토목 공사

Excavator bucket digging into soil at a construction site
Tsubasa MfgT

Tsubasa Mfg

Piled asphalt rubble with a yellow construction vehicle in the background
hiroh

hiro

Aerial view of a construction site with heavy machinery and buildings under construction
DragonOneD

DragonOne

A close-up of a hydraulic excavator bucket resting on gravel
ookinate23o

ookinate23

Yellow excavator on green grass under blue sky
@poteton18

ぽて

Vibratory plate compactor and asphalt roller at a road construction site
tamu1500t

tamu1500

Yellow construction vehicle digging at the side of a road
hiroh

hiro

Image of a concrete foundation under construction showing wooden forms and rebar
ookinate23o

ookinate23

A construction site with a pile of rubble and part of heavy machinery
YuzurigimaY

Yuzurigima