This standard specifies the technical requirements and inspection rules for metal railings, metal, plastic or wooden handrails for residential stairs. This standard applies to metal railings, metal, plastic or wooden handrails for residential stairs. JG 3002.3-1992 Residential Stair Railings and Handrails JG3002.3-1992 Standard download decompression password: www.bzxz.net

Engineering Construction Standard Full Text Information System
Construction Industry Standard of the People's Republic of China JG3002.392
Balurefence and handrails
Residential stair
Balustradesandhandrails
Published on October 10, 1992
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full Text Information System
Implemented on June 1, 1993
. Engineering Construction Standard Full Text Information System
Construction Industry Standard of the People's Republic of China Residential stair
Balurefence and handrails
Residential stair
Balustrades and handrails handrails
Subject content and scope of application
JG3002.3—92
This standard specifies the technical requirements and inspection rules for metal handrails, metal, plastic or wooden handrails for residential stairs. This standard applies to metal handrails, metal, plastic or wooden handrails for residential stairs. 2 Reference standards
GBJ96 Residential building design code
General rules for architectural design (trial implementation)
Building structure load code
3 Steel bar welding and acceptance code
GBJ301
Building installation engineering quality inspection and evaluation standard GBJ10
Reinforced concrete structure design code.
3 Terminology
3.1 Stairs (Stair) is a combination of one or more continuous steps and platforms, used to connect building planes of different elevations.
3.2 Step: A staircase consisting of a step surface and a step riser (or without a riser). 3. β Handrail: A long strip of accessories attached to a wall or railing. 3.4
Balustrade: A barrier facility with a certain degree of rigidity and integrity arranged at the edge of a staircase or platform. 3.5
Stairwell: A space surrounded by the inner side of a staircase and platform. Product Classification
4.1 According to the material, it is divided into railings and handrails made of metal, hard wood or composite materials. 4.2 Codes for handrails and railings
The Ministry of Construction of the People's Republic of China issued the full text information system of engineering construction standards in 1992-1010
1993-06-01 implementation
bzSoeO,coCurrent Engineering Construction Standards Full Text Information System
Material Type
Handrail G
Building F
4.2.1 The materials for handrails and railings are metal type 1, hard wood type 2, and composite material type 3. 4.3 Code Examples
Metal stair railings, code: TG1
5 Technical Requirements
Basic Requirements
The height of the handrails for indoor shared stairs, measured from the center line of the step to the upper surface of the handrail, should not be less than 900mm. When the horizontal handrail is more than 500mm long, its height should not be less than 1000mm. 5.1.2 The height of outdoor shared stair railings should not be less than 1050mm, and the height of medium and high-rise residential buildings should not be less than 1100m. 5.1.3 When the width of the stairwell is greater than 200mm, it is not advisable to use lattices that make it easy for children to climb. The clearance between the vertical bars of the railing should not be greater than 110mm.
5.1.4 When the railings and handrails are transferred up and down or on the plane, they should be connected. 5.2 Materials
The specifications and quality of raw materials must meet the design requirements and the provisions of the current relevant national standards and specifications. 5.2.2
The raw materials for making railings and handrails should have factory quality certificates or test reports, and should be accepted in batches according to batch numbers when entering the site. Materials without factory quality certificates must be sampled for physical and chemical performance tests in accordance with the provisions of relevant standards. They can only be used after they pass the test. It is strictly forbidden to use unqualified materials. 5.3 Structural performance
5.3.1 After the railings, handrails and stair sections are installed, their structural bearing capacity should be able to withstand the horizontal load of 0.5kN/m specified in GBJ9, and the maximum allowable deflection value should not exceed h/100 (h is the height of the handrail). 5. Appearance quality
5.4.1 The connections (welding and screw connections) of each railing and handrail should be firm. The connection between metal railings and metal, plastic or hardwood handrails should comply with the design requirements and the provisions of the current relevant standards and specifications. 5.4.2 The surface of the product should be smooth and should not have burrs, welding slag and obvious hammer marks and other appearance defects. 5.4.3 The cutting parts of the decorative parts of the railings must be filed and polished, and the edges and corners must be kept neat and no cutting marks should be left. 5.4.4 The straight parts of the railings and handrails should be straightened, and the curved parts should be kept smooth and smooth with consistent patterns. 5.4.5 Before applying anti-rust paint, metal railings and handrails should be cleaned of rust and oil. Wooden handrails should be painted for corrosion protection. The paint layer should be uniform and firm, and should not have obvious defects such as paint accumulation and paint leakage. 5.5 Dimensional deviations should comply with the provisions of Table 1. Engineering Construction Standard Full-text Information System
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Test method
Height of railing
Lateral bending of railing
Longitudinal bending of handrail
Decorative parts
Section of handrail
Spacing between vertical members of railing
Spacing between horizontal members of railing
Allowable deviation
Inspection method
Measure with ruler
Measure with 2m ruler
Measure with 2m ruler
The structural performance test method of railing and handrail should be carried out in accordance with the requirements for cantilever components specified in GBJ10 7
Inspection rules
7.1 Before leaving the factory, railing and handrail components must be subject to various factory inspections by the inspection department of the manufacturer. mm
7.2 Inspection items and methods shall comply with the provisions of Appendix A "Inspection Items and Methods for Residential Staircase Railings and Handrails". 7.3 Batch and Sampling
7.3.1 For the same component type, same
unit and same
production, 5% random sampling shall be conducted on the basis of piece-by-piece observation of appearance quality, and the total sampling quantity shall not be less than 3 pieces. For batches greater than 300 pieces, 2% random sampling shall be conducted, and no less than 10 pieces of the total sampling quantity shall be subject to appearance quality and allowable deviation measurement inspection.
7.3.3 Structural performance inspection shall be conducted by randomly selecting one test piece from the components produced normally in half a year. 7.4 Quality assessment principle:
Evaluate by piece, guarantee items must meet the requirements, main items must meet their own requirements, general items, superior products must meet no less than 6 requirements, first-class products must meet no less than 5 requirements, qualified products must meet no less than 4 requirements
7.6 Acceptance principle:
For the handrails and handrails sampled, if the superior product rate is less than 90%, the batch of products should be accepted as first-class products; if the first-class product rate is less than 90%, the batch of products should be accepted as qualified products; if the qualified rate is less than 90%, the batch of products should be doubled for sampling, and if the qualified rate is still less than 90%, all should be repaired.
After the repaired handrails and handrails are inspected and qualified, they shall be accepted as qualified products, and the repair method and inspection results shall be recorded and archived.
Engineering Construction Standard Full Text Information System
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8 Marking, packaging, stacking, transportation
8.1 The factory name (factory logo), product code, production date (year, month, day) and production team must be marked in obvious places, and the acceptance stamp or label shall be stamped according to the inspection results. 8.2 When the manufacturer supplies products, it must issue a "certificate of conformity" to deliver to the user unit. The "certificate of conformity" shall indicate: standard number, certificate number, project name, component code, weight, production and factory date, quantity, structural performance, quality grade, etc. 8.3 The floor sample railing handrails shall be packaged into groups according to the quality grade, and the weight of each group shall not exceed 80kg. The packaging shall be firm to prevent deformation and damage.
The railings and handrails shall be stacked and transported by group and model to prevent deformation. Engineering Construction Standard Full Text Information System
. Engineering Construction Standard Full Text Information System
Project Classification
Guarantee Project
Main Project
General Project
Additional Notes:
Appendix AbzxZ.net
Inspection Projects and Methods for Residential Stair Railings and Handrails (Supplementary Documents)
Articles of this Standard
Project Content
Material quality must meet the design requirements and relevant regulations and can withstand 0.5kN/m horizontal load and deflection value less than h/100
Connection parts should meet design requirements and relevant regulations. Components should be stamped with acceptance stamps or hang signs at obvious locations. Oil and rust should be removed, and the paint layer should be even and firm. Decorative parts should ensure cutting quality
Handrails and handrails should have good appearance quality Table 1
This standard is proposed by the Ministry of Construction of the People's Republic of China. Inspection method
Material qualification certificate
Special testing instrument
Visual inspection, manual test
Early test, manual test
This standard is under the jurisdiction of the China Building Box Technology Development Research Center, the technical unit responsible for building structural components standards of the Ministry of Construction. This standard was drafted by the China Building Standard Design Institute and the Jiangsu Academy of Building Sciences. The main compilers of this standard: Yu Benying, Miao Liugen, and Huang Ji. This standard is entrusted to the China Building Standard Design Institute for interpretation. 3888com
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