formigli longspan channel crete

huangyhg

formigli longspan channel crete
has anyone ever heard of this?  i have this one span table.  i'm also looking for information on precast tongue and groove concrete plank.  would they have put any mesh in there or would it be plain concrete?
never heard of it.
that span table looks like it was published in the 70's.
it looks like precast roof panels, i saw it once during a roof remodelling project for a water treatment plant. it stayed well, but the foam insulation and water proofing were deteriorated. vandede427 are correct, it was produced around 70's.  
it may be a residential system, many attempts have been made to come up with lightweight flooring systems. try aci?. would be interested to see what turns up.
curiousity got to me. google led to a acquistion of formigli by the high group.
121615,
i suggest you get in touch with mr. d. a. sheppard who worked with the formigli corporation forty years ago.  check out this site for more details.