As insulated concrete forms (ICFs) have gained popularity
as an alternative to standard foundation
forms, many builders are also looking for ways
to use ICFs above ground as well. Whether an
ICF wall is used only for the basement or for additional
stories, however, framing of the floor system is still one
of the most difficult parts of the process (see "Step by
Step With Foam Forms," 12/95).
Canadian builders, who have a head start using foam
forms, have pioneered the use of structural slabs with ICFs.
Approaches range from precast systems, such as that from
Coreslab, to deep- or shallow-pan steel deck forms (see Steel
Deck Alternatives, last two pages). While