Sweets

Sequence™ Seating

Product Description:
Beam mounted seating with tablet writing surface provides maximum space utilization for classrooms and lecture halls. Curved or straight beams are available in either floor or riser mounted versions. Optional power and data available for laptop users.

• Six chair options offer a wide variety in comfort and price levels
• Four tablet arm options give users a choice in function, style, and price
• Continuous curved or straight beams conform to the room layout
• Powder-coated beams and bases provide maximum durability
• Optional power and data module and distribution system

Scope
Sequence Seating shall be beam mounted fixed seats with tablet arms. Bases shall be floor or riser mounted. Floor mounted bases can accommodate sloped floors.

Materials

A. Frames
Sequence Seating frames with tablet arms, floor mounted (FSEQ) or riser-mounted (RSEQ) base plate shall be 6" x 8" 11-gauge stamped steel flange with 1/2" diameter anchoring holes pierced at each corner. Pedestal column 11-gauge, 1-1/2" x 2" seamless tubular steel upright shall be welded to base plate. The vertical column on the floor-mounted base shall extend down through the base plate and shall be welded around the vertical column at the pierced opening in the base. For added strength, a steel collar shall be welded around the bottom of the vertical column and welded to the bottom of the floor flange. The vertical column shall be capped with a stamped steel yoke cover to support the beam. A stamped steel yoke shall be welded to the seat spider. Four nuts shall be welded inside the steel yoke to accept screws from the base assembly to lock the seat and support beam firmly into place. The bases shall be positioned directly under the center of the seat. The seats shall be joined in sequence along an 11-gauge, 1½" x 2" seamless steel tubular beam cradled in the yokes on top of the bases. No holes are required to be drilled in the horizontal sequence beam to enable the seats to be positioned on the bases at any point along the beam. Sequence beams shall be furnished in any length with beam segments joined inside a yoke with beam ganging plates that lock the two segments of the beams together. Seats shall be mounted on stamped steel, 11-gauge spiders, secured to the beam with four bolts in the channel nuts welded in the yoke below. Seats not located directly above a base shall be fastened with a yoke only. Plastic flange covers shall be furnished on floor mounted bases only; not available on riser mount bases. Beams can be concave or convex radiused to match the design requirements. Floor flanges can be furnished at specific angles to adapt to sloped floor requirements.

B. Tablet Arm
1. "G" Style Tablet Arm Support shall be two 1-1/8" x 16-gauge steel tubes. The lower end of the tubes shall be welded to the steel seat spider. The 1" x 2" x 14-gauge support bracket is welded between the two vertical tubes and under the 14-gauge steel top plate. Two injection molded pivot cams mount to the support bracket and encompass a 5/8" diameter shaft containing a 3/16" x 7/8" hardened key stop. This assembly provides the total travel motion of the tablet, 0 degrees (use position) and 175 degrees (stored position). Welded to the shaft is a 7-gauge pivot plate having two steel hinge barrels, one which is keyed to restrict the tablet travel from 0 degrees stored to 90 degrees use position. This pivot bracket is assembled with a pin and spring to a hinged 7-gauge steel support plate measuring 2-1/4" x 9" x 7-gauge which in turn fastens to the tablet board with six #12 x 3/4" wood screws. The writing surface "G" style, shall be 9-1/8" x 18-1/8" x 13-3/4", constructed of 15mm Baltic birch plywood core, top faced with .050" HPL and backed with a .040" HPL backer sheet. Edges shall be clear lacquer sealed. Right- and left-hand models with all standard laminate colors are available.

2. "K" Style Tablet Arm
Support shall be die-cast aluminum alloy in finishes to match the frame. Rotating hinge shall be die-cast aluminum with steel pins and springs. Folding mechanism shall have a minimum number of moving parts to prevent wear. Armrest shall be an integral part of the arm support. The cast aluminum support shall have jaws at 90 degrees to the vertical support that match a steel adapter and are secured with four hex-head bolts. The steel adapter shall be welded to a 1-1/2" x 3/4" nominal14-gauge support tube which in turn is welded to the spider on the frame. Tablet arm shall roll up from the front and rotate forward into storage position at side of cast aluminum support. "K" tablet arm not available with power and data.

Tablet arm writing surface, "K" style, shall be 10" x 12" x 13-1/8", plywood core 5/8" thick, 11-plys of Northern hardwood surfaced with .030" high-pressure laminate pattern and matching plain under-surface. Underside shall be routed to accept 3" x 3" hinge plate fastened to the wood with four sheet metal screws. Edges shall be lacquered and sealed. Right- or left-hand models shall be available. All standard laminate colors available. "K" tablet arm not available with power and data.

Optional oversize "K" writing surface - 9" x 12" x 16-1/8". Same construction as above.

3. "S" Style Stationary Tablet Arm
Available with all shells except Vertebra, Versa Conference, Piretti Stack and Piretti 2000 Task. Vertical tubular support of 1-1/8", 14-gauge steel is welded at the bottom to the seat spider under the shell. At the top, a steel plate is welded to the vertical support and secured with screws to the underside of the wood.

Writing Surface – 9-1/2" x 20-3/4" x 12-1/2". High-density particleboard core, 5/8" thick with plastic melamine surface. Right- or left-hand models available. Limited laminate colors available. Edge is painted to match laminate. "S" tablet arm not available with power and data.

Optional oversize "S" writing surface – 10-1/2" x 20-1/2" x 17", plywood core 5/8" thick with .030" high-pressure laminate and plain undersurface. Right- or left-hand models available. Edges shall be lacquered and sealed.

4. "F" Style Flip-up Tablet Arm
Available with all shells except Vertebra, Versa Conference, Piretti Stack and Piretti 2000 Task. Vertical tubing, 1-1/8" x 14-gauge, is welded to seat adapter or spider at the bottom. Formed steel hinge at the top of the vertical tubing allows the tablet arm wood to flip-up for easy entrance or exit from the seat. Hinge is secured to wood with screws.

Writing Surface – 9-1/2" x 20-3/4" x 12-1/2". High-density particleboard core, 5/8" thick with plastic melamine surface. Right- or left-hand models available. Limited laminate colors available. Edge is painted to match laminate. "F" tablet arm not available with power and data.

Optional oversize "F" writing surface – 10-1/2" x 20-1/2" x 17", plywood core 5/8" thick with .030" high-pressure laminate and plain undersurface. Right- or left-hand models available. Edges shall be lacquered and sealed.

5. Optional Plywood Core
5/8" thick, 11-plys of Northern hardwood surfaced with .030" high-pressure laminate pattern and plain undersurface, is available at a slight upcharge. All standard laminate colors are available on plywood core tablet arms.

C. Shells
1. 1000 Series Polypropylene One-piece molded seats and backrest design on high-impact polypropylene. Rolled edges and ribs under seat for extra strength. Nominal flex plus textured surfaces provide good posture support and discourage slouch seating. Four molded-in sills on underside of shell attach to spider with hi-lo screws. Upholstery available (see following option).

2. Dorsal Shell
Two-piece injection-molded thermoplastic seat and backrest with textured seat and backrest surface, on front only. Seat and backrests are joined by a maintenance-free steel hinge with integral spring mechanism which allows the upper back to articulate back with pressure. The hinge to be covered with high-strength plastic bellows. Four molded-in sills on underside of seat attach to spider with hi-lo screws. Upholstery available (see following option).

3. Vertebra Operational Shell
Seat and backrest of injection-molded thermoplastic. Automatic mechanism allows backrest to tilt and seat to slide forward and return to original rest position without the need for levers or controls. Backrest automatic tilting mechanism covered with high-strength rubber/vinyl bellows. Seat slide controls encased inside thermoplastic seat. Seat mounted on heavy-gauge steel beam. Available with erect pitch backrest and upholstery (see following option).

4. Piretti Torsion
Seats and backrests are molded compound curved polypropylene with a textured finish. Seat is two piece construction. Two die cast aluminum backrest supports attach the backrest to the Torsion mechanism. A steel tube is cast into each backrest support for added strength. The back flex is achieved by the Torsion mechanism. It consists of two flat torsion springs captured at both ends by brass bushings which in turn engage with the backrest supports. The Torsion mechanism creates gradually increasing resistance over the full 12 degrees of back flex. Upholstered chairs have partially exposed polypropylene surfaces. Fabric is upholstered over 9/16" foam on the backrest and 1-1/2" foam on the seat.

5. Piretti Stack
Seats and backrests shall be molded compound curved polypropylene with a textured finish. Backrest edges shall have an integral channel into which upholstery is secured. Upholstered chairs shall have partially exposed polypropylene surfaces. Upholstery covers 1/2" foam on the backrest and 3/4" foam on the seat. Molded plastic seat liner covers the seat underside. The back shall tilt 15 degrees. Two hidden lever mechanisms which respond to the user’s weight shall be located in the seat. Each has a double cam action. The rear cam shall be tied to the back structure and shall be set in motion when the occupant leans back. This, in turn, through a spring linkage, shall activate the front cam at a slightly different ratio (1-1/2 to 1). The mechanism shall consist of stamped-steel frame and levers, a steel spring and molded Delrin and nylon components. It shall be calibrated at the factory and shall need no further adjustment.

6. Piretti 2000 Task
Seat and back innerstructure shall be constructed of 1/2" thick 7-ply plywood. Molded foam shall be glued to the plywood and covered with upholstery fabric. A molded plastic seat liner shall cover the seat underside, and a molded plastic back shroud shall cover the back of the chair. A fully upholstered back is also available. An adjustable height back shall be available as standard allowing 2-1/4" of vertical travel in five incremental steps, which shall lock and unlock automatically without levers. An optional adjustable back angle inclination shall also be available in a range from 87 degrees to 100 degrees. The user shall be able to infinitely vary the angle of the inclination of the back by raising a lever. Two hidden lever mechanisms which respond to the user’s weight shall be located in the seat. Each has a double cam action. The rear cam shall be tied to the back structure and shall be set in motion when the occupant leans back. This, in turn, through a spring linkage, shall activate the front cam at a slightly different ratio (1-1/2 to 1). The mechanism shall consist of stamped-steel frame and levers, a steel spring and molded Delrin and nylon components. It shall be calibrated at the factory and need no further adjustment.

7. Optional Upholstery Pads:
1000 Poly and Dorsal series shells. Fixed seat cushion (FS) or fixed seat and back cushions (FSB) are mechanically fastened to front of shell. Foam padded with upholstery cover.

D. Power & Data Components (Optional)
1. Power / Data Module and Distribution System Product shall be designed to bring power and data from the building power source to a position directly below the seat height and between two seats to accommodate the requirements of notebook computers in a temporary use situation. The module shall not extend beyond the front of the seats nor interfere with the operation of the tablet arm or cleaning of the floor. All wires shall be concealed and enclosed in a plastic wireway. The power & data system is available for use with the “G” tablet arm ONLY. All chair styles available on Sequence Seating shall be available with power & data. All power & data components are available in Black only.

2. Power & Data Module
The power and data module shall be 8-5/8” tall x 7-7/8” deep x 3-1/2” wide. The module shall be constructed of molded polycarbonate with a textured finish, meeting UL 94-V0 minimum requirements. The module shall have two 15 amp simplex receptacles and two data ports. These ports will accept any of the included data-jack holder plates, which allow the use of various brands and models of data connectors. The unit will mount to the steel support beam with steel strap and (4) screws. The removable bottom cover will allow access to the wireway and data jacks during and after the installation. The module will attach and provide support for the wireway. The module is available in Black only.

3. Wireway
The wireway shall be constructed of extruded rigid PVC approximately .075” thick x 2-1/8” wide x 3-1/2” tall, meeting UL 94-HB minimum. The interior area of wireway will be approximately 6.6 cubic inches. The wireway shall include a 24-gauge, S-shaped metal divider measuring 1-15/16 x 7/8” and shall be attached to a groove in the wireway. Each end of the wireway will either be supported by a module or contained by 16 ga. steel brackets. These support brackets will also secure a molded polypropylene bellows, which bridges the gap between wireway units. The flexible center to the bellows allows for assembly to straight and radius seating layouts. The wireway is available in Black only.

4. 5 – Wire Electrical Harness
The 5-wire distribution harness of flexible conduit shall distribute power between the power/data modules as well as accept a power infeed harness. Each harness shall consist of a three-way housing on one end and a single plug on the other. The harness(s) will be enclosed in an extruded plastic wireway with a metal divider in the full-length units to separate power and communication or data cables.

5. Power Infeed
The five-wire power infeed shall consist of three 12-gauge hot wires, one 12-gauge ground wire, one 10-gauge neutral wire encased in liquidtight conduit which shall be hard-wired to the building power source. The infeed shall enter the wireway through a 16-gauge steel end cover at either end. Power is fed into the end cover through a ¾” –90 degree elbow being fed by ½” liquidtight conduit. The wire whip is supplied with 24” of liquidtight conduit and a 6” lead of wire. It is recommended that the power source be located below the beam, within (+/-) 6 inches from the center between the first and second seat in the row on the end the infeed is located.

6. Data Infeed
The data infeed shall be constructed of extruded rigid PVC approximately 1-5/16” x 2-1/8” with a flexible hinge on one side to allow feeding of data wires. The data wires will enter the wireway through a field located and created rectangle hole cut in the bottom surface of the wireway. This infeed enclosure will be secured to the floor with a 16 Ga. steel bracket. Data infeeds shall be available in Black only.

7. Retrofit of Power/Data
The power/data system may be retrofitted to Sequence Seating product shipped after June, 2003 provided that the space-planning and tablet-arm guidelines have been met.

8. UL Listing
The UL Listing shall apply to the electrical components only under UL 1286.

E. Colors
Frame finishes - Powder-coated finish is standard on all frames in a choice of black, sand, warm grey, and blue grey. Plastic components match the four standard powder-coated colors. Standard KI fabrics available; C.O.M. (customer’s own material) fabrics require factory approval.

F. Options
Bookracks - Chrome wire bookracks are available.

Note: Floor-mounting anchors are not provided.

Wood Floors

• Minimum two layers of 3/4" thickness tongue & groove
• APA rated grade plywood
• Allow minimum embedment 1-1/2" with lag screws
• Use toggle bolt if less than 1-1/2" embedment

Concrete Floors

• 3000 psi Concrete compressive strength
• 3" thick free of obstructions for 1-1/2"
• 4" thick for riser mount free of obstructions for 2-1/2"
• Riser to be plumb within 1/8 degree
• Minimum anchor embedment 1-1/2"

Note: Warranty null and void if KI product is installed on flooring not meeting minimum structural requirements stated above.

Wood Floors

• 5/16" x 1-3/4" lag bolts; grade 5
• 5/16" flat washers
• 3/8" toggle bolts
• All hardware to be plated
• Four bolt assemblies required per base

Concrete Floors

• 5/16"-18 or 3/8"-16 grade 5 expansion anchors
• Standard flat washers, plated
• LockTite (red) thread lock or equal
• Four screw assemblies required per base

Note: Floor mounting fasteners are not provided.

KI
1330 Bellevue Street
Green Bay, WI 54302
Tel: (920) 468-8100
Fax: (920) 468-0280
E-mail: consultki@ki.com
Web site: http://www.ki.com