Can you help me explain the carpenter's stair map?

If you don't understand the drawings, you will have a headache and your development will be limited. Construction leaders and workers need to know a little about drawings. Today, Jigong's family will tell you about the stair drawings, and the old irons on the construction site will learn quickly.

In fact, if you want to understand the stair drawings, the most important thing is to have a concept of vertical section, so that you can immediately associate it with the real thing. Today, Jigong takes an office building as an example to explain to you:

As can be seen from the above figure, the staircase figure in the basement only captures a section of the staircase, and it is half a section, indicating that the cutting line should be below the center line of the current floor when cutting horizontally, as shown in the following figure:

As can be seen from the above figure, the floor plan is cut below the center line, and only the stairs are half-run.

As can be seen from the above picture, the stairs on the first floor actually see the first floor running the first half, and the rest are all running the first half and the other half. You can understand it as long as you have a little three-dimensional concept!

As can be seen from the above picture, the stairs on the second floor actually see half of them running to the second floor, while the rest see half of them running to the first floor and the other one running.

As can be seen from the above picture, the three-story staircase actually sees the third floor running the first half, while the rest sees the second floor running the first half and the other one running the first half.

As can be seen from the above picture, the four-story staircase actually sees half of the four-story running upward, while the rest sees half of the three-story running with the other half. ?

The fifth floor is the top floor, but there are no stairs on the top floor. According to the principle of horizontal cutting below the center line of the current floor, the stairs on the fifth floor actually see all two steps on the fourth floor, so there is no cutting line.

Old site worker, through the introduction of Jigong's family, do you have a basic concept of reading stair drawings? If it is still foggy when looking at the stairs, Jigong suggested that you can find some plastic foam, a paper cutter and a steel ruler, and spend some time making a stair model yourself. I believe that if you look at three-dimensional things, you will soon understand.

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