by Mike G » 13 Oct 2017, 21:35
If you have a double door then 1500 is about the minimum, as you can still use one leaf effectively. For a single door, I'd be looking for 900 for a workshop, minimum, because stuff you make, or materials you want to take in, could be awkward with anything less.
No, drill your plugs in, and not into the mortar courses.
There are a multitude of different flexible galvanised MS straps on a roll available. They're all pretty cheap.
Building the corners first is the traditional way of doing brickwork, and takes some care. You could alternatively set up some firm corner posts of timber and stretch your line between them, but, frankly, for 3 course it is hardly worth the trouble.