Optimal Load Placement

The design decisions for this plan was controlled by the demand/capacity ratio under the ultimate strength rather any deflections under serviceability. This load case has 2000 lb loads at 8 different points on the rigging, totaling 16,000 lbs of loading. These load placements are located at exactly 3 feet away from the masonary wall at both sides. This decision was made to mitigate the stresses being added onto the truss, to keep additional stresses within 5%.  Figure 26 shows the unity check for this loading plan under load case 1. 

Optimal Load Placement 

Existing Conditions 

Each red/blue horizontal line represents a batten with their weights per chain connection shown on the right side of the Figure. A chain connection is placed at each perpendicular crossing between the batten and the overlying rigging beams (in grey). The second load case (curtains open) can be created by converting the distributed weights on the red battens to just two-point loads at each end of the batten.  

Existing Condition Load Map