Structural Considerations for Greenhouses to Prevent Snow Damage
A significant problem for nurseries during the winter season is the damaged caused to greenhouses and equipment during snow storms. As snow builds up on a greenhouse, it begins to put tremendous pressure and weight on the structure. Eventually, if the structure is not set up properly, this weight will take its toll and crush the greenhouse leaving the business owner to deal with the costly task of fixing the damage to equipment, the structure, and the plants inside the structure
Take the following real life case from 2009 as an example of the high costs snow damage can cause:
The Oregon Association of Nurseries says that at a seedling operation in Molalla, more than a foot of snow and ice crushed 72 of 84 greenhouses. Another operator estimated structure and equipment loss at more than $1 million.
Preventive measures can be taken when designing a greenhouse to help manage this risk. When building a greenhouse, be sure that foundation posts are large enough to support the weight of the building and that the greenhouse has diagonal bracing. All post connections should have the proper bolts and screws reinforcing them. When building individual greenhouses next to each other, be sure toleave around one foot of space between individual greenhouses. This will help prevent the sidewalls from collapsing in as snow accumulates.
After the greenhouse is properly built, there are still preventive measures to put into action. Any cracked or broken glass that is noticed should be replaced immediately. The heating system should be turned on and should maintain 60 degrees Fahrenheit and energy screens should be retracted in order to melt the snow away. It is also critical to have a standby generator available in case of a power outage occurring during the snow storm.
Designing a greenhouse properly and taking the correct steps prevent snow damage will reduce business risk for the business owner and save them from some financial trouble.
For more information on greenhouse growers insurance and risk management, visit GrowPro.