on a quarter pipe how do you make the wood curve??

Question

like you know, when you go up a quarter pipe there has to be a curve in the wood so you can go up it, how do u make it curve

Answer 1

About 8 years ago we built a half pipe in the back yard. Once the frame was built with the necessary curves at both ends, we covered it with 3 sheets of 1/4" plywood. Each sheet was easily bent around the curve and screwed into place - then a liberal amount of "Liquid Nails" construction adhesive and the next sheet was staggered on top of the first and screwed firmly against the first sheet - same for the third sheet. By staggering the sheets, there was overlap and no single seams.
The half pipe took an enormous beating from just about every kid in the neighborhood for about three years before it started showing signs of serious wear and tear - at that time, another layer of 1/4" plywood would have fixed it up, but my son had gone off to college and we finally cut it up and hauled it off.

Answer 2

The best way to construct a quarter pipe is to first decide the height, width, and how steep you want it. When you decide the radius for your desired height and steepness, cut two identical templates (minimally per 8 feet wide) out of plywood and cut several 2x4's at the desired width. Attach the 2x4's so the two inch edge matches the top edge of your templates. Space the 2x4's according to the height and steepness of your quarter pipe (4 inches to 16 inches). The steeper the quarter pipe, the closer the 2x4's should be. Especially, at the bottom of the transition which receives the most force or pressure. When trying to attach the plywood to your 2x4's, using multiple thinner layers is the best application. In order to get the wood to bend, you should use two or more thin layer's of plywood (1/4 or 3/8 inch). If you are only able to use thicker plywood (1/2 inch or 3/4 inch can work - But, 1 inch will NOT bend), apply it horizontally or at a 45 degree angle. Applying vertically is the most likely to cause cracking or breaking in your plywood. Laying the plywood against a wall and soaking it with water can also help in bending thicker plywood. On a large surface 45 degree application has the best wear and the least amount seams affecting the rider.