The job of the entertainment rigger is to suspend objects such as lighting, sound, scenery and even performers at specific locations above the stage.
In order to avoid catastrophic failures, we must calculate forces such as static and dynamic loads.
The weight of our rigging is not always straight down, the resultant forces must be calculated so that we can adhere to the structural design of our architecture and equipment.
The height, weight, size and position of each object has a direct effect on how we do our math.
Doing our calculation up front is our first line of defense against have a potential failure.
A quick description of concert rigging and the S.T.E.A.M. subjects behind it.
This video gives us a quick visual look at overall rigging and the forces and concerns behind suspending weight.
In order to make sure we do not overload our venue, we must understand forces. This video introduces the concept of resulting force and how it applies to rigging.
Here we utilize Pythagorean's Theorem to help us calculate the distance between 2 points. This distance helps us to utilize the correct length of materials for our application.
The previous video demonstrated calculating a bridle for a symmetrical application. This video demonstrates Pythagorean's Theorem to calculate a bridle that is asymmetrical.
This video demonstrates how force and weight need to be calculated for safety and equipment reasons. Here, we calculate the load/weight of lighting placed upon our truss.
This video continues the calculation of weight. Here we learn how to calculate truss loads and then the initial full load on our motors.
In this video, our load is not uniform or symmetrical. As a result, the tension on each motor will be different. This is the first motor tension calculation.
In this video, we continue our asymmetrical tension calculation by calculating the tension on our 2nd motor.
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