First of all, the most important thing is safety, whether the steel structure at the bottom of the stage is firmly supported, whether the counterweight pressed when erecting the truss can support it, and if it is built outdoors, we should also consider the strong wind force and other issues. In short, it must be firm to prevent the stage from collapsing or the truss from falling, causing casualties.

Secondly, we should consider whether the building location is flat or not. If there are bumps, use the adjusting feet to adjust the height uniformly, so that the stage is flat, otherwise the stage board will tilt up and easily trip people. If it is on the grass, it is suggested to put another board under it to prevent the stage legs from falling into the mud and causing unevenness.