architecture
assembly
background
beam
building
building exterior
built structure
composition
construction
construction frame
construction industry
construction site
design
detail
engineer
exterior
frame
galvanized
home
house
industry
iron
material
metal
pattern
prefabricated
project
property
purlin
real estate
residence
roof
roof beam
sky
steel
steel purlin
structure
technology
truss
truss roof
working