SEATING SYSTEM

2.1.1

Artificial Leather Upholstery

Artificial leather shall conform to ASTM D 3690, Class [A, heavy duty] [B,

medium duty].

2.1.2

Woven Fabric Upholstery

Woven fabric shall conform to ASTM D 3597, except that it shall be [100

percent flat nylon homespun weave] [or] [_____]. Fabric shall be treated

to resist staining and soiling.

2.1.3

Polyurethane Foam

Polyurethane foam shall be high density, fire retardant, nonhardening and

nonoxidizing and shall have a high resistance to alkalies, oils, grease,

soaps, abrasions, moisture, mildew, and tearing.

2.1.4

Plywood

Plywood shall conform to HPVA HP-1. Face veneers for exposed surfaces

shall be of Grade A [birch] [hard maple] [walnut]. Unexposed veneers shall

be sound grade hardwood or Grade A fir. All face veneers shall be not more

than 1.6 mm 1/16 inch in thickness, of clear stock, and free from

imperfections.

2.1.5

Laminated Plastic Sheets

Laminated plastic sheets shall conform to NEMA LD 3, Type 1, Grade GP 50,

nominal thickness 1.27 mm 0.050 inch.

2.1.6

Molded Plastic

Molded plastic shall be high density with a minimum tensile strength of 23

MPa 3300 psi. Material shall be capable of withstanding outdoor

temperatures ranging from plus 80 degrees to minus 45 degrees C 175 degrees

to minus 50 degrees F. Pigments used shall be of such quality to eliminate

painting plastic parts. Component surfaces shall have a textured finish.

2.2

SEATING SYSTEM

Components and assembly shall be free from objectionable projections or

irregularities. Corners and edges shall be smooth and rounded. Bolts,

nuts, and other fastenings shall be capped. Steel shall be well-formed to

shape and size required. Jointing of members shall be welded, riveted, or

interlocked. Exposed welds shall be ground and dressed smooth. Casting

shall be fine textured, sound, and free of pits, blow holes, and fins.

Lines shall be true, accurate, and true-to-pattern with excess metal or

imperfections removed. Fastening shall be concealed where possible.

2.2.1

Backs

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NOTE: This paragraph provides for backs of

upholstered front panel and a steel or plastic rear

panel. The option of a steel or plastic rear panel

should remain since few manufacturers produce a back

with a steel rear panel. Other types of backs such

as fully upholstered may be substituted as

SECTION 12610

Page 6