Before constructing your halfpipe you should determine the full dimensions ahead of time, that is, the length and width of the construction. A larger ramp would be best for skaters who prefer a bit of challenge and/or who are more experienced. Building a halfpipe is not extremely difficult, but will require a bit of carpentry know-how.
Required Materials
¼ Plywood
¾ Plywood
Required Tools
Jigsaw
Nail
Wood Glue
Wood Screws
Roller
Paint Tray
Carriage Bolts
Instructions
1.Start by constructing a life-sized template of the quarterpipe. You will need to utilize this as a guide while constructing your halfpipe. Essentially you will be using this to make sure that all your end supports are identical in size. You may use ¼ plywood to make your template.
2.Join the pieces that you have formed using duct tape or if you feel like being a little bit more proficient, utilize a bit of ¾ ply to make scab plates that you then can join together with normal wood screws.
3.Cut your ply in half along the vertical path, you will be getting more out of the wood by doing this.
4.Cut off a portion of about 2 feet from one of your pieces of ply and join/scab it to the large piece that has been left uncut. By doing this you should now have a 2ft by 10ft rectangular base.
5.Then you will need to build a 5 foot square that you will then jin to your rectangular structure, it will look like a very large boot when you are finished.
6.Mark out your radius utilizing your nail as a guide. The radius should extend from the top corner to the lower corner that is just benaeth the nail.
7.Using a jigsaw cut out the radius for your template.
8.Now you can utilize your quarterpipe to create your end panels. Building your end panels by utilizing two layers of ¾ inch plywood. You will need to laminate the two together to make certain that it remains stable while being use. This can easily be done by using wood glue to attach them together. Place some wood glue in a paint tray and get a roller and place a thin layer of one glue on the area to be laminated. Place the top layer over this layer and ensure that the edges are flushed. Allow this to set overnight. When it has set you may use your template to build the end panels. Cut these out using a jigsaw.
9.Once more you will utilize your template, this time to build intermediate supports. Create scab plates from ¾ ply attached together, make sure that the scab plates are at least two inches away from the edges.
10.Cut a few 2 by 4s into about 3feet by 9 inches in length. Make certain they are cut equally.
11.These 2 by 4s can then be placed on your structure to create the flooring. Nail these in adequately with a hammer and a few wood nails.
12.The most important part of the process is making your support frame. This will enable the halfpipe to support your weight. You may opt to create additional support by securing your structure to a building. Once you have figured the type of framing you will utilize, anchor this to the almost complete structure utilizing carriage bolts.
13.Then create your riding surface using 3/8 inch cdx ply for better flexibility. Run the layers in the same direction ensuring that the end joints are set up unevenly for additional strength. Screw these layers unto your flooring once you have set them up correctly.
Tips and Warnings
It is possible to get your ground more level by shimming under the framing. However, if you are doing this make certain it is executed properly as this may result in a weakened overall structure.
Your halfpipe should not wobble, if this happens you may have to anchor it with some concrete. You can do this by placing your quarter pipes into the ground for additional stability.
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