Stage mechanics covers everything that moves or carries load above and around the stage: motorised and manual fly bars, point and chain hoists, main and intermediate curtains and tracks, orchestra or stage lifts, and the structure that supports them. The design begins with the loads — scenery, lighting, audio, drapes — and the working-load limits, safety factors and access the venue requires.
Safety and compliance are the core of the discipline. Powered machinery is designed and documented to the Machinery Directive and the relevant performance-rigging standards, with overload protection, limit switches, emergency stop and clear control zones. For schools and cultural venues we keep operation simple and the safe usage rules explicit, so non-specialist staff can work without risk.
We coordinate mechanics with lighting, acoustics and AV so bars, reflectors, screens and clusters do not collide, and we deliver the documentation an installer and inspector need: layouts, load schedules, control logic and maintenance requirements. The aim is machinery that is safe, predictable and easy to maintain.
Deliverables
- rigging & machinery layout
- load schedule with SWL & safety factors
- hoist / curtain / lift specification
- control & safety logic (limits, e-stop, zones)
- compliance documentation
- maintenance & inspection plan.
Workflow
01
Loads & use cases
02
machinery & rigging layout
03
safety & control design
04
trade coordination
05
installation, testing, documentation.
Why Acoustic Delta
Acoustic Delta keeps acoustic targets, system design, documentation and commissioning in one engineering workflow, so the installed result can be checked against measurable criteria.
Stage mechanics: define the system before choosing the machinery
Start with the programme of the venue
A theatre with daily repertoire changes and a multipurpose hall with occasional events place different demands on stage machinery. The brief should describe what must move, why it must move, how frequently configurations change and who will operate the system. Include the stage layout, available height and access constraints before discussing individual products.
Agree the interfaces early
Stage equipment interacts with the building structure, power, controls, lighting, sound and fire-safety provisions. Drawings should make these interfaces visible and assign responsibility for each connection. Existing venues also need a record of what is already installed and which information is missing. Unverified dimensions or structural assumptions should be resolved before detailed equipment selection.
Ask for an explicit design package
The scope can include an equipment layout, schedules, interface drawings, control requirements and an installation sequence. Establish which calculations, assessments and specialist approvals are required for the specific venue, and who provides them. Separate machinery supply from building alterations, installation and commissioning so that quotations cover comparable work.
Plan operation and handover
A handover should explain the intended operating modes, operator responsibilities and the documentation supplied with the system. Agree training, inspection and maintenance arrangements before the installation is complete. A phased refurbishment also needs a clear account of which parts of the stage remain available at each step. Send drawings and a description of the venue programme to begin the brief.