THRASHER - 80's ramp plans -- (jpg intensive) | Mountain Bike Reviews Forum
DIY BMX Ramp Plans and Specifications — DD AirBags - AirBags for All Action Sports
Skate Ramp Plans - Etsy
Thrasher Presents: How to Build Skateboard Ramps, Halfpipes, Boxes, Bowls and More (Skate My Friend, Skate): Thatcher, Kevin: 9780965727143: Amazon.com: Books
File:Skateboard Ramp Plans Steel 4ft with deck.pdf - Wikimedia Commons