minimum of 460 mm 18 inches of leg space under tables, measured from
the inside edge of the seat top to the nearest table support, shall be
provided. A minimum of 460 mm 18 inches from the end of the table top
to the nearest support leg shall be provided.
c. Top: Table top surfaces shall not contain recesses that might hold
water or food particles. The table top width shall be a minimum of 460
mm 18 inches when utilized from one side only, and a minimum of 900 mm
36 inches when utilized from two sides. The table top length shall be
a minimum of 610 mm 24 inches per person.
d. Wheelchair Access: A minimum clear space of 740 mm 29 inches from
the finished grade to the underside of the table shall be provided for
persons with disability to be able to pull a wheelchair beneath the
table top at the end of the table; the minimum clear width shall be 860
mm 34 inches.
2.10.1
Precast Concrete Tables
Provide reinforced precast concrete tables with smooth tops; minimum 35 MPa
4500 psi concrete, 28 day minimum compressive strength, consisting of a
mixture of cement, aggregates, and mineral colors suitable for exterior use
as located on the drawings. Provide manufacturer's standard exposed
aggregate or sandblast finish with clear acrylic coating.
a.
Portland cement:
ASTM C 150, gray, Type I.
b.
Aggregate:
ASTM C 33, washed 2.36 mm No. 8 limestone and sand.
c.
Galvanized wire mesh: 1.9 mm 14 gage, 50 by 50 mm 2 by 2 inch.
d.
Welded wire fabric:
ASTM A 185
e.
Reinforcing steel:
ASTM A 615/A 615M
f.
Integral color:
ASTM C 979, pure mineral oxide, limeproof and
non-fading
g.
Admixture:
ASTM C 260 for air-entraining.
2.10.2
Fiberglass Tables
Provide reinforced fiberglass table tops molded with multiple laminations
of glass fiber impregnated with polyester isophthalic thermosetting resins,
minimum thickness of 6 mm 1/4 inch with 0.30-0.38 mm 12-15 mil thickness
color impregnated polyester gel coat, color as selected.
a.
Steel pedestal base: ASTM A 53/A 53M Schedule 40 steel pipe, [38]
[41] [60] mm [1 1/2] [1 5/8] [2 3/8] inch O.D.
b.
Mounting:
Type as indicated.
c.
Metal finish:
Powder coating conforming to ASTM D 3451 testing.
2.10.3
Perforated Steel Tables
Provide 1.9 mm 14 gage [1.6 mm 16 gage] perforated steel sheet table tops
with solid metal edges as per manufacturer's standard. Weld tops to base
as required for frame support.
SECTION 02870
Page 27
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