4.8m joist span

The span is only part of the problem, you need the know the load aswell to be able to work out the size required.

 

Hi Phil,
Out of curiosity, how do designers/engineers work this out when designing the construction of a building?
Do they add up the total weight of all the bricks, blocks, timber, roof etc and then go from there?
Thanks (sorry for thread hi-jack!)

 

Fats, this will help explain in words better written than I could write them.


http://www.home-extension.co.uk/tech2.html

 

Many thanks for this Phil, will take a look. Cheers

 

Peralam / I-beams..have a wee google...