"rog" wrote in message
...
Hi I'm putting a new floor level in an old concrete block building. I
am intending to hilti bolt a 3 x 6 wooden beam on opposing walls then
using joist hangers on them joisting across ( 14ft 1in span, 18inch
spacing ) with 6x2 joists.
Any suggestions on dimensions and spacing of the hilti bolts, also am
going to double up joists where bath & water cylinder etc will be; is
it normal to have double width hangers for this or just bolt together
timbers?
I'm stuck with max 6in depth of joists as stuck for internal room
height.

If it were me ..

# use double hangers where double joists.

# use square twist nails to nail joists to hangers

# use Hilti resin bolts 150mm in from each end at at 450mm spacing ... i.e.
between each joist.

If it is an old building consider using resin anchors must better grip
especially in blocks ... in effect you resin it threaded studs.