給水管線頂(dǐng)覆(fù)土厚度不宜小於0.7M,並應5261敷設(shè)在凍土線一下0.2m處。建築4102內埋地(dì)管1653在無(wú)活荷載和凍土影響時,其管定離(lí)地(dì)麵高