About 600 Massachusetts Ave
General
600 Massachusetts Avenue is a 400,000 square foot trophy office building in downtown Washington, DC with a signature location and unique design incorporating two historic townhouses. Approximate floor plate sizes range from 28,000 to 43,000 square feet. The design features extensive landscaped terraces on many floors and the main roof. The design and construction of this building has obtained a LEED Platinum Certification.
Structure
Reinforced Concrete Frame, 100-lbs./sq.ft with 80-lbs./sq.ft. live load and 20 lbs./sq. ft. dead load capacity. Structure can be designed for 200/150-lbs./sq. ft. file loading at pre-selected areas in concourse level, or other areas as required.
Exterior
Natural stone, brick, precast concrete, metal panel, and energy efficient glass wall systems. Metal and glass sun screens are utilized on the south and west upper façade elevations.
Lobby
Lobby features stone flooring, wood and stone walls, metal and glass detailing.
Column Spacing
30' column spacing along building perimeter.
Roof
Ballasted IRMA roofing system with large planted areas on the accessible roof.
Slab to Slab Height
15’-4” on first floor, 12’-6” on the 2nd floor, 11'-4" on typical floors (3-9), and 12’-8” on the top floor.
Finished Ceiling Height
13’-0” on first floor, 9’-0” on office floors, 10’-0” on the 2nd floor.
Perimeter Walls/Columns
Perimeter walls and columns are insulated and dry walled ready to receive standard paint finishes (interior columns remain exposed concrete).
HVAC System
Mechanical equipment rooms and cooling towers utilizing direct digital controls on rooftop penthouse. There are Two high efficiency air handling units per floor serving all Tenant VAV zones and providing the equivalent capacity ratio of one ton for each 325 square feet of usable floor area. Floor units and all medium pressure trunk ducts are installed with the base building. VAV boxes, VAV inlet and discharge ducts, volume dampers, round, rigid and flex ducts and diffusers are installed under tenant work and are paid for out of the tenant improvement allowance.
Mechanical system permits two zones of operation per floor. Perimeter series fan powered VAV boxes with electric resistance heaters per 400 sq. ft. and interior VAV boxes per 1000 sq. ft. with thermostats are installed with the tenant work. VAV Boxes shall direct digital controls.
Building HVAC design criteria are:
Summer - 75 degrees F, dry bulb and 50% RH, up to 95 degrees dry bulb exterior temperature.
Winter - 70 degrees F. dry bulb, down to 10 degrees dry bulb exterior temperature.
Outside air for ventilation is provided at the rate of 20CFM per person and a density of 7 people per 1,000 square feet (consistent with current ASHRAE Guidelines). 25 percent spare capacity is provided for each riser.
A separate cooling tower with supplemental condenser water risers serving each floor has been installed with the base building and is available for use by the Tenants in the 24 hour operation of Tenant supplied air conditioning units at a nominal cost.
Electrical
A single electrical service entrance, with vault mounted transformers outside of building, will supplies three phase, four-wire, 480/277 volt service. Main service is approximately 4,000 amps. Transient Voltage Surge Suppression (TVSS) is provided at the electrical service entrance. Typical building electrical distribution system includes 480V plug-in bus risers with step down dry type, K-rated transformers for 120/208V for Tenant power distribution at each floor. 4.0 watts per square is available for Tenant receptacle and equipment use and 2.0 watts per square foot is provided for Tenant lighting. Power systems/capacities can be upgraded for Tenant flexibility. An additional 4.0 watts per square foot will be available at the bus-ducts on an as needed basis. Associated distribution will be provided by tenant at tenant’s expense.
Telecommunications
The building enjoys a telecommunications service entrance capable of receiving services from multiple telecommunication vendors. The base building contains a cellular DAS spine as well as a Public Safety DAS. Tenant telecommunications equipment must reside within the tenant’s leased premises.
Emergency Power
The building has a diesel driven emergency generator that maintains critical base Building equipment during normal service disruptions.
Life Safety
Fire standpipe and base building fire alarm system are installed per high-rise building code. The building's main sprinkler risers and loop system will be sized to support a sprinkler head density of 150 sq.ft. per head. Upturned sprinkler heads will be provided with the base building at a spacing of one head per 225 sq. ft. The addition and relocation of sprinkler heads and branch lines will be at Tenant's cost.
Wet Columns
6 wet columns per floor ready for connection of Tenant's added plumbing work.
Energy Management
Automated, (Reliable Controls Mach-Pro 2) direct digital Base building energy management system.
Elevators
Eight (8) passenger (MRL) high speed elevators, with 3,500 lbs. capacity and 1 freight high speed elevator, with 4,500 lbs. capacity. Two (2) parking shuttle elevators, with 3,500 lbs. capacity, serving the three parking levels. Additionally, the building has one (1) street access parking/concourse shuttle elevator servicing I Street.
Rest Rooms
Women’s and men’s restrooms will be fully finished on each floor with base building. Restroom finishes will include stone countertops, porcelain tile floors and base, and tile and painted walls. Ceilings will be gypsum wallboard painted.
Access System
24 hour on-site guard service is supported by video surveillance, electronic card reader controls on elevators and at perimeter entrances.
Fiber Optics
Fiber optics services via trunk lines are located adjacent to the property.
Parking
Three levels of access controlled underground parking with approximately 300 parking spaces.
Cyclists
Bicycle Racks are available for commuter cyclists on the Massachusetts Avenue parking garage entrance ramp landing and on Level P2 of the parking garage. A Bike Locker Room is available to monthly permit holders on the Concourse Level.
Window Coverings
The Tenant is responsible for furnishing and installing roller shades per the Base Building design and specification.
Distributed Antenna System
There is a cellular spine and a distributed antennae system (DAS) equipment serving the Building. Tenant work must not interfere or damage remotes, cabling, amplifiers and antennas, whether the same located in the Premises or in the base Building telephone closets on each floor of the Premises) and thereafter to maintain, repair and replace the same at Tenant’s cost.