Rigging Services

Counterweight Rigging

This is a rigging system in which the load is balanced by a counterweight so that only a small force is needed to and move the load.

Single Purchase Counterweight Systems

This is a system in which a rope or cable is passed from a lifting device, such as an arbor, winch or person, over a block or series of blocks directly to a load. Force is exerted equal to the load to be held or raised.

Double Purchase Counterweight Systems

This is a system in which a rope or cable is passed from a lifting device, such as an arbor, winch or person, over a block to another block which is attached to the load, and tied off at the previous block so it is double purchased. The system allows twice as much load to be raised for a given effort, but the rope or cable must be pulled twice as far so total work done remains the same.

Double-Purchase-Counterweight-Systems

Motorized Rigging

This is a theatrical rigging system using powered winches and other devices to move equipment, rather than muscle power.

Automated Hoists

Automated-Hoists
Automated-Hoists1

Automated-Hoists-2

 

Lineshaft Hoist

This is a winch with a series of cable drums connected to a gearbox by a common shaft.

Lineshaft-Hoist

 

Self Climber

This is a pipe grid, truss or batten that has an integral device for raising and lowering.

Self-Climber

Counterweight Motorized Assist Hoist

This is an electric hoist for which the capacity is augmented by the addition of a counterweight arbor.

Counterweight-Motorized-Assist-Hoist

Deadhung Rigging

This is directly fixed to the structure or attached at a fixed elevation using chain, rods or cable.

Hand/Drill Operable Winch Systems

This device consists of a hand crank that rotates a drum or pulley through a torque, multiplying/speed reducing mechanism.

Winch-Systems

Stage Curtains

Any fabric panel that is hung as part of a scene or to mask unwanted areas.

Stage Curtain Track

This is a formed or extruded shape that contains moving carriers and supports drapery. Often, they have a cord or other device used to open and close the drapes.

Stage-Curtain-Track

Fire Safety Curtains

This is a curtain that closes automatically on the stage in the event of a fire to prevent heat, smoke and flames from reaching the audience. The curtain may be closed when the space is not occupied to prevent unauthorized access and prevent falls from the edge of the stage.

Straight Lift Fire Curtain

The most common design is the straight lift fire curtain. This type of curtain is used when the height to the rigging steel is equal to, or greater than, the size of the proscenium opening. A counterweight set is used to balance the weight of the curtain. This fire curtain can be installed on a lineshaft hoist as well. Increasing safety in the theater, end users are now replacing the handline used in conjunction with counterweight with a braille winch.

Straight-Lift-Fire-Curtain

Brail Fire Curtains

A brail fire curtain is used when the space above the proscenium opening is either half or less between the height of the proscenium open. A brail curtain is operated by a brail fire curtain winch. Either manual or powered winches are available.

Brail-Fire-Curtains

Pipe Grids

A pipe grid is a horizontal structure that is commonly built either spacing the pipe at 4’ x 4’ or 5’ x 5’ intervals. They can be built in a variety of shapes and sizes. A grid must be supported from the bottom pipe on distances no greater than 10’. Crossover brackets should be used at every intersection. Pipe grids are commonly secured to the structure horizontally to prevent movement. Grids can be found above a stage, in a black box theater and television studios.

Pipe-Grids

Wire Tension Grids

A wire tension grid is a platform constructed of a steel frame with 1/8’’ wire rope woven on 2’’ centers. The grid provides access to equipment and lighting directly below allowing access without ladders or lifts. Lighting transfers through the grid without affecting the beam of light.

Rope Rigging

Rope rigging is a rope hand line running through a sheave. It is primarily used for cable pics.

Projector Lifts

Projector lifts allow projectors to be raised up inside a structure for storage. It is commonly used in auditoriums to remove the projector from site when not in use.

Projection Screens

Fixed
Motorized

Orchestra Pit Lift

An orchestra pit lift is a section of the orchestra pit floor that may be raised and lowered by mechanical or other motorized means.

Orchestra Pit Fillers

An orchestra pit filler is a removable platform that closes off the orchestra pit at the level of the stage or auditorium.

Speaker Rigging

Speakers hung individually or in clusters, either dead hung or on a motorized unit.

Fall Arrest Systems

A fall arrest system is a device that attaches to halt a person or other load that has exceeded a predetermined speed, indicating a falling condition.

Welding and Fabrication

Custom metal fabrication on site or shop welded. Fabrication of winch safety cages to either supplemental or structural steel.

Maintenance and Repair Contracts

These are agreements with individual facilities for semi-annual or annual contracts to assist in the safety and upkeep of the facility.

Rigging Inspections

With a semi-annual or annual inspection of your facility it affords you with comfort of knowing if there are any issues or safety concerns. All inspections are completed by an ETCP certified rigger

Design/Build/Consulting

This service is available in conjunction with our architects and engineers.