Image 1. View from Yorktown Blvd.


Image 2. View from Plaza level






















































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 Benjamin Mahoney. 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.

Note: All images/renderings were supplied by Davis, Carter, Scott Ltd.


Building Statistics | Part I

Building Name |
Marymount University 26th St. Project
Location |
Building Occupant |
Marymount University students & personnel
Occupancy Type |
Residential, Business, Storage/Garage & Assembly
Size |
129,000-SF Academic/Residential + 138,000-SF Parking Garage
Number of Stories |
(4) below grade parking, (3) above grade + Penthouse
Construction Dates |
April 2009 - September 2010
Building Cost |
$42 Million (Guaranteed Maximum Price)
Delivery Method |


Project Team
Owner |
Owner's Representative/CM |
General Contractor |
Architect |
Structural Engineer |
MEP Engineer |
Civil Engineer |
Landscape Architect |


Design & Functional Components

The 26th Street Project is situated on 1.45 acres and will provide Marymount University with additional dormitory units, a new academic facility, and underground parking.  The project site is located at the corner of 26th Street, Yorktown Boulevard, and Old Dominion Drive in Arlington, VA.           

The residential building will add 62 units, situated in four and five unit suite configurations.  The academic building will provide state of the art scientific laboratory space, lecture halls, and office space for Marymount University personnel.   As shown in Figure 1. the academic and residential buildings will be constructed on top of the four levels of underground parking and separated by outdoor gathering space.

Figure 1. View from Old Dominion Dr. (L-Dormitory; R-Academic building)
Applicable Codes
International Building Code (IBC)
Virginia Uniform Statewide Building Code (VUSBC)
International Residential Code (IECC)


International Mechanical Code (IMC) 2003
National Electrical Code (NEC)
International Plumbing Code (IPC)
International Fire Code (IFC)
International Fuel Gas Code (IFGC)

The zoning per Arlington County Virginia for Marymount University is “S-3A”, Special Districts. “The purpose of the "S-3A" Special District is to encourage the retention of certain properties in a relatively undeveloped state. Land so designated may include publicly or privately owned properties which have distinct and unique site advantages or other features so as to make them desirable to retain as active or passive recreation or for a scenic vista. Also stream valley floodplains could be included in this district.”

Historical Requirements
Not Applicable
Building Facade

The building facade is comprised of 3 major building materials, precast architectural concrete, stone cladding, and aluminum framed windows.   A majority of the exterior facade consists of precast panels and stone cladding. The individual sections of precast and stone panels will be fastened to the concrete structure utilizing embeds and anchors.  Aluminum framed operable and non-operable Low-E Clear Vision Glass windows make up the rest of the building façade. 

Figure 2. View from 26th St. & Yorktown Blvd.
Roofing System

The horizontal surface of the roof utilizes a fully adhered thermoplastic polyolefin (TPO) membrane that is white in color.  With a white roof, the roof will reflect, rather than absorb much of the energy from the sun.  This will keep the building at a lower temperature and reduce the overall load on the HVAC system.  Located beneath the TPO membrane will be molded-polystyrene insulation boards.

Metal roof panels will also be used on the exterior face of the building as seen in Figure 2 aboveThe metal roof panels not only serve to hide much of the mechanical equipment located on the roof, but the panels also fit into the theme of the Marymount University campus.  Multiple buildings found on campus have similar metal panel roofs that provide the same aesthetics. 


Marymount University has opted to incorporate sustainable features into the 26th St Project.  The project is striving to achieve a LEED® Certified rating and was designed according to LEED® NCv2.2.  Some of the major the major sustainable features of this project are listed below.

  • On-site bicycle racks for residents and university employees
  • Preferred parking for carpools, vanpools, and Zip Cars
  • All plumbing fixtures will be “Low-Flow” and consume 21% less water
  • Building envelope, lighting, power, and HVAC systems have been designed according to ASHREA 90.1-2004
  • CFC-based refrigerants will not be utilized in the HVAC systems
  • All building occupants will have access to on-site storage receptacles for recyclable materials
  • At least 10% of products used during construction will contain recycled material
  • At least 10% of the materials used during construction will be regionally located (extracted, processed & manufactured)
  • All paints, adhesives, sealants, and carpets  have been specified to be low-emitting