I'm not sure if this is in the right place, couldnt find the thread i was looking at before.
I came across these whilst looking to build a project at home. Basically taking plumbing pipe and fittings to build structures:
http://www.simplifiedbuilding.com/blog/wall-mounted-butcher-block-table-supported-with-pipe/
Shelving ideas:
http://www.simplifiedbuilding.com/blog/10-diy-industrial-shelf-ideas/
Is it possible to drill into the concrete/brick walls?