What is the role of a stairway in a building (a ladder next to a handrail)?
Some inconvenient to take the stairs things can be directly from the stairs to take a rope hanging up (such as long stalk and the like there are more items and the floor and a high piece of moving from the stairs to the crane sometimes as long as the upper and lower 2 people can also Soon) there is the possibility that if there is a need to set up a staircase lock the stairway can exist as a reserved space
You ask this question is very interesting, my personal opinion, explain, initiate.
First, there are many kinds of stairs, ring stairs certainly have ladder, scissors ladder certainly no ladder, so do not say, to talk about the most common in the general residential, staircase platform stairs it!
It is clear that the retention of the ladder is not a mandatory requirement, but only from the convenience of construction and pedestrian, and thus a customary habit.
If there is no ladder, the end of the two ladder plates connected to the platform will be partially touched together, which will make the construction and installation of concrete in the concrete rather inconvenient. In addition, the staircase board phase, then, will also cause the side part of the railings and handrail distance is too close to pedestrian use.
Some people may say that the railing inward to make a little, not on it? In fact, then the railing between the concrete slab is useless, it would not have it?
There is also a possible cause, and the building modulus. The width of the stairs can be set, plus railings installation space, coupled with the distance between the railing, plus the outer wall, the total width should be about 2.8 meters, and apply the general building modulus, the general use of 3 meters, Out of about 20 centimeters, which may also be the reason for the existence of ladder.
