Structural Engineers?

Question

I am doing my extension to my house and I am breaking through at two points upostairs and downstairs. Upstairs a 810mm opening and downstairs a 910mm structural opening, through a cavith wall. I know you cannot recommend over the internet, but could you give me a clue as to what kind of lintol, or steel work would surfice. Also I need a steel RSJ for the ridge to a traditional roof with a span of about 5500mm to carry rafters of about 180mm x 50 mm. Can anyone give me a clue how to do the calculations or would anyone help me out with them?

Answer 1

the building control officer at your local town hall will need to see the calculation for the steel so you need to contact a structural engineer to do this for you as its not a case of any old piece of steel will do, it has to be the correct size and weight according to the load its carrying and thats why you need to use a professional in this field of work

for the door openings you will need a 1200 x 150 x 100 concrete lintol to each of the brick walls your breaking through so for a cavity wall you will need 2 lintols per doorway opening

hope this helps

thanks

Mick

Answer 2

you can use concrete lintols on the internal openings remember to have a bearing of 150mm each side ..an rsj of 200mm by 100mm will easy satisfy any building control in the uk ..under an rsj you must form a padstone of concrete or blue bricks ..450 by 225

Answer 3

In order to do this work you need to get building control involved. In order to get building control involved you need proven structural calculations. Carried out by a structural engineer. Don't be a cowboy and do it the way it should be done

Answer 4

That is a question nobody here can answer. Structural and baring pressure varies from county to county and state to state. You need a local structural engineer that is familiar with your building codes and zones.

Answer 5

Try asking at your local council. they can be very helpful at times.........................