beam

We're doing a self build which is actually a conversion of a current industrial building. It has a large flat roof which is supported by 3 x 11m long i-beams, approx 450mm x 300mm section, and they need to be raised by a few feet up to a height of around 7.5m. My question is, for a beam this...

Hi Everyone, I am putting an extension on my house (3 bed Semi) and we are opening up the back of the house to make it open plan. The steel calculations have come back and I have to put in a 8 m 305 x 305 118 Universal column which is 1 tonne in weight. My problem is the restricted access I...