assembling
conduit
construction
culverts
damage
digging
dirty
ditch
drainage
drinking water
earth work
engineering networks
excavation
excavation works
filtration
foundation
ground
grunge
hole
industrial
infrastructure
installation
installing
job
laying
mesh
municipal
network
pipe
pipeline
pipes
pit
plumbing
problems
pumping
reconstruction
repair
repair work
replacement
section
sewage
sewer
sewerage
system
systems
trench
underground
utility
water
work
定額
Laying underground storm sewers at a construction site. Groundwater system for new residential buildings in the city. Installation of water main, sanitary sewer, storm drain systems in city.の素材 [FY310145385967]
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