Theatre Solution Prima C1-U - Manual (Page 3)

Prima C1-U Specifications – Theatre Seating
Page 3 of 4
B. Seat Construction: The inner seat panel shall be an assembly of 3/4” thick Birch plywood with 3/4” thick
seasoned hardwood side supports and 12 gauge 9” x 1-3/4” cold-rolled steel reinforcement brackets. The
polyurethane foam padding material shall be two-ply and shall consist of 2” thick 55 lb. ILD and 1” thick
45 lb. ILD, shall be glued to the inner panel, and shall conform to the California Bureau of Home
Furnishings Technical Bulletin 117. The seat shall be upholstered on all surfaces and enclosed at the
rear/bottom with a zipper allowing for easier on-site reupholstery. 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 leg panels. 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 plywood veneer outer panel, one inner lumbar
plywood panel, and one inner shoulder plywood panel. The outer panel shall be 15mm thick, faced one
side with Grade A veneer centered across the width of the panel, and exposed plywood laminations along
all edges. The inner panels shall be 1/2” thick. Plywood panels shall be electronically glued hardwood
plywood. Inner panels shall be fastened to the outer panel with four bayonet hanging brackets at the top
and four 16 gauge flat steel brackets using four #8 x 1/2” pan head sheet metal screws at the bottom,
resulting in a rigid connection with no visible fasteners. The veneer face and edges of the outer panel shall
be stained to match the architect’s sample. The padding material on the shoulder cushion shall be 1-1/2”
thick polyurethane foam; the padding material on the lumbar cushion shall be 2” thick. All padding shall be
glued to the inner panel, and shall conform to the California Bureau of Home Furnishings Technical Bulletin
117. The outer panel shall contain six 1/4-20 threaded inserts and shall be assembled to the leg panels
with two 11 gauge steel angle brackets.
D. Hinge: The seat hinge shall be a weldment consisting of a 7 gauge hot-rolled pickled-in-oil steel component
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.
PART 3 – OPTIONS
3.1 AISLE LIGHT
A. Aisle lights shall be provided in accordance to the locations shown on the architectural drawings. The units
shall be of low voltage (24v) type and the light shall be attached to the upholstered leg panel. The leg
panel shall be prepared to accept the power wire. The necessary access holes and blank cover plates
shall be provided. The chair manufacturer shall also provide the necessary transformers. All wiring and
electrical connections shall be conducted at the job site and shall be the responsibility of others.
3.2 HARDWOOD EDGES, OUTER BACK
A. Outer plywood back panel shall be trimmed in 1/8” thick hardwood on the top and vertical edges. The
hardwood shall match the face veneer species and be stained to match.
3.3 INSET UPHOLSTERY, BACK
A. Back upholstery shall be inset to expose the veneer face on the inside of the outer back panel. The veneer
on the inside face on the back panel shall match the veneer species on the outside face and be stained to
match.
3.4 SEAT AND ROW IDENTIFICATION TAGS
A. Provide manufacturer’s standard shape brass number and letter plates. Font shall be Times Roman. The
size of the font on the seat number plates shall be 27pt; the size of the font on the row letter plates shall be
42pt. The number plates shall fit into a recessed area at the top edge of the seat. The row letter plates
shall be attached to the back of the integrated armrest with spiral shank nails.
3.5 BOOKRACKS
A. The bookrack shall be constructed of hardwoods and hardwood plywood. Bookrack shall be assembled
with tongue and groove construction and finished with a catalyzed lacquer. The bookrack shall be attached
to the outer surface of the chair back. An optional attachment configuration shall consist of a steel
weldment attached to the chair leg. This configuration allows the bookrack to be located between chair
backs.
3.6 COMPLIANCE WITH CALIFORNIA TECHNICAL BULLETIN 133