A research program was initiated at the NAHB Research Center to study the structural performance of ICF walls when subjected to in-plane shear loading. An experimental study was designed to determine the influence of the following factors on the in-plane shear strength of ICF walls: (1) height-to-length aspect ratio of shear wall segments, (2) openings for windows and doors, and (3) the current minimal reinforcement details provided by the Prescriptive Method for Insulating Concrete Forms in Residential Construction (Prescriptive Method) . The main goal of this study was to confirm and improve methods of evaluating the in-plane shear capacity of ICF walls. This information is intended to improve the shear wall design and construction guidance found in the Prescriptive Method  and the International Residential Code .
In-Plane Shear Resistance of Insulating Concrete Form Walls