TomCow Posted May 23 Share Posted May 23 Reading online about joist spans and 6x2 timber limit. I was thinking about putting flat bar between two bits of timber maybe 4x2 and using them as support to prevent the sag. Would that work? Link to comment Share on other sites More sharing options...
Dave Jones Posted May 23 Share Posted May 23 use pozi's. Link to comment Share on other sites More sharing options...
Russell griffiths Posted May 23 Share Posted May 23 What are you actually trying to do. better explanation needed. Link to comment Share on other sites More sharing options...
TomCow Posted May 23 Author Share Posted May 23 I'm looking at spanning floor joists over 5m and was seeing if sandwiching a piece of flat bar between 6x2 would stop it sagging. Link to comment Share on other sites More sharing options...
joe90 Posted May 23 Share Posted May 23 (edited) It’s called a Flitch beam. https://en.wikipedia.org/wiki/Flitch_beam you might find this helpful. https://www.timberbeamcalculator.co.uk/en-gb/span-table/floor-joists?load=1.5&class=C24 Edited May 23 by joe90 Link to comment Share on other sites More sharing options...
ProDave Posted May 23 Share Posted May 23 Our 5M span is done with 300mm deep Posi Joists. Link to comment Share on other sites More sharing options...
Russell griffiths Posted May 23 Share Posted May 23 Can you not use a deeper joist, your way will use double the timber, plus the steel, plus the bolts this will make the whole idea very expensive. Link to comment Share on other sites More sharing options...
ProDave Posted May 23 Share Posted May 23 4 minutes ago, Russell griffiths said: Can you not use a deeper joist, your way will use double the timber, plus the steel, plus the bolts this will make the whole idea very expensive. And the steel will make it almost impossible to pass cables and pipes through the joists. (not an issue with posi joists) 1 Link to comment Share on other sites More sharing options...
TomCow Posted May 23 Author Share Posted May 23 Would 8x2 timber be OK for that span? How much are posi joists? Link to comment Share on other sites More sharing options...
Andehh Posted May 23 Share Posted May 23 Watching with interest for an outdoor patio cover project is like to do one day! Link to comment Share on other sites More sharing options...
Russell griffiths Posted May 24 Share Posted May 24 We still need more information is this a roof over a garden pergola a first floor of a house or the floor of a nightclub with 100 ravers bouncing up and down 5m is getting near the limits of a lot of solid timber and your looking for an engineered solution. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now