Regarding the issue of spacing between underground pipelines
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May I ask, when pipes are laid underground, whether in passable trenches, semi-passable trenches, non-passable trenches, buried directly, or filled with sand in trenches, is the spacing requirement between pipes the same in all cases? For example, according to Table 8.2.11 of GB50187 or Appendix D of GB50030. Whether sand is filled or not, and whether it is buried or not, are the requirements regarding pipe spacing the same for all underground pipes? Thank you!
This question is quite specific @654262293 @rjs999 @ylb913 @ZhizheMing @hnan @great.wang