As a rule, it is necessary to strengthen the greenhouse to preserve it in the winter. A large amount of snow that accumulates on the film or polycarbonate can collapse or damage the frame.
In heavy snowfall, up to 50-60 kg of snow accumulates on each square meter of the surface. In this case, the polyethylene simply breaks through and the snow gets inside. But glass and polycarbonate can withstand such a load, transferring it to the frame, profiles and racks. Those, in turn, may not withstand the entire load on the greenhouse. How can it be strengthened and deformation prevented?
Greenhouse strengthening rules
The traditional reinforcement of greenhouses and greenhouses is to create a higher mechanical stability for the entire frame. In this case, we are talking about both static and dynamic (wind) load. The easiest and most effective way to enhance any type of greenhouse is to add additional profiles or fittings. But at the same time, the elasticity of the structure decreases. That is, with gusts of wind, a large load will act on it.
An arched greenhouses (ClimaOrb Series), as well as low greenhouses, are completely free from such a defect, since they have a fairly good streamlining. The wind blowing through them has practically no barriers. But the rectangular ones get the whole blow. A fairly strong gust of wind with a speed of 50-60 km / s (which is considered a small hurricane) will create a load of 25-30 kg per square meter.
Strengthen the greenhouse before winter
The most important thing is to strengthen the tall greenhouses before the onset of winter. In round or oval ones, an additional pillar is placed in the center for this (or two, if the mount is arched with crossbars in the center). The distance between them in length is 1.5-2 m. If large gaps are allowed, then greenhouses reinforced in this way will be no more stable than without pillars. Similarly, you can strengthen the so-called greenhouses with a gazebo. That is, those that do not have side walls. The main thing in them is to provide unloading for the roof, regardless of the material from which it is made.
How to strengthen the film coating on your own?
As practice has shown, the most effective option is to pull belts with a stroke of 30-50 cm. For this purpose, you can use old belts for drip irrigation. They are very durable, suitable for any greenhouse and their designs can withstand a load of even 100 kg per sq. m (if the frame allows it). Films are expensive, so these savings are appropriate. And a coil of tapes for drip irrigation will cost 2-3 thousand rubles. But one of these is enough for any kind of greenhouses with an area of up to 200-300 sq. m.
How can a wide arched greenhouse be reinforced with a frame made of steel or aluminum profiles? These also include welded oval greenhouses. You can either put the pillars in the center, as well as add reinforcement at the entrance to the ground. That is, to put transverse struts, which will dampen the swing and prevent the deflection of the protruding roof base. This is also suitable for polycarbonate glass roofs. If you need to strengthen the frame of an elevated greenhouse, then it is better to simply overlay it with inclined sheets of metal, wooden frames with a film. That is, create a streamlined shape. The lower base of the laid sheets should be buried in the ground, since if a gust of air enters from below, it will easily rise.
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