DIY 3ft. Halfpipe

Intro: DIY 3ft. Halfpipe

my instructions for this half pipe will be as clear and precise as possible.

please comment if you dont have an account just make one it's awesome!

this is good to refer to.

Step 1: The Foundation

if your planning on using this on level cement you wont need to use this step.

for on the grass select a somewhat level aria of ground.

plot out a rectangle that is 8 ft wide 20 ft long.

level it all out make some footers out of bricks the bricks should in the ground so the half pipe will also rest on the ground but the bricks help it a ton.

It's very important that it will be level when it's done. and stay level for a long time.

Step 2: The Transitions

follow the pictures and the notes on the pictures. :) and happy building.

Step 3: Finish the Transitions.

for an eight foot half pipe you need to cut every board 3 ft 11 inches!!


pic 1 in all you need to make 4 of these!

pic 2 do this to each frame

3 you'll end up with 2 of thees.

Step 4: Flooring

you build the final large piece in this step.

you can build this part as long as you want but it sa to be 8 ft from side to side.
mine is 4 ft.long ,yours can be 6 or so but I wouldn't go over that.

the cross beams have to be 7ft 9in.

Step 5: Construct

arrange your built stuff like this and ,put a 3 inch screw every red dot alternating in directions.

they might be hard to get in you might want to take off the closest beam to get your drill in there.

Step 6: Surfacing

the surfacing.


you will need 6 sheets of 1/4 inch ply wood.

and 1 sheet of 1/2 inch ply wood if you are using the 4 ft. flooring witch I think you people with small pocket books should use.


Step 7: Copeing

the coping is the grind rails that go in the notches I told you to cut.

Some people use big bolts that will go all the way through the wood and then use nuts and washers to hold them in place. ***recommended***

big wood screws would also work. *Works*

Step 8: Platform Gaurd Rail.

coming soon.... just look at my quarter pipe instructable it has a nice one but it would be wiser to fully enclose it.

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41 Discussions

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Climoj

1 year ago

What thickness ply are you using to cutt the transitions from

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Dark4ssassin22

2 years ago

Approximately how much did this cost you?

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dragonfrog66

3 years ago on Introduction

hi just wondering can i leave this out in the winter is it waterproof?

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Tech Bro

7 years ago on Introduction

I (with the help of my uncle) built a 4ft quarter pipe that was so sturdy that you could probably drive a car over it, and it would be fine. I was think of building a half pipe in my woods, but was also thinking of adding in things like stairs and grind rails to build a mini skate park. Any suggestions on how to go about this sort of thing?

1 reply

Sure! first draw out what you want, then get google sketchup and start making some plans :D you'll have to play with google sketchup for a but before you get it. but it will work great.

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tomtortoise

7 years ago on Introduction

yo so i got a question. how many 2x4's will i need for this if im making it 4 feet wide. also when i put the 2x4's on the plywood how do i screw it on? into the edge of the ply? and lastly what size screws work best 2 or 3 inch

5 replies

2 or 3 inch will be fine might go with both and use the 2inch for the surfacing and the 3 inch for the frame. when you screw the 2x4's in you just go right through the ply wood. if you wanna spend some money on metal hangers be my guest. I'm sure they help.

well if 2x4s are 8 ft long you'll need 15, 16 just to be safe.

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xxcripple1218xx

Reply 9 years ago on Introduction

aah, idk, i would so much rather trust someone who has actually built one, not just a person who thinks he knows what to do, i mean, yeh, the plans look legit, but just how legit are they?

He did a good job thinkin what to do, ive bult manny ramps in my day and one of my greatest ramps was a mega ramp i bult in vegas.The first half was a 6ft on one side that went in to a 6ft street spine then to another 6ft  quarter then bult in to the side was a 4ft box jump with a giant wall ride on the side of the box jump and after the box jump we set up a 4 pack of dirt jumps... it was a master piece lol

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I'm planning on making one, but i live in a place where its super humid and it rains so so much and its really hot. do i have to do anything on the surface? cause in the other tute, the website with the video in it, it says to use skatelite, which costs a BOMB. is there any other alternative? cause i live on the other side of the planet and wood does not come cheap. so i wanna make sure it doesn't get wrecked easily. the tute awesome by the way!

2 replies

hmm.. well I don't know for sure. but if you put tar paper under and over the first layer of the surfacing it will prevent a lot of water from getting in. then if you weather strip the wood and paint it it will help a lot.

Sorry for the late reply.