房建工程施工工艺标准化做法实施图集

房屋建筑施工工艺标准化

做法实施图集(试行)山东港湾建设集团有限公司城建分公司施工工艺标准化做法实施图集前言

为全面贯彻落实港湾建设集团“双提升”活动要求，加强技术质量体系标准化建设，实现施工工艺标准化，安全技术部整合现有资源，结合分公司实际情况，编制了《房屋建筑施工工艺标准化做法实施图集汇编》，形成具有分公司特色的施工现场标准化作业图集，规范提升分公司的现场标准化作业水平。

该汇编以规范化、标准化为出发点，力求统一性和可操作性，以实际工程中细部节点的典型做法为编写原则进行编写，内容共包括模板工程、钢筋工程、混凝土工程、砌体工程、装饰装修工程、防水（防渗）工程、屋面工程、安装工程八大部分。旨在突出现有国家规范、标准中未表述或表述不清的典型做法，以及分公司所总结的具有很强实操性、可靠性、通用性的工艺做法。

由于时间仓促，编者水平有限，不妥之处恳请各单位在使用的过程中进行批评指正，我们收集反馈意见后，将及时修订完善，切切实实达到施工工艺标准化做法实施编制的初衷。施工工艺标准化做法实施图集目录第一章

模板工程1、柱模板放线及加固···········································································································································································22、墙板模板加固···················································································································································································33、标准层梁、板加固体系···································································································································································44、梁柱接头处理···················································································································································································55、剪力墙接茬处理···············································································································································································66、模板验收···························································································································································································77、楼梯模板加固···················································································································································································88、降板模板加固···················································································································································································99、楼板后浇带······················································································································································································10第二章

钢筋工程1、柱钢筋绑扎······················································································································································································122、剪力墙钢筋绑扎··············································································································································································133、楼板钢筋绑扎·················································································································································································144、钢筋直螺纹加工·············································································································································································155、钢筋直螺纹验收·············································································································································································166、钢筋成品保护·················································································································································································17第三章

混凝土工程1、混凝土浇筑······················································································································································································19施工工艺标准化做法实施图集目录2、混凝土止水台··················································································································································································203、混凝土施工缝处理··········································································································································································214、试块制作及养护··············································································································································································225、混凝土成型质量··············································································································································································236、混凝土实测实量··············································································································································································247、混凝土成品保护··············································································································································································25第四章

砌块工程1、

构造柱节点·····················································································································································································272、墙面线槽开槽及修补······································································································································································283、预制构件··························································································································································································294、砌筑实测实量··················································································································································································30第五章

装饰装修工程1、抹灰基层处理··················································································································································································322、外窗企口··························································································································································································333、抹灰实测实量··················································································································································································344、外墙施工··························································································································································································355、吊顶施工··························································································································································································36施工工艺标准化做法实施图集目录第六章

防水（防渗）工程1、外墙穿墙管道防渗漏·····································································································································································382、套管预埋防渗漏·············································································································································································393、门窗塞缝防渗漏·············································································································································································404、女儿墙防水收头·············································································································································································415、出屋面管道收头做法·····································································································································································426、止水螺栓处防水做法·····································································································································································437、止水钢板节点·················································································································································································448、防水试验·························································································································································································45第七章

屋面工程1、出屋面结构做法············································································································································································472、屋面变形缝做法············································································································································································483、暗埋式排气孔做法········································································································································································49第八章

安装工程1、屋面避雷带安装·············································································································································································512、桥架安装要求·················································································································································································523、设备及通风消防安装·····································································································································································53施工工艺标准化做法实施图集•模板工程1第一章

模板工程施工工艺标准化做法实施图集•模板工程标准要点：柱模板放线及加固图示1、混凝土浇筑完毕后，在混凝土终凝后安排专人对墙柱进行凿毛。2、施工测量人员测放控制线完毕后，由质检人员复测，检查钢筋偏位情况。3、根据定位控制线放出

200mm

模板控制线。4、最后放出模板定位线。5、杜绝杂物入模，并严禁在操作层上设置木作台锯进行模板加工。框架柱定位框架柱模板立面柱模加固实体2施工工艺标准化做法实施图集•模板工程标准要点：墙板模板加固1、模板加固要求编制专项施工方案，计算模板螺杆的加固间距。螺杆、螺帽及

3

型卡要配套使用。2、支撑体系不得采用扣件支承荷载，应在立杆顶面设置可调托座（顶托）直接传力。3、为防止墙柱漏浆烂根、胀模，墙柱底部采用角钢封堵。墙模板模拟图竖向模板底部角钢封堵3图示墙模板实物图施工工艺标准化做法实施图集•钢筋工程标准要点：标准层梁、板加固体系1、标准层模板支撑必须编制专项施工方案。2、立杆间距、横杆步距、剪刀撑、扫地杆、顶托等必须按照方案执行；立杆下必须设置垫块，垫块的厚度不小于50mm，边长不小于200mm。3、梁底可调托座（顶托）与钢管立杆交接处应设置横向水平杆，托座（顶托）距离水平杆的高度不应大于200mm。梁宽超过400mm时，梁底应增设立杆，并不得采用单立杆，应至少设置双立杆及以上立杆。梁高超过550mm应采用对拉螺杆加固，纵横间距不大于500mm。4、统一要求使用盘扣式脚手架。盘扣脚手架支撑实物图4图示盘扣脚手架支撑实物图施工工艺标准化做法实施图集•模板工程标准要点：梁柱接头处理1、梁柱接头部位，柱模板必须整板套割，由四块开豁口模板组成，下包

600-800mm，确保混凝土成型质量。梁柱接头模板模拟图梁柱接头模板实物图5图示施工工艺标准化做法实施图集•模板工程标准要点：剪力墙接茬处理1、在下层混凝土浇筑时注意预留保护好最上排螺杆眼，用于固定上层剪力墙模板。2、下层剪力墙模板最上排螺杆布置在距混凝土楼板下表面下

50mm

处。3、下层外模板拆除，注意避免最上排螺杆断裂在螺杆眼中无法取出。4、上层墙板的支设时，外侧次龙骨木方向下部延伸，利用原混凝土最上排螺杆眼穿螺杆锁住木方及模板，避免漏浆。5、施工层外墙模板合模之前，用海绵条沿外墙边粘贴一圈。6预埋应用模拟图节点图接茬部位效果图图示接茬部位效果图施工工艺标准化做法实施图集•钢筋工程标准要点：模板验收1、模板搭设完毕必须由项目施工员/技术员进行验收。2、检查垂直度前首先对其控制线进行复核，在进行垂直度检查。3、验收模板平整度、板缝、标高、螺杆间距及螺帽紧固力矩、墙柱底部是否干净及根部是否采用角钢封堵等。7图示模板检查验收表楼层面板安装图楼层墙板安装图施工工艺标准化做法实施图集•模板工程标准要点：楼梯模板加固1、模板应每层清理干净，涂刷脱模剂。2、模板拼装接缝需严密，并留设清扫口。3、敞开式楼梯踏步模板固定木方不少于两排。4、楼梯踏步板施工缝应留置在上三步处，截面垂直与斜板模板，缝封口模板宽度80-100mm。

5、为保证混凝土成型质量，当楼梯模板为封闭式模板时应留设振捣口及排气孔。8封闭式楼梯模板清扫口留设图示上返三步处施工工艺标准化做法实施图集•模板工程标准要点：降板模板加固1、采用方管+木模板组装的定型化模板支撑。2、在龙骨侧立面和底面固定一条竹胶板，底面的固定在方管上，侧面的采用铁丝固定。3、拆模时将铁丝剪断，将侧面模板留下，其余周转使用。9定型化模板实物图定型化模板实物图图示拆模效果施工工艺标准化做法实施图集•模板工程标准要点：楼板后浇带1、后浇带的支撑体系必须单独设置，与主体结构支架分离，在主体结构支架拆除时保留，在后浇带施工完毕，强度达到100%后，方可拆除。严禁拆除后回顶。2、后浇带模板支设时，在后浇带模板两侧沿长向各通长设置一100mm

宽活动模板，形成两道清扫口。5、两侧混凝土浇筑完毕后应及时设置防护盖板，封闭保护。后浇带支撑实物图清扫口与盖板示意图10图示施工工艺标准化做法实施图集•钢筋工程第二章

钢筋工程11施工工艺标准化做法实施图集•钢筋工程标准要点：柱钢筋绑扎1、柱钢筋尺寸定位采用制作的柱筋定位框的方式进行，定位卡钢筋中心间距为定位钢筋直径加卡筋直径加3mm。2、当柱截面尺≤700mm×700mm时，采用Ⅰ型柱筋间距控制；当柱截面尺寸700—1200mm时，采用Ⅱ型柱筋间距控制；当大1200mm时，应对定位框刚度进行设计核算确定。

12Ⅰ型柱筋间距控制示意图Ⅱ型柱筋间距控制示意图柱钢筋定位实例图1柱钢筋定位实例图2图示施工工艺标准化做法实施图集•钢筋工程标准要点：剪力墙钢筋绑扎图示1、为避免剪力墙、柱钢筋移位，要求至少设置两道水平定位钢筋。2、为保证竖向墙体筋的间距和排距及墙筋保护层厚度准确，在每层墙体的上口

500mm~1000mm

处设置一道水平向梯子筋。3、水平梯子筋待楼层混凝土浇筑完成后，楼板达到1.2MPa后，方可拆下可重复使用。水平定位筋示意图13水平梯子筋实物图施工工艺标准化做法实施图集•钢筋工程标准要点：楼板钢筋绑扎1、为保证楼板钢筋绑扎排布均匀，先进行楼板钢筋划线。2、马凳筋置于两层钢筋之间，底部做好防锈处理。3、筏板基础、较厚楼板楼板可采用可分为工字形、几字形钢筋马凳。4、马凳设置间距宜为1.5m一道，呈梅花形布置。14马镫样式示例图钢筋马镫样式示例图图示施工工艺标准化做法实施图集•钢筋工程标准要点：钢筋直螺纹加工

1、钢筋切口的端面应与轴线垂直，不得有马蹄形或弯曲，应采用砂轮切割机或用半圆型切割刀对钢筋端部切平。2、直螺纹加工完成后使用止规、通规进行抽查。3、检验合格的丝头应加以保护，在其端头加盖保护帽，按规格分类堆放整齐。4、钢筋直螺纹套筒采用管钳与力矩扳手进行施工，将两个丝头在套筒中间位置相互顶紧。15图示施工工艺标准化做法实施图集•钢筋工程标准要点：钢筋直螺纹验收1、现场检查直螺纹连接，连接充分拧紧，完毕后，两端外露丝扣均等，不得超过2个完整丝扣。2、连接强度采用力矩扳手进行检查。3、现场检查完的直螺纹接头应做好区分，对于检查合格的用黑色油性笔标注，对于检查不合格的用红色油性笔标注，不合格的直螺纹接头整改合格后重新用黑色笔标注。16验收的钢筋做好标记力矩扳手抽查验收力矩扳手图示施工工艺标准化做法实施图集•钢筋工程标准要点：钢筋成品保护1、严禁混凝土浇筑过程中踩踏钢筋，必须采用钢制马道行走，马凳尺寸为500×400mm，采用50×50mm方管焊接组装，表面喷涂防锈漆。2、定型化人行通道可有效的保护已绑扎好的顶板钢筋，同时方便作业人员行走、为施工提供便利，可周转使用。17成品方管马道图示施工工艺标准化做法实施图集•混凝土工程第三章

混凝土工程18施工工艺标准化做法实施图集•混凝土工程标准要点：混凝土浇筑1、混凝土进场后主要核对标号，进行塌落度试验。2、混凝土浇筑过程中，必须采用连续供料，防止出现冷缝。3、混凝土运输、输送、浇筑过程中严禁加水；散落的混凝土严禁用于结构浇筑。4、在第一次收面后，砼初凝前进行第二次压实，采用塑料布覆盖养护。19刷毛覆膜薄膜覆盖养护二次压实图示塌落度测量施工工艺标准化做法实施图集•混凝土工程标准要点：混凝土止水台1、有防水要求的房间楼板四周应设现浇混凝土止水台。2、混凝土止水台高度不小于200mm，宽度与墙厚相同，且应与楼板同时浇筑，振捣密实。3、在止水台模板下面龙骨的底端预留一块长于龙骨2CM的竹胶板，为浇筑砼时找平使用。4、在加固模板时，加固用的模板/固定螺栓不得紧挨着顶面，以方便进行混凝土压光。5、水电班组在止水台模板上预留线槽，要按图纸要求预留，位置正确，且垂直。20止水台模板支设实图止水坎浇筑后实图图示止水台模板支设实图止水台浇筑后实图施工工艺标准化做法实施图集•混凝土工程标准要点：混凝土施工缝处理1、混凝土达到1.2MPa

时方可进行剔凿，禁止提前剔凿。2、水平施工缝：浇筑新混凝土之前，弹线切割后用錾子剔除施工缝部分表面浮浆和松散的混凝土，并用清水清洗同时加以湿润，浇筑时，表面不得留有明水。3、竖向施工缝：应对先施工混凝土进行弹线并用切锯切割10mm，再进行凿毛处理，用清水清洗同时加以湿润，新砼浇筑时，施工缝表面不得留有明水。21水平施工缝处理做法实例图

竖向施工缝处理做法实例图

水平施工缝处理做法图示施工工艺标准化做法实施图集•混凝土工程标准要点：试块制作及养护1、试块制作：做好标识，包括施工部位、强度等级、制作日期。2、标准养护试块应送入标养室/箱进行养护且间距保持10mm-20mm，养护室/箱温度控制在

20±2℃，湿度控制在95%以上。3、同条件试块与现场同时进行养护，放置在试块笼里面，宜放置在每层楼面靠近楼梯的醒目位置。22图示标养室试块存放同条件试块存放砼试块标识施工工艺标准化做法实施图集•混凝土工程标准要点：混凝土成型质量1、混凝土构件应内实外光、表面平整、棱角方正。2、墙板线条平整、无蜂窝麻面、无烂根、涨模。3、楼板表面平整、无脚印。23结构柱混凝土观感质量梁、板混凝土观感质量剪力墙混凝土观感质量楼梯混凝土观感质量图示施工工艺标准化做法实施图集•混凝土工程标准要点：混凝土实测实量241、混凝土浇筑完毕拆模后进行实测实量。2、实测实量检查表测量数据详实，填写完整。3、统一实测实量检查表，进一步促进实测实量工作标准化、规范化。4、实测实量设置样板间，样板间宜设置在一层至三层。平整度测量示意垂直度测量示意图示施工工艺标准化做法实施图集•混凝土工程标准要点：混凝土成品保护1、混凝土浇筑后在未达到设计强度前禁止在楼板集中堆放模板、钢管等集中荷载。2、结构楼板禁止随意开槽、开洞。3、混凝土模板拆除时注意保护阴阳角，对柱角和剪力墙角进行成品保护。4、结合项目特点，在通道口、楼梯口对其阳角进行保护。25墙、柱阳角保护楼梯踏步保护图示施工工艺标准化做法实施图集•砌块工程第四章

砌块工程26施工工艺标准化做法实施图集•砌块工程标准要点：构造柱节点做法1、填充墙构造柱两侧应砌成马牙槎，马牙槎凹凸尺寸不宜小于60mm，高度不宜超过300mm，马牙槎应先退后进，对称砌筑。2、构造柱支模前在两侧贴海绵条，底部用砂浆座浆，防止漏浆。3、模板加固采用对拉螺杆，对拉螺栓距离上下各

150mm，中间距离不大于

600mm。4、填充墙砌筑接近梁板底时，应留一定空间（30-50mm），至少间隔7d后，再将其补砌挤紧。5、补砌时对双侧竖缝用干硬性C25膨胀细石混凝土填塞（防腐木楔@600mm挤紧）27图示砌体工艺样板图砌体现场施工图施工工艺标准化做法实施图集•砌块工程标准要点：墙面线槽开槽及修补1、严禁水平切槽。

2、切槽前应先弹线，保证边缘整齐，线槽顺直。

3、切槽深度应保证管线埋设后距表面不小于20mm。且不得超过100mm。4、线槽宽度＜100mm的采用水泥砂浆填充，宽度≥100mm的采用细石混凝土填充。填充应密实，表面抹平。5、填充之后线槽位置应挂网加固，每边宽出线槽至少

100mm。

28图示墙面切槽实物线槽抹灰挂网墙面切槽样板施工工艺标准化做法实施图集•砌块工程标准要点：预制构件1、二次结构砌筑过程中，电箱、内外墙空调预留洞口可提前预制构件，与砌筑同步进行安装。2、预制混凝土块强度等级

C20，为保证效果，需拆模、养护到满足使用要求后方可用于砌筑。3、预制混凝土块应标明内外，以免砌墙时出错。29图示施工工艺标准化做法实施图集•砌块工程标准要点：砌筑实测实量30砌体墙平整度测量示意砌筑墙体垂直度测量示意1、砌筑完毕后进行实测实量。2、实测实量检查表测量数据详实，填写完整。3、统一实测实量检查表，进一步促进实测实量工作标准化、规范化。4、实测实量设置样板间，样板间宜设置在一层至三层。图示施工工艺标准化做法实施图集•装饰装修工程第五章

装饰装修工程31施工工艺标准化做法实施图集•装饰装修工程标准要点：抹灰基层处理1、抹灰前先将基层清理干净，不同界质之间挂好热镀锌钢丝网，每边长度不小于

100mm；2、先浇水湿润墙面，后甩浆。甩浆量不小于墙面面积的80%，确保甩浆均匀，毛刺明显，甩浆后洒水养护至少2天。3、墙面根据面积大小贴灰饼，灰饼宜用

1:3

水泥砂浆做成

50mm

见方，间距一般为1.5~1.8

米。4、当灰饼七成干时，可以采用相同强度的砂浆冲筋，宽度为

50mm，墙高小于

3.5

米，做立筋，大于

3.5

米，做横筋，间距控制在

1.8米以内。5、抹灰厚度超过

35mm要增设一道钢丝网。32不同介质钢丝网甩浆灰饼图示冲筋施工工艺标准化做法实施图集•装饰装修工程标准要点：外窗企口1、抹灰施工时，通过抹灰层厚度的控制做出窗下口部位的企口，企口高度为15-30mm。2、本做法除厨房、卫生间、阳台外适合所有外墙窗口。3、企口施工由内墙抹灰单位施工，窗外找坡部分由外墙抹灰单位施工。4、内墙抹灰施工长度需要根据项目实际情况，结合外墙保温厚度进行确定。33抹灰后企口图图示施工工艺标准化做法实施图集•装饰装修工程标准要点：抹灰实测实量34抹灰工程墙面平整度测量示意抹灰工程墙体垂直度测量示意1、抹灰成型后进行实测实量。2、实测实量检查表测量数据详实，填写完整。3、统一实测实量检查表，进一步促进实测实量工作标准化、规范化。4、实测实量设置样板间，样板间宜设置在一层至三层。图示施工工艺标准化做法实施图集•装饰装修工程标准要点：外墙施工1、外墙无保温时，外窗外侧上口宜采用成品滴水槽，滴水线流水坡度应不小于5%，2、外墙有保温时，外窗外侧上口宜采用鹰嘴(上口保温板可采用外厚内薄的保温线条)，嘴向下找坡不应小于10%。3、外墙施工阶段，外窗台采用抗裂砂浆收口，向外找坡(坡度5%-10%)，然后进行外墙面层施工。35图示外窗上口鹰嘴做法外窗上口滴水槽做法外窗下口找坡做法施工工艺标准化做法实施图集•装饰装修工程标准要点：吊顶施工1、吊顶中各类终端设备口排列应整体规划，居中对称，间距均匀，成行成线。2、当吊顶采用块材材料时（模数匹配），应做到墙、地、顶面对缝。3、采用石膏板吊顶，吊顶与墙面接缝部位设凹槽连接，可有效解决接缝处裂缝现象。4、装饰阳角三线交于一点。36图示三线交于一点墙、地、顶面对缝施工工艺标准化做法实施图集•防水（防渗）工程第六章

防水（防渗）工程37施工工艺标准化做法实施图集•防水（防渗）工程标准要点：外墙穿墙管道防渗漏1、外墙为砌体时，为保证穿墙套管节点的防渗漏效果，在管道位置必须用预制混凝土块代替砌块。不得在砌体墙上直接开洞。2、预制混凝土块强度等级C20，厚同墙厚，长、宽减去套管尺寸后均不得小于200mm，并符合砌块模数；预制混凝土块时须预埋套管，套管材质为金属或塑料，套管应内高外低，长度与装修完成后墙厚，两端与墙面齐平，预制混凝土块应标明内外，以免出错。3、对于小管径管道，其套管管径应比管道管径大两个规格；对于大管径管道，其套管管径应大于管道外径50mm。4、管道与管道之间的缝隙应用柔性阻燃材料密实填充，端部采用密封胶封闭严密，且端面应光滑，管道接口不得设在套管内。38图示施工工艺标准化做法实施图集汇编•防水（防渗）工程标准要点：套管预埋防渗漏1、所有穿越地下室外墙的管道和管线及水池、屋面的管道均按刚性防水套管制作预埋，防水套管的规格要比实际管道的管径大2-3号。2、穿越人防楼板、人防墙体及人防扩散室等的管道、管线及测压管等应随结构预埋密闭套管，套管的预埋高度要跟图纸吻合。3、管道穿楼层处的钢套管，高出地坪（完成面）20mm。4、排水管穿楼板使用成品止水节预埋套管，取代了传统需要留洞,补洞（吊模）的复杂工序,完全解决了排水管安装必留预留洞施工繁琐的问题。安装较为方便快捷,省工,省料。39套管穿普通房间（楼板）示意图套管穿多水房间（楼板）示意图现场使用效果图止水节预埋套管图示施工工艺标准化做法实施图集•防水（防渗）工程标准要点：门窗塞缝防渗漏1、清理窗与墙体连接之间缝隙，应做到缝隙之间无木屑、碎砖头、包装纸等杂物，墙体基体表面应做到平整，对存在的墙体孔洞进行修复。2、窗下口及侧下方300mm范围内塞缝采用1：2干硬性水泥砂浆填塞，加5%防水剂(没有防水要求的门窗可不掺防水剂)：砂浆塞逢时，应注意保证墙体基体为湿润，在填充时应不断进行砂浆的压实，以保证缝隙内饱满，不形成空鼓现象。3、窗上口及两侧边剩余部分采用聚氨酯发泡胶塞缝，发泡胶施打必须连续、饱满。40外窗四周缝隙填充示意图窗下口塞缝做法图示窗侧/上口塞缝做法施工工艺标准化做法实施图集•防水（防渗）工程标准要点：女儿墙防水收头1、防水卷材收头高度位置，一律要求在墙面留设凹槽。2、钢筋混凝土结构表面凹槽高60mm，深30mm；砌体表面凹槽高60mm，深60mm。3、防水卷材卷入凹槽内，用金属压条及水泥钉固定，嵌上密封材料。4、对于高度较小的突出物，不能满足防水卷材上卷高度的，可在突出物顶部平面上对卷材进行收头，卷材翻卷到平面的宽度≥100mm，用水泥钉和金属压条进行固定。41图示施工工艺标准化做法实施图集•防水（防渗）工程标准要点：出屋面管道收头做法1、卷材上返出屋面管道及设备基础的高度≥250mm。2、屋面防水卷材外墙上返高度≥250mm，并采用金属压条及水泥钉固定。3、上返高度250mm为装修做法层以上，防水卷材施工时需考虑后期装修做法高度。42图示施工工艺标准化做法实施图集•防水（防渗）工程标准要点：止水螺栓处防水做法1、剔除塑料垫块，割除多余螺杆将螺杆从凹的最深处割除。浇水湿润，清除孔内杂物。2、用防水砂浆封堵内外侧螺杆孔凹槽，并压实抹平。3、采用聚氨酯防水涂料进行外墙螺杆孔涂刷，涂刷分3次进行，第一遍为黑色，以螺杆孔中心涂刷160mm圆形状，第二遍为白色，以螺杆孔中心涂刷100mm圆形状，第三遍为红色，以螺杆孔中心涂刷60mm圆形状，聚氨酯涂刷厚度不小于1mm。4、普通内墙对拉螺栓(含地上外墙内侧)孔洞处理：将孔洞处理干净后，用高强发泡剂填充，孔洞面层均采用25mm厚1:2.5微膨胀水泥砂浆封堵平整。43螺栓孔封堵实物图示细部做法示意图三段式止水螺杆构件止水螺杆构件示意图施工工艺标准化做法实施图集•防水（防渗）工程标准要点：止水钢板节点1、

止水钢板转角位置，应采用成品构件。焊缝距离拐点或交点不小于

600mm。2、被止水钢板切断的钢筋，应将钢筋弯折之后与止水钢板进行焊接。3、止水钢板搭接焊接时，搭接长度不小于20mm，两块钢板之间的焊接要饱满且为双面焊，也可采用三面围焊，搭接不小于100mm，焊缝连续严密。4、异型止水钢板必须提前在场外预制加工。44图示施工工艺标准化做法实施图集•防水（防渗）工程标准要点：防水试验1、屋面、厨房、卫生间、阳台等有防水要求的部位在防水工程施工前必须