Theatre Design & Technology - Feb 1971 - 16

THE METIS
TURNTABLE
The wagon and turntable at the
Met consist of a 6O-foot square wagon
containing a 57-foot diameter turntable. The unit weighs 125,000 pounds,
can operate with a 22-ton load, and
is only 12 inches high.
The overall concept and design for
the turntable, wagon and wagon drives
was by Olaf Soot. The electrical control system and turntable drive units
were designed by the Macton Corporation.
The wagon is powered by 22 onehorsepower motors and is capable of
moving from the back wall of the
opera house to the footlights at speeds
up to 90 feet per minu teo The turntable itself, which uses eight addi-

16

tional motors, can revolve at peripheral speeds of from 15 to 150 feet
per minute.
An earlier revolver failed during
rehearsal for the opening-night production of the new opera house in
1966 and was not considered repairable.
When the turntable was redesigned, rather than use arbitrary and
limited criteria, engineer Soot initiated
a study to project many possible variations of load in order to determine the
critical conditions and safety factors
required for both structure and machinery.
Probabilities, such as certain drive
wheels not making contact with the

floor and the associated redistribution of drive forces, were evaluated.
These force vectors were later used
for the redeSign. As an added precaution, the drive units were arranged to permit operation of the
wagon even if some units failed.
Working with Soot was icholas
Christy, principal designer for Macton, as well as Met Head Electrician
Rudy Kuntner. Charles Urban was the
electrical engineer, and Michael Bronson was project coordinator for the
Met.
The turntable was a gift of the
Henry L. and Grace Doherty Charitable Foundation, Inc., in memory of
Colonel Joseph M. Hatfield, a member of the Met's Board of Directors for
25 years until his death in 1965.
This season the turntable is being
used for productions of Norma and
Die Frau Ohne Schatten.

~ THEATER DESIGN AND TECHNOLOGY

FEBRUARY. 1971



Table of Contents for the Digital Edition of Theatre Design & Technology - Feb 1971

Contents
Theatre Design & Technology - Feb 1971 - 1
Theatre Design & Technology - Feb 1971 - 2
Theatre Design & Technology - Feb 1971 - 3
Theatre Design & Technology - Feb 1971 - Contents
Theatre Design & Technology - Feb 1971 - 5
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