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<br />metal is always perfectly integrated. This lets skaters grind away at the metal while leaving all concrete <br />protected from wear. <br /> <br />9. Full listing of materials to be used in the <br />construction of the skateboard park facility <br /> <br />Pre-Cast Skate Elements: <br /> <br />o Concrete <br />· Construction <br />Type 10 Portland Cement <br />Max. %" aggregate <br />Mechanically vibrated up-side-down in precise concrete mold <br />Pre-cast indoors off-site at least two weeks prior to installation <br />Cured in temperature- and humidity- controlled environment <br />· Characteristics <br />Min. 6000 PSI, Max 7000 PSI compressive strength @ 28 days <br />Slump: 2-3" <br />Air Entrainment: 3-5% <br /> <br />o Reinforcing <br />· #4 rebar steel reinforcing @ 16" o.c. grid steel reinforcing (D) <br />· X" welded wire mesh (WWM) steel reinforcing @ 6" o.c. grid (J) <br />· Synthetic Macro Fiber reinforcement (K) <br />. ASTM Cll16 standards <br />· Minimum cover for all reinforcing shall be 11/2" <br />o Finishing <br />· Surfaces (L) <br />All pre-cast elements must transition to the slab without the use of <br />transition plates <br />Riding surfaces hand-finished smooth after concrete sealer applied <br />Non-riding surfaces primed with a two-part graffiti-resistant epoxy primer <br />and coated again with a two-part polyurethane coating <br />· Joints (M) <br />Hand finished with cementitious grout <br /> <br />o Steel <br />· Grade 304 Stainless Steel anchored at 12" on center with steel studs <br />Round Coping (N) <br />o 2 3/8" Schedule 40 with seams and end caps welded and ground <br />smooth, as required <br />Square Coping <br />o 2" x 2" X 1/8" thick plate with seams welded and ground smooth, as <br />required <br />o 2" x 6" X 1/8" thick plate optional <br />BMX Plate (0) <br /> <br />10 <br /> <br />15131 Clark Ave. - Industry, CA 91745 - P 626-330-5803 x203 - f 626-330-5503 - Kirsten@spohnranch.com <br />