When making reinforcing bars, we should check the processing tables and design drawings, check whether there are errors and omissions in the cutting tables, and check whether each reinforcing bar meets the requirements according to the cutting tables. After these two checks, we can put out the actual samples according to the cutting tables. After trial production, we can make the reinforcing bars in batches. The processed reinforcing bars should be listed and stacked orderly.

　　施工中如需要鋼筋代換時，必須充分了解設計意圖和代換材料性能，嚴格遵守現行鋼筋砼設計規范的各種規定，并不得以等面積的高強度鋼筋代換低強度的鋼筋。凡重要部位的鋼筋代換，須征得甲方、設計單位同意，并有書面通知時方可代換。

　　If steel bar replacement is needed in construction, it is necessary to fully understand the design intent and performance of replacement materials, strictly abide by various provisions of the current design code for reinforced concrete, and not to replace low strength steel bar with high strength steel bar of equal area. Replacement of reinforcing bars in important parts shall be subject to the consent of Party A and the design unit, and may only be done with written notification.

　　(1)鋼筋表面應潔凈，粘著的油污、泥土、浮銹使用前必須清理干凈，可結合冷拉工藝除銹。

　　(1) The surface of reinforcing bar should be clean, and the oil, clay and floating rust must be cleaned up before use, and the rust can be removed by cold drawing process.

　　(2)鋼筋調直，可用機械或人工調直。經調直后的鋼筋不得有局部彎曲、死彎、小波浪形，其表面傷痕不應使鋼筋截面減小5%。

　　(2) The steel bar can be straightened by mechanical or manual means. After straightening, the steel bar must not have local bending, dead bending or wavelet wave shape, and its surface scars should not reduce the section of the steel bar by 5%.

　　(3)鋼筋切斷應根據鋼筋號、直徑、長度和數量，長短搭配，先斷長料后斷短料，盡量減少和縮短鋼筋短頭，以節約鋼材。

　　(3) The steel bar should be cut according to the size, diameter, length and quantity of the steel bar, the length should be matched, the long material should be broken first and then the short material should be broken, so as to minimize and shorten the short end of the steel bar, so as to save steel.

　　(4)鋼筋彎鉤或彎曲：

　　(4) Bending or bending of reinforcing bars:

　　①鋼筋彎鉤。形式有三種，分別為半圓彎鉤、直彎鉤及斜彎鉤。鋼筋彎曲后，彎曲處內皮收縮、外皮延伸、軸線長度不變，彎曲處形成圓弧，彎起后尺寸不大于下料尺寸，應考慮彎曲調整值。

　　Reinforcement hook. There are three types of hooks: semi-circular hook, straight hook and oblique hook. After bending, the endothelium shrinks, the outer skin extends, the axis length remains unchanged, and the bending part forms an arc. The dimension after bending is not larger than the blanking size, so the bending adjustment value should be considered.

　　鋼筋彎心直徑為2.5d，平直部分為3d。鋼筋彎鉤增加長度的理論計算值：對轉半圓彎鉤為6.25d,對直彎鉤為3.5d,對斜彎鉤為4.9d。

　　The diameter of bending center of steel bar is 2.5 days and the straight part is 3 days. The theoretical calculation value of increasing the length of steel bar hook is 6.25 days for counter-rotating semi-circular hook, 3.5 days for straight hook and 4.9 days for oblique hook.

　　②彎起鋼筋。中間部位彎折處的彎曲直徑D，不小于鋼筋直徑的5倍。

　　(2) Bend the reinforcing bar. The bending diameter D of the bending part in the middle part is not less than 5 times of the diameter of the reinforcing bar.

　　③箍筋。箍筋的末端應作彎鉤，彎鉤形式應符合設計要求。箍筋調整，即為彎鉤增加長度和彎曲調整值兩項之差或和，根據箍筋量外包尺寸或內包尺寸而定。

　　3. Stirrup. The end of stirrups should be bent hooks, and the form of bent hooks should meet the design requirements. The stirrup adjustment is the difference or sum of the length of the bending hook and the bending adjustment value, depending on the size of the stirrup outsourcing or the size of the inner package.

　　④鋼筋下料長度應根據構件尺寸、混凝土保護層厚度，鋼筋彎曲調整值和彎鉤增加長度等規定綜合考慮。

　　(4) The length of steel bars should be considered comprehensively according to the size of members, the thickness of concrete cover, the bending adjustment value of steel bars and the length of bending hooks.

　　b. 彎起鋼筋下料長度=直段長度+斜彎長度-彎曲調整值+彎鉤增加長度

　　B. Cutting length of bending bar = straight length + oblique length - bending adjustment value + hook length increase

　　c. 箍筋下料長度=箍筋內周長+箍筋調整值+彎鉤增加長度

　　C. Cutting length of stirrups = inner circumference of stirrups + adjustment value of stirrups + increase length of bending hooks