Quick Answer
A family of four will need a tarp with a minimum area of 12 square meters (130 square feet) to provide adequate shelter from the elements.
Choosing the Right Tarp
When selecting a tarp for a family camping trip, consider the size and material. A larger tarp provides better weather protection, but a smaller one is lighter and easier to handle. For a family of four, a 2.5 x 4 meter (8.2 x 13.1 foot) tarp made of waterproof nylon or polyester is a good compromise.
Setting Up the Tarp
To properly rig the tarp, you’ll need two sturdy poles, preferably with a diameter of at least 2.5 cm (1 inch) and a length of 2.5-3 meters (8.2-9.8 feet). Anchor the tarp to the poles using tie-outs, which should be spaced about 60-90 cm (2-3 feet) apart. Use a third pole or a tree to create a sturdy ridgepole, which will help shed water and provide additional support.
Tarp Rigging Techniques
To create a more secure and weather-resistant shelter, use a “A-Frame” or “Lean-To” rigging technique. For the A-Frame method, place the poles parallel to each other, with the tarp stretched between them. For the Lean-To method, place one pole at a 45-degree angle and the other perpendicular to it. Both techniques will provide a solid foundation for your tarp shelter, protecting you and your family from the elements.
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