how to figure snow load

Winter is a magical season, but it can also be incredibly dangerous. One of the biggest threats comes from heavy snow loads, which can put a tremendous amount of stress on buildings, roofs, and other structures. Knowing how to figure snow loads is crucial if you live in an area where heavy snowfall is common. This article will provide you with the information you need to understand snow loads, calculate them, and take steps to prevent damage.

What is a Snow Load?

When snow accumulates on a roof or other elevated surface, it creates a weight that must be supported by the structure underneath. This weight is known as a snow load, and it can be significant. In fact, snow loads can reach several hundred pounds per square foot, which is enough to cause serious damage if the structure is not properly designed to withstand it. Snow loads can be influenced by a number of factors, including the density of the snow, the slope of the roof, and the temperature.

Calculating Snow Loads

To figure out the snow load on a given structure, you must first determine the weight of the snow. This can be tricky because snow is not a uniform substance. It can be light and fluffy or wet and heavy, and its weight can vary depending on its density. The weight of dry, fluffy snow can range from 7 to 15 pounds per cubic foot, while wet, heavy snow can weigh up to 70 pounds per cubic foot. Once you know the weight of the snow, you can calculate the snow load by multiplying the weight per cubic foot by the depth of the snow in feet. For example, if you have 2 feet of wet snow on your roof and the weight per cubic foot is 50 pounds, the snow load would be 100 pounds per square foot.

Preventing Snow Load Damage

If you live in an area where heavy snowfalls are common, it's important to take steps to prevent snow load damage. One of the most effective ways to do this is by making sure your roof is properly designed to handle the weight of the snow. This may involve reinforcing the structure, adding extra support beams, or modifying the slope of the roof. You should also make sure to remove snow from your roof as soon as possible after a storm. This can be done using a roof rake or a snow blower, but it should only be attempted by someone who is experienced and comfortable working at heights.

Conclusion

Figuring snow loads is an important part of winter preparedness. By understanding the weight and density of snow, you can calculate the amount of stress it will put on your buildings and take steps to prevent damage. If you live in an area where heavy snowfalls are common, it's important to be proactive and take steps to protect your home or business. By doing so, you can enjoy the beauty of winter without worrying about the dangers of snow load damage.