3. 垫层混凝土施工完以后将轴线投测到垫层表面，找平垫层表面后用红油漆

3. 垫层混凝土施工完以后将轴线投测到垫层表面，找平垫层表面后用红油漆标好墙柱中心线和模板边线位置。6.3.3基础钢筋工程 1
范围本工艺标准适用于工业与民用建筑现浇钢筋混凝土结构中直径14～40mm的ⅠⅢ级钢筋在垂直位置、水平 位置或倾斜位置的对
接连接。 当两钢筋直径不同时，也可用气压焊连接，但其两直径之差不得大于7mm。 2 施工准备 2.1 材料及主要机具； 2.1.1 钢筋
：钢筋的级别、直径必须符合设计要求，有出厂证明书及复试报告单。 进口钢筋还应有化学复试单，其化学成分应满足焊接要求
，并应有可焊性试验。 2.1.2 氧气（O2）：气压焊采用氧气纯度应该 在99.5%以上，质量符合GB3863中Ⅰ类或 Ⅱ类一级的技术要求

結果 (中文) 3:

3 after the cushion concrete construction will end axis projection to the surface of cushion, cushion leveling surface with red paint marking the wall column centerline and sideline template. 6.3.3 1
foundation reinforcement engineering scope of this technology is applicable to industrial and civil buildings in the cast-in-place reinforced concrete structure with the diameter of 14 to 40mm grade 1 in the vertical position, horizontal or inclined position of
connection. When the two bar diameter is not at the same time, can also be used in gas pressure welding connection, but the two diameter difference of not more than 7mm. 2 to 2.1 of construction materials and major equipment; reinforced 2.1.1
: steel grade, diameter must meet the design requirements,Ex factory certificate and retest report. Imports of steel should have the chemical composition of single chemical examination, should meet the requirements of welding
, and should solderability test. 2.1.2 (O2): oxygen pressure welding with oxygen purity should be above 99.5%, the quality to meet the requirements of class I or II GB3863 in the level of Technology