图样上标注直线尺寸时,尺寸的起止符号画法是如何规定的?

2025-03-16 19:24:16
推荐回答(3个)
回答1:

一般用中粗短斜线绘制,其倾斜方向与尺寸线成顺时针45度角,长度宜为2-3mm。

图样中所标注尺寸表示物体的真实大小,与绘图比例、绘图的准确度无关。尺寸以mm为单位时,不需要注明。若采用其他单位时,必须注明单位或名称。

尺寸四要素:尺寸数字、尺寸箭头、尺寸界线、尺寸线。

扩展资料:

建筑施工图,包括以下主要图纸内容:

(1)图纸首页,首页图是建筑施工图的第一页,内容一般包括:图纸目录、设计总说明、建筑装修及工程做法、门窗表等;

(2)建筑总平面图;

(3)建筑平面图;

(4)建筑立面图;

(5)建筑剖面图;

(6)建筑详图。

主要作用:为施工放线,砌筑基础及墙身,建造楼板楼梯屋顶,安装门窗,室内外装饰以及编制预算和施工组织计划提供依据。

回答2:

一般地,角度标注、圆和圆弧的标注都使用箭头。
另外,机械图样中一般使用箭头标注。

回答3:

标注什么和什么时尺寸起止符号使用剪头

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