Grounding of electrical equipment shall be performed in accordance with section 1.7 of PUE .