"Andrew Barnes" wrote in message
...
Hi There

As a strict DIYer i would like to calculate the size of beam required to
support a wall, when I make a 2m wide opening in a wall.

I am an engineer, but have been working in science for years, so don't
know
where to start!

Can anyone offer any help or advice?

Thanks

Andrew

Use a wooden "I" beam, not over engineered steel.

See:
http://www.masonite-beams.se

They will do the calcs for you.