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在绘制建筑施工图时,绘制楼梯详图是很吃功夫的。用1/50的比例、用坐标网格法,即在纵坐标上截取踏步高,在横坐标上截取踏步宽,以纵横坐标相交的方法作出楼梯踏步的每步级高和级宽,不但耗时,而且伤神,这应该是建筑制图人员都深有体会的。 本人在设计和绘图实践中摸索出一种快速绘制楼梯详图的方法——平行四边形法。现以建筑物层高3000(单位mm、下同),楼梯踏步级高150,级宽300之标准楼梯第一梯段为例,介绍这种快速绘图方法(图3)。①由层高及踏步级高和级宽等给定的标准梯数值可知第一梯段投影长度为2700,投影高度为1500。作出点A和点M使其水
When drawing a building construction drawing, drawing a detailed drawing of the stairs is a lot of work. With a scale of 1/50, using the coordinate grid method, that is, taking the step height on the ordinate, intercepting the step width on the abscissa, and making the step height and the step width of the stair step by the vertical and horizontal coordinate intersection method, not only the consumption At the same time, it hurts that this should be understood by the architectural cartographers. In the design and drawing practice, I found a way to quickly draw a detailed drawing of a staircase, the parallelogram method. Now take the first stairway of a standard staircase with a building height of 3000 (in mm, the same below), a stair step height of 150, and a width of 300 steps as an example to introduce this rapid drawing method (Figure 3). 1 It is known from the values of the height of the floor, the height of the step, and the width of the stairs that the first ladder has a projection length of 2700 and a projection height of 1500. Make point A and point M to make it water