Is there a standard for the interior staircase

Is there a standard for the interior staircase

5, the width of the stairs platform Stairs platform is the connection of the stairs, but also for pedestrians to use a little rest. So the width of the staircase platform is greater than or at least equal to the width of the stairs, which specifies the lower limit of the staircase platform width. In the actual staircase design in the wide platform to determine the specific circumstances of specific analysis. The following are the same as the " 6, the stairs of the clearance height The clearance height of the stairs includes the net height of the stairway and the net height of the platform aisle. The net height of the stairway is the vertical distance between the leading edge line (including less than 0.3m below the minimum and highest level leading edge lines) to the lower edge of the protrusion. The height of the platform aisle is the vertical distance between the platform beam and the platform beam. In order to ensure that these parts of the passage or handling of objects will not be affected, the clearance height in the platform aisle should be greater than 2m, in the stairs should be greater than 2.2m. In a pair of running stairs, when the first floor platform to do the channel can not meet the high requirements of 2m, you can take the following methods to solve: ① the first floor of the bottom growth, the formation of different stages of the stairs. This treatment must increase the depth. ② the same length of the staircase unchanged, lower the floor of the floor of the floor elevation, this treatment although the construction of a unified ladder, but the indoor and outdoor floor height to meet the requirements. ③ the combination of the two methods, that is, the use of indoor and outdoor height difference is also made ranging from running ladder, to meet the stair clearance requirements, this method is more commonly used. ④ the bottom with straight stairs directly to the second floor. This staircase is longer and requires longer stairways.

3, railings (or fence) armrest height Railing (or fence) The armrest height refers to the vertical distance from the center of the tread to the top of the handrail. The determination of the height of the armrest takes into account the convenience of the handrail when people walk through the stairs. General height of the indoor armrest to take 90cm; child care in the armrest height should be suitable for children's body, handrail height generally take 60cm, but be sure to set a handrail at 60cm, 90cm should still be set at hand, then staircase for the double The The top level of the platform safe and secure height should be appropriate to increase the height of the general not less than 100cm. In order to prevent children from passing through the railing and dangerous, the horizontal distance between the railing should not be greater than 12cm. Outdoor staircase handrail height should also be appropriate to increase some, often take 110cm. The following are the same as the "

2, staircase step size The staircase is composed of several steps, each consisting of treads and ladder. Staircase ladder is for people to pass, therefore, step size to walk with people, that is, tread width and the length of the foot and the stairs when the foot and tread contact state. Tread width of 30cm, the human foot completely on the tread, walking will be more comfortable. When the tread width is reduced, people walking part of the heel when walking, walking is not convenient. General step width should not be less than 24cm, the height of the kick to determine the width and the tread width. Generally, the ratio of the height of the kick and the width of the tread is used to determine the stairway slope, and the sum of the height of the kick and the width of the tread is consistent with the length of the stride. According to the following empirical way to calculate the stepping size: 2h + b = 60 ~ 62cm or h + b = 45cm (where h refers to the step kick height, b refers to the step width), 60 ~ 62cm that the general step The When the stepping size is small, you can use the do tread or tilt the way to widen the tread surface. The mouth of the tune out of the size of 2 ~ 2.5cm, this size is too large when walking is not convenient. The following are the same as the "

some. Tread width: 250 ~ 320mm Surface height: no more than 180mm Empirical formula: kick height (r) and tread width (g) g + 2r = 600 ~ 620 mm The scale of the evacuation staircase. Such as residential not more than 175x260, commercial buildings do not exceed 160x280 Common civil construction stairs are suitable for stepping size Tread width 250 ~ 300 280 ~ 340 300 ~ 350 300 260 ~ 300 G (mm) Kick face high 156 ~ 175 140 ~ 160 120 ~ 150 150 120 ~ 150 R (mm) 1, the slope of the stairs The slope of the stairs is the slope of the stairs. It has two representations: one is the representation of the slope and the horizontal; the other is the ratio of the vertical projection height of the slope to the horizontal projection length of the slope. The common slope of the staircase ranges from 20 degrees to 45 degrees, About ten degrees more common. When the slope is less than twenty degrees, the ramp should be used. When the slope is 45 degrees, the ladder is used. The following are the same as the "

4, the width of the stairs The staircase is one of the main components of the staircase, which is for people to pass up and down, so the width of the stairs must meet the needs of the upper and lower flow and the handling of goods. The width of the staircase is determined by the need for both the flow through and the passage of large size furniture or equipment. General staircase to be considered at the same time at least through the two flow, that is, up and down in the middle of the stairs can meet through. According to the human scale, the width of each person can consider taking the width of 55cm + (0 ~ 15cm), where 0 ~ 15cm is the flow of people in the swing of the human body. The width of the staircase and the relationship between the number of shares to be handled properly. Stairs two ladder of the gap and said the stairwell, the width of the stairwell generally take 5 ~ 20cm. The following are the same as the "