Onoff
In the land of the unfinished project I am King!
- Messages
- 10,144
- Location
- Sevenoaks, UK
- I have a big 'ish but "lightly" imo, constructed, double garage with truss rafters. I desperately need more storage space. I've been up in there and measured the section of the trusses, nominally made from 70x35mm with nail plates. Wall construction is 4" Celcon blocks with pillars. Gable end is 4" Celcon carried on up to the peak (some pillars on that wall too that I should add. The end where the trusses aren't shown is a hip end.
Across the front entrance is a 178x102 RSJ (as in tapered flanges) - the red beam.
I'd thought about just spanning the walls with bfo timbers, say 9"x3" and sistering these with bolts and dog washers to the bottom chord of the truss. I've an old Approved Document A here from 1985 and even 225x75 SC3 at 600 centres doesn't cut it as floor joists. Again, this will not be a "living" area, just storage.Maybe that'd be OK?
Thus half a plan then to run a new UB down the centre, mid span and underneath of the existing trusses. I've drawn this in as a 254x146x31kg/m as it fits with just 7mm of packing between it and the u/side of the existing trusses. Connect the UB to the RSJ at the front. I imagine I'll need square post(s) coming up from the floor to support the new UB. Ideally I don't want any vertical posts along it's length to open car doors into etc.
Or maybe steel goal posts tucked tight to the side walls, again with a central steel.Then span wall to wall, on the existing wall plate with say 200x47 sistered to the existing truss. Then frame out up and over in 150x47, screwed to the existing trusses. Then CUT AWAY the existing trusses giving me an open "room".
Another though was to run TWO long beams back off the front RSJ so they just happen to sit dead centre of where a car would park. They could double up for engine hoist beams if I put a chain block and trolley on them.
Any thoughts, pointers? What I need is a tame SE who'll work for beer money!
Cheers