Unless otherwise indicated, the dimensions of all unmarked door buttresses in the drawing are: a. 100mm shall be reserved when the door edge is a brick wall, and if not enough, it shall be centered; b. When the door edge is a column, no door buttress shall be left. In the drawing, the thickness of glass curtain wall is 300mm, the thickness of household wall is 200mm, and the indoor partition wall and toilet partition wall are 100mm. Except for special signs, building 1, except for elevator hall, fire lobby or staircase lobby