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Multi-Family Residential

151 First Side

First Downtown Pittsburgh condo in 39 years clad in first of its kind architectural precast panel

  • 151 First Side multifamily structure, detail on carboncast panel on exterior
  • 151 First Side multifamily structure, detail on precast Architectural precast panel on exterior
  • 151 First Side multifamily structure, detail on precast Insulated Architectural Cladding on exterior close up
  • First-Side-Carboncast-Panel
  • First-Side-Architectural-Precast-Panel
  • First-Side-Insulated-Architectural-Cladding
  • Project 151 First Side
  • Location Pittsburgh, Pennsylvania
  • Type of Precast CarbonCast Insulated Architectural Cladding
  • Architect Indovina Associates Architects
  • Engineer The Kachele Group
  • Contractor Zambrano Construction
  • Precaster High Concrete Group LLC

Overview

  • Contemporary architectural precast panel permits large window areas
  • Thermally efficient sandwich panel did not require interior insulation
  • Rhythm and texture of facade supports residential renaissance in Downtown Pittsburgh
  • CarbonCast facade made under license from AltusGroup, Inc.

At 18 stories, 151 First Side was Downtown Pittsburgh’s first luxury condominium tower since 1968. Completed in October 2007, it was the catalyst for a wave of new downtown residential projects now underway in its vicinity. It was also the first commercial facade finished in thermally efficient CarbonCast Insulated Architectural Cladding.

The building is located at Fort Pitt Boulevard and Chancery Street in the First Side (or Mon Wharf) portion of Downtown along the Monongahela River. The $28.6M, 200 ft. tower replaced a surface parking lot. Residents will find the location in the historic neighborhood to be easily walkable to the Cultural District, city parks, restaurants, Market Square, Station Square and the central business district.

The tower offers stunning views of Downtown, the Monongahela River and Mt. Washington. Designed to be both contemporary and comfortable, its 82 condos range from 1000 to 3400 sq. ft.; units range in price from $290,000 to $1.8 million for penthouses.

“CarbonCast architectural concrete was presented as a possibility and we seized on it,” says designer and principal Robert A. Indovina. “From the durability, visual, practical and constructability standpoints, the architectural precast panel was the obvious material of choice.”

Cladding provides a thermally efficient skin

The CarbonCast Insulated Architectural Cladding panels contained two inches of rigid extruded polystyrene (XPS) foam that provided a composite R-value of 9. The architectural precast panel interiors were float finished, and drywall was applied on site. The panels did not need additional insulation on the inside; there was enough in the sandwich wall

“Sandwich precast panels place the dewpoint toward the outboard area of the wall. They are very efficient thermally,” says Indovina. “The architectural precast panel gets rid of concern around water getting in and out because there are fewer opportunities for water infiltration,” he notes. C-GRID shear trusses provided the low thermal conductivity connection between the inside and outside architectural concrete wythes surrounding the insulation in the sandwich wall design.

There are four levels of parking under the tower, two levels of which are above ground and concealed by the tower’s monolithic base. Inside, the garage is ventilated and also heated in the winter. Residents park in generous 9’ x 18’ front-in spaces that are easily accessed via a helical ramp configuration.

Precast helps to sell the view

While experienced with architectural concrete in precast offices, 151 First Side was Indovina’s first residential project. “The project was both an opportunity and a constraint in its repetitive nature,” says Indovina. “The location next to National Citibank building influenced our plan; the hexagonal corner carved away so we could create more views.”

“Precast allowed a large open glass area, and after all we were selling the view,” says Indovina. An all-glass facade would have been too cold. Pittsburgh is a traditional design city, and architectural concrete has the right residential feel.

The plan of the building steps back from the corner of the site, with a four-part elevation in a variety of heights intended to mirror the city’s skyline. “We wanted to use the architectural precast panel to create interest, definition and plastic variation in the front elevation, says Indovina. The designer created a combination of solidity and transparency that sets up an interesting rhythm in the front of building, then reinforced it with balconies.

The building’s warm beige color scheme in a light sandblast finish eases the transition from the white bank next door to the red buildings downriver. “We had considered brick for the facade but architectural concrete gave us more answers,” says Indovina. “The clean, smooth look was more desirable. The skin went up quickly.”

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