Guide for purchasing finished stairs for duplex de

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Determine how to choose stairs from the key dimensions of stairs in your home

1. Determine how to choose stairs from the key dimensions of stairs in your home


1. Opening size - the size of stairs you choose, The length and width of treads and the shape of stairs (straight, L-shaped, C-shaped, U-shaped, S-shaped or rotating stairs, etc.);

2. Floor height - you choose the vertical spacing of stairs and the size of center detection, which directly affects the comfort of walking upstairs and downstairs.

standard height and calculation formula of indoor stairs: (finished stairs)

floor height (cm, 231-253252-276273-299294-322315-345

step grid number 11+112+113+114+115+1

note: if the floor area of the stairs is too large, the tooth splicing technology must be used (it is usually dark teeth, and a few manufacturers use the exposed teeth of integrated wood to prevent the wood from deforming due to the environmental impact of humidity and temperature on the board surface.

in addition, the special-shaped floor has strict requirements on the wood texture, so you must pay attention to it when purchasing.

second, from the perspective of installation and design of stairs, I will tell you how to choose and design the stairs in your own home

1, the slope of stairs

the determination of the slope of stairs should consider walking comfort Fitness, climbing efficiency and space state factors

the connection line of each point at the leading edge of each step of the ladder is called the slope line. The angle between the slope line and the horizontal plane is the slope of the stairs (the tangent of this included angle is called the gradient of stairs. The gradient of indoor stairs is generally 20 degrees -45 degrees, and the best gradient is about 30 degrees. The slopes required by stairs with special functions are different. For example, the gradient of ladders is more than 60 degrees, the gradient of special stairs is generally 45 degrees -60 degrees, the gradient of indoor and outdoor steps is 14 degrees -27 degrees, and the gradient of ramps is usually less than 15 degrees. Generally speaking, when there is a large flow of people, a high safety standard, or an area The slope of stairs in abundant places should be gentle. For auxiliary stairs that are only used by a few people or not often used, the slope can be steeper, but it is better not to exceed 38 degrees

2. Step size

generally, the size of the step should be compatible with the size and stride of the human foot, and it is also related to the use function in different types of buildings. The size of the step includes height and width. The ratio of step height to width is the gradient of stairs. Steps can have different values under the same slope, giving an appropriate range to make people feel comfortable when walking. Practice has proved that the steps that feel comfortable when walking are generally small in height and wide in width. Therefore, when selecting the height width ratio, it is better to choose the smaller height for the two sizes of the same slope, because it is easier to walk than the steps with larger height and width. However, it should be noted that the width should not be too small, preferably not less than 240mm, so as to ensure that the focus of force of the foot falls near the center of the foot, and that 90% of the focus of force of the heel is on the step. For adults, the minimum width of stair steps should be 240mm, and the comfortable width should be about 280-300mm

national standard: the height of the steps of public stairs is 160-170mm. The common cement base stairs at home are based on this standard, and the more comfortable height is about 160mm

according to the situation of the finished stairs for families sold in the current market, the height is generally 170-210mm, and about 180mm is the most economical and applicable choice

the height and width of the steps of each flight of the same stair should be the same, and the size should not change irregularly to ensure that the relationship between slope and stride is constant

3. Ladder width

the ladder width is generally determined by the traffic flow, in order to ensure smooth traffic. The width of the ladder for single person passage should generally be 800-900mm, and the general finished stairs should be designed according to this width; However, for stairs used in public places, for example, the width of the stair section for two people should generally be 1.1m--1.40m; Generally, the ladder width for three people should be 1650-2100. If more people flow through, increase the width by 550+ (0-150, mm) per person flow.

when the ladder width is greater than 1400mm, handrails against the wall should generally be set, while when there are more than 4-5 people flow on the stairs, handrails in the middle should generally be added





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