scaffolding

In the US, steel scaffolding usually has a minimum footprint of 5'x7'. Here's a link to one rental company.

Here's the website for the most popular aluminum scaffold manufacturer.

Hope this helps.

 

A little more on steel scaffolding. A ladder section is typically 5' wide by 6' high... they do make other sizes however. The typical length of a deck section is 7'. If it's portable they go up on 8" casters which add a total of about 11" to the overall height. Safety fences on top are about 30" high.