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A Quarter pipe is a ramp used in extreme sports which resembles a quarter of the cross section of a pipe.〔(Deerwood Park Open To Skaters Again )〕 They are most commonly found in skateparks and a skiing/snowboarding terrain park, although the trained eye of an extreme sports fan can find them in modern day architecture. It has a progressively steepening transition, which begins at the ground, and ends at a metal rail or plastic piping called the coping. Riders/skaters may use the ramp to launch themselves into the air, landing back on the ramp transition, or to 'stall' or 'grind' on the coping. Two quarter pipes can be placed opposite to each other to form a half pipe, or they can be placed back-to-back (with no platform between the two lines of coping) to form a spine ramp. ==See also== *Vert ramp *Half-pipe *Mini ramp *Funbox *Mega Ramp 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「quarter pipe」の詳細全文を読む スポンサード リンク
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