Currently I have my ceiling (whisper clips, hat channels, DW+GG+DW+GG+DW) resting on the ledge
I've read here that despite the great mass of this wall, it can present flanking issues (sound going up the wall, through the rest of the house - even the other side) - and that it requires a framed stud wall filled insulation between the study and with DW+GG+DW in the front, and DW in the back, and that this wall should ideally be 1" from the concrete (and no less than 1/8" away) so that it doesn't come in any contact with the concrete as it vibrated (thus decoupling the wall from the concrete)
Q - How do you put DW on the back of the stud wall if there's only 1" of space between it and the FW?
Q - Is it worthwhile to put DW+GG+DW on the back?
Q - I've already built my ceiling (see above) - so how do I anchor the stud wall?
main ITOLLTHW thread