如图,中间有两根管子通向外边(位置在地下两英尺)不清楚为什么在地基上凿洞,大侠们有补的经验吗?应该补里面和外面吧?

如图,中间有两根管子通向外边(位置在地下两英尺)不清楚为什么在地基上凿洞,大侠们有补的经验吗?应该补里面和外面吧?

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sorry 照片是横着的,再试一张
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04/08/2019 postreply
13:22:13
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旧房子的头痛事
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04/08/2019 postreply
14:02:43
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好主意,如果从外面包水泥,水管会锈掉吗
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04/08/2019 postreply
14:52:54
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你要担心水管生锈,就先在管子上刷油漆,再填水泥
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04/08/2019 postreply
15:13:50
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多谢,会试试,送福利一张
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04/08/2019 postreply
15:43:59
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