钢筋计算截面面积及理论重量

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1、钢筋计算截面面积及理论重量公称直径/mm不同根数钢筋的计算截面积/mm²单根钢筋理论重量/(kg/m)123456789628.357851131421701982262550.2226.533.2661001331661992322652990.260850.31011512012523023524024530.3958.252.81061582112643173704234750.4321078.51572363143934715506287070.61712113.122633945256567879190410170.88814153.93084616157699231077

2、123113851.2116201.1402603804100512061407160818091.5818254.55097631017127215271781203622902.0020314.26289421256157018842199251328272.4722380.176011401520190022812661304134212.9825490.998214731964245429453436392744183.8528615.8123218472463307936954310492655424.8332804.2160924133217402148265630643

3、472386.31361017.9203630544072508961077125814391617.99401256.625133770502762837540879610053113109.8750196439285892785698201178413748157121767615.42注：表中直径d=8.2mm的计算截面面积及理论重量仅适用于有纵肋的热处理钢筋。纵向受力钢筋的混凝土保护层最小厚度（mm）（《混凝土结构设计规范》GB50010-2002）环境类别板、墙、壳梁柱≤C20C25~C45≥C50≤C20C25~C45≥C50≤C20C25~C45≥C50一2015153

4、02525303030二a-2020-3030-3030b-2520-3530-3530三-3025-4035-4035注：①基础中的纵向受力钢筋的混凝土保护层厚度不应小于40mm；当午垫层时不应小于70mm；②处于一类环境且由工厂生产的预制构件，当混凝土强度等级不低于C20时，其保护层厚度可按本规定减少5mm，但预应力钢筋的保护层厚度不应小于15mm；处于二类环境且由工厂生产的预制构件，当表面采取有效保护措施时，保护层厚度可按本表中的一类环境值取用；③预制钢筋混凝土受弯构件钢筋端头的保护层厚度不用小于10mm；预制肋形板主肋钢筋的保护层厚度应按梁的数值取用。每米板宽各种钢筋间距时的

5、钢筋截面面积（房建结构）钢筋间距/mm当钢筋直径/mm为下列数值时的钢筋截面面积/mm²34566/888/101010/121212/141414/161670758085909510010194.388.483.278.574.570.6179167157148140132126281262245231218207196404377354333314298283561514491462437414393719671629592559529503920859805758716678644112110479819248728267851369127711981127106410089

6、581616150814141331125711901131190817801669157114841405133521992053192418111710162015392536236722182088197218681775287226812513236522342116201111012012513014064.258.956.554.450.511410510096.689.717816315715114025723622621820235732731430228145741940238735958553751549546071465462860456187179876673

7、76841028942905870808121411121068102795413991283123211841100161414801420136612681828167616081547143615016017018019020047.144.141.539.237.232.383.878.573.969.866.162.813112311510910398.21891771661571491412622462312182071963353142962