Tilt up construction is a fairly fast way of delivering a site cast concrete wall that can be load bearing. As far as the design of a tilt panel goes, get a copy of the 1997 UBC or 2000 IBC and look-up slender wall design. This is the prefered way to design.
Tilt up has a limit, about 45 foot tall panels, and it is also limited by the crane/site capacity for pouring. It works really well for warehouses and low rise office buildings (3-4 stories). Watch the opennings and jamb dimensions in design and use pilasters when you have too high of an axial load for slenderwall to work.
(and no I'm not a tilt-up assoc member or anything - or even a salesman, but I have done about 30 of these buildings)