Editing Half-pipe (section)

=== Skateboarding, freestyle BMX, scootering, and aggressive inline skating ===
{{See also|Vert ramp}}[[File:BoardmastersVert 1.jpg|thumb|[[Vert ramp]] at the 2010 [[Boardmasters Festival]] during the first skateboard free practice session]]
Frame and support for skateboard, BMX, and [[vert skating]] half-pipes frequently consist of a 2×6×8" lumber ([[Lumber#North American softwoods|actual]] 38 × 140 × 184&nbsp;mm) framework sheathed in plywood finished with sheets of [[masonite]] or Skatelite. Also, a metal frame finished in wood or metal is sometimes used.{{Citation needed|date=June 2011}}

Most commercial and contest ramps are surfaced by attaching sheets of some form of masonite to a frame. Many private ramps are surfaced in the same manner but may use plywood instead of masonite as surface material. Some ramps are constructed by spot-welding sheet metal to the frame, resulting in a fastener-free surface. Recent developments in technology have produced various versions of improved masonite substances such as Skatelite, RampArmor, and HARD-Nox.<ref>[http://www.skatelite.com/product/index.html Skatelite] {{webarchive |url=https://web.archive.org/web/20060716191411/http://www.skatelite.com/product/index.html |date=July 16, 2006 }}</ref> These ramp surfaces are far more expensive than traditional materials.

Channels, extensions, and roll-ins are the basic ways to customize a ramp. Sometimes a section of the platform is cut away to form a roll-in and a channel to allow skaters to commence a ride without dropping in and perform tricks over the gap. Extensions are permanent or temporary additions to the height of one section of the ramp that can make riding more challenging.

Creating a spine ramp is another variation of the half-pipe. A spine ramp is basically two quarter pipes connected at the vertical edge.
[[File:Riverside Skatepark vert ramp 2019 05 05.jpg|thumb|Half-pipe at [[Riverside Skatepark]] (designed by [[Andy Kessler (skateboarder)|Andy Kessler]])

Manhattan, NYC - 2019]]