The Army National Guard Readiness Center Addition


Building Statistics

Building Name:

Army National Guard  Readiness Center Addition


Location And Site:

111 S. Mason Drive, Arlington Hall Station, Arlington VA


Building Occupant Name:

The Army National Guard


Building Function:

Joint Headquarters Administrative Building



251,444 SF office building


Number of Stories Above Grade/ Total Levels:

For the Office building, there are 5 stories above grade and three below totaling to 8 stories.


Project Team:

Owner Army: National Guard

General Contractor: Tompkins Builders Inc.

Architect: CH2M

Engineer: AECOM


Dates of Construction:

Start Date: 12/2008

Anticipated Completion Date: 01/2011


Cost Information:

Contract Value– 100,000,000


Project Delivery Method:

Design-Build with Lump Sum





Design and Functional Components:

This eight story addition will serve as a Joint Headquarters Administrative building for an existing building site.  Although it functions as a standalone building, there is a one story bridge connecting this building to the already existing one.  The new addition will have 3 levels below grade consisting of open office space, an auditorium, fitness facilities, locker rooms, and a telecommunication center.  Above grade, there is a 5 story triangular tower of smaller footprint then the three levels below that it stands on.  General office space makes up the majority of the tower, along with conference rooms and an auditorium.  Where the below grade levels transition to the tower, there is an outdoor plaza consisting of seating and walkways and doubles as a green roof.  A unique architectural feature of the building is the steel tricorn that sits atop the southern point of the tower.  It is an aesthetic feature meant to give the appearance of an eyebrow.


Major National Codes:

· International Building Code 2006 (IBC)

· Unified Facilities Criteria

· National Fire Protection Agency Codes (NFPA)

· PAM 200-1, 415-15, 420-7

· Leed-NC v2.2



S3 –A


Historical Requirements:

Not Applicable


Building Enclosure:

The façade of the Army National guard Readiness Center Addition is made of an aluminum curtain wall system, metal panels, and architectural precast panels.  The aluminum curtain wall system will consist of a mixture of vision and spandrel glass panels, however, glass types have not been finalized as of this moment.


There are two separate roofing systems, one for the tower and one for the below grade levels.  The roofing system for the tower consists of a vapor barrier on top of a structural concrete slab, sloped rigid insulation,  singe-ply roofing membrane, and topped by roof pavers.  For the roofing system at the plaza level, there is a structural concrete slab with a softer concrete topping sloped for drainage, roofing membrane with fabric reinforcement, root barrier, insulation, a drainage water retention element, filter fabric, and a planting element.  Note that this roofing system is to function as a green roof.


Sustainability Features:

The outdoor plaza level also functions as a green roof, which serves as the main sustainable aspect of the building.  Many of the materials have yet to be finalized a this moment, however, many shall be LEED rated and the building expects to achieve a LEED silver rating.


Primary Systems




Construction on the Army National Guard Readiness Center Addition began on December 1, 2008 and is expected to be completed by March of 2011.  The project delivery method is Design-Bid-Build with the general contractor holding lump sum contracts with subcontractors.  Tompkins Builders Inc. is the general contractor for the project, which is a subsidiary of Turner Construction Company.  In addition to the office building, Tompkins Builders Inc. will be in the process of simultaneously constructing a new parking garage on site.  Because of extensive amount of construction activity happening on site, it is imperative that efficient coordination between Tomkins Builders and its subcontractors is achieved.  Logistics planning and Building Information Modeling (BIM) will both be utilized in order to ensure completion of the project on time and within budget.




Dominion Power supplies to the Army National Guard Readiness Center through an onsite utility yard.  The power is delivered at 35.4kV and then stepped down by switchgear which delivers power to the building through two medium voltage feeders at 15kV each.  Two substations within the second basement level of the building step the power further down to a 480/277, 3 Ph, 4 wire system.  Lighting systems are fed by 208/120, 3 phase, 4 wire panel boards.    


Emergency power is supplied to the building through two 1500 kW diesel powered generators located on the penthouse level.  A large conduit riser goes down seven stories through the building and cuts east-west across the second story to connect to the unit substations.  Emergency power is routed to the building through three automatic transfer switches.  Uninterrupted Power Supply (UPS) systems are also located in the basement levels for critical systems.


The lighting in the building will consist o f fluorescent luminaires at 277V and Incandescent luminaires at 120V with HID lighting for the exterior plaza.  Programmable lighting relay systems will be used to control the lighting in the open office areas while dimming systems will be utilized in some of the private offices and special purpose areas where flexible lighting schemes are desired.




Each floor house’s air-handling units (AHUs) with individual variable air volume (VAV) terminal units and fan coil units (FCU) in a mechanical room.  These AHUs range from 1500 cfm to 2450 cfm and are supplied by 100% outside air.  A hydronic HVAC system consisting of a four-pipe heating and chilled water system distributes water to the AHUs and VAVs on each floor and also to the energy recovery units in the mechanical penthouse.  A Building Automation System (BAS) is used to control the individual units, monitor the temperatures in each space, and controlling the FCUs throughout the building.  There are also backup generators and energy recovery units located in the mechanical penthouse.




The structure of the Army National Guard Readiness Center is a combination of cast-in-place concrete and structural steel.  The majority of the structure is cast-in-place concrete with only the main stairwell tower number 2 on the southern side made of structural steel.  Typical bay sizes range from 20’ by 25’ to 20’ by 30’.  The typical column size is 1’-10” by 1’-10” with (8) #8 longitudinal reinforcing bars and #3 ties at 12’ on center.  The floor system is a 2 way flat plate system.  Structural steel at the stair tower is HSS type beams and composite HSS columns.  The beams range from HSS12x8x0.625 to HSS 14x4x0.625.  The columns are either HSS 8.625x0.322 or HSS 11.25x0.500


The foundation system consists of a 6” crushed stone base, 2” concrete mud mat, 3’-7” mat foundation, 2’-9” aggregate, and a 12” slab-on –grade.  Structural s



Support Systems


Fire Protection:


There are two existing hydrants that provide 1520 gallon per minute flow rate to the sprinkler system.  The building is designed for both light hazard areas, requiring 0.10 GPM over 3,000 ft2, and ordinary hazard areas which require 0.20 over 3,000 ft2


Within the main server room is a FM-200 system.  FM-200 is a colorless, non-toxic gas that when released into the room extinguishes a fire within ten seconds of detection.  A major advantage to this system as opposed to sprinkler systems is the minimal damage that the gas will do to the electrical equipment.




There is an elevator core in each of the two major sections of the building, each one containing three elevators.  Elevators 1-3, located in core one, will be passenger elevators  rated at 3500 pounds.  Elevators 4-6, located in core 2, are gearless service elevators rated at 4500 pounds.  All elevators run though each story of the building.


Three stairwells exist throughout the building, two of which extend from the lowest level 3P to level 5T.  These two stairwells are located in the northwest corner and center of the building.  The third stairwell is located in the southwest corner and only goes through the below grade levels (3P-1P).  The centrally located stairwell is considered the main stairwell.  It is completely enclosed by glass which allows for a view over the outdoor plaza.




All of the major communication systems equipment are located on the 3rd basement level in various telecommunication and server rooms.  The main servers for the building are located in room P346.  However, there are at least IT/telecommunication rooms located on each floor.  Each one of these rooms has 100% access flooring as well as in the conference rooms, and offices.  Telecommunication systems are distributed through the building 12” cable trays and 24” width by 4” depth under-floor cable basket tray.  Most of the workstations access the telecommunication systems through either ceiling or floor mounted box telecommunication outlets.  Each box outlet either contains 2 or 4 voice and data outlets.






Image courtesy of The Army National Guard and Tompkins Builders Inc.





Building Statistics

Tech Assignments




Final Report


Senior Thesis e-Studio

Final checklist completel


Final Report Posted


Draft Outline and Slides


Revised Proposal V. 2


Discussion Board Question


First Design Posted


Revised Proposal Posted


Thesis Proposal Posted


Technical Report 3


Technical Report 2


Building Statistics 2


Abstract Posted


Technical Report 1


Lighting Proposal


Full Menu Functionality


Biographical Sketch


CPEP Home Page Draft


Building Statistics


Sent Thank You Notes


Owner Permission


Obtained Documentation


Project Site Visit