The gas pipe in the drawings is indicated by color. Symbols

Gas supply networks.

Conventions gas equipment

Explanations to the accepted terminology:
gas appliances are devices that do not require connection to gas ducts;
gas firing points are devices that are connected to gas ducts;
indications “before the meter” and “behind the meter” correspond to the direction of gas flow in the network.

Gas consumption: for every 1 m3 of air volume in a heated room for the heating season (September - May) with long-term combustion (in residential buildings) 18 -25 m3 of gas, with periodic combustion (in commercial premises) -10 -15 m3 of gas.

The color of pipelines in the drawings: gas pipelines - yellow , cold water pipelines - light blue, hot water pipelines - red .

Diameters of supply pipelines and gas flow rates for various devices.

	1. Scheme of the gas network in a semi-detached house 2. Diameters in the gas network leading to the meters with one apartment with a bathroom on the floor; with two apartments per floor. 3. Sizes of niches for 1 - 3 gas meters. OKF - clean floor level. 4. Niche for 1 electric and 1 gas meter. 5. Niche for 1 electric and 1 gas meter.
	6. Room for engineering network inputs (DIN 18012) with switching and locking devices for high and low currents, gas, water supply and sewerage. 7. Section of the premises of the inputs of engineering networks. 8. Plan of the premises for inputs of engineering networks.

The following devices do not require connection to gas ducts:

1. All types of gas cookers and gas refrigerators.
2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least ten times the gas flow.
3. Tanks for boiling clothes and washing machines with a gas flow rate of up to 2.5 m3 / h in rooms with a volume of at least ten times the gas flow rate.
4. Gas heaters installed against external walls with exhaust holes in the wall.

In all other cases (water heaters, boilers and larger washing machines, heating stoves, etc.), gas appliances must be connected to flues.

The supplying plant is obliged to install a fuse on the outlet pipe, which eliminates the possibility of condensation and the return of exhaust gases. The automatic hingeless valve of the Diermeier system with thermal control (Fig. 2) protects the premises from cooling through the gas duct and from disturbing the draft when the exhaust duct is used in mixed use (for exhaust gases from gas and solid fuel appliances); in addition, such a valve reduces the noise level. The content of carbon dioxide in the air of rooms designed for temporary stay of people (bathroom, kitchen, etc.) should not exceed 0.4%; in premises for long stays (common rooms and bedrooms) about 0.15%.

Gas ducts

It is allowed to connect no more than three firing points to a gas flue with a standard section of 135 x 135 mm in brick walls: gas flues with a cross section of more than 200 x200 mm should not be made; firing points operating on solid fuel and gas, if possible, should not be connected to the same gas duct. Gas ducts should be located in warm places to avoid the formation of condensate on cold walls. A windshield must be installed on the flue head. On flat roofs, flues must be at least 50 cm higher than the parapet (Fig. 3 and 4).

Gas consumption: for taking a shower lasting 5 minutes with a water heater with a capacity of 5 liters - 0.25 m3; for heating the room for 15 minutes - 0.25 m3.

Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.

Specification for liquefied gas (TRF 1969)

1. Gas combustion products 2. Fuse and valve on the device connection pipe 3. Exhaust pipe of flues on a flat roof 4. The same, if there is a veranda	5. Double-walled flue chimney 6. Bathroom and kitchen plan with a water heater in the hallway niche 7. Small compressed gas cylinders can be installed in any room except sleeping 8. Large cylinders are installed outside in a niche or in a free-standing, lockable sheet steel cabinet
	9. Scheme of the gas network connected to compressed gas cylinders

Places of installation of cylinders: small cylinders can be installed in any premises, except for sleeping rooms; large cylinders - outside the building in a locked metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000 kcal.

Liquefied gas costs almost 1/3 more than gas from the city network.
The pipe diameters for liquefied gas are much smaller than the diameters of city gas pipes due to the increased pressure.

Ernst Neufert. Structural design / Ernst Neufert "BAUENTWURFSLEHRE"

When a real estate object, for example, an apartment building, is put into operation, its inventory is necessarily carried out in order to legally fix the available areas. To this end, employees of the Bureau of Technical Inventory measure the premises. And then, based on the data obtained, they draw up a floor plan of the building.

However, to agree on the redevelopment, a floor plan of the building is not needed; it is enough to have a floor plan of the apartment or the non-residential premises that are planned to be redone. Thus, we can say that a floor plan or just a BTI plan is an information and reference type document, where, taking into account the measurements taken, the real state of the apartment (non-residential premises) is presented.

On the BTI plan are exact dimensions rooms and graphically marked the following elements:

• capital walls and partitions;
• balconies and loggias;
• door and window openings;
• plumbing fixtures and cookers;
• ventilation.

All these elements have symbols on the BTI floor plan.

Types of BTI documents

To coordinate redevelopment, the following types of documents issued by the Bureau of Technical Inventory are used.

Floor plan and explication

You can learn more about what these documents are, how and where they can be ordered from a separate articles. Here we only note that these are the simplest BTI documents, which provide a minimum of information about the object.

A floor plan is a diagram of an object, presented as a drawing with special symbols. At the entrance to the apartment, its number is indicated on the drawing. In addition, the sheet has a stamp of the BTI department that issued the document. Also, the BTI floor plan contains information about the legal address of the building and the floor on which the premises are located, as well as the date of its last inspection.

An explication is attached to the floor plan, which contains a list and purpose of all premises of the object - residential and auxiliary - indicating their area and ceiling height.

Floor plan with explication

Thus, a floor plan with an explication is two sheets of the same format, one of which reflects the floor plan in the form of a drawing, and the other is a table with the characteristics of rooms and premises.

BTI technical passport

A technical passport is a document that is specially designed to coordinate redevelopments.

Technical passport with BTI plan

We also have a separate one about him. But speaking in general, this is a more detailed document, which, in addition to the floor plan and explication, contains information about the house where the premises are located (series, material of walls and ceilings, number of storeys of the building, number of apartments, year of construction, etc.) , address plan, etc.

Floor plan with explication before redevelopment

This document is used to legalize redevelopment that has already been made, if illegal changes are indicated in the BTI documents with red lines. Read more about this.

In general, this document is similar to a floor plan with an explication, but has a special mark “before redevelopment” or “before refurbishment”.

Floor plan with explication before redevelopment

Any room consists of structural elements that have their own name, purpose, size, shape and other characteristics. On the plans of the BTI, they are reflected in the form of conventional graphic symbols, which are not always clear to the owners of the premises.

And since everyone who decides to redevelop their apartment and wants to do it legally will need to deal with some of these documents, it is important to be able to understand how and what is indicated on them. Therefore, further we will analyze the designations on the plans of the BTI.

Description of designations on BTI plans

Immediately, we note that the designations of the BTI do not depend on the type of document. That is, one or another element of the drawing is equally indicated both in the data sheet and on the floor plan.

First of all, the owners are interested in such a question, how is the designation of load-bearing walls on the BTI plan carried out? Many people think that in the drawing thick black lines mark the main walls, and thin - non-load-bearing partitions. But this is not always the case.

Therefore, it is impossible to determine according to the BTI plan which walls are load-bearing and which are non-bearing. In any case, the layman will definitely not be able to do this on his own, if only he turns to a specialist for help.

If the room was performed uncoordinated redevelopment, which became known to the BTI, then after the necessary measurements are made by an employee of the Bureau of Technical Inventory, all the changes made in the drawing will be marked with red lines.

Doorways are indicated as follows: within the boundaries of the line to indicate the partition, two small marks are applied perpendicularly in the form of parallel dashes. If there is a door leaf, another parallel line is drawn between them, extending beyond the wall boundary. This is exactly the designation of the door on the BTI plan.

Similarly, information about the presence and location of window openings is entered into the floor plan. The thickest lines in the drawing mark the facade walls, on which the windows are marked with two parallel lines with perpendicular limits on both sides, showing their width.

The numbering and area of ​​the room are displayed as fractional number, where the numerator is the room number, and the denominator is its area.

In addition, the location of plumbing and kitchen stoves in the “wet” areas of the apartment is applied to the BTI plans. Most often, you can guess which plumbing fixtures are indicated on the drawing by the contours geometric shapes denoting them. And you can also guess about the designation of the electric stove on the BTI plan.

For reference: furniture, refrigerator, air conditioner, washing machine, dishwasher, heated towel rail, oven, etc. are not marked in any way on the floor plan of the BTI. Also, the flooring material in the premises does not have any designations in the BTI passport.

It is easiest to decipher the designations on the BTI plan using specific examples.

If you need to find out the symbols of the BTI, and also need help in developing project documentation and coordinating redevelopment in state bodies, our employees are always ready to help with this.

GOST 21.609-2014

INTERSTATE STANDARD

System of design documents for construction

RULES FOR THE IMPLEMENTATION OF WORKING DOCUMENTATION FOR INTERNAL GAS SUPPLY SYSTEMS

System of design documents for construction
Rules for execution of working documents of internal gas systems

OKS 01.100.30

Introduction date 2015-07-01

Foreword

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-92 "Interstate standardization system. Basic provisions" and GOST 1.2-2009 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for the development, adoption, application, renewal and cancellation

About the standard

1 DESIGNED BY OPEN joint stock company"Center for the Methodology of Rationing and Standardization in Construction" (JSC "CNS")

2 INTRODUCED by the Technical Committee for Standardization TC 465 "Construction"

3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Minutes N 46-2014 dated December 5, 2014)

Voted to accept:

4 By order of the Federal Agency for Technical Regulation and Metrology of December 12, 2014 N 2030-st, the interstate standard GOST 21.609-2014 was put into effect as a national standard Russian Federation from July 01, 2015

5 INSTEAD OF GOST 21.609-83


Information about changes to this standard is published in the annual information index "National Standards", and the text of changes and amendments - in the monthly information index "National Standards". In case of revision (replacement) or cancellation of this standard, a corresponding notice will be published in the monthly information index "National Standards". Relevant information, notification and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet

1 area of ​​use

1 area of ​​use

This standard establishes the composition and rules for the implementation of working documentation for internal gas supply systems for buildings and structures for various purposes.

2 Normative references

This standard uses normative references to the following interstate standards:

GOST 2.303-68 Unified system for design documentation. lines

GOST 2.317-2011 Unified system for design documentation. Axonometric projections

GOST 21.101-97 * System of design documentation for construction. Basic requirements for design and working documentation
_______________
* On the territory of the Russian Federation, GOST R 21.1101-2013 applies.


GOST 21.110-2013 System of design documentation for construction. Specification of equipment, products and materials

GOST 21.114-2013 System of design documentation for construction. Sketch drawing rules general types non-standard products

GOST 21.205-93 Design documentation system for construction. Symbols of elements of sanitary systems

GOST 21.206-2012 System of design documentation for construction. Symbols of pipelines

GOST 21.208-2013 System of design documentation for construction. Automation of technological processes. Conventional designations of devices and automation equipment in diagrams

GOST 21.501-2011 System of project documentation for construction. Rules for the implementation of working documentation for architectural and structural solutions

Note - When using this standard, it is advisable to check the validity of reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or according to the annual information index "National Standards", which was published as of January 1 of the current year, and on issues of the monthly information index "National Standards" for the current year. If the reference standard is replaced (modified), then when using this standard, you should be guided by the replacing (modified) standard. If the referenced standard is canceled without replacement, the provision in which the reference to it is given applies to the extent that this reference is not affected.

3 Terms and definitions

In this standard, the following terms are used with their respective definitions:

3.1 gas supply system: Technological complex of the gas network of the consumer, located from the place of connection to the gas distribution network to the gas-using equipment and consisting of external and internal gas pipelines and technical devices on them.

3.2 gas pipeline: Part of the gas distribution system, consisting of a pipeline for the transportation of natural or liquefied hydrocarbon gases, with the exception of structures and devices installed on it.

3.3 internal gas pipeline: Gas pipeline laid inside the building from the inlet gas pipeline to the installation site of gas-using equipment.

3.4 gas-using equipment (installation): equipment, where technological process gas is used as fuel.

4 General provisions

4.1 The working documentation of internal gas supply systems is carried out in accordance with the requirements of this standard, GOST 21.101 and other related standards of the Design Documentation System for Construction (SPDS), as well as regulatory documents for the design of networks and gas consumption systems.

4.2 The composition of the working documentation of internal gas supply systems (hereinafter referred to as gas supply) includes:

- working drawings intended for the production of construction and installation works (the main set of working drawings of the GSV brand);

- sketch drawings of general views of non-standard products, performed in accordance with GOST 21.114;

- specification of equipment, products and materials;

- Questionnaires and dimensional drawings (if necessary);

- local estimate (if necessary).

4.3 The composition of the main set of working drawings of the GSV brand includes:

- general data on working drawings;

- location drawings (plans and sections, fragments of plans and sections, local views and nodes) of gas pipelines and gas-using equipment (hereinafter referred to as equipment);

- schemes of gas supply (gas consumption);

- drawings (plans, sections, components and diagrams) of gas-using installations.

It is allowed to include in the main set of working drawings rectangular isometric projections of gas supply systems obtained from an electronic model of a building (structure).

4.4 Gas pipelines and their elements in the drawings are indicated by conventional graphic symbols and (or) simplified images in accordance with GOST 21.206. Gas pipelines on the diagrams are indicated by conventional graphic symbols.

4.5 Alphanumeric designations of gas pipelines are taken according to Table A.1 (Appendix A) and indicated on the drawings and diagrams in accordance with GOST 21.206. An example of applying alphanumeric designations is shown in Figure 1.

Figure 1. An example of applying alphanumeric designations

Picture 1

4.6 Installations are assigned a designation consisting of the installation number within the system and the designation of the gas pipeline in accordance with 4.5.

Example - 1G1, 2G3

4.7 The risers of gas pipelines are marked with a brand consisting of the letter designation "St" and the serial number of the riser within the building (structure).

Example - St1, St2

4.8 When specifying the nominal diameter of the reinforcement in the drawings and diagrams, the symbol "" is given in front of the dimension number.

When specifying the nominal diameter (nominal bore) of gas pipelines and their elements in the drawings and diagrams, the sign "" or the symbol "" is given in front of the dimension number in accordance with Figure 2 a, 2in. When specifying the outer diameter and wall thickness, the sign "" is applied in front of the dimension number (Figures 2 b, 2G).

Figure 2. Legend

Figure 2

4.9 Graphic designations of elements of gas supply systems (gas-using equipment and fittings) are adopted in accordance with GOST 21.205, taking into account additional conventional graphic designations given in Table B.1 (Appendix B).

4.10 Examples of constructing conventional graphic symbols for system elements are given in Table B.2 (Appendix B) and GOST 21.205 (Appendix A).

Examples of constructing symbols and simplified graphic images of system elements in diagrams performed in axonometric projections are given in GOST 21.205 (Appendix B).

4.11 Symbols for devices, automation equipment and communication lines are accepted in accordance with GOST 21.208.

4.12 Level marks of structural elements, equipment, gas pipelines, etc. indicate in accordance with GOST 21.101.

4.13 Designations of slopes on sections and diagrams are applied in accordance with GOST 21.101, while the numerical value of the slope is indicated as a decimal fraction accurate to the third decimal place.

5 General data on working drawings

5.1 The composition of the general data on the working drawings of the GSV brand, in addition to the information provided for in accordance with GOST 21.101, includes the main indicators of the gas supply system in form 1 (except for residential buildings).

Form 1 - Main indicators of the gas supply system (gas consumption)

Note:

1 The characteristics of the gas used are indicated in the "Note" column.

2 The dimensions of form 1 graphs can be changed at the discretion of the developer, if necessary.

3 Lines delimiting horizontal lines may not be drawn.

5.2 The specification sheet provided for by GOST 21.101, as part of the general data on the working drawings of the GSV brand, is not fulfilled.

5.3 V general instructions in addition to the information provided for in GOST 21.101, they give:

- references to regulatory documents, according to which the calculation of gas supply systems was made;

- characteristics of system installations;

- requirements for the manufacture, installation, testing, painting and insulation of gas pipelines, as well as the conditions for their laying;

- special requirements for gas supply, such as explosion and fire safety.

General instructions should not repeat technical requirements placed on other sheets of the main set of working drawings of the GSV brand, and give a description of the technical solutions adopted in the working drawings.

6 System drawings

6.1 Drawings of the location of equipment and gas pipelines

6.1.1 Drawings of the location of equipment and gas pipelines in buildings and structures are performed in accordance with GOST 21.101

6.1.2 Images in the drawings (plans and sections, fragments of plans and sections, local views and nodes) are performed on a scale of 4.15.

6.1.3 On the plans, their fragments and nodes (remote elements), equipment, installations, gas pipelines and other elements of systems are depicted with a thick main line in accordance with GOST 2.303, building construction and technological equipment - solid thin line.

6.1.4 Equipment and installations for which there are no conventional graphic symbols are indicated on the plans in the form of simplified graphic images, and gas pipelines and other elements of the systems - with conventional graphic symbols.

6.1.5 On fragments of plans and nodes, gas pipelines, fittings and other devices are depicted in a simplified or conditional graphic designation, depending on the scale of the drawing and the diameter of the pipeline. Gas pipelines are depicted in a simplified way with two lines, if their diameters in the corresponding scale are 2 mm or more in the drawing, while fittings and other devices are also depicted in a simplified manner, taking into account their overall dimensions.

Gas pipelines, made by conventional graphic symbols in one line and located one above the other in the same plane, are conventionally depicted on the plans as parallel lines.

6.1.6 On the plans and sections, apply and indicate:

- coordination axes of the building (structure) and the distance between them (for residential buildings - the distance between the axes of the sections);

- building structures and equipment to which gas and air are supplied and from which combustion products are removed, as well as affecting the laying of gas pipelines;

- marks of levels of clean floors of floors and main platforms;

- dimensional references of gas-using installations and equipment, supports (fasteners), inputs (outputs) and risers of gas pipelines to coordination axes or structural elements;

- dimensions of operational passages;

- alphanumeric designations and diameters of gas pipelines;

- positional designations (brands) of equipment, installations, supports (fasteners) and risers of gas pipelines on the shelves of leader lines;

- level marks or height dimensions of the installation of instruments (if necessary).

In addition, the plans indicate the names of the premises in which gas-using equipment is installed, and in the rectangle - the categories of premises for explosion and fire hazard (except for residential buildings). It is allowed to give the names of the premises and the category of premises for explosion and fire hazard in the explication of the premises in accordance with form 2 GOST 21.501.

The sections indicate the marks of the levels of the axes of the gas pipelines and the top of the discharge gas pipeline (candles).

On plans and sections of the location of household equipment (for example, gas stoves, water heaters) and gas pipelines in residential buildings, public utilities and public buildings provide data on the volume and height of the room in which this equipment is installed, and also indicate the location of the chimneys (their cross section) and the location of the ventilation grilles.

6.1.7 Examples of the implementation of the plan for the location of equipment and gas pipelines of the boiler house are shown in Figure B.1 (Appendix B), the section - in Figure B.2 (Appendix B).

An example of a plan for the location of household equipment and gas pipelines in a residential building is shown in Figure B.3 (Appendix B).

6.2 Schemes of gas supply systems

6.2.1 System diagrams are performed in axonometric oblique frontal isometric view or in a rectangular isometric projection according to GOST 2.317 without distortion along the axes , , .

6.2.2 Gas pipelines and fittings in the diagrams are indicated by conventional graphic symbols, and equipment for which there is no symbolic graphic symbol is indicated by a simplified graphic image.

For residential and communal buildings, instead of a graphic representation of the connected equipment, it is allowed to indicate its name.

6.2.3 The designed gas pipelines, fittings and other devices in the diagrams are depicted as a solid thick main line. Equipment, as well as existing pipelines, fittings and other devices, are depicted as a solid thin line.

6.2.4 In case of long and (or) complex location of gas pipelines, it is allowed to depict them with a break in the form of a dotted line. The places of gas pipeline breaks are indicated in lowercase letters (Figure 3).

Figure 3. Places of gas pipeline breaks are indicated in lowercase letters

Figure 3

6.2.6 * On the diagrams apply and indicate:
_______________



- risers of gas pipelines and their designations;

- inputs of gas pipelines indicating the diameters and elevations of the axes of the pipelines at the points of their intersection with the axes of the outer walls of the building (structure);

- gas pipelines and their diameters;

- shut-off and control valves;

- equipment, instrumentation and other elements of systems. In this case, the letter designations of the measured quantities and functional features of the devices are taken in accordance with GOST 21.208;

- embedded structures (selective devices for the installation of instrumentation) indicating the designation of the structure and the document. Embedded structures on pipelines and other elements of systems are indicated by dots with a diameter of 2 mm;

- marks of levels of axes of gas pipelines;

- slopes of gas pipelines (for wet and liquefied hydrocarbon gas);

- dimensions of horizontal sections of gas pipelines in the presence of gaps.

6.2.8* On the sheet where the diagram is shown, if necessary, the nodes (remote elements) of the diagram and text explanations are given.
_______________
* The numbering corresponds to the original. - Database manufacturer's note.


On the nodes of the diagrams for shut-off and control valves, on the shelf of the leader line, the diameter of the valve is indicated and under the shelf - the designation of the valve (according to the catalog).

It is allowed to cite in a similar way the diameters and designations of shut-off and control valves on the system diagrams.

6.2.9 In the main inscription and above the scheme, the name of the scheme is indicated in full: "Gas supply scheme".

6.2.10 An example of a gas supply scheme for a boiler house is shown in Figure D.1 (Appendix D), a gas supply scheme for a residential building - in Figure D.2 (Appendix D).

7 Drawings of gas-using installations

7.1 Drawings (plans, sections and diagrams) of gas-using installations should be made if the installation has two or more constituent parts(elements of the installation), the need to show ways of attaching the components of the installation to each other or to supporting structures, the absence of standard installation drawings or installation drawings of the manufacturer. In other cases, installation drawings are not performed.

7.2 On the plans and sections of the installations, the elements of the installations are depicted in a simplified way. If it is necessary to show the methods of fastening the components of the installation or their connection to each other, the corresponding elements are depicted in detail, as a rule, on the nodes of the plans and sections of the installations.

7.3 Rules for the representation of equipment, pipelines, fittings and other devices on plans, sections and units of installations are adopted according to 6.1.2-6.1.5, on diagrams of installations - according to 6.2.1-6.2.3.

7.3* The rules for depicting equipment, pipelines, fittings and other devices on plans, sections and units of installations are adopted according to 6.1.2-6.1.5, on diagrams of installations - according to 6.2.1-6.2.3.
_______________
* The numbering corresponds to the original. - Database manufacturer's note.

7.4 Elements of installations are assigned positional designations, consisting of the designation of the installation according to 4.6 and the serial number of the element within the installation.

Example - 1G1.1, 1G1.2, 2G3.1, 2G3.2

7.5 On the plans and sections of the installations, the following is applied and indicated:

- coordination axes of the building (structure) and the distance between them;

- marks of clean floors of floors (sites);

- dimensional references of installations to the coordination axes or to structural elements of the building (structure);

- the main dimensions and level marks of the installation elements;

- alphanumeric designations of gas pipelines (see 4.5);

- diameters of gas pipelines;

- reference designations of equipment, fittings, embedded structures and other devices.

On the plans and sections of the installations, in addition to the elements of the installations, building structures are indicated.

7.6 The installation diagram is carried out without observing the scale, the actual spatial arrangement of equipment and gas pipelines is taken into account approximately.

On the diagram, apply and indicate:

- equipment, gas pipelines, fittings and other devices;

- instrumentation (if necessary);

- alphanumeric designations of gas pipelines, as a rule, in breaks in gas pipeline lines;

- diameters of gas pipelines;

- reference designations of equipment, fittings, embedded structures and other devices;

- the direction of the flow of the transported medium.

7.7 On the drawings of the installations, if necessary, the technical requirements for the installation of the installations are given.

7.8 To the drawings of the installations, a specification is drawn up in form 7 GOST 21.101, which, as a rule, is placed on a sheet showing installation plans. It is allowed to carry out the specification on separate sheets as subsequent sheets of drawings.

7.9 The specification for the installation drawings includes equipment, installation structures, fittings, embedded structures and other devices, as well as gas pipelines for each diameter.

The specification does not include elements of gas pipelines, the range and quantity of which is determined according to the current technological and production standards (bends, transitions, tees, crosses, flanges, gaskets, bolts, nuts, washers).

7.10 In the column "Pos." indicate the reference designations of the installation elements in accordance with 7.4 sequentially for each installation. For gas pipelines, the column is not filled out.

In the column "Name" for each installation, write down the alphanumeric designation according to 4.6 in the form of a heading and underline.

7.11 In the specification, the installation elements are recorded in groups in the following sequence:

- equipment;

- fittings;

- other elements of installations;

- embedded structures;

- gas pipelines for each diameter.

7.12 In the main inscription, the name and alphanumeric designations of the installations (see 4.6) are indicated in full.

Example - Installations 1G1, 2G3

7.13 Examples of the implementation of the plan and section of the installation are shown in Figures E.1-E.3 (Appendix E).

An example of the implementation of the installation scheme is shown in Figure E.1 (Appendix E).

8 Specification of equipment, products and materials

8.1 The specification of equipment, products and materials (hereinafter referred to as the specification) is performed and designated in accordance with GOST 21.110, taking into account the requirements of this standard.

8.2 If the production building (structure) provides for attached or built-in parts in which auxiliary premises are located, then the specification is made up in parts:

- production part;

- auxiliary part.

If a residential building provides for attached or built-in parts to accommodate enterprises and public institutions, then the specification is also compiled in parts:

- residential part;

- auxiliary part.

The name of each part is written as a heading in the column "Name and technical specifications and underline.

8.3 Elements of systems (equipment, products) and materials in the specification or part of it are recorded in groups in the following sequence:

- equipment;

- pipeline accessories;

- other elements of systems (including supports and fastenings of gas pipelines);

- embedded structures (selective devices for the installation of instrumentation);

- gas pipelines;

- materials.

Within each group, the elements of the systems are recorded in ascending order of their main parameters (for example: type, brand, diameter, section).

Gas pipelines in the specification sections are recorded for each diameter.

Installation elements included in the specifications for installation drawings are also recorded in the corresponding specification groups.

Elements of gas pipelines, the range and quantity of which are determined according to the current technological and production standards, are not included in the specification. Such elements may include bends, transitions, flanges, gaskets, bolts, nuts, washers, etc.

8.4 The following units of measurement are accepted in the Specification:

- equipment (installations), supports (fastenings) of gas pipelines, embedded structures (selective devices for installation of instrumentation) and other elements - pcs.;

- gas pipelines - m;

- insulating materials - m;

- coating and protection materials - m;

- other materials - kg.

9 Questionnaires and dimensional drawings

9.1 Questionnaires and dimensional drawings are performed in accordance with the data of equipment suppliers and are completed in the form of a separate issue with the name "Questionnaires".

The issue "Questionnaires" is assigned an independent designation, consisting of the designation of the main set of working drawings of the GSV brand and through the cipher point "OL". The designation is indicated on the title page of the issue of questionnaires.

Example - 2345-11-GSV.OL

9.2 If there are two or more questionnaires (dimensional drawings), then after the title page of the issue of questionnaires, the content is placed, which is performed in accordance with GOST 21.101. The content is assigned a designation consisting of the designation of the issue of the questionnaires and through the hyphen of the cipher "C".

Example - 2345-11-GSV.OL-S

9.3 In the name of the questionnaire (outline drawing) indicate its designation or serial number within the issue.

9.4 Changes to the questionnaires (dimensional drawings) are made in accordance with GOST 21.101, taking into account the additional requirements of this standard.

Changes to the questionnaires (outline drawings) are made independently within each questionnaire (outline drawing).

Information about the changes made to the questionnaires (dimensional drawings) is given in the "Note" column of the content of the issue of the questionnaires.

9.5 Issue of questionnaires is recorded in the "Attached Documents" section of the list of reference and attached documents, which is included in the general data on the working drawings of the main set of the GSV brand.

Annex A (mandatory). Alphanumeric designations of gas pipelines

Annex A
(mandatory)

Table A.1

Appendix B (recommended). Conventional graphic designations of gas-using equipment and fittings

Table B.1 - Symbols for gas-using equipment and fittings

Annex B (informative). Examples of drawings for the location of equipment and gas pipelines

Annex B
(reference)

Figure B.1 - An example of a plan for the location of equipment and gas pipelines of a boiler room

Section 1-1

Figure B.2 - An example of a cut for a boiler room

Figure B.3 - An example of a plan for the location of household equipment and gas pipelines in a residential building

Annex D (informative). Examples of gas supply schemes

Annex D
(reference)

Figure D.1 - Scheme of gas supply to the boiler house

Figure D.2 - Scheme of gas supply to a residential building

Annex D (informative). Examples of the implementation of the plan and section of the gas control unit (GRU)

Annex D
(reference)

Figure D.1 - An example of the implementation of the plan

Figure D.2 - An example of a cut

Figure D.3 - An example of a node execution

Annex E (informative). Installation scheme example

Appendix E
(reference)

Figure E.1 - An example of the installation scheme

UDC 691:002:006.354 OKS 01.100.30

Key words: Project documentation system for construction, implementation rules, working documentation, internal gas supply systems (gas consumption)
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Electronic text of the document
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2015

When compiling construction drawings, alphanumeric designations of gas pipelines applied to them should be affixed in accordance with the data given in GOST 21.609–83.

This standard defines both the composition of the working drawings of gas supply systems for buildings and structures of all sectors of the national economy of the country and its industry, and the rules that must be strictly and strictly followed when drawing up this technical documentation.

workers blueprints systems gas supply must be carried out in full compliance with all the requirements set forth in the state standard mentioned above, as well as other standards relating to construction documentation. In addition, they must fully comply with the standards that have been adopted and are in force today regarding the design of gas supply systems.

Working drawings systems gas supply should include:

Common data;

Drawings, sections, views and plans for the location of the gas pipelines themselves, gas equipment, gas instrumentation (control and measuring instruments);

Schemes of gas supply systems;

Sketch drawings and drawings of general views of non-standard structures and devices of gas supply systems;

Drawings, sections, views, diagrams and plans of gas supply installations.

The main set of working drawings of the brand FGP should be supplemented by documents such as a bill of material requirements and equipment specifications. They must be carried out in accordance with the requirements GOST 21.109–80.

On technical drawings for the designation of gas pipelines, it is necessary to use graphic images that are provided GOST 21.106–78.

The diameter that the gas pipeline has and the thickness of its wall is indicated on the shelf of the extension line.

For those gas pipelines that are built from steel water and gas pipes, parameters such as wall thickness and diameter of its conditional passage are indicated.

For those gas pipelines that are made of steel, electric-welded and other pipes, parameters such as wall thickness and outer diameter are indicated.

In such cases, when the designation of a gas pipeline consisting of letters and numbers is indicated on the extension line shelf, parameters such as its diameter and wall thickness are placed under it.

To designate gas pipeline risers, a brand is used that consists of the letter combination "St" and the serial number of the designed riser within the structure, indicated by a hyphen, for example: St-2, St-4.

The gaseous state is one of three states of aggregation. Its main characteristic is that the particles that make up the substance (atoms, molecules or ions) are in very weak connection with each other and are very mobile. They are almost constantly moving, quite often colliding with each other, and this movement is disordered, chaotic, free. Particles often change the direction of their movement.

A gas is often defined as a substance whose temperature is equal to or above a certain critical temperature at which it does not compress and does not become liquid. state of aggregation. This is precisely the difference between gas and vapor, which consists of the smallest particles of liquid.

Vapor is a state of matter in which it can either become liquid or solid.

Just like liquids, gases resist deformation and have fluidity. However, they do not have a certain fixed volume, trying to fill all that is available to them. In addition, unlike liquids, gases do not form a free surface.

1. Scheme of the gas network in a semi-detached house 2. Diameters in the gas network leading to the meters with one apartment with a bathroom on the floor; with two apartments per floor. 3. Sizes of niches for 1 - 3 gas meters. OKF - clean floor level. 4. Niche for 1 electric and 1 gas meter. 5. Niche for 1 electric and 1 gas meter.

6. Room for engineering network inputs (DIN 18012) with switching and locking devices for high and low currents, gas, water supply and sewerage. 7. Section of the premises of the inputs of engineering networks. 8. Plan of the premises for inputs of engineering networks.

The following devices do not require connection to gas ducts:

1. All types of gas cookers and gas refrigerators.

2. Heaters with a capacity of up to 10 liters in rooms with a volume of at least ten times the gas flow.

3. Tanks for boiling clothes and washing machines with a gas flow rate of up to 2.5 m3 / h in rooms with a volume of at least ten times the gas flow rate.

4. Gas heaters installed against external walls with exhaust holes in the wall.

In all other cases (water heaters, boilers and larger washing machines, heating stoves, etc.), gas appliances must be connected to flues.

The supplying plant is obliged to install a fuse on the outlet pipe, which eliminates the possibility of condensation and the return of exhaust gases. The automatic hingeless valve of the Diermeier system with thermal control (Fig. 2) protects the premises from cooling through the gas duct and from disturbing the draft when the exhaust duct is used in mixed use (for exhaust gases from gas and solid fuel appliances); in addition, such a valve reduces the noise level. The content of carbon dioxide in the air of rooms designed for temporary stay of people (bathroom, kitchen, etc.) should not exceed 0.4%; in premises for long stays (common rooms and bedrooms) about 0.15%.

Gas ducts

It is allowed to connect no more than three firing points to a gas flue with a standard section of 135 x 135 mm in brick walls: gas flues with a cross section of more than 200 x200 mm should not be made; firing points operating on solid fuel and gas, if possible, should not be connected to the same gas duct. Gas ducts should be located in warm places to avoid the formation of condensate on cold walls. A windshield must be installed on the flue head. On flat roofs, flues must be at least 50 cm higher than the parapet (Fig. 3 and 4).

Gas consumption: for taking a shower lasting 5 minutes with a water heater with a capacity of 5 liters - 0.25 m3; for heating the room for 15 minutes - 0.25 m3.

Liquefied gas (non-toxic gases - propane, butane, etc.) is used for gas supply in remote areas.

Specification for liquefied gas (TRF 1969):

Places of installation of cylinders: small cylinders can be installed in any premises, except for sleeping rooms; large cylinders - outside the building in a locked metal cabinet or in a room with a separate external entrance; 1 kg of liquefied gas (3 m3 of natural gas) gives about 5000 kcal.

Liquefied gas costs almost 1/3 more than gas from the city network.

The pipe diameters for liquefied gas are much smaller than the diameters of city gas pipes due to the increased pressure.