Flight stairs, platforms and steel fences. Stairs Flights of stairs GOST 23120 78
GOST 23120-78
Group Zh34
STATE STANDARD OF THE USSR UNION
MARKING STAIRS, PLATFORMINGS AND STEEL FENCES
Specifications
Steel flights of steps, stair landings and railings.
Specifications
Date of introduction 1979-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED to the Order of the Red Banner of Labor by the Central Research and Design Institute of Building Metal Structures (TsNIIproektstalkonstruktsiya) of the USSR State Construction Committee
All-Union Scientific Research and Design-Technological Institute (VNIKTIstalkonstruktsiya) Ministry of Installation and Special Construction of the USSR
All-Union State Design Institute for Industrialization installation work(Gipromontazhindustriya) Ministry of Montazhspetsstroy USSR
DEVELOPERS
V.M. Laptev (topic leader), L.A. Peskova, S.I. Bochkova, A.F. Gai, L.M. Dudilovsky, B.A. Shtepa
2. APPROVED AND ENTERED INTO EFFECT by the Resolution State Committee Council of Ministers of the USSR for Construction Affairs dated April 28, 1978 No. 71
3. INTRODUCED FOR THE FIRST TIME
4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
Item number |
|
GOST 9.032-74 | |
GOST 380-88 | |
GOST 2991-85 | |
GOST 7798-70 | |
Introductory part, 3.1, 7.1 |
|
SNiP II-V.3-72 | |
5. REPUBLICATION. May 1992
6. By Decree of the USSR State Committee for Construction Affairs No. 354 dated February 29, 1984, the validity period was lifted
This standard applies to steel marching stairs, platforms and fences 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 flight stairs with an inclination angle of 45 and 60°, rectangular transition platforms and fences for them, made of cold-formed and hot-rolled profiles and designed for standard live loads of 200, 300 and 400.
Flight stairs, platforms and fences for them must meet all the requirements of GOST 23118 and the requirements set out 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 Figures 1-4 and Tables 1-4.
An example of a symbol for a brand of flight of stairs (ML) made of a cold-formed profile (X) with stamped steps (W), at an angle of 45° and dimensions of 6 dm and 8 dm:
MLKhSh45-6.8 GOST 23120-78
The same, platforms (PM) made of cold-formed profile with corrugated flooring (F) and dimensions = 9 dm and 6 dm:
PMHF-9.6 GOST 23120-78
The 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 = 10 dm and 24 dm;
OGlMLH45-10.24 GOST 23120-78
The same, right guardrail (OGp) with side element (EB):
OGpMLHEb45-10.24 GOST 23120-78
The same, platform fencing made of cold-formed profile with side element and dimensions = 10 dm and = 9 dm:
OGPMHEb-10.9 GOST 23120-78
Flight of stairs
1 - stringer;
2 - stage;
3 - support bar; 4 - support corner; 5 - edge
Damn.1
Venues
1 - beam; 2 - edging element; 3 - flooring; 4 - edge
___________________
*According to KMD drawings.
1.2. Depending on the operating conditions, the steps of flight stairs and decking of rectangular platforms should be made of two types:
1 - solid made of corrugated steel (F);
2 - lattice, versions:
Ш - from stamped elements;
R - from strips on the edge and round steel;
C - from stripes on an edge in one direction;
B - made of expanded steel.
1.3. The types of steps of flight stairs and floorings in rectangular platforms are shown in Figure 5.
1.4. Layout diagrams of 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, landings and fences to them (hereinafter referred to as the structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18 according to the working drawings of KMD, approved in the prescribed manner.
2.2. Structures should be made of carbon steel class C38/23 of the following grades in accordance with GOST 380:
St3kp - for construction areas with an estimated outside air temperature of minus 40°C and above;
St3Gps - the same, with an estimated outside air temperature below minus 40 to minus 65°C inclusive.
2.3. Limit deviations linear dimensions structures from the nominal ones, deviations of the shape and arrangement of surfaces from the design ones are given in Table 5.
Stair railing
1 - stand;
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 elements must be performed mechanized. It is allowed, in the absence of equipment for welding by mechanized methods, to use manual welding.
2.5. Materials for welding must be accepted 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 flight stairs and decking platforms
Type 1. Solid (F)
Type 2. Lattice
Execution Ш Execution R
Execution C Execution B
Damn.5
2.6. For bolted connections, bolts of normal accuracy must be used in accordance with GOST 7798 and in accordance with SNiP II-B.3.
2.7. Structures must be primed and painted. Primer and painting must comply with coating class V according to GOST 9.032.
2.8. Factory and installation joints of fencing elements should not have sharp protrusions or edges.
Table 5
Nominal size and name of deviation | Prev. off flight of stairs, landing, fencing of flight of stairs and landing | |
1. Length; ; up to 1000 incl. | ||
2. Width St. 1000 to 1600 incl. | Drawing 1-4 |
|
3. Height: | ||
St. 1600 to 2500 incl. | ||
4. Distance between ribs in stringers and platform beams | Drawings 1 and 2 |
|
5. Distance between fence posts | Drawings 3 and 4 |
|
6. Inequality of diagonals (non-rectangularity), no more | ||
7. Distance between the centers of holes within one group A | ||
8. Distance between groups of holes A | ||
9. Deviation from straightness | ||
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, landings and fences to them;
additional parts for connecting structures;
bolts, nuts and washers (supplied in quantities 10% more than specified in the design drawings);
technical documentation in accordance with the requirements of GOST 23118.
4. Acceptance rules
4.1. Designs to verify compliance with the requirements of this standard must be accepted by the technical control of the manufacturer.
4.2. Monitoring deviations of linear dimensions of structures (including cross-sectional dimensions of rolled profiles) from nominal, deviations of the shape and location of surfaces of parts from the design, 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 batch includes similar structures, manufactured using the same technology, from materials of the same quality.
The batch size is established by agreement between the manufacturer and the consumer.
4.4. During random acceptance inspection, 3 designs are selected from the batch. must be subjected to piece-by-piece inspection for compliance with the requirements established by this standard.
4.5. If, when checking the selected structures, there is at least one structure that does not meet the requirements of this standard, a double number of structures from the same batch should be selected and re-tested. If, upon re-inspection, there is at least one design that does not meet the requirements of this standard for one of the indicators, then this batch is rejected and sent for revision.
4.6. The consumer has the right to accept structures, applying the acceptance rules and control methods established by this standard.
5. Control methods
5.1. Monitoring 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 using universal methods and means.
5.2. Quality control of seams of welded joints and the dimensions of their sections must be carried out in accordance with SNiP III-18.
6. Labeling, packaging, transportation and storage
6.1. Manufactured structures must be marked.
6.2. The structures of staircases 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 must prevent their mutual displacement and damage during transportation and storage.
6.4. A tag is attached to each package or structure, on which the following markings must be applied:
Order number;
number of the KMD drawing according to which the structure was made.
6.5. Each structural element must be marked symbol brand of the element (without 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 ascent, on the wall of the platform beam and on the upper edge of the fence handrail.
6.7. Connecting parts of structures must be supplied along with the structures. By agreement with the customer, it is possible to supply connecting parts separately from structures, in which case they must be packaged in wooden boxes according to GOST 2991.
6.8. The weight of the package should not exceed 3 tons.
6.9. Structures must be transported and stored in stacks in a horizontal position supported on wooden pads and gaskets. The pads 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. The installation of structures must ensure their design position, which excludes the formation of a reverse slope of the steps of more than 1°.
8. Manufacturer's warranty
8.1. The manufacturer must 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 diagrams of flight stairs
Application
Information
Floor height or distance between floors;
, , - nominal dimensions of staircase elements;
- angle of inclination of stairs; - step width; - step height
In diagrams 2-5, the nodes circled are made rigid by welding with the help of additional elements.
The text of the document is verified according to:
official publication
Ministry of Construction of Russia -
M.: Standards Publishing House, 1992
MARKING STAIRS, PLATFORMINGS AND STEEL FENCES
Specifications
Steel flights of steps, stair landings and railings. Specifications
Date of introduction 1979-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED to the Order of the Red Banner of Labor by the Central Research and Design Institute of Building Metal Structures (TsNIIproektstalkonstruktsiya) of the USSR State Construction Committee
All-Union Scientific Research and Design-Technological Institute (VNIKTIstalkonstruktsiya) Ministry of Installation and Special Construction of the USSR
All-Union State Design Institute for Industrialization of Installation Works (Gipromontazhindustriya) Ministry of Montazhspetsstroy USSR
DEVELOPERS: V.M. Laptev (topic leader), L.A. Peskova, S.I. Bochkova, A.F. Gai, L.M. Dudilovsky, B.A. Shtepa
2. APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of the Council of Ministers of the USSR for Construction Affairs dated April 28, 1978 No. 71
3. INTRODUCED FOR THE FIRST TIME
4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
5. REPUBLICATION. May 1992
6. By Decree of the USSR State Committee for Construction Affairs No. 354 dated February 29, 1984, the validity period was lifted
This standard applies to steel flight stairs, platforms and their fencing used in industrial buildings and structures constructed and operated in areas with a design temperature of minus 65°C and above.
The standard establishes technical requirements for flight stairs with an inclination angle of 45 and 60°, rectangular transition platforms and fences for them, made of cold-formed and hot-rolled profiles and designed for standard temporary loads of 200, 300 and 400 kgf/cm2.
Flight stairs, platforms and fences for them must meet all the requirements of GOST 23118 and the requirements set out 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 Figures 1-4 and Tables 1-4.
An example of a symbol for a brand of flight of stairs (ML) made of a cold-formed profile (X) with stamped steps (W), at an angle of 45° and dimensions H = 6 dm and H = 8 dm: MLKhSh45-6.8 GOST 23120-78
The same, platforms (PM) made of cold-formed profile with corrugated flooring (F) and dimensions Lp = 9 dm and B = 6 dm: PMHF-9.6 GOST 23120-78
The same, the left railing (OGl) of a flight of stairs from a cold-formed profile without a side element, at an angle of 45° and dimensions Leg = 10 dm and H = 24 dm: OGlMLH45-10.24 GOST 23120-78
The same, right guardrail (OGp) with side element (Eb): OGpMLHEb45-10.24 GOST 23120-78
The same, platform fencing made of cold-formed profile with side element and dimensions Leg = 10 dm and Log = 9 dm: OGPMKHEb-10.9 GOST 23120-78
Flight of stairs
1 - stringer; 2 - stage; 3 - support bar; 4 - support 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 flight stairs and decking of rectangular platforms should be made of two types:
1 - solid made of corrugated steel (F);
2 - lattice, versions:
Ш - from stamped elements;
R - from strips on the edge and round steel;
C - from stripes on an edge in one direction;
B - made of expanded steel.
1.3. The types of steps of flight stairs and floorings in rectangular platforms are shown in Figure 5.
1.4. Layout diagrams of flight stairs, platforms and fences are given in the appendix.
Table 1 (dimensions in mm)
| a | H | L | h | b | B | B1 | b1 |
| 600 | 600 | ||||||
| 1200 | 1200 | ||||||
| 45º | 1800 | 1800 | 600 | 500 | 7 | ||
| 2400 | 2400 | 200 | 200 | 800 | 700 | 10 | |
| 3000 | 3000 | 1000 | 900 | ||||
| 3600 | 3600 | ||||||
| 4200 | 4200 | ||||||
| 600 | 345 | ||||||
| 1200 | 693 | ||||||
| 1800 | 1039 | ||||||
| 2400 | 1386 | 600 | 500 | ||||
| 60º | 3000 | 1732 | 300 | 200 | 5 | ||
| 3600 | 2078 | 800 | 700 | ||||
| 4200 | 2425 | ||||||
| 4800 | 2771 | ||||||
| 5400 | 3118 | ||||||
| 6000 | 3464 |
Table 2 (dimensions in mm)
| Ln | 900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000 |
| B | 600; 800; 1000 |
| B1 | 500; 700; 900 |
2.1. The structures of flights of stairs, landings and fences to them (hereinafter referred to as the structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18 according to the working drawings of KMD, approved in the prescribed manner.
2.2. Structures should be made of carbon steel class C38/23 of the following grades in accordance with GOST 380:
St3kp - for construction areas with an estimated outside air temperature of minus 40°C and above;
St3Gps - the same, with an estimated outside air temperature below minus 40 to minus 65°C inclusive.
2.3. The maximum 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.
Types of steps of flight stairs and decking platforms
Type 1. Solid (F)
Type 2. Lattice
Execution Ш Execution R
Execution C Execution B
2.6. For bolted connections, bolts of normal accuracy must be used in accordance with GOST 7798 and in accordance with SNiP II-B.3.
2.7. Structures must be primed and painted. Primer and painting must comply with coating class V according to GOST 9.032.
2.8. Factory and installation joints of fencing elements should not have sharp protrusions or edges.
Table 5 (dimensions in mm)
| Nominal size and name of deviation | Prev. off flight of stairs, landing, fencing of flight of stairs and landing | Sketch |
| 1. Length Lк; Ln; Log up to 1000 incl. | ||
| 2. Width B1 St. 1000 to 1600 incl. | ||
| 3. Height Hp; Hl: St. 1600 to 2500 incl. " 2500 " 4000 " " 4000 " 8000 " |
± 2.5 ± 3.0 ± 4.0 |
|
| 4. The distance between the ribs in the stringers and beams of the platforms lo | ± 2.0 | Drawings 1 and 2 |
| 5. Distance between fence posts lo | ± 2.0 | Drawings 3 and 4 |
| 6. Inequality of diagonals (non-rectangularity), no more | 4,0 | |
| 7. Distance between the centers of holes within one group A | ± 1.3 | |
| 8. Distance between groups of holes A | ± 2.5 |  |
| 9. Deviation from straightness (δ) along length L: up to 1000 incl. St. 1000 to 1600 incl. " 1000 " 2500 " " 2500 " 4000 " " 4000 " 8000 " |
0,8 1,3 2,0 3,0 5,0 |
 |
3. Completeness
3.1. The structures must be supplied by the manufacturer in a comprehensive manner.
The kit should include:
flights of stairs, landings and fences to them;
additional parts for connecting structures;
bolts, nuts and washers (supplied in quantities 10% more than specified in the design drawings);
technical documentation in accordance with the requirements of GOST 23118.
4. Acceptance rules
4.1. Designs to verify compliance with the requirements of this standard must be accepted by the technical control of the manufacturer.
4.2. Monitoring of deviations of the linear dimensions of structures (including cross-sectional dimensions of rolled profiles) from the nominal, deviations of the shape and location of the surfaces of parts from the design, the quality of welded joints and preparation of the surface for protective coatings should be carried out before priming the structures.
4.3. Acceptance of structures must be carried out in batches. The batch includes similar structures, manufactured using the same technology, from materials of the same quality.
The batch size is established by agreement between the manufacturer and the consumer.
4.4. During random acceptance inspection, 3 designs are selected from the batch. must be subjected to piece-by-piece inspection for compliance with the requirements established by this standard.
4.5. If, when checking the selected structures, there is at least one structure that does not meet the requirements of this standard, a double number of structures from the same batch should be selected and re-tested. If, upon re-inspection, there is at least one design that does not meet the requirements of this standard for one of the indicators, then this batch is rejected and sent for revision.
4.6. The consumer has the right to accept structures, applying the acceptance rules and control methods established by this standard.
5. Control methods
5.1. Monitoring 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 using universal methods and means.
5.2. Quality control of seams of welded joints and the dimensions of their sections must be carried out in accordance with SNiP III-18.
6. Labeling, packaging, transportation and storage
6.1. Manufactured structures must be marked.
6.2. The structures of staircases 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 must prevent their mutual displacement and damage during transportation and storage.
6.4. A tag is attached to each package or structure, on which the following markings must be applied: order number; number of the KMD drawing according to which the structure was made.
6.5. Each structural element must be marked with a symbol of the brand of the element (without the 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 on the right side along the ascent, on the wall of the landing beam and on the upper edge of the handrail of the fence.
6.7. Connecting parts of structures must be supplied along with the structures. By agreement with the customer, it is possible to supply connecting parts separately from structures; in this case, they must be packed in wooden boxes in accordance with GOST 2991.
6.8. The weight of the package should not exceed 3 tons.
6.9. Structures must be transported and stored in stacks in a horizontal position supported on wooden pads and gaskets. The pads 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. The installation of structures must ensure their design position, which excludes the formation of a reverse slope of the steps of more than 1°.
H, L, B, Lп, Hog - nominal dimensions of staircase elements;
α - angle of inclination of stairs; b - step width; h - step height.
In diagrams 2-5, the nodes circled are made rigid by welding with the help of additional elements.
The text of the document is verified according to: official publication of the Ministry of Construction of Russia - M.: Standards Publishing House, 1992
GOST 23120-78
Group Zh34
STATE STANDARD OF THE USSR UNION
MARKING STAIRS, PLATFORMINGS AND STEEL FENCES
Specifications
Steel flights of steps, stair landings and railings.
Specifications
Date of introduction 1979-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED to the Order of the Red Banner of Labor by the Central Research and Design Institute of Building Metal Structures (TsNIIproektstalkonstruktsiya) of the USSR State Construction Committee
All-Union Scientific Research and Design-Technological Institute (VNIKTIstalkonstruktsiya) Ministry of Installation and Special Construction of the USSR
All-Union State Design Institute for Industrialization of Installation Works (Gipromontazhindustriya) Ministry of Montazhspetsstroy USSR
DEVELOPERS
V.M. Laptev (topic leader), L.A. Peskova, S.I. Bochkova, A.F. Gai, L.M. Dudilovsky, B.A. Shtepa
2. APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of the Council of Ministers of the USSR for Construction Affairs dated April 28, 1978 No. 71
3. INTRODUCED FOR THE FIRST TIME
4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
Item number |
|
GOST 9.032-74 | |
GOST 380-88 | |
GOST 2991-85 | |
GOST 7798-70 | |
Introductory part, 3.1, 7.1 |
|
SNiP II-V.3-72 | |
5. REPUBLICATION. May 1992
6. By Decree of the USSR State Committee for Construction Affairs No. 354 dated February 29, 1984, the validity period was lifted
This standard applies to steel flight stairs, platforms and their fencing used in industrial buildings and structures constructed and operated in areas with a design temperature of minus 65°C and above.
The standard establishes technical requirements for flight stairs with an inclination angle of 45 and 60°, rectangular transition platforms and fences for them, made of cold-formed and hot-rolled profiles and designed for standard live loads of 200, 300 and 400.
Flight stairs, platforms and fences for them must meet all the requirements of GOST 23118 and the requirements set out 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 Figures 1-4 and Tables 1-4.
An example of a symbol for a brand of flight of stairs (ML) made of a cold-formed profile (X) with stamped steps (W), at an angle of 45° and dimensions of 6 dm and 8 dm:
MLKhSh45-6.8 GOST 23120-78
The same, platforms (PM) made of cold-formed profile with corrugated flooring (F) and dimensions = 9 dm and 6 dm:
PMHF-9.6 GOST 23120-78
The 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 = 10 dm and 24 dm;
OGlMLH45-10.24 GOST 23120-78
The same, right guardrail (OGp) with side element (EB):
OGpMLHEb45-10.24 GOST 23120-78
The same, platform fencing made of cold-formed profile with side element and dimensions = 10 dm and = 9 dm:
OGPMHEb-10.9 GOST 23120-78
Flight of stairs
1 - stringer;
2 - stage;
3 - support bar; 4 - support corner; 5 - edge
Damn.1
Venues
1 - beam; 2 - edging element; 3 - flooring; 4 - edge
___________________
*According to KMD drawings.
1.2. Depending on the operating conditions, the steps of flight stairs and decking of rectangular platforms should be made of two types:
1 - solid made of corrugated steel (F);
2 - lattice, versions:
Ш - from stamped elements;
R - from strips on the edge and round steel;
C - from stripes on an edge in one direction;
B - made of expanded steel.
1.3. The types of steps of flight stairs and floorings in rectangular platforms are shown in Figure 5.
1.4. Layout diagrams of 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, landings and fences to them (hereinafter referred to as the structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18 according to the working drawings of KMD, approved in the prescribed manner.
2.2. Structures should be made of carbon steel class C38/23 of the following grades in accordance with GOST 380:
St3kp - for construction areas with an estimated outside air temperature of minus 40°C and above;
St3Gps - the same, with an estimated outside air temperature below minus 40 to minus 65°C inclusive.
2.3. The maximum 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 - stand;
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 elements must be performed mechanized. It is allowed, in the absence of equipment for welding by mechanized methods, to use manual welding.
2.5. Materials for welding must be accepted 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 flight stairs and decking platforms
Type 1. Solid (F)
Type 2. Lattice
Execution Ш Execution R
Execution C Execution B
Damn.5
2.6. For bolted connections, bolts of normal accuracy must be used in accordance with GOST 7798 and in accordance with SNiP II-B.3.
2.7. Structures must be primed and painted. Primer and painting must comply with coating class V according to GOST 9.032.
2.8. Factory and installation joints of fencing elements should not have sharp protrusions or edges.
Table 5
Nominal size and name of deviation | Prev. off flight of stairs, landing, fencing of flight of stairs and landing | |
1. Length; ; up to 1000 incl. | ||
2. Width St. 1000 to 1600 incl. | Drawing 1-4 |
|
3. Height: | ||
St. 1600 to 2500 incl. | ||
4. Distance between ribs in stringers and platform beams | Drawings 1 and 2 |
|
5. Distance between fence posts | Drawings 3 and 4 |
|
6. Inequality of diagonals (non-rectangularity), no more | ||
7. Distance between the centers of holes within one group A | ||
8. Distance between groups of holes A | ||
9. Deviation from straightness | ||
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, landings and fences to them;
additional parts for connecting structures;
bolts, nuts and washers (supplied in quantities 10% more than specified in the design drawings);
technical documentation in accordance with the requirements of GOST 23118.
4. Acceptance rules
4.1. Designs to verify compliance with the requirements of this standard must be accepted by the technical control of the manufacturer.
4.2. Monitoring of deviations of the linear dimensions of structures (including cross-sectional dimensions of rolled profiles) from the nominal, deviations of the shape and location of the surfaces of parts from the design, the quality of welded joints and preparation of the surface for protective coatings should be carried out before priming the structures.
4.3. Acceptance of structures must be carried out in batches. The batch includes similar structures, manufactured using the same technology, from materials of the same quality.
The batch size is established by agreement between the manufacturer and the consumer.
4.4. During random acceptance inspection, 3 designs are selected from the batch. must be subjected to piece-by-piece inspection for compliance with the requirements established by this standard.
4.5. If, when checking the selected structures, there is at least one structure that does not meet the requirements of this standard, a double number of structures from the same batch should be selected and re-tested. If, upon re-inspection, there is at least one design that does not meet the requirements of this standard for one of the indicators, then this batch is rejected and sent for revision.
4.6. The consumer has the right to accept structures, applying the acceptance rules and control methods established by this standard.
5. Control methods
5.1. Monitoring 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 using universal methods and means.
5.2. Quality control of seams of welded joints and the dimensions of their sections must be carried out in accordance with SNiP III-18.
6. Labeling, packaging, transportation and storage
6.1. Manufactured structures must be marked.
6.2. The structures of staircases 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 must prevent their mutual displacement and damage during transportation and storage.
6.4. A tag is attached to each package or structure, on which the following markings must be applied:
Order number;
number of the KMD drawing according to which the structure was made.
6.5. Each structural element must be marked with a symbol of the brand of the element (without the 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 on the right side along the ascent, on the wall of the landing beam and on the upper edge of the handrail of the fence.
6.7. Connecting parts of structures must be supplied along with the structures. By agreement with the customer, it is possible to supply connecting parts separately from structures; in this case, they must be packed in wooden boxes in accordance with GOST 2991.
6.8. The weight of the package should not exceed 3 tons.
6.9. Structures must be transported and stored in stacks in a horizontal position supported on wooden pads and gaskets. The pads 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. The installation of structures must ensure their design position, which excludes the formation of a reverse slope of the steps of more than 1°.
8. Manufacturer's warranty
8.1. The manufacturer must 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 diagrams of flight stairs
Application
Information
Floor height or distance between floors;
, , - nominal dimensions of staircase elements;
- angle of inclination of stairs; - step width; - step height
In diagrams 2-5, the nodes circled are made rigid by welding with the help of additional elements.
The text of the document is verified according to:
official publication
Ministry of Construction of Russia -
M.: Standards Publishing House, 1992
STATE STANDARD OF THE USSR UNION
MARCHING STAIRS,
SITES AND FENCES
STEEL
TECHNICAL CONDITIONS
GOST 23120-78
STATE COMMITTEE OF THE USSR
ON CONSTRUCTION AFFAIRS
Moscow
DEVELOPED AND INTRODUCED to the Order of the Red Banner of Labor by the Central Research and Design Institute of Building Metal Structures (TsNIIproektstalkonstruktsiya) of the USSR State Construction Committee
All-Union Scientific Research and Design-Technological Institute (VNIKTIstalkonstruktsiya) Ministry of Installation and Special Construction of the USSR
All-Union State Design Institute for Industrialization of Installation Works (Gipromontazhindustriya) Ministry of Montazhspetsstroy USSR
PERFORMERS
V. M. Laptev(topic leader), L. A. Peskova, S. I. Bochkova, A. F. Gai, L. M. Dudilovsky, B. A. Shtepa
APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of the Council of Ministers of the USSR for Construction Affairs dated April 28, 1978 No. 71
STATE STANDARD OF THE USSR UNION
By Resolution of the State Committee of the USSR Council of Ministers for Construction Affairs dated April 28, 1978 No. 71, the validity period was established
from 01/01/1979
until 01/01/1984
This standard applies to steel flight stairs, platforms and their fencing used in industrial buildings and structures constructed and operated in areas with a design temperature of minus 65 °C and above.
The standard establishes technical requirements for flight stairs with an inclination angle of 45 and 60°, rectangular transition platforms and fences for them, made of cold-formed and hot-rolled profiles and designed for standard temporary loads of 200, 300 and 400 kgf/m 2.
Flight stairs, platforms and fences for them must meet all the requirements of GOST 23118-78 and the requirements set out 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 to them must correspond to those indicated in the drawing. 1 - 4 and in table. 14 .
Flight of stairs
____________
*According to KMD drawings.
1 - kosour; 2 - step; 3 - support bar; 4 - support corner; 5 - rib
Crap. 1
Table 1
Dimensions in mm
|
a |
H |
L |
h |
b |
B |
B 1 |
B 1 |
|
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
Crap. 2
Table 2
mm
|
Ln |
900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000 |
|
B |
|
|
B 1 |
Stair railing
____________
*According to KMD drawings.
1 - stand; 2 - handrail, 3 4 - side element
Crap. 3
Table 3
Dimensions in mm
|
a |
H or |
L or |
h o |
h |
l o |
Site fencing
____________
*According to KMD drawings.
1 - stand; 2 - handrail, 3 - middle enclosing element; 4 - side element
Crap. 4
Table 4
mm
|
H or |
1000; 1200 |
|
L or |
900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000 |
|
h o |
140 |
|
h |
|
|
l o |
From 600 to 1300 |
Example of a symbolbrand of flight of stairs (ML) from a cold-formed profile (X) with stamped steps (W), at an angle of 45° and dimensions N= 6 dm and IN= 8 dm:
MLKhSh45-6.8 GOST 23120-78
The same, platforms (PM) made of cold-formed profile with corrugated flooring (F) and dimensionsLn= 9 dm and IN= 6 dm:
PMHF-9.6 GOST 23120-78
The same, the left railing (OGl) of a 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 guardrail (OGp) with side element (EB):
OGpMLHEb45-10.24 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:
OGPMHEb-10.9 GOST 23120-78
1.2. Depending on the operating conditions, the steps of flight stairs and decking of rectangular platforms should be made of two types:
1 - solid made of corrugated steel (F);
2 - lattice, versions:
Ш - from stamped elements;
R - from strips on the edge and round steel;
C - from stripes on an edge in one direction;
B - made of expanded steel.
1.3. The types of steps of flight stairs and floorings in rectangular platforms are shown in Fig. 5 .
1.4. Layout diagrams of flight stairs, platforms and fences are given in the appendix.
Types of steps of flight stairs and decking platforms
Type 1. Solid (F)
Type 2. Lattice
Execution Ш Execution R
Execution C Execution B
Crap. 5
2. Technical requirements
2.1. The structures of flights of stairs, landings and fences to them (hereinafter referred to as the structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18-75 according to the working drawings of KMD, approved in the prescribed manner.
2.2. Structures should be made of carbon steel class C38/23 of the following grades in accordance with GOST 380-71:
VSt3kp2 - for construction areas with an estimated outside air temperature of minus 40 °C and above;
VSt3Gps5 - the same, with an estimated outside air temperature below minus 40° From up to minus 65 °C incl.
2.3. The maximum 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 .
2.4. Welded connections of elements must be performed mechanized. It is allowed, in the absence of equipment for welding by mechanized methods, to use manual welding.
2.5. Materials for welding must be accepted in accordance with SNiP II -B.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 -B.3-72.
2.7. Structures must be primed and painted. The primer and painting must correspond to the fifth class of coating according to GOST 9.032-74.
2.8. Factory and installation joints of fencing elements should not have sharp protrusions or edges.
Table 5
mm
|
Nominal size and name of deviation |
Prev. off flight of stairs, landing, fencing of flight of stairs and landing |
Sketch |
|
|
Length L to; L p; L or |
up to 1000 incl. |
± 1.6 |
Crap. 14 |
|
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 |
||
|
Distance between ribs in stringers and platform beamsl o |
± 2.0 |
Crap. 1 and 2 |
|
|
Distance between fence postsl o |
± 2.0 |
Crap. 3 and 4 |
|
|
Inequality of diagonals (non-rectangularity), no more |
|||
|
Distance between centers of holes within one 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, landings and fences to them;
additional parts for connecting structures;
bolts, nuts and washers (supplied in quantities 10% more than specified in the design drawings);
technical documentation in accordance with the requirements of GOST 23118-78.
4. Acceptance rules
4.1. Designs to verify compliance with the requirements of this standard must be accepted by the technical control of the manufacturer.
4.2. Monitoring of deviations of the linear dimensions of structures (including cross-sectional dimensions of rolled profiles) from the nominal, deviations of the shape and location of the surfaces of parts from the design, the quality of welded joints and preparation of the surface for protective coatings should be carried out before priming the structures.
4.3. Acceptance of structures must be carried out in batches. The batch includes similar structures, manufactured using the same technology, from materials of the same quality.
The batch size is established by agreement between the manufacturer and the consumer.
4.4. During random acceptance inspection, 3 designs are selected from the batch. must be subjected to piece-by-piece inspection for compliance with the requirements established by this standard.
4.5. If, when checking the selected structures, there is at least one structure that does not meet the requirements of this standard, a double number of structures from the same batch should be selected and re-tested. If, upon re-inspection, there is at least one design that does not meet the requirements of this standard for one of the indicators, then this batch is rejected and sent for revision.
4.6. The consumer has the right to accept structures, applying the acceptance rules and control methods established by this standard.
5. Control methods
5.1. Monitoring 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 using universal methods and means.
5.2. Quality control of seams of welded joints and the dimensions of their sections must be carried out in accordance with SNiP III-18-75.
6. Labeling, packaging, transportation and storage
6.1. Manufactured structures must be marked.
6.2. The structures of staircases 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 must prevent their mutual displacement and damage during transportation and storage.
6.4. A tag is attached to each package or structure, on which the following markings must be applied:
Order number;
number of the KMD drawing according to which the structure was made.
6.5. Each structural element must be marked with a symbol of the brand of the element (without the 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 on the right side along the ascent, on the wall of the landing beam and on the upper edge of the handrail of the fence.
6.7. Connecting parts of structures must be supplied along with the structures. By agreement with the customer, it is possible to supply connecting parts separately from structures; in this case, they must be packed in wooden boxes in accordance with GOST 2991-76.
6.8. The weight of the package should not exceed 3 tons.
6.9. Structures must be transported and stored in stacks in a horizontal position supported on wooden pads and gaskets. The pads 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. The installation of structures must ensure their design position, which excludes the formation of a reverse slope of the steps of more than 1°.
8. Manufacturer's warranty
8.1. The manufacturer must ensure that structures comply with the requirements of this standard, subject to the conditions of transportation, storage and installation established by this standard.
Application
Information
Layout diagrams of flight stairs
|
|
|
|
|
|
|
|
||
N e- floor height or distance between floors; H, L, B, L p, H or- nominal dimensions of staircase elements; a - angle of inclination of stairs ; b- step width; h- step height
In diagrams 2 - 5, the nodes circled are made rigid by 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. Labeling, packaging, transportation and storage . 8 7. Installation instructions . 9 8. Manufacturer's warranty . 9 Appendix Layout diagrams of flight stairs . 10 |
/ GOST 23120-78 (1992)
Updated: 02/09/2006
GOST 23120-78
UDC 691.714.026.22:006.354 Group Zh34
STATE STANDARD OF THE USSR UNION
MARCHING STAIRS, PLANTINGS
AND STEEL FENCES
Specifications
Steel flights of steps, stai t landings and railings.
Specifications
Date of introduction 1979-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED to the Order of the Red Banner of Labor by the Central Research and Design Institute of Building Metal Structures (TsNIIproektstalkonstruktsiya) of the USSR State Construction Committee
All-Union Scientific Research and Design-Technological Institute (VNIKTIstalkonstruktsiya) Ministry of Installation and Special Construction of the USSR
All-Union State Design Institute for Industrialization of Installation Works (Gipromontazhindustriya) Ministry of Montazhspetsstroy USSR
DEVELOPERS
V.M. Laptev (topic leader), L.A. Peskova, S.I. Bochkova, A.F. Gai, L.M. Dudilovsky, B.A. Shtepa
2. APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of the Council of Ministers of the USSR for Construction Affairs dated April 28, 1978 No. 71
3. INTRODUCED FOR THE FIRST TIME
4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
|
Designation 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 |
Introductory part, 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. By Decree of the USSR State Committee for Construction Affairs No. 354 dated February 29, 1984, the validity period was lifted
This standard applies to steel flight stairs, platforms and their fencing used in industrial buildings and structures constructed and operated in areas with a design temperature of minus 65°C and above.
The standard establishes technical requirements for flight stairs with an inclination angle of 45° and 60°, rectangular transition platforms and fences for them, made of cold-formed and hot-rolled profiles and designed for standard temporary loads of 200, 300 and 400 kgf/m 2. .
Flight stairs, platforms and fences for them must meet all the requirements of GOST 23118 and the requirements set out 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 Figures 1-4 and Tables 1-4.
An example of a symbol for a brand of flight of stairs (ML) made of a cold-formed profile (X) with stamped steps (W), at an angle of 45° and dimensions of 6 dm and 8 dm:
MLKhSh45-6.8 GOST 23120-78
The same, platforms (PM) made of cold-formed profile with corrugated flooring (F) and dimensions = 9 dm and 6 dm:
PMHF-9.6 GOST 23120-78
The 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 = 10 dm and 24 dm;
OGlMLH45-10.24 GOST 23120-78
The same, right guardrail (OGp) with side element (EB):
OGpMLHEb45-10.24 GOST 23120-78
The same, platform fencing made of cold-formed profile with side element and dimensions = 10 dm and = 9 dm:
OGPMHEb-10.9 GOST 23120-78
Flight of stairs
1 - stringer; 2 - stage; 3 - support bar; 4 - support corner; 5 - edge
Damn.1
Venues
1 - beam; 2 - edging element; 3 - flooring; 4 - edge
Damn.2
___________________
*According to KMD drawings.
1.2. Depending on the operating conditions, the steps of flight stairs and decking of rectangular platforms should be made of two types:
1 - solid made of corrugated steel (F);
2 - lattice, versions:
Ш - from stamped elements;
R - from strips on the edge and round steel;
C - from stripes on an edge in one direction;
B - made of expanded steel.
1.3. The types of steps of flight stairs and decking in rectangular platforms are shown in Figure 5.
1.4. Layout diagrams of 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 |
800 |
700 |
|
|
3600 |
2078 |
||||||
|
4200 |
2425 |
||||||
|
4800 |
2771 |
||||||
|
5400 |
3118 |
||||||
|
6000 |
3464 |
table 2
mm
|
600; 800; 1000 |
|
|
500; 700; 900 |
2. Technical requirements
2.1. The structures of flights of stairs, landings and fences to them (hereinafter referred to as the structures) should be manufactured in accordance with the requirements of this standard, SNiP III-18 according to the working drawings of KMD, approved in the prescribed manner.
2.2. Structures should be made of carbon steel class C38/23 of the following grades in accordance with GOST 380:
VSt3kp2 - for construction areas with an estimated outside air temperature of minus 40°C and above;
VSt3Gps5 - the same, with a design outdoor temperature below minus 40° to minus 65°C inclusive.
2.3. The maximum 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 - stand; 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 |
140 |
up to 790 |
||
|
60° |
1000 |
From 1385 |
From 136 |
||
|
1200 |
up to 6930 |
up to 700 |
2.4. Welded connections of elements must be performed mechanized. It is allowed, in the absence of equipment for welding by mechanized methods, to use manual welding.
2.5. Materials for welding must be accepted in accordance with SNiP II-B.3.
Table 4
mm
|
1000; 1200 |
|
|
900; 1200; 1500; 1800; 2100; 2400; 3000; 3600; 4200; 4800; 5400; 6000 |
|
|
140 |
|
|
From 600 to 1300 |
Types of steps of flight stairs and decking platforms
Type 1. Solid (F)
Type 2. Lattice
Execution Ш Execution R Execution S Execution B
Damn.5
2.6. For bolted connections, bolts of normal accuracy must be used in accordance with GOST 7798 and in accordance with SNiP II-B.3.
2.7. Structures must be primed and painted. Primer and painting must comply with coating class V according to GOST 9.032.
2.8. Factory and installation joints of fencing elements should not have sharp protrusions or edges.
Table 5
mm
|
Nominal size and name of deviation |
Prev. off flight of stairs, landing, fencing of flight of stairs and landing |
Sketch |
|
1. Length; ; up to 1000 incl. |
± 1.6 |
|
|
2. Width St. 1000 to 1600 incl. |
± 2.0 |
Drawing 1-4 |
|
3. Height: |
||
|
St. 1600 to 2500 incl. |
± 2.5 |
|
|
" 2500 " 4000 " |
± 3.0 |
|
|
" 4000 " 8000 " |
± 4.0 |
|
|
4. Distance between ribs in stringers and platform beams |
± 2.0 |
Drawings 1 and 2 |
|
5. Distance between fence posts |
± 2.0 |
Drawings 3 and 4 |
|
6. Inequality of diagonals (non-rectangularity), no more |
4,0 |
|
|
7. Distance between the centers of holes within one 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, landings and fences to them;
additional parts for connecting structures;
bolts, nuts and washers (supplied in quantities 10% more than specified in the design drawings);
technical documentation in accordance with the requirements of GOST 23118.
4. Acceptance rules
4.1. Designs to verify compliance with the requirements of this standard must be accepted by the technical control of the manufacturer.
4.2. Monitoring of deviations of the linear dimensions of structures (including the cross-sectional dimensions of rolled profiles) from the nominal, deviations of the shape and location of the surfaces of parts from the design, the quality of welded joints and preparation of the surface for protective coatings should be carried out before priming the structures.
4.3. Acceptance of structures must be carried out in batches. The batch includes similar structures, manufactured using the same technology, from materials of the same quality.
The batch size is established by agreement between the manufacturer and the consumer.
4.4. During random acceptance inspection, 3 designs are selected from the batch. must be subjected to piece-by-piece inspection for compliance with the requirements established by this standard.
4.5. If, when checking the selected structures, there is at least one structure that does not meet the requirements of this standard, a double number of structures from the same batch should be selected and re-tested. If, upon re-inspection, there is at least one design that does not meet the requirements of this standard for one of the indicators, then this batch is rejected and sent for revision.
4.6. The consumer has the right to accept structures, applying the acceptance rules and control methods established by this standard.
5. Control methods
5.1. Monitoring 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 using universal methods and means.
5.2. Quality control of seams of welded joints and the dimensions of their sections must be carried out in accordance with SNiP III-18.
6. Labeling, packaging, transportation and storage
6.1. Manufactured structures must be marked.
6.2. The structures of staircases 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 must prevent their mutual displacement and damage during transportation and storage.
6.4. A tag is attached to each package or structure, on which the following markings must be applied:
Order number;
number of the KMD drawing according to which the structure was made.
6.5. Each structural element must be marked with a symbol of the brand of the element (without the 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 on the right side along the ascent, on the wall of the landing beam and on the upper edge of the handrail of the fence.
6.7. Connecting parts of structures must be supplied along with the structures. By agreement with the customer, it is possible to supply connecting parts separately from structures; in this case, they must be packed in wooden boxes in accordance with GOST 2991.
6.8. The weight of the package should not exceed 3 tons.
6.9. Structures must be transported and stored in stacks in a horizontal position supported on wooden pads and gaskets. The pads 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. The installation of structures must ensure their design position, which excludes the formation of a reverse slope of the steps of more than 1°.
8. Manufacturer's warranty
8.1. The manufacturer must ensure that structures comply with the requirements of this standard, subject to the conditions of transportation, storage and installation established by this standard.
Application
Information
Layout diagrams of flight stairs , 1. Main parameters and dimensions 2. Technical requirements 3. Completeness 4. Acceptance rules 5. Control methods 6. Labeling, packaging, transportation and storage 7. Installation instructions 8. Manufacturer's warranty Appendix (reference). Layout diagrams of flight stairs