anchor
anchoring
anchors
assembling
background
base
bolt
bolts and nuts
bottom
build
building
cement
close
closeup
column
concrete
connection
construction
detail
edifice
engineering
equipment
foundation
ground
industrial
industry
iron
material
metal
new
nut
nuts
pillar
plate
project
reinforcement
rusty
screw
screws and bolts
set
shape
site
steel
structure
support
technology
thread
threaded
tool
work