Vietnam: What are the details of National Standard TCVN 4319: 2012 on public buildings? What are the requirements for lift architectural design of public buildings?
- What are the details of National standard TCVN 4319: 2012 on public buildings in Vietnam? What are the requirements for lift architectural design of public buildings?
- What are the requirements for stair architectural design of public buildings in Vietnam?
- What are the regulations on sanitary areas for public buildings in Vietnam under National standard TCVN 4319: 2012?
What are the details of National standard TCVN 4319: 2012 on public buildings in Vietnam? What are the requirements for lift architectural design of public buildings?
Under National standard TCVN 4319: 2012 on dwellings and public buildings - basic rules for lift architectural design of public buildings as follows:
- In addition to stairs, dwellings and public buildings with a height of more than 6 floors should design lifts. The number of ladders depends on the type of ladder and the number of people served. In case of a special request, it must be approved by a competent authority.
- The design and selection of capacity, load, and speed of lifts must be based on the number of floors to be served, the maximum number of people to be transported during peak periods, service quality requirements, and other technical requirements.
- The installation of lifts and safety requirements when using comply with relevant regulations.
- For each building unit or service area using lifts as the main means of standing transportation, the number of lifts carrying people must not be less than 2.
- The lift must be located near the main entrance.
- The lift chamber must be large enough, with measures for ventilation, moisture, and dust protection and handrails around. Control panels and directions must be accessible to persons with disabilities.
- Water tanks must not be arranged directly on the lift chamber and water supply, heat supply, gas supply, and other technical pipes must not be allowed to pass through the lift chamber.
- The covering structure of the lift chamber must be heat-insulated, soundproof, and vibration-proof.
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What are the requirements for stair architectural design of public buildings in Vietnam?
Under National standard TCVN 4319: 2012 on dwellings and public buildings - basic rules for stair architectural design of public buildings in Vietnam as follows:
- The number and location of stairs must meet the requirements for use and safe exit of people.
- The width of the stairs depends on the characteristics of the building, in accordance with regulations on life safety [2], fire safety for dwellings and buildings [3], and relevant regulations.
- When the stair changes direction, the minimum width where the projection handrail is located must not be less than the side of the stair. If there is a requirement to transport large goods, it can be expanded to suit the requirements of use.
- The height of the stairs must not be less than 2.0 m and rest mats must be arranged. The length and width of each projection must be at least equal to the smallest width of the stair.
- The clearance height (excluding the first stair on the ground floor) above and below the stair rest must not be less than 2.0m. The clearance height of the stair side is not less than 2.2 m.
NOTE: The clearance height of the ladder side is the vertical height from the stair side of the lower stair to the inclined ceiling side of the upper stair.
- The stair must have at least one side with handrails if the width of the stair is less than 1.0 m. There are handrails on both sides if the side of the ladder is wider than 1.0 m (in case one side is a wall, no handrails on the side of the wall are allowed). The handrail must extend to cover the last two steps.
- Stairs must have a width of not less than 280 mm and a height of not greater than 180 mm (except for stairs in preschool education institutions whose height is not greater than 120 mm).
NOTE: The height and width of all steps must satisfy the sum requirement of twice the height plus the stair width (2H+B), not less than 550 mm and not greater than 700 mm. where H is the step height; B is the step width.
What are the regulations on sanitary areas for public buildings in Vietnam under National standard TCVN 4319: 2012?
In National standard TCVN 4319: 2012 on dwellings and public buildings - Basic rules for sanitary area design of public buildings in Vietnam as follows:
- Sanitary areas must be prioritized for direct natural lighting and ventilation.
NOTE: In case natural ventilation does not meet the requirements, mechanical ventilation must be used.
- The number of equipment and the height of equipment installed in the sanitary area must conform to the technical requirements and usage requirements of each type of house and public building.
- The trench slope and foundation slope in the sanitary areas shall not be less than 2% towards the drainage trench or receiver hopper.
- The floor surface, trenches on the floor surface, and the contact surface of pipes through the floor and floor with the wall surface must be designed to be waterproof and waterproof.
- The foundation and walls of the sanitary area must use materials that are non-slip, do not absorb water, do not get dirty, resist cavitation, and are easy to clean.
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