self-framing structures

huangyhg

self-framing structures?
i am responsible for designing a few skids (the underlying beam support structure and the frame of the self-supporting structure.) the columns will be hss (typically 5x5") and will be located between the outer cladding sheet and the inner liner. i am going to space my frames every 2.5 m, and will need girts and purlins. i have designed girts and purlins for typical industrial/gable type rigid frames but never for self-supporting frame structures. how will these purlins look and how will they connect to the hss frames? and the bracing as well? skid is only 6.5 m high.
also, i am to design the lifting lugs, to be located somewhere on the underlying beam support structure. what is a good place to locate these lifting lugs? (beam web, flange, etc..)
thanks,
clansman

i should note that the space between the outer cladding and the inner liner is 150 mm, just enough for the 5x5" hss columns, let alone girts and purlins. i am very unfamiliar with this framing system.
from your description, i think you just use 150 girts and purlins between the columns and beams, connected to cleats on each side.  bracing will have to be slotted through the girts.  will probably require a strut, another hss i think, between the columms at the top.
lifting lugs on end of extended floor beams, probably centred on top flange.
hope i understood your problem.