Ground Support Arc roof made by Alviss stage. That ground support made from 300x300 trusses 2.5m. Internal size of construction is 9,6 wide and 5m deep. Dimensions: Height (max) 7.5m Width 10 m. Depth 6 m. Load capacity 700 kg. Elevation height 6.5 m. This ground support roof assembled from 300x300 mm quad truss. All of them assembling to each other with bolt connection. Vertical truss (stubby) assembled from 3 pcs of 2,5 m long truss. Front and back arc assembling from two arc truss each. Left and right side trusses consists from two of 2.5m truss. Each side truss 5 m. long. Each of arc (front and back) connected with 5m truss at the center top of the arc. Roof is elevated with chain hoists. Load capacity 1 ton of each hoist. Canopy made from heavy duty material. Canopy has deep blue colour. Some trusses have dents and scratches. After elevation at the top end roof fixing with heavy duty straps.