How Much Force Can Tip a 16' Tall Theatrical Wall Packed with Lights?

In summary, a college student is seeking help with calculating the necessary force to tip over a wall of one inch box tube designed for a production. They have already determined the withdrawal strength of the lag screws and are now trying to figure out the proper size and number of braces needed. The conversation also touches on the importance of understanding statics and practical factors that can affect the stability of the wall.
  • #1
katotech
1
0
Hello,

I am a college student getting my degree in technical theatre. I will be the Technical Director for our production of Altar Boyz. The designer has designed a wall of one inch box tube. the wall is 16' tall by 32'9" wide. It has an open framing and the lighting designer has decided to basically fill it with lights. I have figured out the withdrawal strength of the lag screws i will be using in the braces to attach the unit to the floor and now i need to figure out the what force it would take to tip the wall forward in order to be sure i use the correct sized braces and amount of lag screws. any help would be beneficial. also i have attached a rough sketch of the side and front views

Thanks
 

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  • #2
Have you had a course or do you have references for STATICS...as distinct from dynamics??

Usually placing braces at a 45 degree angle gives the best overall stability but practical factors can alter that. Also, as your sketch would suggest, a 45 degree brace 1 foot from the base and one foot high won't offer as much stability as one, say, ten feet high...the larger brace provides better torque resistance...torque is the force x distance from the center of rotation. So a force applied at the top of your wall has a 16 times the torque (16 times the effect) as the same force applied one foot from the bottom.
 

1. What is the purpose of studying scenic physics for wall systems?

The purpose of studying scenic physics for wall systems is to understand the principles of how walls and structures behave under different forces and conditions. This knowledge is essential for designing and constructing safe and durable walls that can withstand the weight and pressure of various materials and environmental factors.

2. How does gravity affect wall systems?

Gravity is a fundamental force that affects all structures, including wall systems. It is the force that pulls all objects towards the center of the Earth, and it is responsible for keeping walls in place. Understanding how gravity influences wall systems is crucial for ensuring their stability and preventing collapses or failures.

3. What are the main types of forces that act on wall systems?

The main types of forces that act on wall systems include compression, tension, shear, and bending. Compression is a force that pushes or squeezes materials together, tension is a force that pulls materials apart, shear is a force that causes materials to slide or shift against each other, and bending is a combination of compression and tension forces that causes materials to bend or deform.

4. How do different materials affect the strength of a wall system?

The strength of a wall system is greatly influenced by the materials used in its construction. Some materials, such as concrete, are strong in compression but weak in tension, while others, like steel, are strong in both compression and tension. The choice of materials and their properties can greatly impact the overall strength and stability of a wall system.

5. What are some common challenges faced in designing and constructing wall systems?

Some common challenges faced in designing and constructing wall systems include accounting for various environmental factors, such as wind, earthquakes, and temperature changes, as well as ensuring the structural integrity and stability of the wall. Additionally, the choice of materials, construction methods, and potential load-bearing factors must all be carefully considered in the design process.

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