System Description

General

The FOMWALL structural panel system consists of 5^1/3" wide exterior and interior aluminum metal skins, roll formed to interlock with specially formulated extruded non-thermal conducting studs.

The panels are field erected to form both the exterior walls and interior walls of the structure. Almost total freedom in the location of doors and windows is available, thus allowing wide flexibility of design.

The wall cavities are filled with an ultra-light foamed compound (1.5–2.0 lbs./ cu.ft.) to form a rigid, fire-resistant, thermally efficient structure that is many times stronger than a comparable wooden structure, requiring very little maintenance.

The design of the system, combined with the high insulating value (U= 0.0278), ensures that no metal connections go through the wall to reduce the thermal efficiency. The specially designed studs accomplish this by forming a thermal break between the interior and exterior panels. This lowers the through-the-wall conductance. Thermal breaks in the window and door-frames, and the split track for placement of the wall system, assist in isolating the interior from the exterior.

Field Installation

The FOMWALL system can be installed on slab, crawl space or full basement. The panels are set in a base track consisting of extruded aluminum angles set in caulk or a gasket tape seal. After the wall is set up, a top plate is attached to the panels and is bolted to the foundation with a threaded eyebolt and steel anchor rod.

Roof construction is of standard truss design. FOMCON systems provide a specially designed steel truss system as a standard; however, other systems are easily adapted such as wood truss, flat roof or decking for second floor construction.

Insulating Efficiency

Insulating values of the FOMWALL system are derived from laboratory tests and conformed by structures now in service. The values attained remain highly stable, because the FOMWALL core is of a closed pore structure and will not absorb water to any significant degree and will not deteriorate or sag over decades of service.

• Coefficient of Heat Transmission U = 0.0278
• Thermal Resistance R = 35+
• Air Infiltration at Joint = 0
• Moisture Vapor Transmission at Joint (perms/inch) = 0.1

The Erected System

FOMWALL system panels consist of .030-inch gauge aluminum, with a factory applied KYNAR™ paint finish on the exterior surface and a wash coat on the inner surface. The panels are field filled with a foamed plastic compound causing the structure to become rigid, insulating panels. The resultant transverse loading yield is greater than 8000 pounds per lineal foot and greater than 80 pounds per square foot. Racking shear is greater than 500 pounds per lineal foot.