polyethylene; and consist of a minimum 75% plastic profile of high-density
polyethylene, low-density polyethylene, and polypropylene raw material.
The material shall be non-toxic and have no discernible contaminates such
as paper, foil, or wood. The material shall contain a maximum 3 percent
air voids. The material shall be free of splinters, chips, peels,
buckling, and cracks. Material shall be resistant to deformation from
solar heat gain. Material shall have factory-drilled holes. Components
with extra holes not filled by hardware or covered by other components
shall be rejected. The material shall not be painted.
2.5.2
Structural Component
Recycled plastic materials will not be used as load bearing structural
members.
2.5.3
Recycled Plastic Molded As Lumber
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NOTE: Recycled plastic molded as lumber and
wood-polymer lumber are susceptible to both creep
and deflection; therefore, it cannot be used for a
load bearing structural member of protective
surfacing systems. To overcome creep and
deflection, the product is increased in volume of
material and dimension.
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The component shall deflect a maximum 1/360 of the span of the frame when
exposed to a uniform live load of 585 N/m 40 lbs/ft, ASTM D 648. The
product shall meet the structural integrity test requirements set forth in
ASTM F 1487 and ASTM D 6112.
2.6
CURBS
2.6.1
Concrete Curb
Concrete curbs shall conform to Section 02770 CONCRETE SIDEWALKS AND CURBS
AND GUTTERS
2.6.2
Wood
2.6.2.1
Wood Components
Wood components shall be exterior premium grade and free of knots.
Identify wood components obtained from managed forests. Wood components
shall have factory-drilled holes. Components with extra holes not filled
by hardware or covered by other components shall be rejected.
2.6.2.2
Wood Treatment
Wood components that are not naturally rot and insect resistant shall be
treated to resist rot and insect attack by using standard treatment
procedures. Any wood placed up to a maximum 150 mm 6 inches above, or any
portion below the top elevation of the protective surfacing, shall be
treated after fabrication. Creosote, pentachlorophenol, and tributyl tin
oxide are prohibited according to ASTM F 1487.
SECTION 02791
Page 18
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