landscape architecture & architecture pedestrian plaza and entrance ...
THOMAS P. O’NEILL JR. FEDERAL OFFICE BUILDING WASHINGTON, DC COMMERCIAL ARCHITECTURE GSA COMMISSIONED THE ARCHITECTS TO MODERNIZE THE EXISTING URBAN 550,000 SF BUILDING TO A CLASS A, LEED GOLD, BLAST PROTECTED FEDERAL OFFICE BUILDING. THE EXISTING 8 STORY STRUCTURE WAS A HIGHLY COMPARTMENTALIZED LABORATORY FACILITY. THE BUILDING HAS BEEN TRANSFORMED TO A NATURALLY LIT AND OPEN PLANNED OFFICE SPACE VIA A FEW SIMPLE YET PRECISE ARCHITECTURAL DECISIONS WHICH ALLOWED OVER 75% OF THE EXISTING STRUCTURE TO REMAIN INTACT: • TWO ATRIA WERE CUT INTO THE EXISTING FLOOR PLATE TO CREATE A 6 STORY ENTRY ATRIUM AND A 7 STORY CENTRAL ATRIUM • GLASS CURTAIN WALLS REPLACED SOLID LIMESTONE AT THE EAST AND WEST FACADES. • THE WINDOW BAYS AT THE NORTH-SOUTH FACADES WERE OPENED AND PROJECTED AT THE FIRST AND SECOND FLOORS TO DEFINE A BASE FOR THE MASS OF THE STRUCTURE. • A SECURITY ENTRANCE PAVILION WAS ADDED TO THE NORTH SIDE OF THE BUILDING TO RELIEVE THE ORTHOGONAL MASS OF THE STRUCTURE. • LEED PLATINUM WAS AWARDED FEB. 2014
LANDSCAPE ARCHITECTURE & ARCHITECTURE PEDESTRIAN PLAZA AND ENTRANCE PAVILION
EXISTING BUILDING UNDER CONSTRUCTION, 1962
C & 3RD STREETS MASTERPLAN
US CAPITOL BUILDING
BOTANICAL GARDEN
VICINITY PLAN
AMERICAN VETERANS DISABLED FOR LIFE MEMORIAL
BEFORE – FRONT ENTRY PARKING LOT
AFTER – FRONT ENTRY & PLAZA
VIEW FROM C STREET SITE PLAN A PEDESTRIAN PLAZA WITH LANDSCAPED BERMS HAS REPLACED SURFACE PARKING, AFFORDING ENVIRONMENTAL BENEFIT AS WELL AS PERIMETER SECURITY PROTECTION. RAISED BEDS DIRECT PEDESTRIANS TOWARD THE ENTRANCE AND ARE SELECTIVELY INTERSECTED WITH SMALLER ‘SHORTCUT’ PATHS TO THE PERIMETER SIDEWALK CREATING SHADED SEATING AREAS AMONG THE TREES AND LANDSCAPE FOR VARIED CIRCULATION OPTIONS. VIEW FROM C & 3RD STREET
EXISTING LIMESTONE FAÇADE REMOVED TO PROVIDE NEW OPENINGS DAYLIGHT AND VIEWS
MODERNIZATION: NORTHWEST VIEW
“BEFORE” CONDITION: NORTHWEST VIEW
EXISTING PENTHOUSE 4” LIMESTONE CLADDING CLEANED AND REPOINTED
SMALL INSET WINDOWS WITH METAL PANEL INFILL REPLACED WITH FULL HEIGHT CURTAIN WALL EXISTING 4” LIMESTONE CLADDING CLEANED AND REPOINTED 1ST AND 2ND FLOOR WINDOW BAYS PROJECTED TO CREATE A BASE COURSE FOR THE BUILDING MASS
“BEFORE” CONDITION
MODERNIZATION
COMPARISON OF TYPICAL BAY AT NORTH AND SOUTH FACADE
DETAIL PHOTO OF PROJECTED BAY AT NORTH FAÇADE WITH US CAPITOL BUILDING REFLECTED IN GLAZING
DAYLIGHT: BEFORE
DAYLIGHT: AFTER
ADDITIONAL DAYLIGHTING TWO ATRIUMS TOPPED WITH SKYLIGHTS WERE CUT INTO THE EXISTING STRUCTURE TO BRING DAYLIGHT DOWN THROUGH SEVEN FLOORS EXISTING SMALL PUNCHED WINDOWS ON NORTH AND SOUTH FACADES WERE ENLARGED VERTICALLY AND HORIZONTALLY LARGE PORTIONS OF EAST AND WEST STONE FACADES WERE REPLACED WITH FLOOR TO CEILING CURTAINWALL WINDOW AT BOTTOM TWO FLOORS WERE PROJECT OUT TO CREATE THREE SIDED WINDOW BAYS
WATER EFFICIENCY • 50% LANDSCAPE USE REDUCTION • 30% BUILDING USE REDUCTION
INDOOR AIR QUALITY • ONLY LOW EMITTING MATLS USED • IAQ CONSTRUCTION PLAN USED • CARBON DIOXIDE REDUCED VEGETATIVE ROOF
DEMO FOR NEW ATRIUM
HIGH EFFICIENCY HVAC ENERGY & ATMOSPHERE • 28% BETTER PERFORMANCE THAN BASELINE • 35% GREEN SOURCE ENERGY • BAS TO MONITOR & MAINTAIN
MATERIAL & RESOURCES • 95% BUILDING SUBSTRATE REUSED • 75% WASTE DIVERTED FROM DISPOSAL • 20% RECYCLED/REGIONAL MATLS USED
INNOVATIVE & DESIGN PROCESS • OPTIMIZED DAYLIGHT INTO BUILDING • INNOVATIVE STORMWATER MANAGEMENT • GREEN CLEANING
SUSTAINABLE SITE • BROWNFIELD REDEVELOPMENT • METRO & BUS ACCESSIBLE • ELECTRIC & ALT FUEL PROVISIONED • VEGETATIVE & LOW ALBEDO ROOF • LANDSCAPED PLAZA REPLACED SURFACE PARKING TARGETING LEED PLATINUM CERTIFICATION
SUSTAINABLE BUILDING FEATURES
PHOTOGRAPH OF SECURITY PAVILION. A GRANITE PORTAL RECEIVES THE GLASS WATERFALL AND LOWERS THE CEILING OVER THE SCREENING EQUIPMENT TO CONSTRICT AND CONTROL ENTRY.
SECTION AT ENTRY AND CENTRAL ATRIUM ILLUSTRATING IMPACT OF ADDITIONAL DAYLIGHTING THESE FEATURES PROVIDE BY BREAKING UP THE MASSIVE FLOOR PLATES
A WATERFALL OF GLASS TIES THE SECURITY PAVILION TO THE BUILDING MASS WITH A 6 STORY ENTRANCE ATRIUM FEATURING A SALVAGED LIMESTONE WALL
EXISTING LOBBY ENTRANCE VERTICAL CIRCULTATION
ATRIUM ‐ OPEN TO BELOW
CORE ELEMENTS
CLOSED ZONES (EX. LABS, OFFICES, COPY, MEETING)
LOBBY
CONFERENCE ROOMS
NEW CORRIDOR
EXISTING LABORATORY CONDITION
NEW WITH FLEXIBLE SUITE FITOUT FIRST FLOOR PLAN
VERTICAL CIRCULTATION
ATRIUM ‐ OPEN TO BELOW
CORE ELEMENTS
CLOSED ZONES (EX. LABS, OFFICES, COPY, MEETING)
LOBBY
CONFERENCE ROOMS
EXISTING LABORATORY CONDITION
NEW WITH FLEXIBLE SUITE FITOUT TYPICAL FLOOR PLAN
MONUMENTAL STAIR AT CENTRAL ATRIUM
MONUMENTAL STAIR AT CENTRAL ATRIUM
CENTRAL ATRIUM & MONUMENTAL STAIR
LANDSCAPE ARCHITECTURE & ARCHITECTURE PEDESTRIAN PLAZA AND ENTRANCE PAVILION
EXISTING BUILDING UNDER CONSTRUCTION, 1962
C & 3RD STREETS MASTERPLAN
US CAPITOL BUILDING
BOTANICAL GARDEN
VICINITY PLAN
AMERICAN VETERANS DISABLED FOR LIFE MEMORIAL
BEFORE – FRONT ENTRY PARKING LOT
AFTER – FRONT ENTRY & PLAZA
VIEW FROM C STREET SITE PLAN A PEDESTRIAN PLAZA WITH LANDSCAPED BERMS HAS REPLACED SURFACE PARKING, AFFORDING ENVIRONMENTAL BENEFIT AS WELL AS PERIMETER SECURITY PROTECTION. RAISED BEDS DIRECT PEDESTRIANS TOWARD THE ENTRANCE AND ARE SELECTIVELY INTERSECTED WITH SMALLER ‘SHORTCUT’ PATHS TO THE PERIMETER SIDEWALK CREATING SHADED SEATING AREAS AMONG THE TREES AND LANDSCAPE FOR VARIED CIRCULATION OPTIONS. VIEW FROM C & 3RD STREET
EXISTING LIMESTONE FAÇADE REMOVED TO PROVIDE NEW OPENINGS DAYLIGHT AND VIEWS
MODERNIZATION: NORTHWEST VIEW
“BEFORE” CONDITION: NORTHWEST VIEW
EXISTING PENTHOUSE 4” LIMESTONE CLADDING CLEANED AND REPOINTED
SMALL INSET WINDOWS WITH METAL PANEL INFILL REPLACED WITH FULL HEIGHT CURTAIN WALL EXISTING 4” LIMESTONE CLADDING CLEANED AND REPOINTED 1ST AND 2ND FLOOR WINDOW BAYS PROJECTED TO CREATE A BASE COURSE FOR THE BUILDING MASS
“BEFORE” CONDITION
MODERNIZATION
COMPARISON OF TYPICAL BAY AT NORTH AND SOUTH FACADE
DETAIL PHOTO OF PROJECTED BAY AT NORTH FAÇADE WITH US CAPITOL BUILDING REFLECTED IN GLAZING
DAYLIGHT: BEFORE
DAYLIGHT: AFTER
ADDITIONAL DAYLIGHTING TWO ATRIUMS TOPPED WITH SKYLIGHTS WERE CUT INTO THE EXISTING STRUCTURE TO BRING DAYLIGHT DOWN THROUGH SEVEN FLOORS EXISTING SMALL PUNCHED WINDOWS ON NORTH AND SOUTH FACADES WERE ENLARGED VERTICALLY AND HORIZONTALLY LARGE PORTIONS OF EAST AND WEST STONE FACADES WERE REPLACED WITH FLOOR TO CEILING CURTAINWALL WINDOW AT BOTTOM TWO FLOORS WERE PROJECT OUT TO CREATE THREE SIDED WINDOW BAYS
WATER EFFICIENCY • 50% LANDSCAPE USE REDUCTION • 30% BUILDING USE REDUCTION
INDOOR AIR QUALITY • ONLY LOW EMITTING MATLS USED • IAQ CONSTRUCTION PLAN USED • CARBON DIOXIDE REDUCED VEGETATIVE ROOF
DEMO FOR NEW ATRIUM
HIGH EFFICIENCY HVAC ENERGY & ATMOSPHERE • 28% BETTER PERFORMANCE THAN BASELINE • 35% GREEN SOURCE ENERGY • BAS TO MONITOR & MAINTAIN
MATERIAL & RESOURCES • 95% BUILDING SUBSTRATE REUSED • 75% WASTE DIVERTED FROM DISPOSAL • 20% RECYCLED/REGIONAL MATLS USED
INNOVATIVE & DESIGN PROCESS • OPTIMIZED DAYLIGHT INTO BUILDING • INNOVATIVE STORMWATER MANAGEMENT • GREEN CLEANING
SUSTAINABLE SITE • BROWNFIELD REDEVELOPMENT • METRO & BUS ACCESSIBLE • ELECTRIC & ALT FUEL PROVISIONED • VEGETATIVE & LOW ALBEDO ROOF • LANDSCAPED PLAZA REPLACED SURFACE PARKING TARGETING LEED PLATINUM CERTIFICATION
SUSTAINABLE BUILDING FEATURES
PHOTOGRAPH OF SECURITY PAVILION. A GRANITE PORTAL RECEIVES THE GLASS WATERFALL AND LOWERS THE CEILING OVER THE SCREENING EQUIPMENT TO CONSTRICT AND CONTROL ENTRY.
SECTION AT ENTRY AND CENTRAL ATRIUM ILLUSTRATING IMPACT OF ADDITIONAL DAYLIGHTING THESE FEATURES PROVIDE BY BREAKING UP THE MASSIVE FLOOR PLATES
A WATERFALL OF GLASS TIES THE SECURITY PAVILION TO THE BUILDING MASS WITH A 6 STORY ENTRANCE ATRIUM FEATURING A SALVAGED LIMESTONE WALL
EXISTING LOBBY ENTRANCE VERTICAL CIRCULTATION
ATRIUM ‐ OPEN TO BELOW
CORE ELEMENTS
CLOSED ZONES (EX. LABS, OFFICES, COPY, MEETING)
LOBBY
CONFERENCE ROOMS
NEW CORRIDOR
EXISTING LABORATORY CONDITION
NEW WITH FLEXIBLE SUITE FITOUT FIRST FLOOR PLAN
VERTICAL CIRCULTATION
ATRIUM ‐ OPEN TO BELOW
CORE ELEMENTS
CLOSED ZONES (EX. LABS, OFFICES, COPY, MEETING)
LOBBY
CONFERENCE ROOMS
EXISTING LABORATORY CONDITION
NEW WITH FLEXIBLE SUITE FITOUT TYPICAL FLOOR PLAN
MONUMENTAL STAIR AT CENTRAL ATRIUM
MONUMENTAL STAIR AT CENTRAL ATRIUM
CENTRAL ATRIUM & MONUMENTAL STAIR
