线型及其含义：

比例：

水、汽管道代号：

工艺管道施工图常用图例：

水、汽管道阀门和附件图例：

给排水、采暖常用图例：

通风空调工程常用图例：

风道代号：

风道、阀门及附件图例：

风口和附件代号：

暖通空调设备图例：

调控装置及仪表图例：

各种执行机构可与风阀、水阀组合 表示相应功能的控制阀门。

消防工程基本图形符号：

消防工程辅助符号：

消防工程灭火器符号：

消防管路及配件符号：

消防工程固定灭火器系统符号：

消防工程灭火设备安装处符号：

消防设施：

消防工程自动报警设备符号：

管道图例：

管道附件：

管道连接：

管件：

常见阀门：

给水配件：

小型给水排水构筑物：

给水排水设备：

仪表：

管道和设备布置平面图、剖面图示例：

管道和设备布置平面图应按假象除去上层板后俯视规则绘制，其相应的垂直剖面图应在平面图中表明剖切符号。

标准层平面图

平、剖面示例

平面图、剖面图索引符号的画法：

平面图、剖面图中的局部需另绘详图时，应在平、剖面图上标注索引符号。索引符号的画法见下图。

索引符号的画法

内视符号画法：

当表示局部位置的相互关系，在平面图上应标注内视符号。

内视符号画法

系统编号：

1、一个工程设计中同时有供暖、通风、空调等两个及以上的不同系统时，应进行系统编号。

2、暖通空调系统编号、入口编号，应由系统代号和顺序号组成。

3、系统代号用大写拉丁字母表示，顺序号用阿拉伯数字表示。当一个系统出现分支时，可采用下图的画法。

系统代号

立管号的画法

竖向布置的垂直管道系统，应标注立管号，在不一致引起误解时，可只标注序号，但应与建筑轴线编号有明显区别。

立管号的画法

管道相对标高的画法：

1、在无法标注垂直尺寸的图样中，应标注标高。标高应以m为单位，并应精确到cm或mm。

2、标高符号应以直角等腰三角形表示。当面标准层较多时，可只标注与本层楼（地）板面的相对标高。

3、水、汽管道所标高未予说明时，应表示为管中心标高。

4、水、汽管道标注管道外底或顶标高时，应在数字前加“底”或“顶”字样。

5、矩形风管所注标高应表示管底标高；圆形风管所注标高应表示管中心标高。当不采用此方法标注时，应进行说明。

6、平面图中无坡度要求的管道标高可标注在管道截面尺寸后的括号内。必要时，应在标高数字前加“底”或“顶”的字样。

相对标高的画法

管道截面尺寸的标注符号及画法：

1、低压流体输送用焊接管道规格应标注公称通径或压力。公称通径的标记应由字母“DN”后跟一个以亳米表示的数值组成；公称压力的代号应为“PN”。

2、输送流体用无缝钢管、螺旋缝或直缝焊接钢管、铜管、不锈钢管，当需要注明外径和壁厚时，应用“D（或Φ）外径×壁厚”表示。在不致引起误解时，也可采用公称通径表示。

3、塑料管外径应用“de”表示。

4、圆形风管的截面定型尺寸应以直径“Φ”表示，单位应为mm.

5、矩形风管（风道）的截面定型尺寸应以“A×B”表示。“A”应为该视图投影面的边长尺寸，“B”应为另一边尺雨。A、B单位均应为mm。

6、水平管道的规格宜标注在管道的上方；竖向管道的规格宜标注在管道的左侧。双线表示的管道，其规格可标注在管道轮廓线内。

管道截面尺寸的画法

多条管线的规格标注方法：

多条管线规格的画法

风口、散流器表示方法：

风口、散流器的表示方法

定位尺寸的表示方法：

定位尺寸的表示方式

单线管道转向的画法：

单线管道转向的画法

双线管道转向的画法：

双线管道转向的画法

单线管道分支的画法：

单线管道分支的画法

双线管道分支的画法：

双线管道分支的画法

送风管转向的画法：

送风管转向的画法

回风管转向的画法：

管道断开的画法

平面图、剖视图中管道因重叠、密集需断开时，应采用断开画法。

管道断开的画法

管道在本图中断的画法：

管道在本图中断，转至其他图面表示（或由其他图面引来）时，应注明转至（或来自的）的图纸编号。

管道在本图中断的画法

管道交叉的画法：

管道交叉的画法

管道跨越的画法：

管道跨越的画法

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瞿梵姣3336结构图纸中,直接写梁顶标高负1.15和梁标注下面括号中负1.15有区别吗? -
毕雨贩13625647733 ______ 结构图纸中,直接写梁顶标高负1.15和梁集中标注的(﹣1.15)没有区别. 但你问:结构图纸中,直接写梁顶标高负1.15和梁标注下面括号中负1.15有区别吗?这“梁顶标高”和“梁标注下面”表达得不太清楚!如能把该梁的梁集中标注传张截图上来?那么就好确认定我的回答,对与否了.

瞿梵姣3336如何看建筑施工图中的标高 -
毕雨贩13625647733 ______ 只要找到标高符号即可(如下图),在施工图中经常有一个小小的直角等腰三角形,三角形的尖端或向上或向下,这是标高的符号,用细实线绘制、高为3mm的等腰直角三角形. 标高符号的尖端应指至被标注的高度位置,尖端可向上,也可向...

瞿梵姣3336这个图纸上设计高程括号里面还有个,是什么意思?两个设计高程? -
毕雨贩13625647733 ______ 没头没尾的,在竖曲线上么

瞿梵姣3336建筑图中标高括弧里面的数表示什么?求指教 -
毕雨贩13625647733 ______ 你这是总体施工图上的,大概是-2.80相当于绝对标高(黄海高程)24.20m,即±0.00相当于绝对标高27.00m.

瞿梵姣3336图纸标高括号中什么意思例如:6.200<255.800>? -
毕雨贩13625647733 ______ 相对±00标高数值

瞿梵姣33365和标高3.5(结)分别是什么意思,具体含义是什么. -
毕雨贩13625647733 ______[答案] 在建筑方便的施工图纸中经常会看到3.5(结) 或者3.5(建) , 一般分专业的图纸好比建施或者结施图纸中 只会标注+3.500 不会加注括号 ,因为+3.500已经是属于结构或者建筑标高了.在不明确专业的图纸好比说施工图,图纸上面会出现带括号的...

瞿梵姣3336如何看施工图上的标高 -
毕雨贩13625647733 ______ 一个是绝对标高,一个是相对标高,主要是先看设计说明,里面会说明关于标高方面的.

瞿梵姣3336CAD中括号里的标高怎样理解 -
毕雨贩13625647733 ______ 你是甚么图纸?比如建筑图标题写的1至3层的话,那末括号里面的就应当是2层或3层的标高

瞿梵姣3336 - 1.4(92.3)这个建筑标高括号里面指的应该就是对 - 1.4米这里的解释吧? - 1.4(92.3)这个建筑标高括号里面指的应该就是 - 1.4米这里的标高(发现每栋楼正负零... -
毕雨贩13625647733 ______[答案] -1.4应该是建筑物某层的相对标高,后面的就是:这个标高相当于92.3m的黄海高程

瞿梵姣3336非框架梁集中标注小括号里的小数在非框架梁中,图纸集中标注最后有一个括号.里面写了个小数有的还是负数( - 0.040)或者( - 0. -
毕雨贩13625647733 ______[答案] 意思是梁顶标高比板顶标高(结构标高)低0.04m,或0.09m,如果板顶标高有多个,以“默认板顶标高为准”,一般板图纸上会注明比如:“未标注的板顶标高为13.700m”,这个13.700就是默认板顶标高. 看一下03g101-1第25页左上角吧. 不管是...