ABSTRACT

Scenic effects involving rotating turntables, tracking stage wagons, and the vertical movement of curtains and painted drops have become common in both Broadway and Regional theatre productions. The machines that drive these effects range from small pneumatic cylinders pushing loads of a few pounds an inch or two, to 40 horsepower winches running multi-ton scenery at speeds 6 feet per second or more. Usually this machinery is designed by theatre technicians specifically for a particular show's effect. Compared to general industry, this design process is short, often only a few days long, it is done by one person, design teams are rare, and it is done in the absence of reference material specifically addressing the issues involved. The main goal of this book is to remedy this last situation.

Mechanical Design for the Stage will be a reference for you that will:
* provide the basic engineering formulas needed to predict the forces, torques, speeds, and power required by a given move
* give a technician a design process to follow which will direct their work from general concepts to specific detail as a design evolves, and
* show many examples of traditional stage machinery designs.

The book's emphasis will be on following standard engineering design and construction practices, and developing machines that are functional, efficient to build, easily maintained, and safe to use.

part |2 pages

Part I: The Physics of Stage Machinery

chapter 1|10 pages

Basic Concepts & Definitions

chapter 2|10 pages

The Equations of Constant Acceleration

chapter 4|16 pages

The Friction Force, Ffriction

chapter 5|4 pages

The Lifting Force, Flifting

chapter 6|9 pages

Maximum Power and Force

chapter 7|11 pages

Basic Concepts of Rotational Motion

chapter 8|16 pages

The Torque to Accelerate Mass, Taccel

chapter 9|15 pages

The Torque to Overcome Friction, Tfriction

chapter 10|9 pages

The Lifting Torque, Tlift

chapter 11|16 pages

Maximum Power and Torque

chapter 12|13 pages

Combining Multiple Motions

part |2 pages

Part II: Stage Machinery Components

chapter 13|10 pages

Safety

chapter 14|14 pages

Actuators

chapter 15|18 pages

Speed Reduction

chapter 16|14 pages

Shafting

chapter 17|14 pages

Bearings and Wheels

chapter 18|8 pages

Wire Rope and Sheaves

chapter 19|9 pages

Cable Drums

chapter 20|6 pages

Screw Mechanisms

chapter 21|8 pages

Brakes

chapter 22|7 pages

Control Components

chapter 23|7 pages

Frames and Framing

part |2 pages

Part III: A Mechanical Design Process

chapter 24|14 pages

Mechanical Design in Theatre

chapter 25|18 pages

Developing a Design Specification

chapter 26|14 pages

Concept Design

chapter 27|6 pages

Detail Design

chapter 28|14 pages

Design for Manufacture

part |1 pages

Part IV: A Compendium of Stage Machinery

chapter 29|7 pages

A Compendium of Stage Machinery

chapter 30|18 pages

Winches

chapter 31|26 pages

Turntable Drives

chapter 32|21 pages

Lifts

chapter 33|16 pages

Tracked Scenery