Thrasher Magazine's: How to build and repair a concrete quarterpipeAustin Kanfoush shows you how to build and fix up a busted DIY QP for under $100. Get your crew together and get busy. This ain’t rocket science. Keep up with Thrasher Magazine here: http://www.thrashermagazine.com http://www.facebook.com/thrashermagazine http://www.instagram.com/thrashermag http://www.twitter.com/thrashermag