Step 1
| Get a 2.0cm thick plywood and mark (using the string and pencil/chalk) a 230cm (7.65 feet), Now make the cuts as the draeing shows, the base must be 250cm and the height 230cm. | |||
| Step 2
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Make 3 copies of step 1,
make sure that they are exactly the same.
Place them about 120cm away, no more than that. make more fo this plywoods if you are building a larger ramp. |
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| Step 3
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The ribs: Wood studs,
they must be about 4cm x 8cm thick.
ANOTHER WAY: TO BUILD QUARTER-PIPES THAT ARE 4 TO 5 TIMES STRONGER THAN YOUR RIB METHOD. THE METHOD EMPLOYS THE RIB METHOD BUT EXPANDS THE METHOD TO TAKE ADVANTAGE OF EVERY LITTLE BIT OF POWER. CUT OUT NOTCHES WHERE THE RIBS GO. THIS WILL ALLOW THE RIB TO DISTRIBUTE THE PRESSURE THROUGHT THE STRUCTURE. |
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| Step 4
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Get 3 wood posts 12cm x 12cm x 230cm (7.65 feet) long. Now join the posts with studs of 2cm x 15cm x 120cm to the plywood as the figure shows. With another stud join all three posts at the back. Make sure all the angles are ok. | ||
| Step 5
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With studs 2cm x 15cm x 150cm join the posts to the plywood but this time at the bottom as the figure shows. With another stud join all three posts at the back. Make sure all the angles are ok. | ||
| Step 6
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To get the 1/4 more
stronger nail studs 2cm x 15cm x 150cm form the top-left to the
bottom-right of the posts (take a look at the figure).
To get it stronger do the same but now with the plywood but this time from the top-right to the bottom-left. (not on the figure). |
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