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Lowtech

Dans le contexte économique et environnemental actuel, les low-tech connaissent un regain d'intérêt. En effet, ces solutions simples et peu coûteuses offrent une alternative face aux high-tech qui nécessitent des matériaux polluants et rares.

Construire un baril de récupération de pluie

in Lowtech

Build it yourself for less than $100.

install valves garbage cans rain barrels

Family HandymanFamily HandymanNext Project

Introduction

This DIY rain barrel costs less than $100 and works just as well as the expensive one you can buy. Get complete how-to instructions and start saving water with the next rainfall.Family Handyman

Tools Required

  1. 2-1/4 in Hole saw
  2. Cordless drill

Materials Required

  1. 2-in. female threaded electrical (gray PVC) conduit adapter
  2. 2-in. male threaded electrical (gray PVC) conduit adapter
  3. 4×4 treated lumber and construction screws or stainless steel lags
  4. 55-gal. barrel with lid
  5. Glue
  6. if you build a stand to elevate the rain barrel(s)
  7. Screen
  8. Sections of 2-in. PVC pipe
  9. Silicone caulk
  10. Threaded electrical PVC coupler
  11. Unions reducers and valves

How to Make Your Own Rain Barrel

It’s pretty easy to build your own rain barrels from plastic drums or trash cans. Search online for “bottles” or “containers” to find an “open head” plastic 55-gallon drum with a cover (about $60). Or find a used barrel by talking to car wash managers (they buy soap and wax by the barrel). If you can’t find a container you like, buy a large, heavy-duty garbage can (about $35) at a home center. All the other plumbing parts will add up to about $40.

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Project step-by-step (3)

Step 1

Trash Can Rain Barrels

Figure a trash can rain barrels

You can make cheap, functional rain barrels with trash cans and simple PVC plumbing and electrical conduit fittings. Line up as many as you need to meet your watering needs.

To begin, place the drum near a downspout, drill a hole in the side near the bottom and screw in a drain valve. That’s an OK installation if you plan to run a soaker hose to your garden. But if you want to use a wand or a spray nozzle, you’ll need to elevate the DIY rain barrel on a stand for more water pressure. Water is heavy (55 gallons weighs 440 lbs.), so use 4×4 treated lumber for the legs and secure everything with construction screws or stainless steel lags. But don’t place the stand on soft ground. You could kill somebody if the rig toppled over. If you have large gardens and want to store more water, double-size the stand and add a second barrel. We’ve got even more ideas for saving water in your home and yard here.

Step 2

Conduit Adapters

Family Handyman

Cut holes in the bottoms of the barrels with a 2-1/4-in. hole saw. Then screw in a 2-in. male threaded electrical (gray PVC) conduit adapter (electrical adapters aren’t tapered like plumbing adapters, so you can tighten them down all the way) and a 2-in. female threaded conduit adapter to make a watertight hole from which the rainwater can flow. Squirt a thin bead of silicone caulk around the opening and screw on a threaded electrical PVC coupler to cinch the DIY rain barrel between the two fittings (see Figure A). Next, glue together sections of 2-in. PVC pipe, unions (to make winter disassembly easier), reducers and valves. As long as you’re at it, install an overflow pipe so you can direct the excess where you want it.Step 3

Install Valves

install valves garbage cans rain barrels

Family Handyman

Install a large valve to quickly fill watering cans and a smaller valve for a garden hose. Secure the valves to the cross brace with J-brackets. Finally, cut a hole in one of the covers and mount a screen to filter out leaves and debris. Then just wait for the next big rain.

If you worry about a wet or damp basement, a busy sump pump, or muddy puddles in your yard after a heavy rainfall check out How to Build a Rain Garden in Your Yard.

Compost Bokashi, une méthode de compostage très efficiente !

in Jardinage/Lowtech

Introduction

Chaque année, un français produit 320kg (soit environ 90 sacs) de déchets dont 120kg sont des déchets organiques potentiellement valorisables. Ils peuvent notamment servir d’engrais pour les cultures. En campagne, il est simple de composter ses déchets organiques. En ville, c’est plus problématique. Pourtant plus des ¾ des français vivent en milieu urbain, le potentiel de valorisation est donc très important. La production de compost via les déchets organiques ouvre les portes de la culture de plantes et légumes chez soi. En milieu urbain, les objectifs sont variés :

Piplis

Construire un mixeur à pédales

in Lowtech
annou_prevwa_avwe_velo_mixeur_harry_kancel

Pawòl Douvan

Le vélo mixeur est système que j’avais pu essayer en Guadeloupe, lors du 
Tour de Guadeloupe en Voile Traditionnelle (TVGT).
Dans l’un des différents chapiteaux du village du tour, il y avait la possibilité de choisir ses fruits et ensuite d’en faire un smoothie en pédalant simplement un vélo.
Etant l’un enfant de l’informatique, mon premier réflexe a été de trouver sur google le site du constructeur !
Mais pourquoi acheter un produit dispendieux dont la livraison sera compliquée alors que l’on peut faire tout soit-même ! 

Alors j’ai décidé de me lancer dans cette conception et de vous en faire mon retour.

Piplis
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