The key points of quality introspection of reinforcing steel engineering include three aspects:

　　1、原材料

　　1. Raw materials

　　2、鋼筋加工

　　2. Processing of Reinforcement Bars

　　3、鋼筋裝置

　　3. Reinforcement device

　　鋼筋工程質量規范及查驗辦法應施行《混凝土構造工程施工質量驗收規范》(GB 50204—2002)中有關鋼筋局部規則。

　　The local rules of reinforcement in Code for Acceptance and Acceptance of Construction Quality of Concrete Structural Engineering (GB 50204-2002) should be implemented in the quality specification and inspection method of reinforcement engineering.

　　原材料抽檢：

　　Raw Materials Sampling Inspection:

　　鋼筋出場時，應按GB1499等的規則抽取試件作力學 反省產物合格證、出功能實驗，其質量必需契合有關規范的規則。

　　When reinforcing bars appear in the field, the specimens should be selected according to GB1499 rules for mechanical introspection product certification and function test, and their quality must conform to the rules of relevant norms.

　　有抗震請求的框架構造：

　　Frame structures with seismic requests:

　　對有抗震設防請求的框架構造，其縱向受力鋼筋的一強度應滿意設想請求。當設想無詳細請求時，對一，二級抗震品級，查驗所得的強度是實測值應契合以下規則：（1）鋼筋的抗拉強度實測值與屈從強度實測值的比值不該小于1.25；（2）鋼筋的屈從強度實測項值與強度規范值的比值不該大于1.3。

　　For frame structures with seismic fortification requests, the strength of longitudinal steel bars should satisfy the assumption request. When there is no detailed requirement, the strength of the first and second magnitude seismic grade should conform to the following rules: (1) the ratio of the measured tensile strength to the measured yield strength should not be less than 1.25; (2) the ratio of the measured yield strength to the strength specification should not be greater than 1.3.

　　化學身分專項查驗：

　　Special Chemistry Identification Examination:

　　當發明鋼筋脆斷、焊接功能不良或力學功能明顯不反省化學身分等專項目一般等景象時，應對該批鋼筋實行化學身分查驗或其查驗陳述或其他專項查驗。

　　When special items such as brittle fracture of reinforcing bars, poor welding function or obvious mechanical function do not reflect on chemical identity are invented, chemical identity checking or its statement or other special checking should be carried out for these reinforcing bars.

　　受力鋼筋彎鉤和彎折：

　　Bending hooks and bending of stressed steel bars:

　　（1）HPB235級鋼筋結尾應作180度彎鉤，其彎弧內直不該小于鋼筋直徑2.5倍，彎鉤的彎后平直局部長度不該小于鋼筋直徑的3倍。

　　(1) The end of HPB235 grade steel bar should be 180 degree bending hook. The straight in the bending arc should not be less than 2.5 times the diameter of steel bar, and the local length of the straight after bending hook should not be less than 3 times the diameter of steel bar.

　　（2）當設想請求鋼筋結尾需作135度彎鉤時，

　　(2) When it is assumed that a 135 degree bending hook is required at the end of the reinforcing bar,

　　HRB335級，HRB400級鋼筋的彎弧內間接不該小于

　　HRB335 and HRB400 steel bars should not be less than or less indirectly in bending arc.

　　鋼筋直徑的4倍，彎鉤的彎后平直局部長度應契合設想請求。

　　Four times the diameter of the reinforcing bar, the local length of the bending hook after bending should meet the requirements of the assumption.

　　（3）鋼筋作不大于90度的彎折時，彎折處的彎弧內直徑不該小于鋼筋直徑的5倍

　　(3) When the steel bar is bent not more than 90 degrees, the diameter in the bending arc should not be less than 5 times of the diameter of the steel bar.

　　箍筋結尾彎鉤：

　　Stirrup end hook:

　　除焊接封鎖環式箍筋外，箍筋的結尾應做彎鉤，彎鉤方式應契合設想請求；當設想無詳細請求時，應契合下一列規則：（1）箍筋彎筋的彎弧內直徑除應滿意本表主控般項目第4項的規則外，尚應不小于受力鋼筋直徑；（2）箍項筋彎鉤的彎折角度；對普通構造，不該小于90度；對有抗目震請求的構造，應為135度；（3）箍筋彎后平直局部長度；對普通構造，不宜小于箍筋直徑的5倍，對有抗震等請求的構造，不該小于箍筋直徑的10倍。

　　In addition to welding blocking ring stirrups, the end of the stirrups should be bent hooks, and the way of bending hooks should meet the requirements of the assumption; when there is no detailed requirement for the assumption, the following rules should be followed: (1) the diameter of the bending arc of the stirrups should not be less than the diameter of the stressed steel bars, except for the rule of Item 4 of the main control item in this table; (2) the bending angle of the stirrups hooks; for ordinary structures, it should not be used. For structures requiring anti-seismic, it should be 135 degrees; (3) the local length of stirrups should be straight after bending; for ordinary structures, it should not be less than 5 times the diameter of stirrups; for structures requiring anti-seismic, it should not be less than 10 times the diameter of stirrups.

　　鋼筋外表質量：

　　Exterior quality of reinforcing bars:

　　筋應平直、無損傷，外表不得有裂紋、油垢、顆粒狀或片狀老銹。

　　The tendons should be straight and undamaged. No cracks, grease scale, granular or flaky rust should be found on the surface.

　　鋼筋調直：應契合設想要乞降線行有關規范的規則。

　　Reinforcement straightening: It should be in accordance with the rules of relevant norms for begging and landing lines.