1、当钢筋直径(mm)为下列数值时的钢筋截面面积(mm 2)钢筋间距(mm) 4 4.5 5 6 8 10 12 14 16 18 20 22 25707580901001801681571401262272121991771592802622452181964043773533142837186706285595031122104798287378516161508141412571131219920531924171015392872268125132234201136353393318128272545448841893927349131425430506847524224380170126
2、545613654544909110120125130140150114105101979084145133127122114106178164157151140131257236226217202188457419402387359335714654628604561524102894290587080875413991283123211841100102618281676160815471436134023132121203619571818169628562618251324172244209434563168304129242715253444624091392737763506327
3、216017017518019020079747270666399949188848012311511210910398177166162157149141314296287279265251491462449436413392707665646628595565962906880855810770125711831149111710581005159014971454141413391272196318481795174516531571237622362172211220011901306828872805272725842454250300504264537965113942011683
4、142624523776165138046701018848125710471521126719631636钢筋间距 4 4.5 5 6 8 10 12 14 16 18 20 22 25不同根数直径的计算截面面积(mm 2)直径 d(mm) 1 2 3 4 5 6 7 8 9单根钢筋公称质量(kg/m)34566.57.112.619.628.333.214.125.139576621.237.7598510028.350.37911313335.362.89814116642.475.411817019949.588.013719823256.5100.515722626563.6113.
5、11772542990.05550.09860.1540.2220.26088.210121450.352.878.5113.1153.910110615722630815115823633946220121131445261625126439356577030231747167992435237055079210784024226289051232452475707101813850.3950.4150.6170.8881.2081618202225201.1254.5314.2380.1490.940250962876098260376394211401473804101812571521
6、196310051272157119012454120615271885228129451407178121992661343616082036251330413927181022902827342144181.5781.9982.4662.9843.85328323640615.8804.21017.91256.612321608203625131847241330543770246332174072502730794021508962833695482561077540431056307125879649266434814310053554272389161113104.8346.3137
7、.9909.865梁纵向钢筋单排最大根数 (净保护层厚度:25mm )钢筋直径(mm)梁宽 b(mm )14 16 18 20 22 25 28 32 36 40150 2/3 2/3 2 2 2 2 1/2 1 1 1200 4 3/4 3/4 3 3 3 2/3 2 2 1/2250 5 5 4/5 4/5 4 3/4 3 2/3 2 2300 6/7 6 5/6 5/6 5 4/5 4 3/4 3 2/3350 7/8 7 6/7 6/7 6 5/6 4/5 4 3/4 3400 8/9 8/9 7/8 7/8 6/7 6/7 5/6 4/5 4/5 3/4450 9/10 9/10 8
8、/9 8/9 7/9 7/8 6/7 5/6 4/5 4/5500 10/12 10/11 10/11 9/10 8/10 7/9 6/8 6/7 5/6 4/5550 12/13 11/12 11/12 10/11 9/11 8/10 7/9 6/8 5/7 5/6600 13/14 12/14 12/13 11/12 10/12 9/11 8/10 7/8 6/7 5/7梁宽 b 14 16 18 20 22 25 28 32 36 40梁纵向钢筋单排最大根数 (净保护层厚度:30mm )钢筋直径(mm)梁宽 b(mm)14 16 18 20 22 25 28 32 36 40150 2
9、2 2 2 2 2 1/2 1 1 1200 3/4 3 3 3 3 2/3 2/3 2 2 1/2250 5 4/5 4/5 4 4 3/4 3 2/3 2 2300 6 5/6 5/6 5 4/5 4/5 4 3/4 3 2/3350 7/8 6/7 6/7 6/7 5/6 5/6 4/5 4 3/4 3400 8/9 8 7/8 7/8 6/7 6/7 5/6 4/5 4/5 3/4450 9/10 9/10 8/9 8/9 7/8 6/8 6/7 5/6 4/5 4/5500 10/11 10/11 9/10 9/10 8/9 7/9 6/8 6/7 5/6 4/5550 11/12 11/12 10/11 10/11 9/10 8/10 7/9 6/8 5/7 5/6600 12/14 12/13 11/13 11/12 10/12 9/11 8/10 7/8 6/7 5/7梁宽 b 14 16 18 20 22 25 28 32 36 40