Construction scheme of stairs and balcony guardrail

Stairs, guardrails and handrails Mandatory regulations related to stairs, guardrails and handrails 1. Stairs (as stipulated in Article 4.2. 1 of JGJ37-87 General Principles for Design of Civil Buildings) 1. 1 The clear width of daily main traffic stairs should be based on the use characteristics of the building, generally per share. 1.2 When the ladder section changes direction, the minimum width at the platform handrail should not be less than the clear width of the ladder section. 1.3 Generally, the step distance of each flight should not exceed 18 and should not be less than 3. 1.4 The clear height of the upper and lower aisles of the landing should not be less than 2m. The clear height of the stairs should not be less than 2.20 m.1.5 Safety measures must be taken when the clear width of the stairwell of the stairs frequently used by children is more than 0.20 m. 2. Handrails and protective handrails should be set in the adjacent areas such as balconies, verandahs, indoor cloisters, inner patios, main roofs and outdoor stairs, and meet the following requirements: 2. 1 Handrails should be durable. 2.2 The railing height should not be less than1.05m. The railing height of high-rise buildings should be appropriately increased, but it should not exceed1.20m.: 2.3 The railing should not be left blank within the height range of 0. 10m from the ground or roof; 2.4 In places with children's activities, railings should be constructed in a way that is not easy to climb. Article 4.2.4 of General Principles for Civil Building Design (JGJ37-87). Stairs, handrails, railings and steps of nursery and kindergarten buildings shall meet the following requirements: 3. 1 Handrails for adults and children shall be set on the wall side of the stairs, and the height shall not be greater than 0.60 m; 3.2 The clear distance between vertically decorated rooms of stair railings should not be greater than 0.11m. When the clear width of stairwell is greater than 0.20m, safety measures must be taken; 3.3 The stair tread height should not be greater than 0. 15m, and the width should not be less than 0.26m；; 3.4 Anti-skid measures should be taken for outdoor safety evacuation stairs set in cold and cold areas. (Article 3.6.5 of Code for Architectural Design of Nurseries and Kindergartens (JGJ39-87)) 4. The clear height of guardrails on balconies and roof platforms should not be less than 1.20m, and there should be no support on the inside. (Article 3.7.4 of Code for Architectural Design of Nurseries and Kindergartens (JGJGJ39-87)) 5. The height of indoor stair railings (or railings) in primary and secondary schools should not be less than 900 mm ... The height of outdoor stairs and horizontal railings (or railings) should not be less than 1 100 mm, and the stairs should not use lattice railings that are easy to climb. (Article 6.3.5 of Code for Design of Primary and Secondary Schools (GBJ99-86)) 6. The public stairs and ramps in the commercial part of the store building shall meet the following requirements: 6. 1. The clear width of each step of the indoor staircase shall not be less than 1.40m, the height of the step shall not be greater than 0. 16m, and the width of the step shall not be less than 0.28m；; 6.2 The step height of outdoor steps should not be greater than 0. 15m, and the step width should not be less than 0.30m (Article 3. 1.6 of Code for Design of Stores and Buildings) .7. The clear width of residential stairs should not be less than 1. 10m. For residential buildings with six floors or less, the width of stairs with railings on one side should not be less than1m. (Article 4 of Code for Residential Design (GB50096- 1999)) 8. The step width of residential stairs should not be less than 0.26m, and the step height should not be greater than 0.175 m. The height of handrails should not be less than 0.90m m. When the length of railings in the horizontal section of stairs is greater than 0.590 m. (Article 4 of Code for Residential Design (GB50096- 1999)) 9. When the clear width of stairwells in residential buildings is greater than 0. 1 1m, measures must be taken to prevent children from climbing and sliding. (Article 4. 1.5 of Code for Residential Design (GB50096- 1999)) 10. The design of residential balcony railings should prevent children from climbing, and the clear distance between vertical bars of railings should not be greater than 0.11m; Anti-falling measures must be taken where flowerpots are placed. (Article 3.7.2 of Code for Residential Design (GB50096- 1999)) 1 1. Clear height of balcony railings in low-rise and multi-storey houses should not be lower than 1.05m, and clear height of balcony railings in middle-rise and high-rise houses should not be lower than1.6438.999999896 (Article 3.7.3 of Code for Residential Design (GB50096- 1999)) http.