![]() So it's not just your garage that is at risk of damage. If water gets into your garage and breaches the foundation of your house, it can lead to reduced structural integrity. The best way to protect yourself against water damage is to always prepare for any type of weather, even when there's no threat of rain, snow, or high winds. Regardless if an emergency is predicted – flooding can happen unexpectedly with little warning. Water and flood damage can also cause devastation when a storm hits. Water and Flood Damageĭamage from wind during a storm is just one part of the equation. In some cases, it can even blow out the roof. This results in pressure building up inside your garage, which can do more than just knock things around: It can cause structural damage by blowing out windows and doors, knocking down walls if they're weak enough. If the garage door installed is not strong enough, high winds can push it inward. When a hurricane-force storm hits, if you don't have adequate garage door reinforcement, it's likely to be a part of your home that takes the most damage. The Federal Alliance for Safe Homes (FLASH) says that 80% of hurricane damage in residential areas starts with the wind entering through the garage doors. If your house is connected to the garage, the issue can be compounded with a knock-on effect that can cause significant structural damage to your home. ![]() Once your door has been laid open to the elements, anything you have stored in the garage will be exposed to rain and wind. Why Garage Doors are a Problem in Storm Season If you reinforce your garage door, it is an affordable way to increase its resilience and life span. ![]() This makes them a major weak spot and prone to hurricane or storm damage. They are also only supported on either side of the entrance, not at the top or bottom. Garage doors are large expansive surfaces of metal or wood that are often built very light so that they can be raised and lowered easily. The wind, rain, and hail that come with it can be devastating to homes and other structures in its path. We’ve all seen the destruction a storm can do. To calculate the maximum spans of species not shown above, use the Span Calculator or the Span Tables for Joists and Rafters on the American Wood Council website.When the weather turns bad and we look to protect our home, our garage door is often neglected even though it is a major vulnerability. To calculate maximum rafter spans using different design criteria (load, snow load, spacing, grade, etc.) for these common lumber species, see the International Residential Code (IRC). The span values (displayed above) are from the American Softwood Lumber standard sizes. Rafters with ceiling not attached to rafters, ground snow load = 50 Psf, dead load = 20 Psf, deflection limit L/180 The following span table uses a moderate snow load of 50 Psf, but yours could be more or less. Consult your local building code authority to determine the snow load in your area. Note: Snow load factors can be specific to the regional location of a structure. Rafter Span Tables Rafters with ceiling not attached to rafters, live load = 20 Psf, dead load = 20 Psf, deflection limit L/180 The braces need to be supported by a bearing wall, shown in the diagram above.Įxample: In the rafter span table below, the highlighted cell (13-0) indicates that a 2" x 8" Douglas Fir rafter, with a grade of #2, spaced 24" apart, can have a maximum span of 13 feet - 0 inches (13-0) if designed for a live load of 20 Psf, and dead load of 20 Psf. Note also that you can break up the span of a rafter by adding a purlin and bracing to the underside. When calculating the maximum span of a rafter, use the horizontal distance between two vertical supports.
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