rsj beam selection

Hello, sorry if this isn’t the right place, it’s my first time posting. I have a couple of question, both things I’m a little uneasy about. I have a builder working on a loft conversion and it has a large steal going across the ridge, my concern is it looks like that steal is only supported on...

We are in the early stages of deciding what we want to get from an extension on the rear of our 1950s semi. The existing house has a kitchen and dining room across the back of the house divided by a supporting wall. I have found it difficult to find much info on the topic although I’ve seen...

I have an open plan kitchen & family room approx 8.4m by 3.6m. I have noticed in the middle of the room that the ceiling is slightly sagging approx 25mm, you would never notice it unless you put a straight edge to it but it is more noticeable in the bedroom above. The ceiling joists run the 8.4m...