activity
assembling
assembly
balance
beam
big
boom
building site
carrier
carry
cement
chain
civil engineering
concrete
construction
crane
edifice
elevated
engineering
frame
framework
girder
hang
heavy
hoist
hoisting
hold on
hydraulic
industrial
industry
joist
large
load
long
manage
massive
mobile
mounted
part
people
pillar
place
rise
site
skeleton
steel
structure
telescopic
truck
work