Quick Answer
A larger tarp size increases wind resistance due to its increased surface area, which can lead to a greater force exerted by the wind. This can result in the tarp being more difficult to manage, potentially causing it to become unstable or even lift off. A smaller tarp size typically has less wind resistance.
Choosing the Right Tarp Size
When it comes to tarps, size is a crucial factor in determining wind resistance. A general rule of thumb is to choose a tarp that is at least 10 feet by 12 feet, but no larger than 12 feet by 16 feet. This size range provides a good balance between wind resistance and ease of use.
Calculating Wind Resistance
To calculate wind resistance, you need to consider the tarp’s surface area and the wind’s velocity. A larger tarp size increases the surface area, which can lead to a greater force exerted by the wind. For example, a 10x12 foot tarp has a surface area of 120 square feet, while a 12x16 foot tarp has a surface area of 192 square feet. If the wind velocity is 20 miles per hour, the force exerted on the 10x12 foot tarp would be approximately 30 pounds, while the force exerted on the 12x16 foot tarp would be approximately 50 pounds.
Tarp Design and Wind Resistance
In addition to size, tarp design can also play a significant role in wind resistance. A tarp with a rounded corner or a reinforced edge can help reduce wind resistance by creating a smoother surface area. Some tarps also feature a ripstop or diamond pattern, which can help to distribute wind force more evenly across the surface. When choosing a tarp, look for features that minimize wind resistance and make it easier to manage in strong winds.
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