Marching stairs, platforms and steel railings. Specifications. Requirements for metal stairs according to GOST and SNP GOST stairs, marching platforms and steel railings

STATE STANDARD OF THE UNION OF THE SSR

STAIRS,
GROUNDS AND FENCES
STEEL

TECHNICAL CONDITIONS

GOST 23120-78

USSR STATE COMMITTEE
CONSTRUCTION

Moscow

DEVELOPED AND INTRODUCED by the Order of the Red Banner of Labor by the Central Research and Design Institute building metal structures(TsNIIprojectstalkonstruktsiya) Gosstroy of the USSR

All-Union Scientific Research and Design Institute (VNIKTIstalkonstruktsiya) of the USSR Ministry of Installation and Special Construction

All-Union State Design Institute for Industrialization installation work(Gipromontazhindustry) Minmontazhspecial construction of the USSR

PERFORMERS

V. M. Laptev(topic leader) L. A. Peskova, S. I. Bochkova, A. F. Gai, L. M. Dudilovsky, B. A. Shtepa

APPROVED AND INTRODUCED BY Decree State Committee Council of Ministers of the USSR for Construction of April 28, 1978 No. 71

STATE STANDARD OF THE UNION OF THE SSR

By the Decree of the State Committee of the Council of Ministers of the USSR for Construction of April 28, 1978 No. 71, the validity period was established

from 01.01.1979

until 01.01.1984

This standard applies to steel marching stairs, platforms and fences to them, used in industrial buildings and structures erected and operated in areas with design temperature minus 65 °С and above.

The standard sets technical requirements on mid-flight stairs with an inclination of 45 and 60 °, rectangular transitional platforms and railings for them, made of cold-formed and hot-rolled profiles and designed for standard live loads of 200, 300 and 400 kgf / m 2.

Mid-flight stairs, platforms and railings for them must meet all the requirements of GOST 23118-78 and the requirements set forth in the relevant sections of this standard.

1. Main parameters and dimensions

1.1. The main parameters and dimensions of flights of stairs, rectangular platforms and railings to them must correspond to those indicated in Fig. 1 - 4 and in table. fourteen .

Flight of stairs

____________

* According to KMD drawings.

1 - kosour; 2 - step; 3 - support bar; 4 - support corner; 5 - rib

Heck. one

Table 1

Dimensions in mm

a	H	L	h	b	B	B1	B1
45°
	1200	1200
	1800	1800
	2400	2400
	3000	3000			1000
	3600	3600
	4200	4200
60°
	1200
	1800	1039
	2400	1386
	3000	1732
	3600	2078
	4200	2425
	4800	2771
	5400	3118
	6000	3464

Venues

______________

* According to KMD drawings.

1 - beam; 2 - edging element; 3 - flooring; 4 - rib

Heck. 2

Table 2

L n	900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000
B
B1

Stair railing

____________

* According to KMD drawings.

1 - rack; 2 - handrail 3 4 - onboard element

Heck. 3

Table 3

Dimensions in mm

a	H or	L or	h o	h	lo

Site fencing

____________

* According to KMD drawings.

1 - rack; 2 - handrail 3 - middle enclosing element; 4 - onboard element

Heck. 4

Table 4

H or	1000; 1200
L or	900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000
h o	140
h
lo	From 600 to 1300

Symbol examplegrades of a flight of stairs (ML) from a cold-formed profile (X) with stamped steps (Sh), at an angle of 45 ° and dimensions H= 6 dm and AT= 8 dm:

MLKhSh45-6.8 GOST 23120-78

The same, platforms (PM) from a cold-formed profile with corrugated flooring (F) and dimensionsL n= 9 dm and AT= 6 dm:

PMHF-9.6 GOST 23120-78

The same, the left railing (OHl) of the flight of stairs from a cold-formed profile without a side element, at an angle of 45 ° and dimensionsH or= 10 dm and H= 24 dm:

OGlMLH45-10.24 GOST 23120-78

The same, right guard (OGp) with onboard element (Eb):

OGpMLKhEb45-10.24 GOST 23120-78

The same, platform fencing made of cold-formed profile with side element and dimensionsH or= 10 dm and L or= 9 dm:

OGPMKhEb-10.9 GOST 23120-78

1.2. Depending on the operating conditions, the steps of mid-flight stairs and the decking of rectangular platforms should be made of two types:

1 - solid corrugated steel (F);

2 - lattice, executions:

Ш - from stamped elements;

R - from strips on the edge and round steel;

C - from stripes to an edge in one direction;

B - from expanded steel.

1.3. Types of steps of mid-flight stairs and decking in rectangular areas are shown in Fig. 5 .

1.4. The layout diagrams of mid-flight stairs, platforms and fences are given in the appendix.

Types of steps of mid-flight stairs and platform decks

Type 1. Solid (F)

Type 2. Latticed

Version W Version R

Version C Version B

Heck. 5

2. Technical requirements

2.1. The structures of flights of stairs, platforms and railings for them (hereinafter referred to as structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18-75 according to working drawings of KMD approved in the prescribed manner.

2.2. Structures should be made from carbon steel class C38 / 23 of the following grades according to GOST 380-71:

Vst3kp2 - for construction areas with an estimated outdoor temperature of minus 40 ° C and above;

Vst3Gps5 - the same, with an estimated outdoor temperature below minus 40° C to minus 65 °C incl.

2.3. Limit deviations linear dimensions of structures from nominal, deviations of the shape and location of surfaces from design are given in table. 5 .

2.4. Welded connections of the elements must be performed in a mechanized way. Allowed, in the absence of equipment for welding by mechanized methods, the application of manual welding.

2.5. Materials for welding must be taken in accordance with SNiP II -V.3-72.

2.6. For bolted connections bolts of normal accuracy must be used in accordance with GOST 7798-70 and in accordance with SNiP II -V.3-72.

2.7. Structures must be primed and painted. Priming and painting must comply with the fifth class of coverage in accordance with GOST 9.032-74.

2.8. Factory and assembly joints of fencing elements should not have sharp protrusions and edges.

Table 5

Nominal size and deviation name		Previous off stairs, landings, stair railings and landings	Sketch
Length L to; L p; L or	up to 1000 incl.	±1.6	Heck. fourteen
Width IN 1	St. 1000 to 1600 incl.	±2.0
Height N p; N l	St. 1600 to 2500 incl.	±2.5
	St. 2500 to 4000 incl.	±3.0
	St. 4000 to 8000 incl.	±4.0
The distance between the ribs in the stringers and beams of the platformslo		±2.0	Heck. 1 and 2
Distance between guard postslo		±2.0	Heck. 3 and 4
Inequality of diagonals (non-rectangularity), no more
Distance between hole centers within the same group A		±1.3
Distance between groups of holes A		±2.5
Non-straightness (d ) by lenghtL:
up to 1000 incl.
St. 1000 to 1600 incl.
» 1000 » 2500 »
» 2500 » 4000 »
» 4000 » 8000 »

3. Completeness

3.1. The structures must be supplied by the manufacturer as a complete set.

The kit should include:

flights of stairs, platforms and fences to them;

additional details for connecting structures;

bolts, nuts and washers (supplied in quantities of 10% more than those specified in the KMD drawings);

technical documentation in accordance with the requirements of GOST 23118-78.

4. Acceptance rules

4.1. Design to verify compliance with the requirements of this standard shall be accepted technical control manufacturer.

4.2. Control of deviations of the linear dimensions of structures (including the dimensions of sections of rolled profiles) from the nominal ones, deviations of the shape and location of the surfaces of parts from the design ones, the quality of welded joints and surface preparation for protective coatings must be carried out before priming the structures.

4.3. Acceptance of structures must be carried out in batches. The composition of the batch includes the same type of construction, made according to the same technology, from materials of the same quality.

The batch size is established by agreement between the manufacturer and the consumer.

4.4. With selective acceptance control Designs selected from the batch in the amount of 3 pcs. must be subjected to piece-by-piece control for compliance with the requirements established by this standard.

4.5. If during the inspection of the selected designs there is at least one design that does not comply with the requirements of this standard, a double number of designs should be selected from the same lot and re-tested. If, upon re-checking, there is at least one design that does not meet the requirements of this standard in one of the indicators, then this batch is rejected and sent for revision.

4.6. The consumer has the right to accept the structures, while applying the acceptance rules and control methods established by this standard.

5. Control methods

5.1. The control of deviations of the linear dimensions of structures from the nominal ones, deviations of the shape and location of surfaces from the design ones should be carried out by universal methods and means.

5.2. The quality control of the seams of welded joints and the dimensions of their sections should be carried out in accordance with SNiP III-18-75.

6. Marking, packaging, transportation and storage

6.1. Fabricated designs must be marked.

6.2. Structures of flights of stairs and landings must be transported element by element or in packages consisting of several elements. Fencing structures should only be transported in packages.

6.3. The method of connecting structural elements into packages should exclude their mutual displacement and damage during transportation and storage.

6.4. A tag is attached to each package or to the structure, on which the following markings should be applied:

Order number;

number of the KMD drawing according to which the structure is made.

6.5. On each structural element, a symbol of the brand of the element must be applied (without a standard designation, see clause 1.1).

6.6. Markings must be applied with indelible paint on the wall of the stringer of the flight of stairs with right side along the rise, on the wall of the platform beam and on the upper edge of the railing.

6.7. Structural fittings must be supplied with the structures. By agreement with the customer, it is allowed to supply connecting parts separately from the structures, in which case they must be packed in wooden boxes according to GOST 2991-76.

6.8. The mass of the package should not exceed 3 tons.

6.9. Structures must be transported and stored in stacks in horizontal position resting on wooden linings and gaskets. Linings must be at least 50 mm thick and at least 100 mm wide. Gaskets must be at least 20 mm thick and at least 100 mm wide.

The height of the stack should be no more than 1.5 m - for fences and 2.0 m - for marches and platforms.

7. Installation instructions

7.1. Installation of structures must be carried out in accordance with the requirements of GOST 23118-78 and SNiP III-18-75.

7.2. Installation of structures should ensure their design position, excluding the formation of a reverse slope of steps of more than 1 °.

8. Manufacturer's Warranties

8.1. The manufacturer shall ensure that structures comply with the requirements of this standard subject to the conditions of transportation, storage and installation established by this standard.

Appendix
Reference

Layout schemes of mid-flight stairs

N e- floor height or distance between floors; H, L, B, L p, H or- nominal dimensions of ladder elements; a - the angle of the stairs ; b- step width; h- step height

In schemes 2 - 5, the nodes circled are made rigid for welding with the help of additional elements.

1. Main parameters and dimensions .. 2

2. Technical requirements . 6

3. Completeness . 8

4. Acceptance rules . 8

5. Control methods . 8

6. Marking, packaging, transportation and storage . 8

7. Installation instructions . 9

8. Manufacturer's Warranties . 9

Application Ladder layout diagrams . 10

GOST 23120-78

Group Zh34

STATE STANDARD OF THE UNION OF THE SSR

STAIRCASES, PLATFORM AND STEEL FENCES

Specifications

Steel flights of steps, stair landings and railings.
Specifications

Introduction date 1979-01-01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED the Order of the Red Banner of Labor by the Central Research and Design Institute of Building Metal Structures (TsNIIprojectstalkonstruktsiya) of the USSR State Construction Committee

All-Union Scientific Research and Design and Technology Institute (VNIKTIstalkonstruktsiya) of the USSR MinmontazhSpetsstroy

All-Union State Design Institute for the Industrialization of Installation Works (Gipromontazhindustriya) of the USSR Ministry of Installation and Special Construction

DEVELOPERS

V.M. Laptev (theme leader), L.A. Peskova, S.I. Bochkova, A.F. Gai, L.M. Dudilovsky, B.A. Shtepa

2. APPROVED AND PUT INTO EFFECT by the Decree of the State Committee of the Council of Ministers of the USSR for Construction of April 28, 1978 No. 71

3. INTRODUCED FOR THE FIRST TIME

4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS


	Item number
GOST 9.032-74
GOST 380-88
GOST 2991-85
GOST 7798-70
	Introduction, 3.1, 7.1
SNiP II-V.3-72

5. REPUBLICATION. May 1992

6. Decree of the USSR State Committee for Construction Affairs No. 354 dated February 29, 1984 lifted the limitation on the validity period

This standard applies to steel mid-flight stairs, platforms and railings for them, used in industrial buildings and structures erected and operated in areas with a design temperature of minus 65 ° C and above.

The standard establishes technical requirements for mid-flight stairs with an inclination of 45 and 60 °, rectangular transition platforms and railings for them, made of cold-formed and hot-rolled profiles and designed for standard live loads of 200, 300 and 400.

Mid-flight stairs, platforms and railings for them must meet all the requirements of GOST 23118 and the requirements set forth in the relevant sections of this standard.

1. Main parameters and dimensions

1.1. The main parameters and dimensions of flights of stairs, rectangular platforms and fences for them must correspond to those indicated in Fig. 1-4 and in Table 1-4.

An example of a symbol for the brand of a flight of stairs (ML) from a cold-formed profile (X) with stamped steps (Ш), at an angle of 45 ° and dimensions of 6 dm and 8 dm:

MLKhSh45-6.8 GOST 23120-78

The same, platforms (PM) from a cold-formed profile with corrugated flooring (Ф) and dimensions = 9 dm and 6 dm:

PMHF-9.6 GOST 23120-78

The same, the left railing (OGl) of the flight of stairs from a cold-formed profile without a side element, at an angle of 45 ° and dimensions = 10 dm and 24 dm;

OGlMLH45-10.24 GOST 23120-78

The same, right guard (OGp) with onboard element (Eb):

OGpMLKhEb45-10.24 GOST 23120-78

The same, platform fencing made of a cold-formed profile with a side element and dimensions = 10 dm and = 9 dm:

OGPMKhEb-10.9 GOST 23120-78

Flight of stairs

1 - kosour;

2 - step;

3 - support bar; 4 - reference corner; 5 - rib

Damn.1

Venues

1 - beam; 2 - edging element; 3 - flooring; 4 - rib

___________________
* According to KMD drawings.

1.2. Depending on the operating conditions, the steps of mid-flight stairs and the decking of rectangular platforms should be made of two types:

1 - solid corrugated steel (F);

2 - lattice, executions:

Ш - from stamped elements;

R - from strips on the edge and round steel;

C - from stripes to an edge in one direction;

B - from expanded steel.

1.3. The types of steps of mid-flight stairs and decking in rectangular areas are shown in Figure 5.

1.4. The layout diagrams of mid-flight stairs, platforms and fences are given in the appendix.

Table 1

Dimensions in mm

table 2



	600; 800; 1000

2. Technical requirements

2.1. The structures of flights of stairs, platforms and railings for them (hereinafter referred to as structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18 according to working drawings of KMD approved in the prescribed manner.

2.2. Structures should be made of carbon steel of class C38 / 23 of the following grades in accordance with GOST 380:

St3kp - for construction areas with an estimated outdoor temperature of minus 40 ° C and above;

St3Gps - the same, with an estimated outdoor air temperature below minus 40 to minus 65 ° C inclusive.

2.3. Limit deviations of the linear dimensions of structures from the nominal ones, deviations of the shape and location of surfaces from the design ones are given in Table 5.

Stair railing

1 - rack;

2 - handrail, 3 - middle enclosing element; 4 - side element

___________________
* According to KMD drawings.

Site fencing

___________________
* According to KMD drawings.

Table 3

Dimensions in mm

2.4. Welded connections of the elements must be performed in a mechanized way. It is allowed, in the absence of equipment for welding by mechanized methods, the use of manual welding.

2.5. Materials for welding should be taken in accordance with SNiP II-B.3.

Table 4


	1000; 1200
	900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000


	From 600 to 1300

Types of steps of mid-flight stairs and platform decks

Type 1. Solid (F)

Type 2. Latticed

Version W Version R

Version C Version B

Damn.5

2.6. For bolted connections, bolts of normal accuracy in accordance with GOST 7798 and in accordance with SNiP II-B.3 should be used.

2.7. Structures must be primed and painted. Priming and painting must comply with the V class of coverage in accordance with GOST 9.032.

2.8. Factory and assembly joints of fencing elements should not have sharp protrusions and edges.

Table 5


Nominal size and deviation name	Previous off stairs, landings, stair railings and landings
1. Length; ; up to 1000 incl.
2. Width St. 1000 to 1600 incl.		Devil 1-4
3. Height :
St. 1600 to 2500 incl.


4. The distance between the ribs in the stringers and beams of the platforms		Damn 1 and 2
5. Distance between fence posts		Damn 3 and 4
6. Inequality of diagonals (non-rectangularity), no more
7. The distance between the centers of the holes within the same group A
8. Distance between groups of holes A
9. Deviation from straightness by lenght :
up to 1000 incl.
St. 1000 to 1600 incl.

3. Completeness

3.1. The structures must be supplied by the manufacturer as a complete set.

The kit should include:

flights of stairs, platforms and fences to them;

additional details for connecting structures;

bolts, nuts and washers (supplied in quantities 10% more than those specified in the KMD drawings);

technical documentation in accordance with the requirements of GOST 23118.

4. Acceptance rules

4.1. The design for verification of their compliance with the requirements of this standard shall be accepted by the technical control of the manufacturer.

4.2. The control of deviations of the linear dimensions of structures (including the dimensions of sections of rolled profiles) from the nominal ones, deviations of the shape and location of the surfaces of parts from the design ones, the quality of welded joints and surface preparation for protective coatings should be carried out before priming the structures.

4.4. During selective acceptance control, the designs selected from the batch in the amount of 3 pcs. must be subjected to piece-by-piece control for compliance with the requirements established by this standard.

4.5. If during the inspection of the selected designs there is at least one design that does not comply with the requirements of this standard, a double number of designs should be selected from the same lot and re-verified. If, upon re-checking, there is at least one design that does not meet the requirements of this standard in one of the indicators, then this batch is rejected and sent for revision.

4.6. The consumer has the right to accept the structures, while applying the acceptance rules and control methods established by this standard.

5. Control methods

5.2. The quality control of the seams of welded joints and the dimensions of their sections should be carried out in accordance with SNiP III-18.

6. Marking, packaging, transportation and storage

6.1. Fabricated designs must be marked.

6.2. Structures of flights of stairs and landings must be transported element by element or in packages consisting of several elements. Fencing structures should only be transported in packages.

6.3. The method of connecting structural elements into packages should exclude their mutual displacement and damage during transportation and storage.

6.4. A tag is attached to each package or to the structure, on which the following markings should be applied:

Order number;

number of the KMD drawing according to which the structure is made.

6.5. Each structural element must be marked with a symbol of the element brand (without a standard designation, see clause 1.1).

6.6. Markings should be applied with indelible paint on the wall of the stringer of the flight of stairs on the right side along the ascent, on the wall of the landing beam and on the upper edge of the railing.

6.8. The mass of the package should not exceed 3 tons.

6.9. Structures should be transported and stored in stacks in a horizontal position supported by wooden linings and pads. Linings must be at least 50 mm thick and at least 100 mm wide. Gaskets must be at least 20 mm thick and at least 100 mm wide.

The height of the stack should be no more than 1.5 m - for fences and 2.0 m - for marches and platforms.

7. Installation instructions

7.1. Installation of structures must be carried out in accordance with the requirements of GOST 23118 and SNiP III-18.

7.2. Installation of structures should ensure their design position, excluding the formation of a reverse slope of steps of more than 1 °.

8. Manufacturer's Warranties

8.1. The manufacturer shall ensure that structures comply with the requirements of this standard subject to the conditions of transportation, storage and installation established by this standard.

Application (reference). Layout schemes of mid-flight stairs

Appendix
Reference

Floor height or distance between floors;
, , - nominal dimensions of the elements of stairs;
- the angle of inclination of the stairs; - step width; - step height

In schemes 2-5, the nodes circled are made rigid for welding with the help of additional elements.

The text of the document is verified by:
official publication
Ministry of Construction of Russia -
M.: Publishing house of standards, 1992

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE

STANDARD

Specifications

Official edition

SSH1LCHNM!fP[M

GOST 23120-2016

Foreword

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established in GOST 1.0-2015 “Interstate standardization system. Basic Provisions” and GOST 1.2-2015 “Interstate Standardization System. Interstate standards. rules and recommendations for interstate standardization. Rules for the development, adoption, updating and cancellation "

About the standard

1 DEVELOPED by the Closed Joint-Stock Company Central Order of the Red Banner of Labor Research and Design Institute of Building Metal Structures. N.P. Melnikov (CJSC TsNIIPSK named after N.P. Melnikov)

2 INTRODUCED technical committee according to standardization TC 465 "Construction"

3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Minutes of June 28, 2016 N9 49)

4 Order federal agency on technical regulation and metrology dated September 26, 2016 No. 1213-st interstate standard GOST 23120-2016 was put into effect as a national standard Russian Federation since March 1, 2017

5 INSTEAD OF GOST 23120-78

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 placed in information system common use- on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet ()

In Russian federation present standard may not be reproduced in whole or in part. replicated and distributed as official publication without the permission of the Federal Agency for Technical Regulation and Metrology

GOST 23120-2016

1 area of use............................................... ...................one

3 Terms and definitions .......................................................... .................2

4 Symbols and abbreviations.................................................... ..............2

5 Basic parameters and dimensions .................................................. ...........2

6 Technical requirements............................................................... ................5

7 Rules for acceptance ............................................... ......................7

8 Methods of control ............................................... ......................7

9 Transport and storage............................................................... ...........eight

10 Installation instructions............................................................... ...................eight

11 Manufacturer's Warranty............................................................... .................eight

Annex A (informative) Ladder layout diagrams .......................................................... 9

GOST 23120-2016

INTERSTATE STANDARD

STAIRCASES, PLATFORM AND STEEL FENCES

Specifications

Steel flights of steps, stair landings and railings. Specifications

Introduction date - 2017-03-01

1 area of use

This standard applies to steel mid-flight stairs, platforms and railings to them. used in industrial buildings and structures erected and operated at a temperature not higher than plus 100 ° C and not lower than minus 60 ° C.

This standard establishes technical requirements for mid-flight stairs with an angle of inclination* of 45° and 60°. rectangular transitional platforms and protections to them. made of cold-formed and hot-rolled profiles and designed for the action of standard temporary loads of 200. 300 and 400 kgf / m 2.

2 Normative references

8 of this standard, normative references to the following interstate standards are used:

GOST 2.321-84 one system design documentation. Notation letter GOST 9.032-74 Unified system of protection against corrosion and aging. Paint coatings. Groups, technical requirements and designations

GOST 21.001-2013 System project documentation for construction. General provisions GOST 21.501-2011 System of project documentation for construction. Execution rules working documentation architectural and constructive solutions

GOST 535-2005 Sectioned and shaped rolled products made of carbon steel of ordinary quality. General specifications

GOST 1759.0-87 Bolts, screws, studs and nuts. Specifications GOST 1759.5-87 (ISO 898-2-80)* Nuts. Mechanical properties and test methods GOST 2991-85 Non-separable plank boxes for loads weighing up to 500 No. General technical conditions

GOST 5915-70 Hexagon nuts of accuracy class B. Design and dimensions

GOST 7798-70** Hexagon head bolts of accuracy class B. Design and dimensions

GOST 11371-78 Washers. Specifications

GOST 14637-89 Carbon steel plate of ordinary quality. Specifications

GOST 15150-69 Machinery, instruments and other technical products. Versions for different climatic regions. Categories, operating conditions, storage and transportation in terms of the impact of climatic factors external environment

* In the Russian Federation, GOST R ISO 898-2-2013 “Mechanical properties of fasteners made of carbon and alloy steels. Part 2. Nuts by establishing strength classes with coarse and fine thread pitch.

“ In the Russian Federation, GOST R ISO 4014-2013 “Hexagon head bolts. Accuracy classes A and B.

Official edition

GOST 23120-2016

GOST 16123-82* Washers. General specifications

GOST 23118-2012 Steel building structures. General specifications

GOST 26047-2016 Steel building structures. Conventions(brands)

GOST 26663-85 Transport packages. Formation using packaging tools. General technical requirements

GOST 27772-88 Rolled products for building structures. General specifications

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 the annual information index "National Standards", which was published as of January 1 of the current year, and according to issues of the monthly information index "National Standards" for this 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

This standard uses the terms according to GOST 21.001, GOST 21.501 and in accordance with the current regulatory documents **.

4 Symbols and abbreviations

This standard uses the terms and letter designations according to GOST 2.321. GOST 26047, as well as the following abbreviations:

KMD - detail drawings of metal structures:

POS - construction organization project:

PPR - a project for the production of works (installation).

5 Main parameters and dimensions

5.1 The main parameters and dimensions of flights of stairs, rectangular platforms and railings to them must correspond to those indicated in Figures 1-4 and given in Tables 1-4.

* According to KMD drawings. ’ According to KMD drawings.

Picture 1 - Flight of stairs(ML) Figure 2 - Playgrounds<ПМ)

"The Russian Federation also has GOST R ISO 4759-3-2009 "Fastening products. Tolerances. Part 3. Flat round washers for bolts, screws and nuts. Accuracy classes A and C" in terms of washer tolerances.

"* In the Russian Federation, GOST R 21.1101-2013 "The system of design documentation for construction. Basic requirements for design and working documentation" is also in force.

GOST 23120-2016

I - stand. 2 - handrail: 3 - middle enclosing element, 4 - side element

post: 2 - handrail: 3 - middle enclosing element: 4 - side element

* According to KMD drawings.

"Gk> KMD drawings.

Figure 3 - Fencing of the flight of stairs (OGM)

Figure 4 - Site fencing (OSF)

Table 1 - Parameters and dimensions of flights of stairs

In millimeters


















Note -	In mid-flight stairs with an angle of inclination of 60 *	distance h (see figure 1) must
be no more than 250 mm for lifting into the cabin of an overhead crane.

GOST 23120-2016

Table 2 - Dimensions of rectangular areas

In millimeters

Table 4 - Dimensions of site fences

In millimeters


	900. 1200.1500. 1800. 2100. 2400. 3000. 3600.4200. 4800. 5400. 6000


	From 600 to 1300

An example of a symbol for the brand of a flight of stairs (ML) from a cold-formed profile (X) with stamped steps (Ш), at an angle of 45 * and dimensions H = 6dmiB = 8 dm:

MLKhSh45-6.8 GOST 23120-2016

Same. platforms (PM) from a cold-formed profile with corrugated flooring (F) and dimensions L n = 9 dm and B - 8 dm:

PMHF-9.8 GOST 23120-2016

Same. the left railing (OGl) of a flight of stairs made of a cold-formed profile without a side element, at an angle of 45 * and dimensions H og - 10 dm and H - 24 dm;

OGpMLH45" 10.24 GOST 23120-2016

Same. right railing (OGl) with onboard element (EB):

OGPMLHE645-Yu.24 GOST 23120-2016

Same. fencing of the site from a cold-formed profile (X) with an onboard element (Eb) and dimensions H og - 10 dm and L or = 9 dm:

OGPMKhE6- f 0.9 GOST 23120-2016

5.2 Depending on the operating conditions, the steps of mid-flight stairs and decking of rectangular platforms should be made of two types:

1 - solid corrugated steel (F);

2 - lattice, executions:

Ш - from stamped elements:

R - from strips on the edge and round steel;

C - from stripes to an edge in one direction:

B - from expanded steel.

5.3 Types of steps of mid-flight stairs and decking in rectangular areas are shown in Figure 5.

GOST 23120-2016

Type 1. Solid (F)

Type 2. Latticed

Version W Version R

Version C Version B

Figure 5 - Types of steps of mid-flight stairs and decking of rectangular platforms

5.4 Layout diagrams of mid-flight stairs, platforms and fences are given in Appendix A.

6 Technical requirements

6.1 The structures of flights of stairs, landings and railings for them (hereinafter referred to as structures) should be manufactured in accordance with the requirements of GOST 23118 and this standard, according to working detail drawings (KMD). approved in the prescribed manner.

6.2 Structures should be made of carbon steel of the following grades given in Table 5.

Table 5

6.3 Limit deviations of the linear dimensions of structures from the nominal ones, deviations of the shape and location of surfaces from the design ones are given in Table 6.

GOST 23120-2016

Table 6

Dimensions in mm

Nominal size and deviation name	Limit deviations of a flight of stairs, landings, railings of a flight of stairs and landings
1 Lengths C. i„, i w up to 1000 incl.		Figures 1-4
2 Width B, se. 1000 to 1600 incl.
3 Heights N p. N p se. 1600 to 2500 incl. » 2500 » 4000 » » 4000 » 8000 »
4 The distance between the ribs in the stringers and beams of the platforms		Figures 1 and 2
5 Distance between guard posts		Figures 3 and 4
6 Equality of diagonals (rectangularity), no more
7 Distance between hole centers within the same group A
8 Distance between groups of holes A 6		4 G 4<§- -<
9 Deviation from straightness (b) along the length i: up to 1000 keys see. 1000 to 1600 incl. » 1000 » 2500 » » 2500 » 4000 > » 4000 » 8000 »

6.4 Welded joints of the elements should be performed mechanically. Permitted* yes. in the absence of equipment for welding by mechanized methods, the use of manual welding.

6.5 Materials for welding should be taken in accordance with the current regulatory documents *.

6.6 For bolted connections, bolts of normal accuracy in accordance with GOST 7798 and GOST 1759.0 should be used. nuts according to GOST 5915 and GOST 1759.5. washers in accordance with GOST 11371 and GOST 18123 and in accordance with current regulatory documents *.

6.7 Structures must be primed and painted. Priming and painting must comply with coating class V according to GOST 9.032.

6.8 Factory and assembly joints of fencing elements should not have sharp protrusions and edges.

6.9 Completeness

The structures must be supplied by the manufacturer as a complete set.

The kit should include:

* flights of stairs, platforms and fences to them;

On the territory of the Russian Federation, SP 16.13330.2011 "SNiP 11-23-81 Steel structures" is in force.

GOST 23120-2016

Additional details for connecting structures;

Bolts, nuts and washers (supplied 10% more than the specified number in the KMD drawings):

Technical documentation in accordance with the requirements of GOST 23118.

6.10 Marking

6.10.1 Prepared structures must be marked.

6.10.2 Attach a tag to each package or structure, which must bear the following markings:

Name or trademark of the manufacturer;

Order number;

Element mark;

KMD drawing number. on which the design is made;

Date of manufacture:

Stamp of acceptance by technical control.

6.10.3 Each structural element shall be marked with a symbol of the element brand (without standard designation, see 5.1).

6.10.4 Markings should be applied with indelible paint on the wall of the stringer of the flight of stairs on the right side along the ascent, on the wall of the platform beam and on the upper edge of the railing.

6.11 Packaging

6.11.1 Packing of structural elements in packages is carried out in accordance with the requirements of GOST 26663. It should exclude their mutual displacement and damage during their loading, unloading, transportation and storage.

6.11.2 The mass of the package must not exceed 3 tons.

6.11.3 Structural fittings and fasteners should be supplied with the structures. By agreement with the customer, it is allowed to supply connecting parts separately from the structures, in which case they must be packed in wooden boxes in accordance with GOST 2991.

7 Acceptance rules

7.1 Designs for verification of their compliance with the requirements of this standard shall be accepted by the technical control of the manufacturer.

7.2 Control of deviations of the linear dimensions of structures (including the dimensions of sections of rolled profiles) from the nominal, deviations of the shape and location of the surfaces of parts from the design ones, the quality of welded joints and surface preparation for protective coatings should be carried out before priming the structures.

7.3 Acceptance of structures should be carried out in batches. The composition of the party includes the same type of design. made using the same technology, from materials of the same quality.

The batch size is set by agreement between the manufacturer and the consumer.

7.4 During selective acceptance control, three designs are selected from the lot, which must be subjected to piece-by-piece control for compliance with the requirements established by this standard.

7.5 If during the verification of the selected designs there is at least one design that does not meet the requirements of this standard, double the number of designs from the same lot should be selected and re-checked. If, upon re-checking, there is at least one design that does not meet the requirements of this standard in one of the indicators, then this batch is rejected and sent for revision.

7.6 The consumer has the right to carry out the acceptance of structures, while applying the acceptance rules and control methods established by this standard.

8 Control methods

8.1 Control of deviations of the linear dimensions of structures from the nominal ones, deviations of the shape and location of surfaces from the design ones should be carried out by universal methods and means.

GOST 23120-2016

8.2 The quality control of the seams of welded joints and the dimensions of their sections should be carried out in accordance with the requirements of GOST 23118.

9 Transport and storage

9.1 Structures of flights of stairs and landings should be transported element by element or in packages consisting of several elements. Fencing structures should only be transported in packages.

9.2 Structures should be transported and stored in stacks in a horizontal position supported by wooden linings and pads. Linings must be at least 50 mm thick and at least 100 mm wide. Gaskets must be at least 20 mm thick and at least 100 mm wide.

The height of the stack should be no more than 1.5 m for railings and 2.0 m for flights of stairs and landings.

9.3 The conditions for transportation and storage of structures should be established depending on the climatic factors of the external environment in accordance with GOST 15150.

10 Installation instructions

10.1 Installation of structures is carried out in accordance with the requirements of the regulatory documents "for installation and the rules established by the POS and PPR.

10.2 Installation of structures should ensure their design position, excluding the formation of a reverse slope of steps of more than 1 e.

11 Manufacturer's warranties

The manufacturer shall ensure that structures comply with the requirements of this standard subject to the conditions of transportation, storage and installation established by this standard.

GOST 23120-2016

Annex A (informative)

Layout schemes of mid-flight stairs

H a - the height of the attack or the distance between the overlaps. I. I. B. 1 p N m - nominal dimensions of the elements of the stairs: a - angle of inclination of the stairs: b - step width: k - step height

Figure A.1

In schemes 2-5 of Figure A.1, the nodes marked with a circle are made rigid for welding with the help of additional elements.

GOST 23120-2016

UDC 669.714.026.22:006.354 MKS 91.060.30

Key words: steel mid-flight stairs, platforms, railings, steps, dimensions, technical requirements, acceptance rules, control methods, transportation, storage, installation instructions. manufacturer's warranty

Editor S.I. Bochkova Technical editor V.N. Prusakova Proofreader M.V. Buchnaya Computer layout E.E. Krugova

Handed over and set 09/27/2016. Signed and started on 10/11/2016. Format 60 «64*/$, Headset Arial. Uel. oven 1.80. Uch.-ed. l. 1.73. Circulation 33 em. Behind". 2485.

Prepared on the basis of the electronic version provided by the developer of the standard.

Published and printed by FSUE STANDARTINFORM. 12399S Moscow. Garnet lane.. 4.

The handrail structure must withstand a horizontal load of 0.9 kN applied at the top of the railing; the height of the handrail should be 1 m;

The design of the ladder must withstand a concentrated load of 4.5 kN;

The maximum distance between the fence posts (along the handrail) should be 1 m, or more than 1 m (confirm by calculation);

Ring ladders should be fixed on the tank wall, and the lower march should not reach the blind area by 100-200 mm;

With a total staircase height of more than 9 m, the staircase design must include intermediate platforms, the difference between the vertical marks of which should not exceed 6 m.

5.1.9.2 Platforms, crossings and barriers must be carried out taking into account the following requirements:

The fencing must be GOST 25772 and be installed along the entire perimeter of the fixed roof, as well as on the outer (from the center of the tank) side of the platforms located on the roof;

Crossings and platforms must be equipped with railings 1.25 m high from the flooring level;

The minimum width of platforms and transitions at the flooring level is 700 mm;

The maximum distance between the fence posts is 2.5 m;

The minimum height of the lower side railing is 150 mm;

The distance between the handrail, intermediate strips and the lower side strip should be no more than 400 mm;

The design of platforms and transitions must withstand a concentrated load of 4.5 kN (on the platform 100 × 100 mm);

The guardrail must withstand a load of 0.9 kN applied in any direction at any point on the handrail.

State standard of the USSR GOST 23120-78 "Steel stairs, platforms and railings. Specifications" (approved by the Decree of the USSR State Construction Committee of April 28, 1978 N 71)

Steel flights of steps, stait landinqs and railing.

1. Main parameters and dimensions

2. Technical requirements

3. Completeness

4. Acceptance rules

5. Control methods

6. Marking, packaging, transportation and storage

7. Installation instructions

8. Manufacturer's Warranties

Appendix. Layout schemes of mid-flight stairs

This standard applies to steel mid-flight stairs, platforms and railings for them, used in industrial buildings and structures erected and operated in areas with a design temperature of minus 65 ° C and above.

The standard establishes technical requirements for mid-flight stairs with an inclination of 45° and 60°, rectangular transition platforms and railings for them, made of cold-formed and hot-rolled profiles and designed for standard live loads of 200, 300 and 400 kgf/m2.

Mid-flight stairs, platforms and railings for them must meet all the requirements of GOST 23118-78 and the requirements set forth in the relevant sections of this standard.

Instead of GOST 23118-78, by the Decree of the Gosstroy of Russia dated October 19, 1999 N 39, from January 1, 2001, GOST 23118-99 was put into effect

1. Main parameters and dimensions

1.1. The main parameters and dimensions of flights of stairs, rectangular platforms and railings to them must correspond to those indicated in Fig. 1-4 and in tab. 1-4 .

"Damn. 1. Flight of stairs"

Table 1

Dimensions in mm

┌───────┬────────┬─────────┬────────┬────────┬────────┬────────┬────────┐

│ alpha │ H │ L │ h │ b │ B │ B_1 │ b_1 │

│ │ 600 │ 600 │ │ │ │ │ │

│ │ 1200 │ 1200 │ │ │ │ │ │

│ │ 1800 │ 1800 │ │ │ 600 │ 500 │ 7 │

│ 45° │ 2400 │ 2400 │ 200 │ 200 │ 800 │ 700 │ 10 │

│ │ 3000 │ 3000 │ │ │ 1000 │ 900 │ │

│ │ 3600 │ 3600 │ │ │ │ │ │

│ │ 4200 │ 4200 │ │ │ │ │ │

├───────┼────────┼─────────┼────────┼────────┼────────┼────────┼────────┤

│ │ 600 │ 345 │ │ │ │ │ │

│ │ 1200 │ 693 │ │ │ │ │ │

│ │ 1800 │ 1039 │ │ │ │ │ │

│ │ 2400 │ 1386 │ │ │ │ │ │

│ │ 3000 │ 1732 │ │ │ 600 │ 500 │ 5 │

│ 60° │ 3600 │ 2078 │ 300 │ 200 │ 800 │ 700 │ │

│ │ 4200 │ 2425 │ │ │ │ │ │

│ │ 4800 │ 2771 │ │ │ │ │ │

│ │ 5400 │ 3118 │ │ │ │ │ │

│ │ 6000 │ 3464 │ │ │ │ │ │

└───────┴────────┴─────────┴────────┴────────┴────────┴────────┴────────┘

"Damn. 2. Playground"

table 2

│ L_n │ 900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; │

│ │ 5400; 6000 │

│ V │ 600; 800; 1000│

├───────┼───────────────────────────────────────────────────────────────┤

│ B_1 │ 500; 700; 900│

"Damn. 3. Fencing of the flight of stairs"

Table 3

Dimensions in mm

┌──────────┬───────────┬────────────┬───────────┬───────────┬───────────┐

│ alpha │ H_og │ L_og │ h_0 │ h │ l_0 │

├──────────┼───────────┼────────────┼───────────┼───────────┼───────────┤

│ 45° │ 1000 │ From 1697 │ │ │ From 479 │

│ │ 1200 │ up to 5940 │ 140 │ 15 │ up to 790 │

├──────────┼───────────┼────────────┤ │ ├───────────┤

│ 60° │ 1000 │ From 1385 │ │ │ From 136 │

│ │ 1200 │ up to 6930 │ │ │ up to 700 │

└──────────┴───────────┴────────────┴───────────┴───────────┴───────────┘

"Damn. 4. Fencing sites"

Table 4

┌───────┬───────────────────────────────────────────────────────────────┐

│ H_og │ 1000; 1200│

│ L_og │ 900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; │

│ │ 5400; 6000 │

│ h_0 │ 140 │

│ h │ 5 │

│ l_0 │ From 600 to 1300 │

└───────┴───────────────────────────────────────────────────────────────┘

GOST 23120-78

Group Zh34

STATE STANDARD OF THE UNION OF THE SSR

STAIRCASES, PLATFORM AND STEEL FENCES

Specifications

Steel flights of steps, stair landings and railings.

Specifications

Introduction date 1979-01-01

INFORMATION DATA

All-Union Scientific Research and Design and Technology Institute (VNIKTIstalkonstruktsiya) of the USSR MinmontazhSpetsstroy

All-Union State Design Institute for the Industrialization of Installation Works (Gipromontazhindustriya) of the USSR Ministry of Installation and Special Construction

DEVELOPERS

V.M. Laptev (theme leader), L.A. Peskova, S.I. Bochkova, A.F. Gai, L.M. Dudilovsky, B.A. Shtepa

2. APPROVED AND PUT INTO EFFECT by the Decree of the State Committee of the Council of Ministers of the USSR for Construction of April 28, 1978 No. 71

3. INTRODUCED FOR THE FIRST TIME

4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS


Designation of NTD,	Item number
GOST 9.032-74	2.7
GOST 380-88	2.2
GOST 2991-85	6.7
GOST 7798-70	2.6
GOST 23118-78	Introduction, 3.1, 7.1
SNiP II-V.3-72	2.6
SNiP III-18-75	2.1, 5.2, 7.1

5. REPUBLICATION. May 1992

6. Decree of the USSR State Committee for Construction Affairs No. 354 dated February 29, 1984 lifted the limitation on the validity period

The standard establishes technical requirements for mid-flight stairs with an inclination of 45 and 60 °, rectangular transition platforms and railings for them, made of cold-formed and hot-rolled profiles and designed for standard live loads of 200, 300 and 400.

Mid-flight stairs, platforms and railings for them must meet all the requirements of GOST 23118 and the requirements set forth in the relevant sections of this standard.

1. Main parameters and dimensions

1.1. The main parameters and dimensions of flights of stairs, rectangular platforms and fences for them must correspond to those indicated in Fig. 1-4 and in Table 1-4.

An example of a symbol for the brand of a flight of stairs (ML) from a cold-formed profile (X) with stamped steps (Ш), at an angle of 45 ° and dimensions of 6 dm and 8 dm:

MLKhSh45-6.8 GOST 23120-78

The same, platforms (PM) from a cold-formed profile with corrugated flooring (Ф) and dimensions = 9 dm and 6 dm:

PMHF-9.6 GOST 23120-78

The same, the left railing (OGl) of the flight of stairs from a cold-formed profile without a side element, at an angle of 45 ° and dimensions = 10 dm and 24 dm;

OGlMLH45-10.24 GOST 23120-78

The same, right guard (OGp) with onboard element (Eb):

OGpMLKhEb45-10.24 GOST 23120-78

The same, platform fencing made of a cold-formed profile with a side element and dimensions = 10 dm and = 9 dm:

OGPMKhEb-10.9 GOST 23120-78

Flight of stairs

1 - kosour; 2 - step; 3 - support bar; 4 - reference corner; 5 - rib

Damn.1

Venues

1 - beam; 2 - edging element; 3 - flooring; 4 - rib

Damn.2

___________________

* According to KMD drawings.

1.2. Depending on the operating conditions, the steps of mid-flight stairs and the decking of rectangular platforms should be made of two types:

1 - solid corrugated steel (F);

2 - lattice, executions:

Ш - from stamped elements;

R - from strips on the edge and round steel;

C - from stripes to an edge in one direction;

B - from expanded steel.

1.3. The types of steps of mid-flight stairs and decking in rectangular areas are shown in Figure 5.

1.4. The layout diagrams of mid-flight stairs, platforms and fences are given in the appendix.

Table 1

Dimensions in mm



	600	600
	1200	1200
45°	1800	1800			600	500
	2400	2400	200	200	800	700
	3000	3000			1000	900
	3600	3600
	4200	4200
	600	345
	1200	693
	1800	1039
	2400	1386			600	500
60°	3000	1732	300	200
	3600	2078			800	700
	4200	2425
	4800	2771
	5400	3118
	6000	3464

table 2



	600; 800; 1000
	500; 700; 900

2. Technical requirements

2.1. The structures of flights of stairs, platforms and railings for them (hereinafter referred to as structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18 according to working drawings of KMD approved in the prescribed manner.

2.2. Structures should be made of carbon steel of class C38 / 23 of the following grades in accordance with GOST 380:

St3kp - for construction areas with an estimated outdoor temperature of minus 40 ° C and above;

St3Gps - the same, with an estimated outdoor air temperature below minus 40 to minus 65 ° C inclusive.

2.3. Limit deviations of the linear dimensions of structures from the nominal ones, deviations of the shape and location of surfaces from the design ones are given in Table 5.

Stair railing

1 - rack; 2 - handrail, 3 - middle enclosing element; 4 - side element

Damn.3

___________________

* According to KMD drawings.

Site fencing

Damn.4

___________________

* According to KMD drawings.

Table 3

Dimensions in mm



45°	1000	From 1697		From 479
	1200	up to 5940		up to 790
			140
60°	1000	From 1385		From 136
	1200	up to 6930		up to 700

2.4. Welded connections of the elements must be performed in a mechanized way. It is allowed, in the absence of equipment for welding by mechanized methods, the use of manual welding.

2.5. Materials for welding should be taken in accordance with SNiP II-B.3.

Table 4


	1000; 1200
	900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000
	140

	From 600 to 1300

Types of steps of mid-flight stairs and platform decks

Type 1. Solid (F)

Type 2. Latticed

Version W Version R

Version C Version B

Damn.5

2.6. For bolted connections, bolts of normal accuracy in accordance with GOST 7798 and in accordance with SNiP II-B.3 should be used.

2.7. Structures must be primed and painted. Priming and painting must comply with the V class of coverage in accordance with GOST 9.032.

2.8. Factory and assembly joints of fencing elements should not have sharp protrusions and edges.

Table 5


Nominal size and deviation name	Previous off stairs, landings, stair railings and landings	Sketch
1. Length; ; up to 1000 incl.	±1.6
2. Width St. 1000 to 1600 incl.	±2.0	Devil 1-4
3. Height :
St. 1600 to 2500 incl.	±2.5
" 2500 " 4000 "	±3.0
" 4000 " 8000 "	±4.0
4. The distance between the ribs in the stringers and beams of the platforms	±2.0	Damn 1 and 2
5. Distance between fence posts	±2.0	Damn 3 and 4
6. Inequality of diagonals (non-rectangularity), no more	4,0
7. The distance between the centers of the holes within the same group A	±1.3
8. Distance between groups of holes A	±2.5
9. Deviation from straightness by lenght :
up to 1000 incl.	0,8
St. 1000 to 1600 incl.	1.3
" 1000 " 2500 "	2,0
" 2500 " 4000 "	3,0
" 4000 " 8000 "	5,0

3. Completeness

3.1. The structures must be supplied by the manufacturer as a complete set.

The kit should include:

flights of stairs, platforms and fences to them;

additional details for connecting structures;

bolts, nuts and washers (supplied in quantities 10% more than those specified in the KMD drawings);

technical documentation in accordance with the requirements of GOST 23118.

4. Acceptance rules

4.1. The design for verification of their compliance with the requirements of this standard shall be accepted by the technical control of the manufacturer.

The batch size is established by agreement between the manufacturer and the consumer.

4.5. If during the inspection of the selected designs there is at least one design that does not comply with the requirements of this standard, a double number of designs should be selected from the same lot and re-verified. If, upon re-checking, there is at least one design that does not meet the requirements of this standard in one of the indicators, then this batch is rejected and sent for revision.

4.6. The consumer has the right to accept the structures, while applying the acceptance rules and control methods established by this standard.

5. Control methods

5.2. The quality control of the seams of welded joints and the dimensions of their sections should be carried out in accordance with SNiP III-18.

6. Marking, packaging, transportation and storage

6.1. Fabricated designs must be marked.

6.2. Structures of flights of stairs and landings must be transported element by element or in packages consisting of several elements. Fencing structures should only be transported in packages.

6.3. The method of connecting structural elements into packages should exclude their mutual displacement and damage during transportation and storage.

6.4. A tag is attached to each package or to the structure, on which the following markings should be applied:

Order number;

number of the KMD drawing according to which the structure is made.

6.5. Each structural element must be marked with a symbol of the element brand (without a standard designation, see clause 1.1).

6.8. The mass of the package should not exceed 3 tons.

The height of the stack should be no more than 1.5 m - for fences and 2.0 m - for marches and platforms.

7. Installation instructions

7.1. Installation of structures must be carried out in accordance with the requirements of GOST 23118 and SNiP III-18.

7.2. Installation of structures should ensure their design position, excluding the formation of a reverse slope of steps of more than 1 °.

8. Manufacturer's Warranties

8.1. The manufacturer shall ensure that structures comply with the requirements of this standard subject to the conditions of transportation, storage and installation established by this standard.

Appendix

Reference

Layout schemes of mid-flight stairs

MGK "Informproekt"

Categories

Popular

Marching stairs, platforms and steel railings. Specifications. Requirements for metal stairs according to GOST and SNP GOST stairs, marching platforms and steel railings

1. Main parameters and dimensions

L

2. Technical requirements

3. Completeness

4. Acceptance rules

5. Control methods

6. Marking, packaging, transportation and storage

7. Installation instructions

8. Manufacturer's Warranties

AppendixReference

Layout schemes of mid-flight stairs

Flight of stairs

Venues

2. Technical requirements

Stair railing

Site fencing

Types of steps of mid-flight stairs and platform decks

Type 1. Solid (F)

Type 2. Latticed

3. Completeness

4. Acceptance rules

5. Control methods

6. Marking, packaging, transportation and storage

7. Installation instructions

8. Manufacturer's Warranties

Application (reference). Layout schemes of mid-flight stairs

Specifications

Foreword

1 area of ​​use

2 Normative references

3 Terms and definitions

4 Symbols and abbreviations

5 Main parameters and dimensions

6 Technical requirements

7 Acceptance rules

8 Control methods

9 Transport and storage

10 Installation instructions

11 Manufacturer's warranties

State standard of the USSR GOST 23120-78 "Steel stairs, platforms and railings. Specifications" (approved by the Decree of the USSR State Construction Committee of April 28, 1978 N 71)

1. Main parameters and dimensions

Appendix
Reference

1 area of use