Safety
Mother grid
A primary overhead support grid carrying secondary trusses, points, or production systems.
Hazards
- A primary overhead support grid carrying secondary trusses, points, or production systems.
Controls
- Engineering coordinates total loads, bracing, access, hoists, rescue, and inspection.
Personal protective equipment
- Select task-specific PPE only after hazards and higher-order controls have been evaluated.
Regional considerations
- Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.
In practice
Engineering coordinates total loads, bracing, access, hoists, rescue, and inspection.
Explore related entries
Related entries
Sources
- Published Technical Standards — Entertainment Services and Technology Association
- Recommended Practices for Safety and Health Programs — Occupational Safety and Health Administration