Construction panel with edges adapted to be coupled together

Construction panel apparatus to be used in forming a horizontal structure, comprising:

• a flat plate;
• two edge ribs respectively formed at two ends of said flat plate;
• a groove on an outer side of each of said two edge ribs, grooves of adjacent edge ribs forming a guide rail adapted for holding suspension fittings when two construction panels are joined together, said groove being formed to cause a space to exist between bottom edges of the grooves of the joined two construction panels;
• and
• a fitting insertable into said guide rail when faced in a first direction but not removable from said guide rail when faced in a second direction perpendicular to said first direction, said fitting including biasing means for biasing said fitting against said guide rail when said fitting is facing said second direction.

A construction panel comprising:

• a flat plate;
• two edge ribs respectively formed at two ends of said flat plate each edge rib having a single plate thickness and a flat head;
• an intermediate rib formed in said flat plate between said two edge ribs and having a flat head, said intermediate rib comprising a double plate thickness and having punched out portions folded over on said intermediate rib to hold together the double plate intermediate rib, said intermediate rib having a double plate thickness flat head which is co-planar with the edge rib flat heads;
• two connecting members respectively formed at said two edge ribs and having differently shaped cross-sections, connecting members of adjacent edge ribs forming a double plate thickness flat head when two panels are joined together;
• symmetrical first and second grooves respectively formed in said two edges ribs, first and second grooves of adjacent construction panels forming a channel adapted to hold a fitting extending orthogonal to said flat plate;
• and
• a fitting insertable into said channel when faced in a first direction but not removable from said channel when faced in a second direction perpendicular to said first direction, said fitting including biasing means for biasing said fitting against said groove when said fitting is faced in said second direction.

Construction panel apparatus comprising:

• a horizontal flat plate;
• a first edge rib coupled to an edge of said flat plate and extending orthogonal thereto, said first edge rib having a male coupling member with a first cross-section and a first portion extending parallel to said flat plate, said first edge rib having a single plate thickness;
• a second edge rib coupled to another edge of said flat plate and extending orthogonal to said flat plate and parallel to said first edge rib, said second edge rib having a female coupling member with a second cross-section and a second portion extending parallel to said flat plate, said female coupling member being adapted to couple to the male coupling member of an adjacent construction panel so that said first and second portions are adjacent and parallel, said second edge rib having a single plate thickness so that the first and second edge ribs of adjacent coupled construction panels form a double plate thickness;
• an intermediate rib coupled to said flat plate and extending parallel with and between said first and second edge ribs, said intermediate rib having a third portion extending parallel to and co-planar with said first and second portions, said intermediate rib having a double plate thickness;
• symmetrical first and second groves respectively formed in said first and second edge ribs, first and second grooves of adjacent construction panels forming a channel adapted to hold a fitting extending orthogonal to said flat plate;
• and
• a fitting insertable into said channel when faced in a first direction but not removable from said channel when faced in a second direction perpendicular to said first direction, said fitting including biasing means for biasing said fitting against said groove when said fitting is faced in said second direction.