Static structures (e.g. – buildings) – Inclined top cover – On existing roof
Patent
1983-04-22
1985-05-14
Bell, J. Karl
Static structures (e.g., buildings)
Inclined top cover
On existing roof
52198, 52404, E04B 700
Patent
active
045163634
ABSTRACT:
Prefabricated roof rafter truss structures are provided which function as deep webbing rafters for spanning and enclosing a living space and accommodating superinsulation. In each truss structure first and second outer rafter chords define a roof gable. At least one inner rafter chord is rigidly joined in parallel relationship to an outer rafter chord by deep webbing to define a rafter depth sufficient to accommodate insulation with an R factor of 60 or greater with ventilation space over the insulation. The truss structure also includes a horizontal ceiling joist chord positioned above and joined to the upper end of the inner rafter chord. Further deep webbing rigidly joins and spaces the horizontal ceiling joist chord with reference to the first and second outer rafter chords and generally ties the truss webs and chords into a rigid structure including the extending deep rafter portions. The attic space over the ceiling joist chord is also sufficient to accommodate superinsulation. The prefabricated truss structures are of flexible configuration and may be arranged for a variety of roof styles in which the rafter portions also function as the ceiling including, for example, capes, saltboxes, dormers, hips, gambrel roofs, and other high ceiling designs. The various truss structures are incorporated into a superinsulation building system in which deep insulation is retained between the inner and outer surface coverings secured to a set of truss structures. Air ventilation passageways are defined over the insulation by porous or air breathing material leading from the soffet cavity to the attic space and ridge vent.
REFERENCES:
patent: 4007672 (1977-02-01), Luckey
patent: 4030256 (1977-06-01), Ollman
patent: 4185433 (1980-01-01), Cantrell
Alcorn William W.
Beaulieu Roger D.
Matychowiak David S.
Bell J. Karl
Kane, Jr. Daniel H.
Super-Truss Building Systems, Inc.
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