Description of introduction parameters of national standard for guardrail height

We will see some guardrails on both sides of hospital aisles or in public places, such as parks, which are made to take care of friends who are inconvenient to travel. Moreover, according to the general situation of applicable people in each place, we find that guardrails not only have certain differences in design styles, but also have great differences in height. For example, in schools, because they are generally used by children, their height is not the same as that of adults, so the guardrails in this respect. Then the next example for everyone is about the national standard parameters for the height of guardrail. Interested friends can refer to the following.

1. National standard for guardrail height

Code for Residential Design (GB596-1999)23 edition

1. Balcony railings should be designed to prevent children from climbing, the clear distance between vertical bars of railings should not be greater than .11m, and fall prevention measures must be taken at the place where flowerpots are placed.

2. The clear height of balcony railings in low-rise and multi-storey houses should not be less than 1.5m; The clear height of balcony railings in middle-high-rise and high-rise residential buildings should not be less than 1.1m m. Closed balcony railings should also meet the requirements of clear height of balcony railings. The balcony of middle and high-rise buildings, high-rise buildings and houses in cold and severe cold areas should adopt solid railings.

3. When the height of the window sill outside the window is less than .9m from the floor and ground, there should be protective facilities, and there is no such restriction when there is a balcony or platform outside the window. The clear height of the window sill or the height of the protective railing shall be calculated from the treadable surface to ensure the clear height of .9m m.

Code for Residential Design (GB596-1999)23? Description of provisions

1? Balcony is a place where children have more activities. If the vertical bar spacing of railings (including local railings on the fence board) is not properly designed, it will easily lead to accidents. According to the principle of ergonomics, the vertical clear distance of railings should be less than .11m to prevent children from getting out. At the same time, in order to prevent people from falling because of placing flowerpots on the railings, this article requires that the railings where flowerpots can be placed must take measures to prevent falling.

2, according to the human center of gravity and psychological requirements. Balcony railings should increase with the height of the building. Closing the balcony did not change the stability of the human body's center of gravity and psychological requirements. Therefore, closed balcony railings should also meet the requirements of the clear height of balcony railings. The reasons why solid railings are required for balconies of middle and high-rise buildings and residential buildings in cold and severe cold areas are: one is to prevent cold air from pouring into the room from balcony doors, and the other is to prevent articles from falling from gaps in railings and injuring people. In addition, it is common for middle and high-rise buildings, high-rise houses and houses in cold and severe cold areas to close balconies, and it is difficult to close the empty railings.

3. If there is no window sill adjacent to the balcony or platform, if the clear height from the ground is low, it is easy for children to fall. This article requires that protective measures be taken when the window sill is below .9m from the ground. The effective protective height should ensure the clear height of .9m, and the treadable surface which is easy to cause unconscious climbing, such as countertops and transverse railings below .45m from the floor (ground) surface, should not be included in the clear height of the window sill.

general principles for design of civil buildings GB? 5352-25

1. Protective railings should be set up at balconies, verandahs, indoor cloisters, inner patios, people's roofs and outdoor stairs, and the following requirements should be met:

① The railings should be made of solid and durable materials and can withstand the horizontal load specified in the load code;

(2) when the airport height is below 24m, the railing height should not be less than 1.5m, and when the airport height is above 24m and 24m (including middle and high-rise residential buildings), the railing height should not be less than 1.1m;

note: the height of the railing should be calculated from the vertical height from the floor or roof to the top surface of the handrail. If there is a treadable part with a width greater than or equal to .22m and a height less than or equal to .45m at the bottom, it should be calculated from the top surface of the treadable part.

③ The railing should not be left blank within .1m from the floor or roof;

④ The railings in houses, nurseries, kindergartens, primary and secondary schools and special activity places for children must be constructed to prevent children from climbing. When vertical bars are used as railings, the clear distance between the bars should not be greater than .11m;

⑤ In places where children are allowed to enter activities, such as cultural and entertainment buildings, commercial service buildings, sports buildings and landscape buildings, when vertical bars are used as railings, the clear distance between the bars should not be greater than .11m m..

2. The setting of windows shall meet the following requirements:

① The opening form of window sash shall be convenient for use, safe and easy for maintenance and cleaning;

(2) when using the external window, we should strengthen the measures to strengthen the window sash;

(3) the height of the bottom surface of the window sash opening to the public walkway should not be less than 2m;

(4) when the window sill of the airport is lower than .8m, protective measures should be taken, and the protective height should not be lower than .8m from the floor;

(5) when windows and holes must be opened on the firewall, they should be set according to the fire protection code;

⑥ skylight should be made of light-transmitting materials that can prevent breakage and injury;

⑦ The skylight shall be provided with measures to prevent the generation or drainage of condensed water;

⑧ The skylight should be easy to open, close, fix, prevent water leakage and clean.

note: a,? When the residential window sill is less than .9m, protective measures should be taken;

b, low windowsill, bay window and other lower parts have a wide windowsill surface where people can stand, the protective height of window guardrail or fixed window should be calculated from the windowsill surface.

general principles for design of civil buildings GB? Article 5352-25 states

Paragraph 2: The height of railings in balconies, verandahs and other airport areas should exceed the height of human body's center of gravity, so as to prevent human body from falling due to the outward movement of center of gravity when approaching the railings. According to the anthropometric results of 14 provinces in China in 198, the average height of men in China is 1656.3mm, which is converted into the height of the center of gravity in the upright state of the human body, and the height of the center of gravity after wearing shoes is 994+2 = 114 mm. Therefore, it is stipulated in the national standard "Fixed industrial protective railings" that "the height of protective railings shall not be less than 15mm". Therefore, this article stipulates that the railing height below 24m (equivalent to the height of low-rise and multi-storey buildings) should not be less than 1.5m, and the railing height above 24m (equivalent to the height of high-rise and medium-high-rise residential buildings) should not be less than 1.1m. For high-rise buildings, there will be fear when overlooking from high altitude, so it is raised to 1.1m.. It is stated in the note that when there is a treadable part with a width greater than or equal to .22m and a height lower than or equal to .45m at the bottom of the railing, it is easy for people to step on and stand and look out (not climb) according to the normal stepping situation. At this time, if the height of the railing is calculated from the floor or roof, the height from the top surface of the handrail will be lower than the height of the center of gravity of the person, which is very unsafe, so it should be calculated from the top surface of the treadable part.

in paragraphs 4 and 5, in order to protect children's lives, the railings of their special activity places should be constructed to prevent climbing, such as small edge bricks that are not suitable for horizontal floral decoration and parapet waterproof materials. When making vertical railings, the clear distance between bars should not be greater than .11m to prevent the head from falling through with the body. In recent years, in shopping malls and other buildings, the clear distance between vertical bars of some railings is about .2m, and children sometimes fall. Therefore, when children can go to activities, the clear distance between bars should not be greater than .11m when vertical railings are made alone.

this article also refers to ISO/DIS? 1255 "Building Construction-Guardrail System and Railing of Buildings" standard.

the height of guardrails varies in different regions, which is mainly manifested in the improvement and customization according to the situation of local users. For example, the guardrails in hospitals are all prepared for patients pushing wheelchairs, and the guardrails in schools are all prepared for students at school, so there is a little difference in the height of the two places, and manufacturers should make reasonable customization according to the actual situation. Then the above example is the introduction of the standards for guardrail height specifications by relevant state departments, and professionals have drawn up a series of guardrails. Manufacturers can compare their own situation and selectively learn this knowledge, so as to make reasonable customization.

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