Structure for greenhouse roof - has beams connected by ties and longerons and carries one piece ventilator which can pivot and slide

摘要

A single piece ventilator is hinged on supports and can slide or pivot to control the temperature and humidity. The super-structure has beams connected by ties at their lower part and longerons at their upper part. These carry assembly straps and integral locations. The ties and longerious are stayed by multiple ties which are arranged obliquely. Their fixing point on the same integral strap constitutes a reinforcing and stiffening element. This structure forms a framework which carries the single piece ventilators.