Aluminium Stage Structure Calculations

I need structural calculations for a temporary aluminium stage construction. The structure consists of 3 simple truss structures, each measuring 10m x 20m, intended for concert use.

Requirements:
- Calculations must comply with European codes for temporary structures.
- Expertise in structural engineering and experience with aluminium constructions is essential.

Ideal Skills and Experience:
- Structural engineering degree
- Familiarity with European temporary structure codes
- Proficiency in aluminium construction calculations
- Previous experience with concert stage design