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425/specs/06-11

Texas Specification No. 425-06-11

Effective Date: December 2, 1991

Last Revision:

SPECIFICATION

for

Chairs, Office, Ergonomic, Upholstered Back

1. SCOPE: This specification establishes the minimum requirements for upholstered back ergonomic office chairs with plywood shells, designed to fit environments to people and the tasks they perform. Seating shall be designed to minimize the adverse effects on the body from sitting and shall provide comfort for any body shape. Reference Texas Specification No. 425-06-10 for chairs with plastic shells.

2. APPLICABLE SPECIFICATIONS AND STANDARDS: Reference to specifications, standards, test methods, and other documents shall be to the issues in effect on the date of the Invitation for Bids. Copies of the referenced documents may be obtained from the issuing organizations at the addresses shown. The following documents form a part of this specification to the extent specified herein:

2.1. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI), 1430 Broadway, New York, NY 10018:

2.1.1. ANSI/BIFMA X5.1-85 -- General Purpose Office Chairs, Tests.

2.1.2. ANSI/HFS 100-88 -- Human Factors Engineering of Visual Display Terminal (VDT) Workstations.

2.1.3. ANSI Z34.2-87 -- Self Certification by Producer or Supplier.

2.2. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM), 1916 Race Street, Philadelphia, PA 19103:

2.2.1. ASTM D 3574 -- Method of Testing Flexible Cellular Materials: Slab, Bonded, and Molded Urethane Foams.

2.2.2. ASTM D 3770 -- Standard Specification for Flexible Cellular Materials: High Resilience Polyurethane Foam (HR).

2.2.3. ASTM D 4157 -- Method for Abrasion Resistance of Textile Fabrics (Oscillatory Cylinder Method.)

2.3. BUSINESS AND INSTITUTIONAL FURNITURE MANUFACTURERS ASSOCIATION (BIFMA), 2335 Burton, Southeast, Grand Rapids, MI 49506:

2.3.1. BIFMA X5.7-91 -- Upholstered Furniture Flammability Standard for Non-residential, Non-Live-In Occupancies.

2.4. FEDERAL SPECIFICATIONS: Superintendent of Documents, U.S.Government Printing Office, Washington, DC 20402:

2.4.1. A-A-2235 - Chairs, Rotary, (Office, Ergonomic, Upholstered).

2.4.2. CCC-A-680A -- Artificial Leather (Cloth Coated), Vinyl Resin, Expanded Layer, (Upholstery).

2.4.3. CCC-C-700J -- Cloth, Coated, Vinyl Coated (Artificial Leather).

2.4.4. TT-C-490 --Cleaning Methods for Ferrous Surfaces and Pretreatments for Organic Coatings.

2.5. STATE OF CALIFORNIA, DEPARTMENT OF CONSUMER AFFAIRS, BUREAU OF HOME FURNISHINGS AND THERMAL INSULATION, 3485 Orange Grove Avenue, North Highlands, CA 95660:

2.5.1. Technical Bulletin No. 117 -- Requirements, Test Procedure and Apparatus for Testing the Flame Retardance of Resilient Filing Materials Used In upholstered Furniture.

3. CLASSIFICATION: Ergonomic chairs shall be classified by type, shell style, and height as follows:

3.1. Type:

3.1.1. Type 1: Posture Back (separate seat and back), no arms, pneumatic height adjustment, with casters.

3.1.1.1. Style A: Two (2) piece upholstered back and seat (plywood inner and outer shell).

3.1.2. Type 2: Posture Back with forward tilt seat, (separate seat and back), no arms, pneumatic height adjustment, with casters.

3.1.2.1. Style A: Same as Type 1.

3.1.2.2. Style B: Same as Style A with adjustable arms.

3.2. Height: See Table One (1).

3.2.1. Height "T": "Task", High back (Types 1 and 2).

3.2.2. Height "S": "Secretarial", Mid back (Type 1 and 21).

Note: See Paragraph 5.9.1. for bench height.

4. DEFINITIONS: Terminology used in this specification is intended to be generic in nature and consistent with meanings that have been defined through general use and/or accepted trade practices. Where variant meanings may exist, the applicable shall be determined by the Texas Procurement and Support Services (TPASS).

4.1. Commission: Texas Procurement and Support Services (TPASS).

4.2. Ergonomic Chair: A chair that, as a minimum, is designed to support the back in its natural curve, distribute the body's weight evenly, and minimize pressure on the thighs behind the knees. Adjustment mechanisms allow quick and easy adjustments to be made by the occupant. These adjustments may include a combination of seat height, seat pitch angle, back height, back upright tilt angle, back tilt tension, and adjustable arms. By changing one (1) or more of these adjustments several times a day to allow movement in the chair, user fatigue is lessened.

4.3. Normal Use: Use which can reasonably be expected in a general office setting operating on a standard forty (40) hour work week. Normal use shall include incidental bumps and scrapes which can occur while sitting in, swiveling, tilting or moving the chair in close proximity to desks, walls, or other objects.

4.4. One Piece Shell: A common outer shell, with a hinged or "scored" inner shell.

4.5. Posture Back: Regardless of seat adjustment, the chair with a posture back shall provide tension adjustment of the back upright tilt angle, or allow for "setting" the tilt angle or free flow of the back upright tilt.

4.6. Two Piece Shell: A separate seat and back.

5. REQUIREMENTS: Products furnished under this specification shall meet or exceed the following requirements:

5.1. General Requirements:

5.1.1. All chairs shall be new, unused, and a currently standard product of an established manufacturer except for such deviations as may be required by this specification.

5.1.2. Chairs shall present a neat, well finished appearance and shall be free of all imperfections and/or defects which might affect appearance, normal life, or serviceability.

5.1.3. Chairs shall have a wide range of adjustments as specified.

5.1.4. Adjustable locking seat and/or back tilt and seat height shall be capable of being fixed at any position within the range. Alternately, the seat and/or back tilt angle control shall allow the seat and back to be stopped from tilting further in any position within the range.

5.1.5. Chairs shall be contoured for comfort and body support, and have lumbar supports.

5.1.6. Back shells shall be contoured (horizontally concave, vertically convex), shall be designed for maximum back support, shall have rolled edges, and shall be tapered from bottom to top.

5.1.7. Seat shells shall be contoured (compound curve), shall be designed for maximum posterior support, shall have rolled edges, and shall have a waterfall front.

5.1.8. All chairs shall be designed for normal use.

5.1.9. The upholstery shall be properly tailored and free of wrinkles, rolls, sags or other defects in appearance. Seams shall be straight, double stitched, and free of broken threads and loose ends. The upholstery shall be attached to the chair in a manner that is free of hazards and designed to prevent slippage and excessive wear. All raw edges shall be completely concealed.

5.1.10. All exposed metal surfaces shall be corrosion resistant.

5.1.11. Bolts and screws, or other fastening devices used to join the outer shall to the inner shell and/or the inner shell to the steel chair framework, shall be as follows, at the manufacturer's option:

"T" nuts shall be concealed and embedded in the shell from the opposite side or shall be joined with grade five (5) bolts and nuts through the double shells. If a steel chair framework is incorporated, the use of steel clips to attach the outer shell to the inner shell is acceptable.

Or, the inner shell may be attached to the steel framework by sliding the two (2) steel uprights into two (2) channels incorporated into the inner shell. The steel uprights shall be held in place by polypropylene catches which engage holes in the uprights.

Or, the "post, stud, or hole" system may be used to attach the outer backs to the inner backs. This enables the insertion of a polypropylene expanding post into the holes or clips of the inner back or vice-versa.

5.1.12. The bolts or fasteners securing the back and seat to the shell, and the arms to the shell, shall not loosen under normal use.

5.1.13. Details not specified herein shall be in accordance with standard commercial practices for products of this type.

5.2. Colors: The colors of the chair finish, seat edging, and upholstery shall be selected form the manufacturer's standard colors, or as specified in the Invitation for Bids.

5.3. Dimensions: Dimensions shall be as shown in Table One (1). Regardless of the ranges shown on the following table, the series offered must have two (2) distinct chair sizes for Type 1 and 2). These distinct sizes shall be designed for various sizes of users' maximum comfort.

5.4. Ergonomic Features: (See Figures).

5.4.1. Chairs shall be designed for various sizes and status of people.

5.4.2. Chairs shall be designed to reduce fatigue and discomfort for persons working at a desk or Video Display Terminal (VDT) for long periods of time.

5.4.3. Chairs shall change, or be changed, as diverse tasks are performed. Chairs shall have free flowing dynamic motion and/or various static posture settings.

5.4.4. Chair adjustments (other than manual height) shall be easily made while seated, and shall not release or change after being set.

5.4.5. Chairs shall have a backrest which:

5.4.5.1. Has sufficient tension to provide adequate support for the operator's lumbar and middle back area.

5.4.5.2. If adjustable, does not require tools for height and tilt.

5.4.5.3. Is concave in the horizontal direction and convex in the vertical direction, sufficient to preserve appropriate curvature of the lower back when the operator is seated with the operator's back resting against the back of the chair.

5.4.5.4. Includes a middle back support area that extend upward from the seat approximately thirteen inches (13").

5.4.5.5. The chair back tapered shape shall support the spine at critical points but shall do so without restricting arm and upper body movement.

5.4.6. Body weight shall be raised in order to raise seat height when the chair has a pneumatic height adjustment.

5.4.7. Chairs shall have contoured padded seats and backs with lumbar reinforcement as follows:

5.4.7.1. Multi-layer, multi-density foam, or

5.4.7.2. Multi-layers of sculptured foam, or

5.4.7.3. Multi-density, contoured sculptured foam, or

5.4.7.4. Contoured, injection folded foam.

5.4.8. Chairs shall provide full three-hundred-sixty degree (360 ) swivel operation.

5.5. Design Requirements:

5.5.1. Chair Controls:

5.5.1.1. Type 1: Posture back chairs shall have pneumatic adjustments of seat height, back height, and back tilt angle adjustments. Back tilt action shall be achieved through coil spring or lever activated slip and/or hinge spring, or lever activated pneumatic tilt mechanism.

5.5.1.2. Type 2: Posture back with forward tilt seat chairs shall be the same as Type 1 with the addition of a forward tilt seat adjustment. The control shall provide a static seat angle adjustment through a (tilt lock) lever, or activated slip and/or hinge spring, or lever activated pneumatic tilt mechanism.

5.5.1.3. Style B: An alternate tilt, which provides a self tilt range of twelve to twenty degrees (12 -- 20 ) overall plus a back tilt range of sixteen to twenty-six degrees (16 -- 26 ) overall may be provided. The control shall also provide for a static back angle adjustment through a tilt lock lever or activated slip and/or hinge spring, or lever activated pneumatic tilt mechanism.

5.5.2. Outer Shell:

5.5.2.1. Style A: Type 1 posture back chairs and Type 2 posture back with forward tilt seat chairs shall have a plywood upholstered back and seat. The back outer shell shall be minimum three ply (3-ply) cross laminated plywood or hardwood upholstery grade, minimum five-sixteenths inch (5/16") thick. The seat bottom shall be covered with black Typar, fabric or equivalent material.

5.5.2.2. Style B: Type 2 posture back with forward and/or rear tilt seat and adjustable arms chairs shall utilize the same type outer shell.

5.5.3. Inner Shell:

5.5.3.1. Style A: Type 1 posture back chars and Type 2 posture back with forward tilt seat chairs shall have an inner contoured back shell of minimum five ply (5-ply) cross laminated plywood base or hardwood, upholstery grade, minimum one-half inch (1/2") thick.

5.5.4. Seats: The polyfoam cushion shall be glued to the plywood base (See Paragraph 5.5.3.). the base shall be minimum five ply (5-ply) cross laminated plywood or hardwood, upholstery grade, minimum one-half inch (1/2") thick.

The upholstery shall be securely attached to the plywood frame with screws or bolt through "T" nuts concealed in the shell, to not detract from the clean line of the chair. Type 1 and 2 shall have field replaceable cushions. All seats shall have a waterfall front. Squared off, traditionally shaped seats are unacceptable.

5.5.5. Backs: Posture backs chairs shall have upholstered back assemblies on both sides. The polyfoam cushions shall be glued to a plywood base. See Paragraphs 5.5.2. and 5.5.3. for back support and plywood requirements. Types 1 and 2 back uprights shall attach through an enclosed back hinge. Back height adjustment shall be provided by means o a positive grip handwheel or lever. Types 1 and 2 shall have field replaceable cushions. All back cushions assemblies shall support the lumbar area.

5.5.6. Arms: All chairs shall be available with optional arms. The arms shall consists of a cast aluminum assembly which is coated with a resilient urethane, electrostatically applied high build epoxy coating to match base and column or coated with a vinyl with color impregnated throughout, or a plastisol; or a steel core assembly coated with resilient urethane or vinyl with color impregnated throughout, or integrally colored, textured, glass reinforced polyester.

Material type shall not cause damage to worksurfaces. Outer vinyl surfaces shall have a uniform finish with no exposed seams.

The Type 2, Style B, chairs shall be equipped with arms consisting of a steel column assembly and armrest pads consisting of self skinning polyurethane foam or integrally colored, textured resilient thermoplastic. Arms shall be adjustable in height with a minimum of two inches (2") of adjustment. Arms shall be easily installed or removed in the field. Fasteners for the arms shall be hidden from view when the chair is in a normal upright position.

Arms style (slanted loop style or, "D" shape or "T" shape or Omega shaped) shall be designed to not interfere with worker's ability to get close to the worksurface and shall provide elbow rest. Arm rest shall allow for lateral thigh movement.

5.5.7. Arm Pads: Arm pad shall be cantilever, Omega, or "T" shape, with plastic or rubberized or molded flexible vinyl caps over polyurethane foam or textured resilient thermoplastic. They shall be available with optional fabric caps, matching the fabric on the seat and the back.

5.5.8. Base: Chairs shall have a swivel base with a five (5) leg "star" design. Base shall be free of sharp edges or protrusions and be equipped with dual wheel casters.

The base shall be high strength, heavy duty cast aluminum alloy, or die formed or welded steel. Arm steel tubing shall be minimum sixteen (16) gauge. alternately, the entire base may be of solid injection molded ABS (Acrylonitrile Butadiene Styrene) or injection molded, color impregnated glass reinforced nylon (polyamide), thermoplastic with a minim static load capacity of three thousand pounds (3,000 lbs.).

Metallic surfaces shall be finished in scuff resistant, low or high gloss, electrostatically applied, high build, powder coat epoxy finish or covered with a protective plastic cap constructed in a manner that will prevent scratching. Color shall be monochromatic to match shell color and shall be available in optional chrome or polished aluminum finish when so specified in the Invitation for Bids. Type 2, Style B chairs may be furnished with polished chrome foot plates. See Paragraph 5.7.

5.5.9. Casters: Casters shall swivel in a bushing or bearing designed for long life. They shall be hard composition, minimum two inch (2") dual wheels, for use on carpet unless otherwise specified in the Invitation for Bids. They shall be the replaceable stem and socket type, three-hundred-sixty degree (360 ) swivel, and not be easily separated from the base.

Note: All casters must comply with 18.3 (1) of ANSI/BIFMA X5.1. Perform the soft tread caster test on all chairs. Disregard the hard tread caster test.

5.5.10. Base Column: Type 1 and 2 columns shall be available with optional height adjustment pneumatic cylinder. The cylinder shall be equipped with a heavy duty shock absorber, minimum seven (7) mil (polyurethane or rubber ring in base of cylinder assembly or heavy duty compression spring in the base tube) to cushion impact with the seat in the lowest height position. Example: Suspa #17-4 Series, Stabil U.S.A. #MK3-5 Series, or equal, with shock absorber. The column shall be finished in a monochromatic color matching other surfaces of the chair.

5.5.11. Mechanism and Controls (Type 1): Mechanism and controls for posture back chairs (Type 1) shall be as follows:

5.5.11.1. All control components for back inclination and seat height adjustment shall be mounted in a heavy duty steel or cast aluminum alloy assembly.

5.5.11.2. There shall be no design characteristics for mechanical castings that will negatively affect appearance, serviceability or that could cause personal injury or damage to clothing.

5.5.11.3. Back angle shall be easily changeable utilizing a control lever on the underside of the seat as required in Paragraph 5.5.1. Control shall provide full range of reclination, locking in any position throughout the adjustment range. A manual back tension adjustment is preferred but not mandatory.

5.5.11.4. Seat height shall be adjustable using a pneumatic cylinder by pressing a single button or lever located on the underside of the seat. The height adjustment range of the seat shall be a minimum of four-and-one-half inches (4-1/2").

5.5.11.5. The pneumatic seat height adjustment shall have the capability to be locked in any position within the height adjustment range by pressing or releasing a single button or lever on the underside of the seat.

5.5.11.6. The back cushion height adjustment shall be performed by a manual adjustment of a knob on the back hinge, and shall have the capability of being locked in multiple positions within the height adjustment range. The height adjustment range shall be a minimum of three inches (3").

5.5.11.7. All adjustment to back height and back angle shall be capable of being accomplished while the used is seated.

5.5.11.8. The lever for push and/or pull operation of seat and back adjustments may by manufactures design be multi-functional (this is not mandatory).

5.5.12. Mechanism and Controls (Type 2): Mechanism and controls for posture back forward tilt seat chairs (Type 2) shall be the same a Type 1 with the following additions:

5.5.12.1. The back shall have the capability to be stopped from tilting further in any position within the inclination range of a minimum of fifteen degrees (15 ) overall by pressing a single releasing button or lever on the underside of the seat. The tension on the back tilt of the chair be adjustable. Control shall provide balance resistance through full range of reclination.

5.5.12.2. Back angle shall be changeable independent of seat inclination.

5.5.12.3. The seat angle (forward tilt) shall be easily changeable utilizing a control lever on the underside of the seat as required in Paragraph 5.5.1. Control shall provide balanced resistance through full range of declination, and locking in any position throughout the adjustment range.

5.5.13. Swivel: The chairs (Type 1 and 2) shall swivel with continuous seat rotation.

5.6. Materials: The materials used in the construction o the chairs shall conform to the requirements stated herein.

5.6.1. Shell: The outer shell be made from plywood or hardwood. See Paragraphs 5.5.2. and 5.5.3.

5.6.2. Padding Material: The seat and back cushions shall consist of high resilience polyurethane foam glued to a plywood or hardwood base. The padding with lumbar reinforcement shall consist of one of the following:

5.6.2.1. Multi-layer, multi-density foam, or

5.6.2.2. Multi-layers of sculptured foam, or

5.6.2.3. Multi-density, contoured sculptured foam, or

5.6.2.4. Contoured, injection molded foam.

The back padding and the seat padding shall be high grade, high resilience, polyurethane foam Grade HR (ASTM D 3770). Foam shall be contoured. Back padding shall be a minimum one-and-one-half inch (1-1/2") thickness. Seat padding shall be a minimum two inch (2") thickness.

All foam shall be flame retardant and be securely bonded to the shell or shell rings.

5.6.3. Nylon Upholstery Material: One-hundred percent (100%) nylon with a minimum weight of fourteen ounces (14 oz.) per linear yard fifty-four inches (54") wide, shall be the standard selection for the chairs.

The material shall be abrasion resistant, exceeding 50,000 double rubs on the Wyzenbeck Test (ASTM D 4157), and shall be flame retardant, and stain resistant. The nylon shall be glued to the foam cushion in all high contact areas.

5.6.4. Vinyl Upholstery Material: When so specified in the Invitation for Bids, vinyl shall be provided. The vinyl upholstery shall be fabric backed and shall have a minimum width of twenty-three ounces (23 oz.) per linear yard and shall meet or exceed the applicable requirements of Federal Specifications CCC-C-700J and CC-A-680A, Class 2, minimum.

The material shall be mildew and flame retardant, and the finish or grain shall be smooth or simulated top grain leather. The vinyl shall be glued to the foam cushion in all high contact areas.

5.6.5. Wool Blend Upholstery Material: When so specified in the Invitation for Bids, an approximate forty percent (40%) wool blend fabric with a minimum weight of fourteen ounces (14 oz.) per linear yard shall be provided. The fabric portion may have an equivalent fabric.

The material shall be abrasion resistant, exceeding 25,000 double rubs on the Wyzenbeck Test (ASTM D 4157), and shall be flame retardant and stain resistant. The wool blend shall be glued to the foam cushion in all high contact areas.

5.7.5. Olefin Upholstery Material: When so specified in the Invitation for Bids, one-hundred percent (100%) "Marquesa Lana" or equivalent olefin fabric with a minimum weight of ten ounces (10 oz.) per linear yard shall be provided.

The material shall be abrasion resistant, exceeding 200,000 double rubs on the Wyzenbeck Test (ASTM D 4157), and shall be flame retardant and stain resistant. The olefin shall be glued to the foam cushion in all high contact areas.

5.6.7. Wool Upholstery Material: When so specified in the Invitation for Bids, one-hundred percent (100%) wool fabric with a minimum weight of seventeen ounces (17 oz.) per linear yard shall be provided. The wool shall be glued to the foam cushion in all high contact areas.

5.6.8. Dual Wheel Casters: Tread material shall be rubber or plastic, with the hardness dependent on the application (title or carpet) with a minimum shore durometer D-scale hardness of thirty-five to fifty (35--50).

5.6.9. Base Covers: Bases which have an enamel finish shall be protected with scuff plates or plastic covers or shells.

5.7. Finish:

5.7.1. Finish: A monochromatic finished base which matches as the back support and arm color, when applicable, shall be standard for swivel chairs.

A thermo-set epoxy resin dry powder coating, electrostatically applied, shall be furnished. There shall be no indication of rust or decay under the coating. As an alternate, the base may be covered with a protective plastic cap constructed in a manner that will prevent scratching.

All surfaces shall be thoroughly cleaned and free of dirt, oil, grease, moisture, or other foreign material prior to finish, and shall show no evidence of chipping. The cleaning and priming of the surfaces shall conform to one of the methods of Federal Specification TT-C-490, at the manufacturer's option.

5.7.2. Chrome Finish: When so specified in the Invitation for Bids, an electroplated chrome finish shall be available for swivel bases. The base shall be subject to the manufacturer's standard electrical and chemical cleaning process. Chrome shall be plated over a nickel base. The chrome shall be corrosion and chip resistant. A polished aluminum finish may be substituted, or chairs amy be furnished with polished chrome foot plates.

5.8. Flammability Requirements: Finished chairs and component materials shall meet or exceed the flammability requirements of BIFMA X5.7 and California Technical Bulletin No. 117.

5.9. Options: When so specified in the Invitation for Bids, chairs shall be furnished with the following options:

5.9.1. Bench Height Adjustment: The height control shall be pneumatic, long lift, with a minimum seven-and-one-half inch (7-1/2") travel, allowing a seat height up to thirty-two or thirty-four inches (32" or 34").

5.9.2. Footing: A chrome finish footing shall be available for bench height chairs.

5.9.3. Arms: Type 1 and 2 shall be available with arms. See Paragraph 5.5.6.

5.9.4. Arm Caps: Types 1 and 2, shall be available with padded arm caps. See Paragraph 5.5.7.

5.9.5. Adjustable Arms: Type 2, Style B shall be available with adjustable height arms.

5.9.6. Base Finish: A chrome or polished aluminum finish shall be available. See Paragraph 5.5.9.

5.9.7. Dual Wheel Casters: Casters for use on tile (hard floor) shall be available. See Paragraph 5.5.9.

5.9.8. Upholstery: See Paragraphs 5.6.3., 5.6.4., 5.6.5., 5.6.6., and 5.6.7. for optional upholstery.

5.10. Color Charts: Bidder shall be furnish each using agency a color chart showing the manufacturer's standard colors and/or finishes.

6. TESTING: Testing shall be done by, or at the direction of the Commission and/or the receiving State agency. Tests shall be performed on products from shipments to ordering agencies. In the event products tested fail to meet or exceed all conditions and requirements of this specification, the cost of the samples used and the cost of testing shall be borne by the supplier.

6.1. Tests: The products furnished under this specification shall be tested by the following methods or approved equally applicable procedures:

6.1.1. ANSI/BIFMA X5.1.

6.1.2. Casters: Test in accordance with Paragraph 18.3(1) of ANSI/BIFMA X5.1. Determine compliance with Paragraph 5.5.9.

6.2. Certification: The vendor shall submit laboratory test results from the manufacturer to the Commission with the bid. See Attachment One (1).

7. SAMPLES: Unless otherwise specified in the Invitation for Bids, no prepurchase samples shall be required. Samples tested shall be obtained from products supplied on regular orders.

8. INSPECTION: Products furnished under this specification shall be inspected by, or at the direction of the Commission and/or the ordering State agency either at the destination or place of manufacture.

9. WARRANTY: All chairs shall carry the manufacturer's standard warranty and shall be guaranteed against defects in materials, workmanship, and performance for a minimum of five (5) years. The warranty shall begin on the date of acceptance of the unit by the ordering agency. During this warranty period, the vendor shall repair or replace defective components and/or units at no cost to the State of Texas.

9.1. Guarantee: The vendor shall guarantee that the chairs will be a standard and continuing item in the manufacturer's product line. The chairs shall be identifiable by regular catalog numbers.

10. AVAILABILITY OF SERVICE: Factory authorized service shall be available within the State of Texas.

10.1. Service: When so specified in the Invitation for Bids, the bidder shall submit a current list of companies or individuals, and their addresses, who can perform service on the products furnished.

10.2. Parts: An adequate supply of repair parts shall be carried in stock within the State of Texas for the expected life of all products furnished under this specification, or factory response time shall be timely and satisfactory if out-of-state.

11. INSTRUCTION BOOKS and/or MANUALS: The vendor shall provide an accurate, concise instruction publication with effective, understandable guidelines for the user to assure optimum results from the adjustable mechanisms with each and every chair. Should the agency personnel need further instruction, bidders must provide telephone information as requested by the agency. The instruction books and/or manuals shall accompany the chair when shipped.

12. PACKING and/or PACKAGING: Packaging for shipment shall be in accordance with the manufacturer's standard practice and in a manner readily accepted by common carriers engaged in interstate commerce. Within the shipping carton, units shall be packed in a manner designed to minimize damage during shipment due to rough or improper handling.

12.1. Delivery: When so specified in the Invitation for Bids, delivery shall be as follows:

12.1.1. Agency receiving dock.

12.1.2. Inside delivery, non-installed.

13. MARKING and/or LABELING:

13.1. Marking: Each shipping container shall be clearly marked with:

13.1.1. Name of contents.

13.1.2. Quantity.

13.1.3. Name and address of the manufacturer.

The container or shipping documents shall include:

13.1.4. Order number or contract number.

13.1.5. Name and address of ordering agency.

13.1.6. Agency requisition number.

13.2. Labeling: Each chair shall bear a securely affixed and durable label showing the following:

13.2.1. Manufacturer's name, or

13.2.2. Manufacturer's trademark.

14. BID LITERATURE: All bids shall be accompanied by a complete and illustrated description of the products being offered.

15. COMPLIANCE: In order for consideration to be given to the bid on an item under this specification, the bidder must comply with the following:

15.1. Equipment Identification: The make, model number, name of the manufacturer, brand or trade name, etc., as applicable, of the item which the vendor proposes to furnish must be stated as part of the bid.

15.2. Exceptions: Notwithstanding the above, any exception taken by the bidder to the requirements and conditions of this specification must be stated and described in detail as a part of the bid. If no exceptions or deviations are identified in this manner, the items must be furnished exactly as described herein.

15.3. Proof: The bidder shall bear the burden of proof of compliance with this specification.

15.4. Certification: Bidders shall provide testing lab certification from the manufacturer that the chairs meet the requirements of ANSI/BIFMA X5.1. See Attachment One (1).

16. PRODUCT INFORMATION:

16.1. Body Size: When ordering chairs, the agency should consider the various sizes and heights of the occupants. Reference Attachments Two and Three (2 and 3) for detailed criteria in performing an internal evaluation when selecting chairs.

16.2. Task: Multi-task work, where movement around the office occurs, minimizes strain and is less fatiguing than dedicated task work. Dedicated task work may involve a deliberate shift in chair position, and preference of one type of chair over another.

16.3. Assessment: Agencies may want to get advice on suitability of the chair design to the work environment from the Vendor and/or Manufacturer Customer Service.

17. ORDERING DATA: When ordering products conforming to this specification, the requisitioning agency shall specify the following:

17.1. The number of this specification (425-06-11).

17.2. Type (See Paragraph 3.1.).

17.3. Height (See Paragraph 3.2.).

17.4. Color (See Paragraph 5.2.).

17.5. Options (See Paragraph 5.9.).

17.6. Type of delivery desired (See Paragraph 12.1.).

17.7. Quantity of each type, size, and color required.

18. AVAILABILITY OF SPECIFICATIONS: Copies of this specification may be obtained by calling or writing:

Bid Services

Texas Procurement and Support Services

P.O. Box 13186

Austin, TX 78711-3047

(512) 463-3416

TABLE 1

DIMENSIONS

Type Height Description Overall Height Overall Height Seat Width Seat Depth Back Width Back Height Base Pedestal Spread
1.00 Task Posture Back,

No Arms,

Style A
31-43 17-24 18-20 18-19 16-18 14-17 23-25
1.00 Secretarial Posture Back,

No Arms,

Style A
27-39 17-24 18-20 18-19 16-17 10-13 23-25
2.00 Task Posture Back,

No Arms, Forward Tilt, Style A

33-43 17-24 18-20 18-19 16-18 15-17 23-25
2.00 Secretarial Posture Back,

No Arms, Forward Tilt, Style A

29-39 17-24 18-20 18-19 16-18 15-17 23-25
2.00 Task Posture Back, Forward Tilt, Adjustable Arms, Style B 33-43 17-24 21-25 18-19 16-18 15-17 23-25
2.00 Secretarial Posture Back, Forward Tilt, Adjustable Arms, Style B 29-39 17-24 w/arms 21-25 18-19 16-17 11.5-14 23-25

ATTACHMENT ONE (1)

CERTIFICATE OF COMPLIANCE

Date:

To: Purchaser "N"

Texas Procurement and Support Services

P. O. Box 13186

Austin, TX 78711-3047

Gentlemen:

By my signature below, I hereby certify:

1. that I an officer of my company and am authorized to make this certification;

2. that the information contained herein is true and correct and is provided in accordance with ANSI standard Z 34.2: Self Certification by Producer or Supplier;

3. that records verifying the information contained herein will be made available, upon request, to the Texas Procurement and Support Services of the State of Texas in accordance with the provisions of ANSI Standard Z34.2;

4. that this certification is for the following product manufactured by my company:

Model No: _______________ Description: _______________

5. that the product identified above meets or exceeds all requirements of the following Texas Specification No. 425-06-11, Chairs, Office, Ergonomic;

6. that the product identified above meets or exceeds all applicable requirements of the following documents as determined by our own testing program or the test results of an independent testing laboratory.

Document Most Recent Test Date Testing Organization
ANXI/BIFMA X5.1.
Test #

Signed: __________________________________________

Title: __________________________________________

Company: __________________________________________

ATTACHMENT TWO (2)

COMFORT FIT FORM

Date: _____________________________________________________________________________

Location: __________________________________________________________________________

Manufacturer: ______________________________________________________________________

Series and Model No: ________________________________________________________________

Bidder: ____________________________________________________________________________

Bidder's Address: ____________________________________________________________________

1. FAMILIARIZATION WITH OPERATIONAL INSTRUCTION AND MECHANISMS: Have you been familiarized with the chairs' operation by the instructions and/or Bidder presentations to confidently adjust the chair to support your body? Yes: __________ No: __________

If not, get assistance. Do not begin the Comfort Fit Test until you know how to adjust the chairs.

Note: Team members are to evaluate based on you observation of the characteristics and comfort points enumerated in Paragraph 3.0. through 7.0.

2. RATINGS: Rate (circle your choice) each criteria before moving on to the next criteria. Rating scale: Excellent -- 1; Above Average -- 2; Average -- 3; Below Average --4; Poor -- 5.

3. SEAT HEIGHT ADJUSTMENT:

<Excellent Poor>
3.1. Ease of adjustment 1.00 2.00 3.00 4.00 5.00
3.2. Lever (s) accessibility and proximity. 1.00 2.00 3.00 4.00 5.00
3.3. Comfort of height range. (Allows both feet to be on the floor). 1.00 2.00 3.00 4.00 5.00

4. COMFORT OF SEAT FIT:

<Excellent Poor>
4.1. Soft and warm vs. hard and cold. 1.00 2.00 3.00 4.00 5.00
4.2. Hip cradles evenly vs. ridges that constrict. 1.00 2.00 3.00 4.00 5.00
4.3. Pressure on the Ischial Tuberosities (Two Seat Bones). 1.00 2.00 3.00 4.00 5.00
4.4. Ridges in back or center at tail bone do not bind. 1.00 2.00 3.00 4.00 5.00
4.5. Thigh pressure at point of contact with front lip. 1.00 2.00 3.00 4.00 5.00
4.6. No obstruction to restrict movement of legs under the chair. 1.00 2.00 3.00 4.00 5.00
4.7. Size adequate. 1.00 2.00 3.00 4.00 5.00

5. ARM COMFORT:

<Excellent Poor>
5.1. Height and/or support of forearm. 1.00 2.00 3.00 4.00 5.00
5.2. Access ease under work surface. 1.00 2.00 3.00 4.00 5.00
5.3. Arm fit design. 1.00 2.00 3.00 4.00 5.00
5.4. Field installation and removal ease. 1.00 2.00 3.00 4.00 5.00
5.5. No restriction of thighs caused by arms. 1.00 2.00 3.00 4.00 5.00

6. COMFORT OF BACK FIT:

<Excellent Poor>
6.1. Support at lumbar region (lower back). 1.00 2.00 3.00 4.00 5.00
6.2. Whole back cable support and cushion width. 1.00 2.00 3.00 4.00 5.00
6.3. Top of chair does not create pressure at shoulder blades. 1.00 2.00 3.00 4.00 5.00
6.4. Ease of reaching behind. 1.00 2.00 3.00 4.00 5.00
6.5. Ease of cushion height adjustment. 1.00 2.00 3.00 4.00 5.00

7. BACK TILT and/or SEAT TILT COMFORT:

<Excellent Poor>
7.1. Flexible, adjust to you vs. you adjust to it. 1.00 2.00 3.00 4.00 5.00
7.2. Ease of adjustment. 1.00 2.00 3.00 4.00 5.00
7.3. Lever (s) accessibility and proximity. 1.00 2.00 3.00 4.00 5.00
7.4. Comfort of recline, upright and Data Entry positions. 1.00 2.00 3.00 4.00 5.00
7.5. Feeling of stability and safety. 1.00 2.00 3.00 4.00 5.00
7.6. Dynamic motion chair moves as you move. 1.00 2.00 3.00 4.00 5.00
7.7. No bottom out cushions when you fall into chair. 1.00 2.00 3.00 4.00 5.00
7.8. Holds you erect vs. sliding or fidgeting. 1.00 2.00 3.00 4.00 5.00

8. INITIALS OF EVALUATOR: ____________________________________________________

ATTACHMENT THREE (3)

RECOMMENDED TEAM MEMBERSHIP

1. CHAIR EVALUATION CRITERIA: For specific criteria, see Attachment Two (2) which includes the following categories:

1. Seat Height Adjustment

2. Arms (if specified)

3. Comfort of Seat Fit

4. Seat and Back Tilt

5. Comfort of Back Fit

2. TEAM: The evaluation team shall be chosen randomly from five (5) body types, described below.

Type Team Member Approximate Body Height Team Member Approximate Body Weight
A. 6'2" and over 200 lbs. -- 240 lbs.
B. 5'8" -- 6'0" 160 lbs. -- 200 lbs.
C. 5'6" -- 5'8" 145 lbs. -- 180 lbs.
D. 5'3" -- 5'6" 120 lbs. -- 160 lbs.
E. 4'11" -- 5'2" 95 lbs. -- 120 lbs.
Required Plug-ins