activity
armature
assembly
bar
bind
builder
building site
busy
cage
cement
civil engineering
concrete
construction
cutter
fitter
frame
framework
grid
hand
hardhat
helmet
industry
iron
make
manual
metal
mounter
pincers
place
plier
preparation
prepare
rebar
reinforce
reinforced
reinforcement
reinforcing
rod
rust
set
site
skeleton
steel
structure
tie
tool
wire
work
worker
worksite