What is the staircase roof? What is the roof frame?
First explain the roof structure layer, refers to the building structure of the prominent part of the roof, such as the roof of the staircase, elevator room, decorative flower racks and so on. The roof of the roof refers to the roof of the roof structure (the staircase roof is the ladder roof).
The staircase roof is the staircase between the roof, people can go to the roof through the stairs. Generally by the width of 0.3 meters, the most accurate design of 0.15 meters. It is also convenient to use, and there is specification of width specification.
First, the number of stairs, location and staircase form should meet the requirements of easy to use and safe evacuation.
Second, the net width of the ladder should be in line with the provisions of the fire, the daily traffic for the main staircase ladder should be based on the use of the characteristics of the building, generally per person flow width of 0.55 + (0 ~ 0.15) m number of people , Should not be less than two shares flow. Note: 0 ~ 0.15m for the flow of people in the swing of the human body, public buildings, many places should take the upper limit.
Third, the ladder change direction, the platform armrest at the minimum width should not be less than the net width of the ladder. When the need to carry large objects should be appropriate to widen.
Fourth, the progress of each ladder should generally not exceed 18, nor should not be less than 3.
Fifth, the staircase platform upper and lower corners of the net height should not be less than 2m. The height of the ladder should not be less than 2.20m.
The roof frame is an empty shelf, mainly decorated. The roof structure is generally composed of columns and beams, without plates. Simply like a grape stand. Generally composed of small columns and trabecular.
