Prefabricated building construction

Claim 1

In a prefabricated building construction, the combination comprising a base structure, a plurality of prefabricated substantially identical wall units mounted on said base structure to provide generally vertical walls, each said wall unit comprising continuous outer layers of fiber reinforced plastic providing a space between said layers, the major portion of the space between said layers being filled with a foam plastic material, each said wall unit having intergral angularly related wall panel portions defined by said outer layers and said foam plastic filler, each said wall unit being formed in situ during manufacture of the units to provide a hollow space at the area of juncture of the wall panel portions extending the entire length of the wall panel portions, at least one roof unit mounted on said wall units, said roof unit including continuous spaced layers of fiber reinforced plastic material providing a space between said layers, the major portion of the space between said layers being substantially filled with said foam plastic material, each said roof unit including intergral two angularly related roof panel portions and an end panel portion extending transversely of the roof panel portions, said roof panel and end panel portions being defined by said layers of said roof unit, said roof unit being formed in situ during manufacture of the unit to provide a hollow space at the area of intersection of the roof panel and end panel portions, said wall units being positioned in side-by-side relationship, said roof unit being positioned on said wall units with the hollow spaces of the roof unit communicating with the hollow spaces of the wall units, and a material cast in situ after the wall units and roof units have been superimposed filling said hollow spaces of the roof unit and wall units and thereby forming an integral structure.