RSJ bearings

[irose]

Hi all
I have a 290mm wide cavity wall. Each wall is 4" wide and made of block. About to make an opening of approx 2.5m and insert an RSJ above to support. (Yes BCO is well aware!!)
Structural Engineer screwed up slightly so not 100% sure on padstone size to use. The depth is stated as 150mm but its the width and lenth I need.

So my question now is what size padstone should I use and which way round? Also, would it be one stone at each end bridging the cavity or 2 stones at each end not bridging the cavity.

Need to cast them now so any quick response appreciated.
Thanks in advance.

 

[noseall]

if it's an old external wall that's now become internal, then you can make one big padstone the full width of the cavity wall.

make it 150mm thick (2 courses) x 290mm wide (full wall thickness) x say 290mm deep or long.

 

[markie]

Where ever you are getting your steels from ask for spredder plates, they know what you are talking about. It might work out cheeper.

 

[Static]

Padstone size depends on load and wall strength. Whats size is the steel beam?