Note: Your project report should be double spaced.
Introduction
Our main goal was to design a Performing Arts Center for the CSU campus that would blend well with the rest of the campus. To achieve this goal, our group split into two smaller groups; Alice in one and Simon, Mike, and Karen in the other. Alice concentrated on acoustical aspects of the complex. Simon, Mike, and Karen concentrated on the structural plans.
Location
In this section, we specify the exact location of the structure and why we believe it is a prime location.
Cable-stayed Technology
Here, we present our rationale for using cable-stayed technology. We base this technology on several other existing structures.
Main Hall Acoustics
One of the key characteristics of a concert hall that greatly influences sound
quality, is its reverberation time (the time before the decay of the reflected sound ). In the construction of the main hall for the CSU Performing Arts Center a balance will be
determined that will create a reverberation time of two seconds, as independent of audience size as possible.
Materials
In this section, we discuss the materials to be used. Retractable banners will be built into the ceiling, and can be lowered to create this effect. Cloth seats will be used as they best assimilate an occupied audience area ( Beranek 1962 ). This allows sound within the
hall to be independent of audience size. The low sound absorbency of plaster also makes it ideal for the creation of the desired reverberation time of two seconds.
Design Considerations
The intensity of the direct sound should not be too weak, but at the same time, it must not become uncomfortably loud. This problem will be dealt with by limiting the length of the room, and by designing the surfaces above and around the stage to project the sound evenly throughout the concert hall. Another problem arises with the seats placed under
a balcony. To prevent a muddiness within the sound, the depth under the balcony should not exceed the height of the opening beneath the balcony.
Floor Plans
The Colorado State University Performing Arts Center consists of three levels. The total area of the complex is 56,500 square feet. The basement and ground floors consist of 20,500 square feet apiece. The second floor has a square footage of 15,500.
Conclusion
During the duration of the project, we accomplished our goal of designing a Performing Arts Center for the CSU campus that would blend well with the rest of the campus. A cable-stayed support system for the roof will allow for a compact facility and an unobstructed view for patrons. In order to achieve the best acoustical results in the main performance hall, we have designed a rectangular hall made of plaster. We have also designed the hall so that the depth under the balcony does not exceed the height of the opening beneath the balcony. The total area of the complex will be 56,500 square feet split into three levels. The main hall will have a seating capacity of 1,200.
