Constructed from Structural Insulated Panels (SIP), this idyllic winter chateau located in Wasilla, Alaska, demonstrates the concept that premanufactured homes can be custom-made to suit almost any environment.
Due to the remote location, this project was presented with numerous logistical issues during construction, including a short construction season, limited availability of local materials, and harsh environmental performance requirements.
Structural insulated panels were selected as the material of choice because of their high insulative properties, their strength to withstand the wind and snow demands of the site conditions, and the ability to install the panelized structural system quickly.
The SIP panels used for this project are constructed from wood framing, filled with high-strength urethane foam and lined with oriented strand board (OSB) panel skins. The urethane foam acts not only as a highly insulating material, but adheres to the panel sides giving the panelized system strength characteristics. Taking advantage of these strength characteristics eliminates the need for a secondary structural system to support the panels which saves material and construction costs. The panels are connected together with special cam-lock devices for quick installation, and the edges of the panels are fastened with nails to provide in-plane shear wall resistance.
The framing package was manufactured in Gresham, Oregon, and was shipped to the site in large shipping containers for installation during the warmers summer months.
Miller Consulting Engineers, Inc. provided the structural design for this project and has provided structural design and testing criteria support for the SIP panels manufactured by Imperial Manufacturing, Inc.