Thanks Tony, yes they're support the entire rear of the house - i've got reasonably high celings however i'm assuming the SE knows what he's talking about....
Padstones are 440 Long x 4 Course Deep x 100 Wide Engineering Brick for one of the beams and 550 Long x 5 Course Deep x 100 Wide...
Hi,
New to the site and just after some info and undertstanding. I'll apologise now for any incorrect terminology used!!
I've had an SE do some drawings for steels etc for an extension and just wanted to understand the drawings and calcs so that I can gather a few estimates for comparison...