Economical ICF To Cold-Formed Steel Floor Connections (May 2001, 28 p.)
The use of insulating concrete forms (ICF) in combination with cold-formed steel (CFS) framing
is relatively new to the U.S. homebuilding industry. Unfortunately, published information
provides little guidance regarding "best practices". This problem was identified by Bruce Davis
Homes during construction of a Partnership for the Advancement of Technology in Housing
(PATH) demonstration project at Washington Square, LaPlata, Maryland. In considering the use
of a CFS floor system with a side-bearing connection to ICF walls, it was found that existing
construction guidelines did not address this connection detail in a manner applicable to or
efficient for ICF and CFS materials. Therefore, two fastening methods were identified
based on their potential to improve the constructability and economy of ICF wall to CFS floor
connections. This study investigates and reports the performance of such connections using
standard 5/8-inch diameter anchor bolts or Richmond F-32 anchors to transmit the floor load
from a steel ledger track, through the ICF foam insulation, and into the concrete core of an ICF
wall.
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