Layout of elevator and stairs with a width of 3.6 meters

Yes, but it depends on how your interior is designed and whether there is enough room for stairs. If the stairs are gentle, your indoor area will be reduced.

1. Slope of stairs

Determination of the slope of stairs, Factors such as walking comfort, climbing efficiency and spatial state should be considered.

The line connecting the front edges of steps at all levels of the ladder section is called the gradient line. The angle between the gradient line and the horizontal plane is the gradient of the stairs (the tangent of this angle is called the gradient of the stairs). The gradient of the indoor stairs is generally 2 -45 degrees, and the best gradient is about 3 degrees. The gradient required for stairs with special functions is different. For example, the gradient of climbing stairs is above 6 degrees. Special stairs generally take 45 -6 degrees, the gradient of indoor and outdoor stairs is 14 -27 degrees, and the gradient of the ramp is usually below 15 degrees. Generally speaking, in places with large crowds, high safety standards, or abundant areas, the slope of stairs should be gentle, and the slope of auxiliary stairs that are only used by a few people or are not used often can be steeper. But it's better not to exceed 38 degrees.

2. Step size

The size of a step should generally be adapted to the size of a person's foot, and it is also related to the use function of different types of buildings. The size of a step includes the height and width. The ratio of the height and width of the step is the gradient of the stairs. Steps can have different values under the same gradient, giving an appropriate range to make people feel comfortable when walking. Practice has proved that a step that feels comfortable when walking, Generally, the height is relatively small but the width is relatively large. Therefore, when choosing the height-width ratio, it is advisable to use the smaller height for the two sizes with the same slope, because it is easier to walk than the step with large height and width. However, it should be noted that the width should not be too small, and it is advisable not to be less than 24mm, so as to ensure that the focus of the foot falls near the center of the foot and make 9% of the heel focus on the step. For adults, the minimum width of the stair step should be 24 mm. The comfortable width should be about 9mm；. The height of the step should not be greater than 17mm, and the comfortable height should be about 15mm.

The height and width of each step of the same staircase should be the same, and the size should not change irregularly to ensure the constant relationship between slope and stride.

3. The width of the step is generally determined by the number of people passing by to ensure smooth traffic. The width of the ladder for two people should generally be 11mm--14mm；; Generally, the width of the staircase for three people should be 1,65-2,1. If more people circulate, the width should be increased by 55+(-15)mm per stream of people. When the width of the staircase is greater than 14mm, handrails should be set against the wall, and when there are more than 4-5 people on the stairs, middle handrails should be added.