SKATE PARK SPECIFICATIONS Safety standards All equipment must conform to the construction and design standards as set forth in the DIN 33943 for modular skate park design and construction. All products should be certified compliant by TÜV Rheinland. Noise study A scientific sound-measurement study should be submitted demonstrating a decibel rating of less than 50 (Average office noise) for a skateboard rolling down a ramp from distance of 5 m. The test should be performed using a RION NL-15 sound meter or equivalent. Manufacturing methods All parts shall be pre-cut to finish size using Computer Numerical Controlled (CNC) machines. Finished surfaces shall all be pre-drilled and countersunk. Coping for all Quarter Pipes and Half Pipes should be recessed into the ramp so that no more than 10 mm extends above the skate surface. All copings over 8’ in length that require two sections be spliced together must be fitted with a machined connecting piece that keeps the coping sections perfectly aligned. Transition radius for Quarter Pipes and Half Pipes shall be 2.10 m. Components should be delivered to site individually packaged, labeled and palletized. Materials 1. Skate surface : Rhino-Top 6 mm (1/4’’) high-pressure laminate (HPL) sheets, delivered to site CNC machine cut to finished size pre-drilled and countersunk. Where two sheets meet, the sheets have a seamprotection of 92 mm x 3 mm, flush with the surface. Support struts for the skate surface are 40 x 90 mm pressure treated Norwegian pine (with copper, not CCA), delivered precut. Each sheet shall be fastened to the support structure using zinc-nickel torx head screws with safety pin. Minimum length of screws shall be 50 mm on flat sections of ramps and 70 mm on all curved sections. The manufacturer must provide a 5-YEAR WARRANTY on the skate surface. Substrate should be minimum 10 mm glassfiber reinforced foamed polypropylene sandwich panels. 2. Edge protection – stainless steel The outside edges of all ramps shall be completely covered with a stainless steel edge protection. The edge protection must have a minimum ¼” radius edge that completely covers the outside edge of the ramp, flush with the surface. Edge protections must come cut to length, pre-drilled and countersunk. The skate surface must extend under the edge protection a minimum of 45 mm to provide maximum protection to the skate surface. Where multiple lengths of edge protection are required, the length of each section should be equal to the length of the skate surface over which it is installed. 3. Side and back panels Side panels shall be a minimum 18 mm foamed polypropylene sandwich panels. Side panels shall be CNC machined to accept the support struts. The bottom edge of each side panel shall be fitted with aluminium strips on all ground contact points. The corners are protected by aluminium edge protections. Sides and backs of each ramp must be fully enclosed to reduce noise, prevent unwanted access under the ramps and prevent trash from collecting under the ramps. The sides and backs must be covered with 2 mm galvanized steel panels attached with tamper proof round headed bolts. All the backs should have ventilation holes. Individual basic sections (2 sides connected with supporting struts) should be maximum 1,22 m (4’) wide. 4. Finishing Transition areas of Fun Box combinations, Pyramids and Flat Bank/Platforms must have a 2 mm galvanized steel covering to protect the edges from being damaged. The covering should be made out of 1 piece to cover the complete edge. There must be a galvanized steel protection plate immediately after the coping on all Quarter Pipes and Half Pipes. Toeplates should have a riding up angle less than 15 °. All platform edges should be finished with aluminium profiles flush with the surface. All edges where backs and sides meet should be finished with aluminium profiles. All metal pieces should be screwed and glued to the basis structure with polyurethane glue. 5. Safety Rails All Quarter Pipes, Half Pipes and Flat Banks over 1 m high must have safety rails along the back and sides of the platforms. Safety rails should be hot galvanized steel rails with vertical pickets every 50 mm. Attachment of safety rails to ramps should be strengthened with hooks that connect the two last support struts. Back and side rails should be bolted together. Back rails should be connected with U-profiles riveted to the rails. Rails should be attached to the ramps with round headed tamper proof bolts. 6. Platforms The platform for all Quarter Pipes, Half Pipes and Flat Banks over 1 m high must be a minimum of 1,2 m in depth. 7. Grind Rails The end of every grind rail should be curved down to minimize the effect of an impact with the end of the rail.