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*Special thanks to Alexander Building Construction, Ewing Cole, and Geisinger Health Systems for providing me with the necessary tools to complete my Senior Capstone Project. |
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PRIMARY ENGINEERING SYSTEMS |
CONSTRUCTION |
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The construction of the 77,560SF addition to the Geisinger Ambulatory Care Campus began on July 05, 2012, with an expected substantial completion date set for February 7, 2014. The construction of the building’s main components (footings, steel structure, interior work) will be completed over 2 phases.
The construction will begin at Phase A (1st and 2nd floors), moving onto Phase B (1st and 2nd floors). This construction sequence was done mainly because of some underground plumbing issues encountered at the beginning of the project, which forced a vertical phasing sequence rather than horizontal.
Because this building is an addition to an already existing medical building, Infection Control Risk Assessment (ICRA) wall panels had to be put in place to prevent any risk of infections and disturbance to patients in the existing building. This wall panel was placed at the connection between the existing building and new construction, and presented a challenge for the tie-in of both phases of the project. This, along with the tie-in of the new to existing MEP systems will be perhaps one of the most challenging tasks for the construction of this project. |
ELECTRICAL |
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A 12,470V 3-Phase underground service provided by Allegheny Power Utility Company will power the existing and new addition of the Geisinger Medical Center at Gray’s Woods. The existing 3φ, 60 Hz transformer will step-down the incoming power down to 480/277V. This transformer will feed the building’s main 2,500A, 480/277 distribution panel. This distribution board then splits the supply into other three different feeds, each powering different areas and mechanical equipment within the building. Various 480 – 208/120V transformers located within the building’s electrical room will be used to serve various appliance panels around the building. The Geisinger Medical Center will replace the existing 250 kW generator serving Phase I by a new upsized 400 kW Emergency Generator to supply emergency power to the whole building in case of any outages. This generator will serve two 400A, 480/277V main emergency distribution panels (MEDP’s) in the main emergency electrical room located in the 1st floor. This room will also house a 300kVA modular UPS Emergency power and Equipment to allow for uninterrupted power in the event of an outage immediately while the generator powers up. |
LIGHTING |
The lighting for the Geisinger Medical Center Phase II addition utilizes a total of 48 different luminaire types to accommodate the many different areas throughout the facility. The main types of lighting fixtures within the facility include Recessed Fluorescent T5, Recessed fluorescent T8s and LED down lights. A total of 34 pole mounted metal halides provide lighting to the exterior and parking lots around the site. The building was designed such way that the public spaces, such as the atrium and waiting areas, receive as much natural daylight possible through the use of skylights and curtain walls. Therefore, very few lighting fixtures are visible in these areas. The lighting design also incorporates occupancy and photosensors around the building with the objective of reducing energy consumption whenever there are no occupants or there’s enough daylight in the space. |
MECHANICAL |
A 3,300 SF Chiller and Boiler Plant (CUB) will be constructed between the existing building and parking garage to house most of mechanical equipment serving the building’s new addition. A new 157 kW cooling tower along with the already existing cooling tower will both feed the many mechanical equipment found in the CUB. The CUB will house those existing and new water chillers, boilers, domestic hot water heaters, pumps, fans, and fire alarm system to provide support to the whole building. Additionally, 4 new air handling units (AHU’s) with a built-in economizer cycle will be located in the rooftop to provide
The distribution of the variable air volume (VAV) systems will be done through sheet metal ductwork to different areas around the building. These will be aided by single duct VAV boxes and hydronic reheat coils. Return air will be done through the plenum ceiling and exhausted through 10 different exhaust fans located in the building’s ceiling. The mechanical system for this building will also receive LEED credits for “Optimize Energy Performance” and “Carbon Dioxide Monitoring”.
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STRUCTURAL |
The Geisinger Medical Center at Gray’s Woods addition is a 2-story steel framed structure supported over cast-in-place concrete foundations. The shallow foundation system designed to support the 77,560 SF building is composed of pier and wall footings, grade beams, and slab on grade. Pier footings are spaced on an approximately 30’ by 30’ grid, and support the 5 inch concrete slab on grade above it.
The second floor and the majority of the building’s flat roof is comprised of a 3 ¼” lightweight cast-in-place concrete slab on a 2” composite metal decking and is reinforced with welded wire fabric. The building’s sloped roof consists of metal roof decks and skylights supported by sloped W8 wide flanges and 6” metal studs.
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ENGINEERING SUPPORT SYSTEMS |
FIRE PROTECTION |
The entire fire protection equipment and installation for the new addition of the Geisinger Medical Center at Gray’s Woods was designed to follow the required IBC 2006 and NFPA 13,25, 70 and 72 regulations. The building’s new construction uses a Wet Sprinkler System connecting to very similar system in the existing building.
Additionally, the building incorporates other fire protecting methods such as automatic fire-rated folding doors, UL rated walls and doors, as well as Spray on Fire proofing (SOFP) as required by code to protect the building’s occupants in case of a fire.
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TRANSPORTATION |
Given that this building is intended to be used for a healthcare facility, elevators will be a crucial element to the mobility between the two floors of this building. One standard pre-engineered hydraulic passenger elevator will be installed in the building’s northeastern corner. This 5,000lb capacity elevator, along with two main emergency stairs will provide patients and doctors to access the different floors within the building’s new addition.
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TELECOMMUNICATIONS |
In accordance with Geisinger’s Information Technology Department’s standards, each floor should have a main telecommunication and satellite telecommunication rooms with the purpose of limiting the amount of wiring required for each substation. Also, nurse call stations are required in each room in accordance to AIA Guidelines for Hospitals and Healthcare facilities.
The low voltage communication systems in the building include a public address (PA) and program (music) distribution system, a cable television (CATV) system, and a security camera system.
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*Note: While great efforts have been taken to provide accurate and complete information on the pages of CPEP, please be aware that the information contained herewith is considered a work‐in‐progress for this thesis project. Modifications and changes related to the original building designs and construction methodologies for this senior thesis project are solely the interpretation of Christopher Ankeny. Changes and discrepancies in no way imply that the original design contained errors or was flawed. Differing assumptions, code references, requirements, and methodologies have been incorporated into this thesis project; therefore, investigation results may vary from the original design.”
This page was last updated on September 26, 2013 by George Andonie and is hosted by the AE Department © 2013-2014
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