National Standard-Design Code for Residential Buildings (revised in 2003) Balcony railing design standard "Design Code for Residential Buildings" GB 50096- 1999 (2003 edition) 3.7 Balcony 3.7. 1 Each apartment should have a balcony or platform. 3.7.2 Balcony railings should be designed to prevent children from climbing. The clear distance between the vertical bars of the railing should not be greater than 0. 1 1m, and measures must be taken to prevent the flowerpot from falling. 3.7.3 The clear height of balcony railings in low-rise and multi-storey houses should not be less than1.05m; The clear height of balcony railings in middle-high-rise and high-rise residential buildings should not be less than 1. 10m. Closed balcony railings should also meet the requirements of clear height of balcony railings. The balconies of middle and high-rise buildings, high-rise buildings and houses in cold and severe cold areas should adopt solid railings. 3.7.4 Balcony should be equipped with facilities for drying clothes; There should be a rain cover on the top balcony. The balcony adjacent to each house should be divided into households. 3.7.5 Balcony and awning should have organized drainage; The rain cover should be waterproof, and the balcony should be waterproof. Note: the height of the railing should be calculated from the vertical height of the floor or roof to the top surface of the railing. If there is a treadable part with a width greater than or equal to 0.22 m and a height less than or equal to 0.45 m at the bottom, it should be calculated from the top surface of the treadable part.