Philip Mackey The Pennsylvania State University Architectural Engineering L/E Option HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Holy Cross Hospital – North Addition

Location: Silver Spring, MD Owner: Holy Cross Hospital Architect: SmithGroup Engineers: Leach Wallace Assoc. (MEP) CM/GC: Bovis Lend Lease Size: 124,000 s.f. Completion Date: July 2005 Final Cost: $21.9 million $7.8 million MEP * North Addition part of a global renovation plan for the facility totaling 260,000 s.f. and costing $69 million. HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Project Background

 Lighting of Registration Space  Lighting of Main Lobby  Electrical Depth  Final Conclusions  Acknowledgements Covered in Final Report  CM Breadth  Mechanical Breadth HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Topics of Discussion

 Lighting of Registration Space  Lighting of Main Lobby  Electrical Depth  Final Conclusions  Acknowledgements HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Topics of Discussion

Architectural Features:  Curved wooden south façade  Frosted glass north façade  Open to concourse/lobby on east and west walls  Metal partitions separate each workstation Design Goals:  Accent architectural features  Limit spill light into admin. Offices  Provide ample task illuminance  30 fc horizontal (reading)  10 fc horizontal (corridor) HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Registration Space

4” Open Downlights (13Q) 2x2 Direct/Indirect Recessed Basket HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Registration Space 4” Open Downlights (18TRT)

Computer Analysis Results: (AGI32) HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Registration Space Allowable Power Density: 1.3 W/ft 2

Final Solution: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Registration Space

 Building Background  Lighting of Registration Space  Lighting of Main Lobby  Electrical Depth  Final Conclusions  Acknowledgements HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Topics of Discussion

Architectural Features:  Information Kiosk central to space  Reading area in SW corner  Art wall adjacent to entrance  Wood-paneled north facade Design Goals:  Bring attention to info kiosk  Accent architectural features  Provide ample task illuminance at kiosk and reading space  Accent back wall to limit depth of space  10 fc horizontal, 3 fc vertical (corridor)  50 fc horizontal (info kiosk)  30 fc horizontal (reading space) HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Main Lobby

HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Main Lobby 6” LED Cove Fixture 6” LED Cove Fixture In Column

6” Recessed Downlights (42TRT)Ceiling Mounted PhotosensorDimmed 6” Recessed Downlights (42TRT) HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Main Lobby

Daylight Study Results: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Main Lobby

Computer Analysis Results: (AGI32) HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Main Lobby Allowable Power Density: 1.3 W/ft 2 (lobby) 1.2 W/ft 2 (reading)

Final Solution: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Lighting Depth – Main Lobby

Schematic: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Electrical Depth – Alternate 1 - denotes 480Y/277V panel - denotes 208Y/120V panel Panel MDP-N Panel LP-1N Panel LP-2N Panel LP-3N Panel LP-4N Panel PP-1N Panel PP-1N1 Panel HCK Panel PP-2N Panel PP-3N Panel PP-4N XFMR T-9 XFMR T-1 XFMR T-11 XFMR T-2 XFMR T-3 XFMR T-4 Panel MDP-N Panel MDP-L Panel PP-2N XFMR T-L Panel PP-2N Panel PP-2N Panel PP-2N Existing Normal Power DistributionProposed Normal Power Distribution

Summary: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Electrical Depth – Alternate 1 - Feeder upsized due to voltage drop

Proposed Standby Power DistributionExisting Standby Power Distribution Schematic: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Electrical Depth – Alternate 2 - denotes 480Y/277V panel - denotes automatic transfer switch SUBSTATION D LIFE SAFETY BRANCH ATS-1 ATS-2 ATS-3 EX. EMERGENCY GENERATOR SETS CRITICAL BRANCH EQUIPMENT BRANCH NORMAL BRANCH EMERGENCY BRANCHES - denotes switchgear with secondary voltage 480Y/277V SUBSTATION D LIFE SAFETY BRANCH ATS-1 ATS-2 ATS-3 ISOLATED EMERGENCY GENERATOR CRITICAL BRANCH EQUIPMENT BRANCH NORMAL BRANCH EMERGENCY BRANCHES ATS-4

Summary: HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Electrical Depth – Alternate 2 - Feeder upsized due to voltage drop

 Building Background  Lighting of Registration Space  Lighting of Main Lobby  Electrical Depth  Final Conclusions  Acknowledgements HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Topics of Discussion

 Lighting Depth –  Registration Space – complimented architectural elements while keeping fixtures minimally obtrusive to the space, provided sufficient illuminance levels under ASHRAE 90.1 Power Density recommendations  Main Lobby – utilized light as a means to call attention to particular functions and artistic features within the space, created a more inviting space by washing the back wall, provided sufficient illuminance levels for various tasks under ASHRAE 90.1 Power Density recommendations  Electrical Depth – investigated cost impact of centralizing normal branch step- down transformers, provided alternative emergency back-up power generation system and assessed the feasibility of proposed implementation HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Final Conclusions

Professional  Leach Wallace and Associates, Inc.  Reese Engineering, Inc. Faculty  Dr. Richard Mistrick  Dr. Martin Moeck  Prof. M. Kevin Parfitt Personal  Family  Friends/ Roommates  Fellow AE Students HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Acknowledgements

HC HOLY CROSS HOSPITAL – NORTH ADDITION FINAL REPORTPhil Mackey Questions? Comments