24 Specifications Teatro Auditorium Seating
B. Seat Construction: The seat panel shall be 5/8” thick, electronically glued curved hardwood plywood. The
padding material shall be 3” thick polyurethane foam, shall be glued to the inner surface of the seat panel,
and shall conform to the California Bureau of Home Furnishings Technical Bulletin 117. The outside
surface of the seat panel shall be encapsulated in 1/2” thick slab polyurethane foam. The complete seat
assembly shall be supported by two 7 gauge formed steel mounting brackets which will attach the seat
assembly to the hinges on the standards. The seat shall have a built-in counterweight to insure automatic
self-rising without the aid of springs. Arch-spring seat construction will not be acceptable.
C.
Back Construction: Solid back construction comprised of a curved plywood veneer outer panel fastened
solidly and without voids to an inner structural plywood panel. The outer panel shall be 3/4” thick, faced
one side with Grade A veneer centered across the width of the panel, and exposed plywood laminations
along all edges. The inner panel shall be 3/8” thick. Both shall be electronically glued hardwood plywood
and shall be fastened together with bayonet hanging brackets at the top and two #8 x 3/4” trim head screws
at the bottom, resulting in a rigid connection with no visible fasteners on the outer
face and edges of the outer panel shall be stained to match the architect’s sample. The padding material
shall be 1-3/4” thick polyurethane foam, 2-3/4” thick in the lumbar region, shall be glued to the inner panel,
and shall conform to the California Bureau of Home Furnishings Technical Bulletin 117. The complete
back assembly shall be supported by two 13 gauge formed steel brackets and two 3/8-16 hex head bolts
which will attach the back assembly to the frame.
D. Armrests: Shall be kiln-dried solid hardwood, nominally 1” thick x 2-1/2” wide x 12” long, stained to match
the outer seat and back panels. The armrest will be fastened to the steel frame arm support with one 10-
24 x 7/8” flat head machine screw and one 10-24 x 2-1/4
” flat head machine screw into threaded inserts on
the underside of the armrest. Chairs equipped with tablet arms shall have armrests nominally 1” thick x 2-
1/2” wide x 18” long and shall be attached to the steel frame arm support with four #8 x 3/4” sheet metal
screws.
E. Hinge: The seat hinge shall be a weldment consisting of a 7 gauge hot-rolled pickled-in-
and shall be formed and punched to receive a 0.56” id x 0.75” od x 0.5” long steel bushing. A self-
lubricating nylon sleeve shall be fitted between the seat hinge and the standard seat hinge pin. The hinge
shall be machined to provide a positive stop location for the seat in both occupied and unoccupied
positions. The hinge shall be fitted with a plastic cover to eliminate all pinch points and shall include a
3/16” thick urethane rubber pad to dampen noise upon the seat return to the vertical position.
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