Floor joists

[bobasd]

Dont use Acrows as permanent props - they are not built for that.
you can build and attach brick nib columns but leave them a few courses shy of desired height.
then jack the RSJ into position using two hired Acrows - then finish building the nib up to the RSJ.

 

[Leofric]

Dont use Acrows as permanent props - they are not built for that.

Yes, agree.

 

[Tommo1863]

Guys, thanks so much.... really appreciate the advice... you guys are much better then the screwfix forum!!!
Cheers