简化画法和规定画法 Simplified and prescriptive drawing

一、对称图形的简化画法 A simplified representation of a symmetric figure

       为了节省绘图时间，或由于图幅位置不够，房屋建筑制图国家标准规定了一些简化画法，此外，还有一些在工程制图中惯用的简化画法。

     In order to save time for drawing, or because of the insufficient position of the map, the national standard of architectural drawing of houses stipulates some simplified drawing methods, in addition, there are some simplified drawing methods commonly used in engineering drawing.

二、相同要素的简化画法 A simplification of the same elements

       如果图上有多个完全相同而连续排列的构造要素，可仅在两端或适当位置画出其中一两个要素的完整形状，其余部以以中心线或中心线交点表示。

       If there are more than one or two identical structural elements in a row, the complete shape of only one or two of them can be drawn at either end or at the appropriate location, and the rest of them can be represented by the center line or the intersection of the center line.

三、折断的简化画法 A broken simplification

       较长的构件，如沿长度方向的形状相同或按一定的规律变化，可断开绘制，断开处应以折断线表示。

       If the shape of a longer member is the same along the length direction or changes according to a certain rule, it can be drawn by breaking, and the breaking point should be represented by a broken line.