1. Howard County General Hospital
Schematic Design Proposal
Casey Schardt

2. Project Information Location: Columbia, Maryland
Size: 81,000 square foot addition , and 44,000 square foot renovation to an existing 230,000 square foot facility
Cost: $20 Million Construction Cost
Constructed between September 2000 and July 2003.
New Emergency Dept., Birthing Dept., Neonatal ICU, Pediatric Nursing Unit, and expanded Imaging Dept.

3. Redesigned Spaces
Lobby/Reception Area: Includes reception desk, waiting room, vending area, and connecting corridors
Nurse Station: Features 2 desk areas open to the surrounding corridor, and an enclosed charting area
Conference Room: To be designed to accommodate meetings, audiovisual presentations, and video conferencing

4. General Considerations
Cost/Efficiency
It is important to minimize costs while maintaining quality of all systems.
This includes initial costs, maintenance costs, and operational costs (power consumption)
Age of Occupants
Increased light levels to accommodate the elderly.
Increased uniformity (older eyes are more sensitive to glare sources.
Atmosphere
It is important to keep the hospital as uplifting as possible, to ease the feelings of anxiety and depression that the patients may be experiencing.
An appearance of cleanliness should be conveyed.

5. Lobby/Reception Area Children’s Area Vestibule Waiting Area Reception
Bulkhead over desk
Reception
Vending

6. Lobby/Reception Area Visual Tasks
Reception Desk
Reading, Paper tasks
Interaction with patients
VDT use
Waiting Area and Vending Area
Light Reading
Relaxing
Corridor
Orientation

7. Lobby/Reception Area Design Criteria
Reception Desk
Ambient Illuminance: 30 fc
Illuminance on Desk: 50 fc
Low uniformity (4:1) on surfaces to minimize veiling reflections both in paper tasks and VDTs
Minimal direct glare
Good color and modeling of faces

8. Lobby/Reception Area Design Criteria
Waiting/Vending Areas
Local level of 30 fc available for reading
Minimal glare to reduce veiling reflections in reading material, such as the glossy pages of magazines
Corridor
At least 5 fc for orientation

9. Reception Area Fluorescent Louvered Slots (in bulkhead)
Semi-Indirect Pendant

10. Reception Area
The semi-indirect pendant is to provide the receptionists with an ambient light level, while minimizing veiling reflections in their VDTs
The fluorescent slots are to provide the necessary additional light on the desk surface, while minimizing glare and veiling reflections from the horizontal surface.

11. Reception Area
Uniform background minimizes veiling reflections in VDT screens
Veiling Reflections are harmlessly bounced upward

12. Waiting Area Table Lamps TV Paintings with spotlights
Indirect Pendants TV

13. Waiting Area
The semi-indirect pendants are to provide ambient light levels in the waiting area. They also provide a bright ceiling to convey a brighter appearance to the room.
Table Lamps are provided to allow the user to increase the light level for reading. They also convey a more comfortable residential mood.
Paintings with spot lights are added to contribute some visual interest to the space for patients to take their mind off waiting.

14. Lobby/Reception Area Corridor and Vending Area Color
These spaces will also have the same pendants to match the waiting area and reception desk.
Color
The standard CCT for the hospital is 4100 K, however this area is to have a lower CCT of 3500 to give the space a less intimidating, more residential atmosphere.

15. Nurse Station Corridor Charting Nurse Station Nurse Station
Staff Corridor

16. Nurse Station Section

17. Nurse Station Visual Tasks
Nurse’s Desk
Reading, Paper tasks
Interaction with patients
VDT use
Charting
Heavy VDT use
Also reading (paper tasks)
Corridor
Orientation

18. Nurse Station Design Criteria
Nurse’s Desks
Ambient Illuminance: 30 fc
Illuminance on Desk: 50 fc
Low uniformity (4:1) on surfaces to minimize veiling reflections both in paper tasks and VDTs
Minimal direct glare
Good color and modeling of faces

19. Nurse Station Design Criteria
Charting
Ambient Illuminance: 30 fc
Low uniformity (4:1) on surfaces to minimize veiling reflections both in paper tasks and VDTs
Minimal direct glare
Corridor
At least 5 fc for orientation

20. Nurse Station Fluorescent Louvered Slots (in bulkhead)
Linear Semi-Indirect Pendants

21. Nurse Station
The linear semi-indirect pendants are to provide the nurses with an ambient light level, while minimizing veiling reflections in their VDTs
The fluorescent slots are to provide the necessary additional light on the desk surface, while minimizing glare and veiling reflections from the horizontal surface.

22. Nurse Station Corridor Color
2x4 lensed troffers will be used in the surrounding corridor spaces.
Color
The hospital’s standard CCT of 4100 K will be used for the nurse station and surrounding corridors.

23. Conference Room
Projection Screen
Marker Board
PC Monitor TV

24. Conference Room Visual Tasks
Meeting
Reading, Paper tasks
Personal Interaction
Presentations
Projection Screen
Marker Board
Television and PC Monitors
Videoconferencing
Viewing Monitor
Camera Considerations

25. Conference Room Design Criteria
Horizontal Illuminance of 50 fc on table
Vertical Illuminance of 30 fc on faces
Vertical Illuminance of 30 fc on white board
Good uniformity on faces for videoconferencing
Minimal veiling reflections on VDTs and paper tasks
Good color and modeling of faces

26. Conference Room
Semi-Indirect Pendants
Wall Slot
Wallwash Downlights

27. Conference Room
The linear semi-indirect pendants are to provide light to the table and give the ceiling a high uniform illuminance
The wallwash downlights, along with the pendants provide indirect light delivering light to the background, and contributing to a high uniform vertical illuminance.
The wall slot is simply to provide light to the white board when necessary

28. Conference Room
The table surface is to have a high reflectance which will help to reflect some light to the underside of people’s faces, increasing uniformity
The wallwash downlights and the direct light from the pendants deliver a direct component for better facial modeling.
Dimming controls will be provided to achieve various scenes for each of the different uses of the space

29. Overall Lighting Design
There are many ways that the efficiency of the lighting system can be improved.
For example, downlights with 2 horizontal compact fluorescent lamps are used extensively throughout the building. These fixtures have an efficiency of 39%.
1x4 linear fluorescent fixtures, which are much less efficient than 2x4 fixtures are also used in many locations
The benefits of using more efficient fixtures will be examined.

30. Overall Lighting Design
T-5 lamps can be used in many types of fixtures also to increase their performance.
More dimming controls will be added in many spaces to allow the users to reduce the amount of light they use, if desired, especially in those spaces with available daylight.
Automatic shutoff devices, such as occupancy sensors will be added in spaces where energy can be saved when no one is in the room.

31. Electrical Design The emergency power loads will be calculated.
A new emergency generator will be sized for the addition (the facility’s existing generator was accurate, but I’ll design one assuming it wasn’t).

32. Electrical Design
An uninterruptible power source will be designed to serve the radiology equipment (currently when the generator starts up, the small power fluctuation affects this sensitive equipment.)
Panels located in the interstitial spaces will be eliminated and served from panels in other locations.

33. Electrical Design
New load calculations will be done to account for reduced lighting loads due to installing more efficient systems.