This standard applies to urban residential buildings, public buildings and general industrial buildings, which are used for pedestrian circulation and safe evacuation. Rural buildings can refer to it for implementation. GBJ 101-1987 Coordination Standard for Architectural Stairs Modulus GBJ101-1987 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
Standard for Modulus Coordination of Building Stairs
GBJ101-87
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National Standard of the People's Republic of China
Standard for Modulus Coordination of Building Stairs
GBJ101-87
Editor Department: Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China Approval Department: State Planning Commission of the People's Republic of China Effective Date: October 1, 1987
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full Text Information System
Notice on the Release of "Residential Building Modular Coordination Standard" and "Architectural Stair Modular Coordination Standard" as National Standards
Ji Biao [1987] No. 228
According to the requirements of the former State Construction Commission (81) Jianfa Shezi No. 546, the "Unified Modular System of Buildings" GBJ2-73, which was revised by the China Building Standard Design Institute of the Ministry of Urban and Rural Construction and Environmental Protection and relevant units, was reviewed by relevant departments and divided into three standards: "Unified Modular Coordination Standard of Buildings" (approved for release), "Modular Coordination Standard of Residential Buildings" and "Modular Coordination Standard of Architectural Stairs". "Modular Coordination Standard of Residential Buildings" GBJ10087 and "Modular Coordination Standard of Architectural Stairs" GBJ101-87 are now approved as national standards and will be implemented from October 1, 1987. The original standard "Unified Modular System of Buildings" GBJ2-73 will be invalidated at the same time. The two standards are managed by the Ministry of Urban and Rural Construction and Environmental Protection, and the specific interpretation and other work is the responsibility of the China Building Standard Design Institute. The publication and distribution is organized by the Capital Construction Standard Quota Research Institute of our Commission.
National Planning Commission
February 9, 1987
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Revision NoteswwW.bzxz.Net
This standard was revised by the China Building Standard Design Institute of our Ministry in conjunction with relevant units in accordance with the task assigned by the former State Capital Construction Commission (81) Jianfashezi No. 546. This standard is the application of the "Architectural Modular Coordination and Unification Standard" in stairs. Because the modular coordination principle is a positioning system developed in the modular space grid of a three-dimensional orthogonal hexahedron, this standard is mainly based on various plane forms of straight stairs composed of rectangular steps, and specific regulations are made.
This standard absorbs the experience of domestic construction practice and the advanced experience of the International Organization for Standardization/Housing Construction Technical Committee (ISO/TC59), and is revised in combination with my country's economic and technological level.
During the implementation of this standard, if you find that there is a need for modification or supplement, please send your opinions and relevant information to the China Building Standard Design Institute for reference in future revisions. Ministry of Urban and Rural Construction and Environmental Protection
February 9, 1987
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Chapter 1
Chapter 2
Staircase Modulus Coordination
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 1 General
Article 1·0·1 In order to make the design of building stairs, under the premise of meeting the use, through the modular coordination, so as to speed up the speed of engineering construction and improve the efficiency and quality of the production, installation and construction of stairs, this standard is specially formulated. Article 1·0·2 This standard applies to stairs composed of rectangular steps for the circulation and safe evacuation of people in urban residential buildings, public buildings and general industrial buildings. Rural buildings can refer to it for implementation.
This standard does not apply to the working stairs of the operating platform, maintenance ladders, fire ladders, etc. Note: The staircase layout of this standard is shown in the figure in Appendix II. Article 1.0.3 In the design of building stairs, in addition to complying with the provisions of this standard, it shall also comply with the provisions of the current relevant national standards and specifications. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 2 Staircase Modulus Coordination
Article 2.0.1 The modulus of the staircase shall comply with the following provisions: 1. The dimensions of the staircase bay and depth shall comply with the integer multiples of the horizontal expansion modulus 3M: (Figure 2.0.1)
Note: Integer multiples of the basic modulus may be used when necessary. Figure 2.0.1 Staircase Plan
2. The dimensions of the horizontal projection mark length of the prefabricated staircase and platform components shall comply with the integer multiples of the basic modulus.
Article 2.0.2 The width of the staircase shall be an integer multiple of the basic modulus. (Figure 2·0·1)
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Note: If necessary, an integer multiple of 1/2M can be used. Article 2·0·3 The following parameters should be used for the floor height: 1. 2600, 2700, 2800, 2900, 3000, 3100, 3200, 3300, 3400, 3500, 3600mm; 2. 3600, 3900, 4200, 4500, 4800, 5100, 5400, 5700, 6000mm and other integer multiples of 300mm.
Article 2·0·4 The height of the stair tread should not be greater than 210mm, nor less than 140mm. The height of each level of tread should be the same, and the calculated value can be selected according to the table in Appendix 3. (Figure 2·0·4)
Step kick board
Step surface
Step front edge
No flange
Step flange
Speed ​​line shows the remaining kick board
bWith ​​flange
Figure 2·0·4 Stair step section
The width of the stair step should be 220, 240, 260, 280, Article 2·0·5
300, 320mm.
Note: 250mm can be used when necessary.
Step height ≤
Article 206 The maximum slope of the staircase flight should not exceed 38°, that is, the step width
0.7813. The internal traffic stairs for a small number of people can be relaxed according to the table in Appendix 3. (Figure 20·6)
Article 2·0·7 The clear height of the stair platform should not be less than 2000mm, the clear height of the stair flight should not be less than 2200mm, the front edge line of the lowest and highest steps of the stair flight Engineering Construction Standard Full Text Information System
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Slope line
Figure 2·0·6 Staircase section
Platform part
Platform part science| |tt||a Corridor on the top of the stairs
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Depth of the platform
Intermediate platform
Re-number
Stair section
b The slope line of the stairs is parallel to the top
Construction slope line
Figure 2·0·7 Partial section of stairs
The horizontal distance from the inner edge line of the top protrusion should not be less than 300mm. (Figure 20·6, Figure 2·0·7)
The depth of the intermediate platform should not be less than the width of the stair section. For the platform in Article 2·0·8
that does not change the direction of travel, its depth may not be subject to this limit. Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Appendix 1 Glossary
1. Stairs (Stair) A combination of one or more continuous flights and platforms to connect planes of different elevations.
2. Staircase (Stairenclosure) A space used to accommodate stairs and limited by walls or vertical positioning planes.
3. Staircase opening (Stair opening) The horizontal distance between the width of the staircase positioning axes.
4. Staircase flight (Stair flight) A combination of several continuous steps between two platforms. 5. Staircase width (Width of stair flight) The horizontal distance between the edges of the staircase or the wall perpendicular to the walking direction.
6. Pitchline (Pitchline) The assumed connecting line of the leading edges of each step in the staircase.
7. Pitch: The angle Q between the slope line and the horizontal plane, or the tangent of the angle to express the height-to-width ratio of the step.
8. Landing: The horizontal part connecting the floor and the end of the staircase. 9. Intermediate Landing: The platform between two floors.
10.Headroom of landing: The vertical distance between the lowest point of a landing or intermediate platform and the floor.
11. Headroom offlight: The clear distance between stair sections at the front edge of the step perpendicular to the horizontal plane.
12. Step: A staircase consisting of a tread and a step riser (or without a riser).
13. Tread: The horizontal upper surface of a step. 14. Riser: The vertical (or inclined) part connected to the tread.
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15. Going: The horizontal distance between the front edges of two adjacent steps. 16. Rise: The vertical distance between two adjacent treads. 17. Nosing: The edge in front of the step. 18. Rectangular step: a step with the same width and length and in a rectangular shape.
19. Handrail: a long strip of accessories attached to the wall or railing, or it can be set separately in the staircase.
20. Balustrade: a barrier facility with a certain rigidity and safety arranged at the edge of the staircase and platform.
21. Stairwell: a space surrounded by the inner side of the staircase and platform. 22. Walking line: the most frequent flow of people through the stairs. Engineering Construction Standards Full Text Information System
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