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The new Adams Street Branch of the Boston Public Library, which opened last summer in the working-class municipality of Dorchester, is pleasing (if a bit of an odd duck), a work of inventive geometries that fits neatly into its low-rise context. The library’s quirky form was the product of a lengthy community-design process, one that forced the architects, Boston-based NADAAA, to rethink its original proposal for the building.

Adams Street Branch Library.

NADAAA enclosed the many-sided library in a terracotta rainscreen. Scalloped white panels appear on the entrance facade. Photo © John Horner

The stumbling block was a large oak tree at the north end of the site, which runs along Adams Street, Dorchester’s primary commercial strip. The Boston Public Library wanted it removed, to create a tabula rasa for the new building, and the architects followed that directive. The community, however, desired the tree to stay put, and made that clear in no uncertain terms. In turn, NADAAA founding principal, Nader Tehrani, embraced this “productive friction,” as he calls it, redrawing the plan with the tree as a focal point.

From above, the 13,900-square-foot, $12.3 million structure looks a bit like the Star Trek insignia, an asymmetric wedge with a chunk cut out at its northern end, where the tree commands a patio, and another excision on its southern flank for a small garden.

Adams Street Branch Library.

Unglazed earthcolored panels are used along the back. Photo © John Horner

With the entrance on Adams Street on the west, the single-story building is surrounded on the north and south sides by a residential neighborhood composed of traditional New England “triple-deckers”— late 19th-century three-story houses, built for families who lived on one floor and rented out the other two. NADAAA deftly responded to the library’s context by adhering to the scale of nearby houses while adapting traditional forms to a modern aesthetic. For example, according to Tehrani, the library’s front, defined by a long, low pediment, is inspired by the distinctive shape of McKim, Mead & White’s 1887 Low House, among other historical precedents. This elongated pediment, which floats over expanses of glass that respond to the street’s commercial character, is composed of a shiny white terra-cotta, divided at regular intervals by black steel support elements. The traditional shapes and white rainscreen cladding give a sense of formality to the entrance appropriate for a civic institution. A more demure, eggplant-colored terra-cotta appears on the sides and rear, facing residential streets.

While the building appears to be a relatively simple steel-frame shed, the complex design of the roof defies that impression. Much like the pleats of a fan, this “fifth facade,” in Tehrani’s words, unfolds from the pediment on the front side into a sequence of pitched forms toward the rear of the roof. Those folds respond to the gables of the neighboring triple-deckers, and conveniently direct drainage into a back alley. They also create a sort of “magic carpet,” as Tehrani describes the undulating roof, which can be seen from the upper stories of nearby buildings.

Inside, the library is divided into three “wings”—for children, adolescents, and adults—each of which extend away from the centrally located circulation desk and give librarians panoptic views: the plan is a result of the evolution of libraries as a building type, from spaces primarily for book borrowing and reading into community centers with a variety of functions. Interestingly, the new building has 15 percent more books than the old branch library it replaces.

“Having three wings allows ample autonomy so people aren’t annoying each other,” says Amin Tadj, the project manager for NADAAA. The two southern wings—the ones for children and adults, respectively—each look out through large windows to the garden separating them. Window walls are shielded by an overhanging eave that protects the interior from harsh light in the summer but still allows ample illumination. The teens section, along with a large community room, faces the northern patio and overlooks the much loved oak tree. The floors, mostly a light gray concrete slab, are durable, easily maintained, and hold heat during the winter months, thereby reducing the library’s energy burden.

Adams Street Branch Library.

The Community Room on the north of the library is flexible (1); it opens onto a patio with a large, old oak (2). An overhanging eave shields the window walls from the sun on the south (3). Photos © John Horner

Adams Street Branch Library.
Adams Street Branch Library.

The architects make use of the underside of the roof’s undulating geometry to cleverly express the separate programmatic functions. Hundreds of thin blonde-wood ribs, running east–west across the library’s interior, define the exposed ceiling. Alternating with structural glulam timber beams and acoustic ribs, they create a sense of rippling dynamism as they hover over and unite the different spaces. Book stacks primarily run north–south, perpendicular to the ceiling’s ribs, and are at shoulder height, allowing clear lines of sight.

Adams Street Branch Library.

The ceilings express the undulating geometry of the roof on the interior (4). Wood ribs run east–west, while book stacks, extending north–south, are low, to amplify light and views (5). Photos © John Horner

Adams Street Branch Library.

While the library may not be the most dramatic work in NADAAA’s portfolio, it brings aesthetic invention to a neighborhood where that is a rarity, and does so while respecting the traditions of the community.

Winter Park Library and Events Center.

Photo © John Horner

Video courtesy of NADAAA

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Adams Street Branch Library.

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Adams Street Branch Library.

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Adams Street Branch Library.

Click drawing to enlarge

Adams Street Branch Library.


1920 Washington Street #2
Boston, MA 02118

Personnel in Architect's Firm Who Should Receive Special Credit:
Design Principals: Nader Tehrani; Katherine Faulkner, AIA
Principal in Charge: Arthur Chang, AIA
Project Manager: Amin Tadj, AIA; Michael Schanbacher, AIA
Project Architect: Amin Tadj, AIA
Project Team: Nathan Vice, RA; Lisa LaCharité; Gretchen Neeley, AIA; Ali Sherif; Tim Wong, AIA; Alex Diaz; Dustin Brugmann; Ronnie Kataki; Hannah Wang

Architect of record:

Interior designer:

MEP + FP Engineers: Garcia, Galuska, DeSousa Consulting Engineers, Inc.
Structural: Souza True and Partners
Civil Engineer: BSC
Envelope Consultant: GRLA
Acoustical & AV Consultant: Acentech
Geotech Consultant: McPhail

Landscape: Ground
Lighting: Sladen Feinstein
Code: Kevin Hastings
Commissioning Agent: SMMA

General contractor:
Construction Manager: J&J Contractors
Interior Millwork: CW Keller & Associates

John Horner



Structural System:
Manufacturer of any structural components unique to this project: Glulam beams - Timber System

Exterior Cladding:
Metal panels: ES&F
Metal/glass Curtain Wall: EFCO system 5900
Rainscreen: Terracotta panels- Favemunc
Moisture barrier: Fire Resist 705FR-A Air & Vapor Barrier, Carlisle
Curtain wall: EFCO system 5900

Built-up roofing: Sarnafil Membrane Roofing

Metal frame: Aluminum, EFCO system 5900

Glass: Solarban 60 Solar Control Low E glass
Insulated-panel or plastic glazing: IGU

Entrances: EFCO D200 Doors
Metal doors: Curries
Wood doors: VT Architectural Wood Doors, EZY Frame
Special doors: AMBICO Acoustic doors

Locksets: EFCO
Closers: EFCO Concealed Overhead Closer
Exit devices: Sargent, ASSA ABLOY closer
Pulls: Offset Long Door Pull, Ives
Signage: Cassandra Signage

Interior Finishes:
Acoustical Ceilings: CERTAIN TEED Ecophon Focus A
Suspension grid: Cetain Teed 9/16 Grid
Cabinetwork and Custom Woodwork: – C.W. Keller and Associates
Paints and Stains: Sherwin Williams Promar 200
Wall Coverings: Unika Vaev Acoustical wall panel
Paneling: Plywood paneling, C.W. Keller and Associates
Solid surfacing: DUPONT CORIAN
Floor and wall tile: Nemo, Vogue
Resilient flooring: Nora Commercial Flooring

Office Furniture: Steelcase
Reception Furniture: CW. Keller and associates, Steelcase
Fixed Seating: CW. Keller Associates
Chairs: Arper, Knoll, Howe, Keilhauer, Vitra, Bernhardt
Tables: Viccarbe, Arper, HBF, Herman Miller, Naughtone, Erik Jorgensen, Steelcase, HAY
Other Furniture: Heartwork, Global Industry, Landscape form,

Downlights: Neo-Ray, Nulite, Stortek, ALW
Exterior: Portfolio, Ligman
Dimming system or other lighting controls: Touche

Enter Plumbing Product Here: Cerrotube Copper tube
Enter Plumbing Product Here: Pro Press, Wieland, Tyler cast iron

Energy management or building automation system: Zenergy Building Technologies, Daikin Intelligent Manager, KMC Controls
Other Unique Products That Contribute to Sustainability: Smaos integrated ambient and occupancy sensors, Touche Lighting Control, Belimo sensors, ACI Sensors, Onicon Meters, EBtron Airflow meter