Categories: Rainwater Harvesting


Step 4: CANVAS

Cut out the canvas pattern (drawing) four times. For smaller models you can downsize it. Make sure you have a hole in at least 1 top corner of each part.

Sew two pieces together on both blue and red line (for the tube sleeve). Repeat this step three times until you have the four patters sewed onto eachother. Now you should have the funnel on the inside and tube sleeves on the outside.
If you have remainings of the fabric at the sides, you can cut them off.

Put the fabric funnel onto the structure. Make a hole in the 4 flaps on the bottom of the funnel. Lace these holes together using the clothesline and attach it to a brick - or other weighty object - and drop this in the central pipe; this will guide the canvas into the central tube and keep it there so the water will flow into it.

When the canvas is attached onto the frame, you can screw theeyebolts back into the end of the small pipes. Make sure they face the same direction as the ones at the bottom.

Use a strong needle (for jeans) because the fabric is quite tuff to stitch.
A double stitching line / pattern is recommended!

Step 5: WIRES

Cut 4 wires at the length of 3,3 m and 4 at the length of 4 m.
Use the clamps to make a loop, the loop-to-loop should be about 3 m.
The 4 short wires are used for the square, rain catching, surface on top.
The 4 long wires are used for anchoring the whole structure to the ground.

Next step: take 4 key rings and attach them each to an eyebolt at the top of the small PVC tubes.
Attach the metal hole from the canvas to the ring in each corner.

Connect the 4 corner rings onto each other, using the 4 short wires (3 m) to become the square surface.
Connect the 4 remaining wires (4 m) to the ring in every corner.

Stretch the net and cut it to size 3x3 m.
Connect the corners of the net to the rings on every corner.
After this you can attach the sides of the fabric and the net with the wires, using tension straps.
You can make some holes in the upper side of the canvas for the tension straps.

Now pull the flexible catcher open until the fabric is under tension.
Then anchor the long wires (4 m) into the ground using pickets.

If the wires between the 4 small PVC tubes are too loose you can adjust the length until it's under enough tension.

Step 6: COVER

Take the cover from the reservoir and make a hole in the middle with about the diameter of the central pipe.
Attach 3 shelf supports ( L ) around the middle hole (every 120°). These will keep the structure straight into the barrel.
Use the same nuts and bolts as in step 2.

Mark and attach the shelve supports onto the cover with the central PVC tube already in place. Because of this the pvc tube will fit exactly between the shelve supports.


Now make a table top at about the size of the barrel (1x1,20 m).
Make a hole in the middle of the plate that has a little larger diameter as the central pipe so the shelve supports can pass through.



Put the barrel in place. Screw the cover on and place the table top on the barrel.
Fix the tabletop with tension straps to the barrel. You will have to drill some holes into the table top, close to the frame around the barrel. Place the tube in the barrel and pull at the wires at each corner.

Once the barrel is in place, you can attach the wires to a picket and fix them into the ground.

Now everything is set up, you're ready to harvest some rain!

via Instructables

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