Justin Herzing
Building Statistics
Technical Assignments
General Building Statistics
Building Name - Walter Reed National Military Medical Center
Building Location - Bethesda, MD
Building Occupant Name - National Military Medical Center Staff
Building Size - 598,895 square feet
Occupancy Type - Medical/Office
Number of Stories - Building A has 6, Building B has 4
Construction Start - July 2008
Construction Finish - November 2010
Overall Project Cost - $641 Million
Delivery Method - Design-Build
Applicable Building Codes
International Building Code 2003
Unified Facilities Criteria (UFC) - Fire Protection Engineering,      UFC 3-600-10N
UFC - General Building Requirements, UFC 1-200-01
UFC - Medical Military Facilities, UFC 4-510-01
Uniform Federal Accessibility Standards (UFAS)
NFPA-101 Life Safety Code 2006 Edition
NFPA-1 Uniform Fire Code 2003 Edition
Zoning Requirements
Building A - Type 1B, Use Group Business B
Building B - Type 1A, Health Care Occupancy I-2
Click on image to enlarge
Image Courtesy of HKS, Inc.
Project Team Information
Naval Facilities Engineering Command
General Contractor
Clark/Balfour Beatty, A Joint Venture


Balfour Beatty

HKS Inc.
Mechanical Engineer
Southland Industries
Structural Engineer
Cagley & Associates
Plumbing Engineer
Southland Industries
Electrical Engineer
M.C. Dean
Two new buildings are being constructed on the existing National Naval Medical Center located in Bethesda, Maryland.  Once complete the campus will be renamed as the Walter Reed National Military Medically Center as part of the Governments Base Realignment and Closure Program (BRAC).  Building A and B will flank an existing historical building that was originally sketched by Franklin Delano Roosevelt and constructed during the early 1940's.  This large tower building can be seen on the rendering shown above which was provided by HKS Inc.  The design of both of the new buildings was influenced heavily by the historic preservation requirements (See Below).  Building A is the larger of the two buildings and is the location for outpatient services such as Children’s Health, Cancer Treatment Center, Neurology, Physical Therapy.  Building B is where patient bedrooms, operating rooms, and the ambulance receiving center are located.
Historical Requirements
  Special considerations were taken into account in order to compliment the design as well as match the architectural materials that were used for the existing campus facades.  Hartman Cox Architects was hired to be part of the team and work directly with the State Historic Planning Office (SHPO) as well as the National Capitol Planning Commission (NCPC).  The historical considerations of this building played a large role in the building material selection as well as the facade and glazing design.
Building Enclosure
  Building Facades: The exterior walls are constructed using precast concrete panels with batt fiberglass insulation ad 5/8" gypsum board providing a U value of 0.061.  Located above most of the glazing is a 3" thick metal Centria panel with a 1/2" reveal providing a U value of 0.427.
  Roofing Material: The roofing system of both buildings is comprised of 6" polyisocyanurate topped with a 3/4" perlite board and finished with 1/4" of bituminous roofing.  All of the roofing material is supported by a 10" thick heavy weight concrete roof slab.
  Glazing Material: The glazing that is used is a Guardian Ultra White Super Neutral 54 providing a U value of 0.41.  The super neutral glass combines performance aspects from glare reduction, insulation properties, and clarity.  Both the solar heat gain coefficient and the visual light transmittance values have been determined based upon simulations using the program Window 5.2 from the Lawrence Berkley National Laboratory and have values of 0.272 and 0.447 respectively.
Sustainability Features

Increasing the ventilation to 100% outdoor is able to provide both the staff and patients in the hospital a healthy and productive environment to be in by not returning potentially contaminated air to the occupied zone.  In order to offset a portion of the energy cost associated with having a 100% outside air system, total energy wheels have been designed on all of the building air handlers.  When outside air temperatures permit all of the air handlers are able to be switched into running in an economizer mode.  Some of the energy required for the heating hot water systems is offset by the use of a 180 and 225 ton heat recovery chillers.  The office spaces of the building have ventilation setbacks during unoccupied hours while still maintaining building pressurization requirements.  Since dehumidification and temperature control are difficult in pool areas, a dedicated Dectron heat recovery unit was added to condition this space in Building A.

Interior lighting power density has been reduced by 30% by the use of improved lighting fixtures as well as occupancy sensors in the offices.  Low flow faucets, sinks, and shower heads are used throughout the facility in order to reduce the associated water usage as well as energy to heat the domestic hot water.  Using innovative design techniques as well as green construction practices help bring this building towards its LEED® Silver goal.

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 Justin Herzing. 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 April 26, 2010, by Justin Herzing and is hosted by the AE Department ©2009