A type of ramp in which two half pipes are placed back to back allowing transfers. Vert X (NSW) and The Shed (VIC) both have spine ramps.
Type of ramp which consists of two launch ramps sitting back to back with each other and meeting at a point with a small deck or two pieces of coping between them
Two half pipes placed back to back creating a double U shape.
Two quarter pipes placed back to back creating a double "UU" shape.
Two ramps placed back to back with no platform at point of connection; forms an upside down "V" shape.