φ500跨渠钢管一般跨度？

管子自重加满管水重，所能达到的最大跨度：
管壁厚
mm
4.7625 6.35 7.9375 9.525 11.1125 12.7 15.875 19.05 22.225 25.4


直径 跨度
mm m
152.4 10.9728 12.192 13.4112
203.2 11.5824 12.8016 13.716
254 11.8872 13.1064 14.0208
304.8 12.192 13.4112 14.3256
355.6 12.192 13.4112 14.3256
406.4 12.4968 13.716 14.6304
457.2 12.4968 14.0208 14.9352 15.8496
508 12.8016 14.0208 15.24 16.1544
558.8 12.8016 14.0208 15.5448 16.4592
609.6 12.8016 14.6304 15.8496 16.764 17.6784 18.288
660.4 13.1064 14.6304 15.8496 17.0688 17.9832 18.5928
711.2 13.1064 14.6304 16.1544 17.0688 17.9832 18.8976
762 13.1064 14.9352 16.1544 17.3736 18.288 19.2024
812.8 13.4112 14.9352 16.4592 17.3736 18.5928 19.5072
863.6 13.4112 14.9352 16.4592 17.6784 18.5928 19.5072
914.4 13.4112 15.24 16.4592 17.6784 18.8976 19.812 21.336
965.2 13.4112 15.24 16.764 17.9832 18.8976 19.812 21.336
1016 13.4112 15.24 16.764 17.9832 19.2024 20.1168 21.6408
1066.8 13.4112 15.24 16.764 17.9832 19.2024 20.1168 21.9456
1143 15.5448 16.764 18.288 19.2024 20.4216 21.9456
1219.2 15.5448 17.0688 18.288 19.5072 20.4216 22.2504 23.7744
1295.4 15.5448 17.0688 18.288 19.5072 20.7264 22.5552 24.0792
1371.6 15.5448 17.0688 18.5928 19.812 20.7264 22.5552 24.0792
1447.8 15.5448 17.3736 18.5928 19.812 21.0312 22.86 24.384
1524 15.5448 17.3736 18.5928 19.812 21.0312 22.86 24.384
1600.2 15.8496 17.3736 18.8976 20.1168 21.0312 23.1648 24.6888
1676.4 15.8496 17.3736 18.8976 20.1168 21.336 23.1648 24.6888 26.2128 27.432
1828.8 15.8496 17.6784 18.8976 20.1168 21.336 23.4696 24.9936 26.5176 28.0416
1981.2 17.6784 18.8976 20.4216 21.6408 23.4696 25.2984 26.8224 28.3464
2133.6 17.6784 19.2024 20.4216 21.6408 23.7744 25.6032 27.1272 28.6512
2286 17.6784 19.2024 20.4216 21.6408 23.7744 25.6032 27.432 28.6512
2438.4 17.6784 19.2024 20.7264 21.9456 24.0792 25.908 27.432 28.956
2590.8 17.6784 19.2024 20.7264 21.9456 24.0792 25.908 27.7368 29.2608
2743.2 19.5072 20.7264 21.9456 24.384 26.2128 27.7368 29.2608
2895.6 19.5072 20.7264 22.2504 24.384 26.2128 28.0416 29.5656
3048 21.0312 22.2504 24.384 26.5176 28.0416 29.8704
3200.4 21.0312 22.2504 24.6888 26.5176 28.3464 29.8704
3352.8 21.0312 22.2504 24.6888 26.5176 28.3464 29.8704
3505.2 21.0312 22.2504 24.6888 26.8224 28.6512 30.1752
3657.6 21.0312 22.5552 24.6888 26.8224 28.6512 30.1752

现在新出版了一本《自承式给水钢管跨越结构设计规程》2006，可以参考一下。