Counterweight Rigging

We offer manual and motorized rigging systems for new construction and renovations.

Our experts can design and install complete rigging packages for any size venue or special event.

Manual Counterweight Rigging

Complete counterweight rigging systems consist of one or more counterweight line sets. Each is comprised of a pipe batten suspended from lifting cables which pass over loft block sheaves, then over the head block at one side of the stage and down to the counterweight arbor.

In a Single Purchase Counterweight Set the weight and travel distance of the loaded batten equals the weight and travel distance of the properly loaded arbor. These sets are simple to install and operate, and are very efficient.

In buildings where space for vertical travel of the arbor is not sufficient for single purchase sets to operate, the counterweight side of the system can be double purchased. This is a condition that requires twice the amount of weight on the arbor side. However, only one foot of arbor travel is required for each two feet of batten travel. Double purchase systems are very useful in some situations, but they are more expensive and more difficult to install.

In this High School access to the stage was needed. Several line sets had to be installed on a new bridge we built above the doorway. This cut the travel distance of the arbor. Double purchase line sets made up for the difference.

Motorized Rigging

Motorized rigging is useful when dealing with heavy sets that have multiple elements and must be flown with speed and accuracy in complex sequences. The power of motorized rigging and the precision and repeatability granted by computer-based electronic controls make it possible. It is also useful to raise and lower loads that that arent' easily counterbalanced, like speaker clusters, scoreboards, chandeliers, and of course large curtains.

Motorized rigging varies greatly with every project and application. Please contact our rigging estimators for more information.

Chicago Shakespeare Theater: Motorized curved Austrian curtain, 46' w x 25' h. The rigging system was custom designed and all components, including the curved truss were custom-built in our shop to accommodate the very limited overhead space, and ensure smooth and quiet operation.

Click here for more information.

Rigging Inspections

Don't wait until someone gets hurt!

Routine maintenance is the key to safety and cost efficiency. If your rigging system has not been inspected on a regular basis, it may not be safe. You can get an inspection without any obligation to repair or replace equipment at the time. I. Weiss will send an experienced professional to test and inspect your system, and prepare a written evaluation.

The report will give you an overview of the state of your rigging, as well as list recommendations and a budget for repairs based on safety concerns. Inspection fees depend on the size and extent of your rigging. View or print your safety inspection package here (575kb PDF), or contact us to request a hard copy by mail.

Examples of Unsafe Conditions (click for larger version)