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How to Build a Skateboard Quarter Pipe Ramp

Quarter Pipe Ramps instructions for Skateboarding, Bikes and More

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A quarter pipe ramp is a must-have ramp for skateboarding. You can also easily use this quarter pipe ramp for bikes, or anything else that you might want a ramp for! The 3' quarter pipe is a medium difficulty project, but not too hard. The quarter pipe skateboard ramp that you will build with these instructions will come out to 3 feet tall and 4 feet wide. The transition is a little less steep at a 6'-0 radius.

Photos and instructions are thanks to Jason over at DIYskate.com. Also, check out Owning Your Own Ramps 101 for more help and instructions on the care for and legality of ramp ownership.

1. How to Build a 3' Quarter Pipe: Materials Needed

Jason, from DIYskate.com
To build your skateboard quarter pipe, you're going to need some building materials. Most of this stuff can be bought at a home improvement store like Lowes or Home Depot. For the piece of steel, you might find it at a store like Home Depot, but if not, look for "Steel" in your local businesses. Here are the building materials used for making this skateboard quarter pipe:
  • Two 4×8, 3/8" plywood sheets
  • One 4×8, 3/4" plywood sheet
  • One 4×8, 1/4" masonite sheet
  • Seven 2×4 boards, 8' each long
  • One 1' 6" × 4', 3/16" steel piece
  • One 2 3/8" × 4' steel pipe
  • One 1lb box of 1 5/8" screws
  • One 1lb box of 2 1/2" screws
Here's a list of the tools that you'll be using for this project:
  • Tape Measure & Pencil
  • Circular saw
  • Drill w/ Philips bit
  • Various drill bits

2. How to Build a 3' Quarter Pipe: Cutting the Boards and Sides

Jason, from DIYskate.com
After you've gathered the materials, the next step is to start cutting. Start with the 2×4's. Cut 13 pieces at 3'-10 1/2 in length (you will get 2 out of each 8' long 2×4). Set them aside.

The other piece of plywood should be cut in the shape shown in the picture here (click the picture for a larger view).

These sizes can all be adjusted, and you can make a larger or smaller quarter pipe ramp if you want - these instructions are for this one size. If you want to change things, however, make sure that you know what you're doing! You don't want to mess up your entire project and have to start over, or worse yet, get someone hurt!

3. How to Build a 3' Quarter Pipe: Drawing the Transition

Jason, from DIYskate.com
There are a few different ways to do this, I'm going to explain it the way I do it. Grab an 8" long 2×4. On one end, drill a hole the diameter of a pencil (about 3/8"). Then measure from the hole you just drilled, out the distance of the transition radius. In this case, 6'-0. Place a screw there but don't go all the way through the 2×4 yet.

4. How to Build a 3' Quarter Pipe: Drawing the Transition, and Cutting It

Jason, from DIYskate.com
Take your 3/4" plywood and lay it on a fairly level surface. Grab another sheet of plywood, your 3/8" sheet should do, you might have to place some scrap wood under it to bring it up to the level of the 3/4". Place it next to the 3/4" plywood, long end to long end, touching.

With the 2×4 you made earlier, screw the screw into the 3/8" plywood where shown above. Now you want to draw a radius using the 2×4 to guide your pencil until you have the transition radius clearly visible on the 3/4" sheet of plywood. Once done, measure up 2'-11 1/4 and out 5'-10 3/4 from the bottom left side to complete drawing the transition.

Very carefully cut on the lines you drew for the transition. The top layer for the deck comes out of this 3/4" ply also, so try not to get too crazy with the jig saw. Once cut, use this transition as your template to trace onto the plywood and cut out the other side.

5. How to Build a 3' Quarter Pipe: Framing

Jason, from DIYskate.com
You are done with the hardest part, now it's time to frame the quarter pipe. Start by attaching the bottom and top 2×4's as shown.

6. How to Build a 3' Quarter Pipe: Framing the Center

Jason, from DIYskate.com
Take the remaining 2×4's and frame the deck and riding surface portion by placing the 2×4's 8" on center except where noted.

7. How to Build a 3' Quarter Pipe: Buying the Coping

Jason, from DIYskate.com
To find the steel, look up "steel yards", "structural steel" or "steel fabricators" and so on in the phone book.

The actual size of the pipe you are looking for will be 2 3/8" outside diameter with a 1/4" wall thickness. This pipe is known by steel shops as...

2" OD, Schedule 80, black steel pipe.

Some steel shops are picky about what it's called so use the above name if they seem confused.

8. How to Build a 3' Quarter Pipe: Drilling the Coping

Jason, from DIYskate.com
There are more than a few ways to attach the coping to the quarter pipe. In my opinion, screws are the only way. Although I came across another method a while back where you can attach the coping with hook bolts (clothesline bolts) that looks promising.

I have still never used this method but I'm interested in trying it out. More on that later. For now we're using screws.

Drill a 3/8" hole on the outside of the steel coping. Now drill a 3/16" hole on the inside of the coping making sure they line up.

9. How to Build a 3' Quarter Pipe: Attach the Coping

Jason, from DIYskate.com
Jason, from DIYskate.com
Once drilled, place the coping in the notch you cut out earlier. By feeding a screw through the outside 3/8" hole, place it into the 3/16" inner hole. This can be tricky but with a little patience you'll get it.

With a drill or screwdriver, screw it down and move on to the next pre-drilled hole. You should have a screw on each end and one in the middle.

By the way, don't worry about the holes interfering with your skating. You'll never feel them, guaranteed (unless they are larger than 3/8").

10. How to Build a 3' Quarter Pipe: Attaching the Deck

Jason, from DIYskate.com
Jason, from DIYskate.com
Take the remaining 3/4" plywood, cut two pieces at 4' by 11 1/4" and screw them to the top of the ramp putting screws about a foot apart in each 2×4.
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