文档介绍：箍筋直径8混凝土保护层厚度20梁纵向钢筋单排最大根数钢筋直径(mm)梁宽(mm)14161820222528321502/32/22/22/22/22/21/21/12003/43/43/33/33/32/32/32/22505/54/54/54/44/43/43/32/33006/65/65/65/55/54/54/43/43507/87/76/76/75/65/64/54/44008/98/97/87/86/76/75/64/54509/109/108/98/97/86/86/75/650010/1210/119/109/108/97/96/86/755011/1311/1210/1210/119/118/107/96/860013/1412/1311/1311/1210/129/118/107/865014/1513/1513/1412/1311/1310/129/117/970015/1714/1614/1513/1412/1410/139/128/1075016/1815/1715/1614/1513/1511/1410/129/1180017/1916/1816/1715/1714/1612/1511/139/1285018/2117/1917/1916/1815/1713/1611/1410/1290019/2219/2118/2017/1915/1814/1712/1511/1395021/2320/2219/2118/2016/1914/1813/1611/14100022/2421/2320/2219/2117/2015/1914/1712/15105023/2622/2421/2320/2218/2116/2014/1812/15110024/2723/2622/2421/2319/2217/2115/1913/16115025/2824/2723/2622/2420/2318/2216/2014/17120026/2925/2824/2723/2521/2418/2316/2014/18梁宽(mm)1416182022252832说明:,其分子为梁上部纵筋单排最大根数,分母为梁下部钢筋单排最大根数。,纵筋保护层厚度按钢筋直径和按环境类别取的保护层厚度与箍筋直径之和的大值。