Original building The Broad is housed in a new building designed by architecture firm Diller Scofidio + Renfro in collaboration with
Gensler and structural engineering firm Leslie E. Robertson Associates. Its cost has been estimated at $140 million. With a location adjacent to
Frank Gehry's iconic
Walt Disney Concert Hall, the museum's design is intended to contrast with its bright metallic perforated exterior while respecting its architectural presence by having a porous, "honeycomblike" exterior. The design is based on a concept entitled "the veil and the vault". "The veil" is a porous envelope that wraps the whole building, filtering and transmitting daylight to the indoor space. This skin is composed of 2,500 rhomboidal panels of fiberglass-reinforced concrete supported by a 650-ton steel substructure. The "vault" is a concrete body which forms the core of the building, dedicated to storage, laboratories, curatorial spaces and offices. The three-story museum has of exhibition space on two floors, with of column-free gallery space The roof has 318 skylight monitors that admit diffused sunlight from the north. Lobby and exhibitions spaces are connected by a 105-foot escalator and a glass-enclosed elevator.
Plans for expansion In 2024, The Broad announced a $100-million, 55,000-square-foot addition behind the existing structure, which would increase gallery space by 70 percent. Designed by Diller Scofidio + Renfro, the addition is to take the form of a second building connecting to the original museum via a third-floor door and passageway leading to a courtyard with views of the sky. The expansion is expected to be completed by the
2028 Summer Olympics in Los Angeles.
Museum plaza In 2014, plans were published for a public plaza adjacent to The Broad, to be overseen and maintained by the museum as part of its agreement with the city. Designed by the museum's architects, Diller, Scofidio + Renfro, and landscape architect
Walter J. Hood, the
Hilda Solis Plaza plaza, It features a grove of 100-year-old
Barouni olive trees.
Construction The museum's unorthodox facade, which the architects refer to as the "veil", was unusually difficult to fabricate, leading to delays in construction. for $19.8 million in damages for allegedly failing to deliver the facade's components on schedule.
Structural engineer Nabih Youssef Associates Structural Engineers is the Structural Engineer of Record. The museum and parking garage is a 6-story, 110-feet tall structure occupying a city block and enclosing about 250,000 square feet. Typical floors are two-way concrete slabs spanning to concrete columns sitting on a mix of spread footings and belled caissons. The lateral system is a special reinforced concrete shear walls with long perimeter walls on the north & south sides of the building and short buttressing walls in the opposite direction. Special features include: • Veil – Support for the design/build fiber-reinforced concrete veil, a unique cladding structure spanning 70 feet from the roof to lobby level. • Vault – 5-feet thick mass concrete, post-tensioned and tapered slab cantilevering 45 feet off battered walls to provide a column-free glass lobby space alongside Grand Ave. • Roof – 190-feet long-span steel roof with a concrete lattice diaphragm providing a column-free top floor gallery across the entire building footprint. The interior (the Vault) is a large opaque volume that seems to hover in the middle of the space. This space holds the museum art and lending library, archive, lecture hall and offices as well as circulation. The exterior (the Veil) is composed of 313 different glass fiber reinforced concrete hexagonal blades of varying thickness and transparency, encasing a diagonal steel lattice that together forms an airy, cellular exoskeleton draping the interior space. This space acts as the ceiling over the gallery space, allowing natural light into the space. The Veil is not intended as a primary lateral system, more like a cladding. The remaining shear wall later system is augmented to account for the removal of the veil lateral element. A typical GFRC panel is about 8 x 5 x 1 feet and weighs approximately 1,100 lbs. At the top of the building, the veil wraps over a cantilevered roof that extends 40 feet over the Grand Avenue façade. The Veil is supported at three points: the connections on the Second Street and GTK, and the major 32 ton, 57-feet long touchdown beam on Grand Avenue. The Grand Avenue touchdown beam sits five feet below the sidewalk. The touchdown beam can rock about a central pivot point allowing the entire veil structure to slightly "see-saw" back and forth along its plane during a major earthquake. Each end of the beam is allowed to move up and down by ¾ inches. ==Collection==