Three common greenhouses of the specifications of the structure
The specifications of greenhouse greenhouses are: span of 10 ~ 12 meters, central height of 2.2 to 2.6 meters, long of 50 to 70 meters. The framework is mainly bamboo and wood, some are the use of cement precast columns of the mixed structure, but also some are made of steel bars or steel pipes as a framework, built column-free shed.
1. Bamboo and wood structure shed, with a diameter of 4-5 cm bamboo poles as arch, spacing of 1 meter, set up 6 rows of columns to support. A tie rod is arranged at the upper part of the column 25 cm away from the arch rod.
2. The bamboo-wood structure of the bamboo-wood structure of the shed, with small hanging column support arch, reduce 3/4 column, can appropriately increase the strength of column and tie rod.
3. Steel tube vegetable greenhouse is widely used in steel tube frame greenhouse, because no column is needed, and the cross-section of building materials is small. The advantage is good lighting, easy operation, there is a disadvantage is the high cost, conditions of construction only engaged in the production of more surplus professional households or sufficient funds of the unit.