That's a nice idea, it's a pity no one supported it. I'll get back home and take a look, there's something I can add.
Posts made by roseyshere1
RE: Permits and Professional engineering Required
Welded rebars are not permitted indeed, though mechanically pressed steel couplers sure are as far as I know. Tying up would be enough, but that's a way more reliable and durable method. There's a company called Hardman that uses rebar coupling systems in building, here you can take a look http://www.hardman-de.com/technology/rebar-coupling-equipment.html. They make the component in Germany, so they're high-quality and environmentally friendly. I worked with them once and now I can't help recommending it.