1. University of Delaware Center for the Arts Newark, DE Karen Schulte Mechanical Option Spring 2006

2. Presentation Outline Project Information Project Information Building Information Building Information Existing Conditions Existing Conditions Redesign Goals Redesign Goals Mechanical Redesign Mechanical Redesign Structural Analysis Structural Analysis Acoustical Analysis Acoustical Analysis Conclusions Conclusions Acknowledgements Acknowledgements Questions Questions

3. Project Information Location – Newark, DE Location – Newark, DE Building Use – Performing Arts Center Building Use – Performing Arts Center Delivery Method – Design-Bid-Build Delivery Method – Design-Bid-Build Construction – May 2004 to June 2006 Construction – May 2004 to June 2006 2 nd of 3 bid package construction project 2 nd of 3 bid package construction project

4. Project Team Owner – University of Delaware Owner – University of Delaware Architect – Ayers Saint Gross Architect – Ayers Saint Gross Construction Manager – Whiting Turner Construction Manager – Whiting Turner MEP Engineer – Mueller Associates MEP Engineer – Mueller Associates Structural Engineer – McLaren Engineering Group Structural Engineer – McLaren Engineering Group Civil Engineer – Tetra Tech Civil Engineer – Tetra Tech Acoustical Consultant – Kirkegaard Associates Acoustical Consultant – Kirkegaard Associates

5. Building Information 92,000 sq ft 92,000 sq ft Building uses Building uses –Recital Hall –Proscenium Theater –Orchestra Rehearsal Room –Theater Rehearsal room –Practice Rooms 2” Open joint complete separation between structural systems 2” Open joint complete separation between structural systems

6. Existing Conditions Mechanical Mechanical –6 Air Handling Units  4 constant volume single zone  2 variable air volume –Chilled water and steam provided by the university

7. Redesign Goals Primary redesign goal Primary redesign goal –Implement an underfloor air distribution system in the Proscenium Theater Secondary redesign goals Secondary redesign goals –Improved indoor air quality –Reduced outdoor airflow –Reduced supply fan horsepower

8. Underfloor Air Distribution Conditioned air supplied from plenum Conditioned air supplied from plenum –Pressurized Plenum  Passive Diffusers –Zero-Pressure Plenum  Active Diffusers Warmer supply air temperatures Warmer supply air temperatures Stratification Stratification Ceiling plenum return Ceiling plenum return –Collection of contaminants –Ceiling lighting loads

9. Mechanical Redesign Zone 1 Zone 2 Zone 3 Zone 4Spot Booth Orchestra Pit Stage Barrier Ceiling Catwalk Roof

10. Mechanical Redesign Underfloor System Underfloor System –Airflow – 14,200 cfm –Cooling Coil Capacity – 315 Mbh –Minimum OA % - 22%  20% overall reduction –Supply Air Fan Static Pressure – 2.5in WG Overhead System Overhead System –Airflow – 7,900 cfm –Cooling Coil Capacity – 420 Mbh –Minimum OA % - 44% –Supply Air Fan Static Pressure – 5.0in WG

11. Structural Analysis First Level First Level –Depress foundation and slab on grade 4’ –Elevated slab with grouted CMU blocks for support –Cut minimum amount of rebar for diffusers Second Level Second Level –Elevated slab with grouted CMU blocks for support –Increase beam and column sizes to support increased weight of balcony –Cut minimum amount of rebar for diffusers

12. 1 st Level Structural Analysis

13. 2 nd Level Structural Analysis

15. Acoustical Analysis Proscenium Theater Proscenium Theater –Acoustically Critical  RC 18-22 (N) –Underfloor Air Distribution  RC-17 (N)  NC-16

16. Conclusions Improved indoor air quality Improved indoor air quality Increased required airflow Increased required airflow Decreased minimum amount of outdoor air Decreased minimum amount of outdoor air Decreased cooling coil load Decreased cooling coil load Increased coordination with concrete contractor and placement of diffusers Increased coordination with concrete contractor and placement of diffusers Meets acoustical criteria Meets acoustical criteria

17. Acknowledgements AE Faculty AE Faculty AE Colleagues AE Colleagues Mueller Associates Mueller Associates Family Family Friends (That means you, Spisis) Friends (That means you, Spisis)

18. Questions?

19. 1 st Level Diffuser Layout

20. 2 nd Level Diffuser Layout