355 11th Street - Matarozzi/Pelsinger Building

355 11th Street - Matarozzi/Pelsinger Building By Eric Bobrow

GENERAL INFORMATIONLocation355 11th Street, San Francisco, CA

Building TypeRestaurant, Industrial, & Commercial office

Building UseThe contractors headquarters occupies the second floor, the third floor is used by an architecture firm, and the first floor and exterior courtyard is used as a restaurant and bar. Type Of ProjectAdaptive ReuseAn in-kind or similar to what was there before renovation of the exterior walls and a significant upgrade of the buildings original timber frame structure. ArchitectsJoshua Aidlin, Aidlin Darling Design

DatesAwarded: LEED GoldAIA San Francisco Chapter - Energy and Sustainability in 2009AIA/COTE Top Ten Green Projects in 2010AIA California Council in 2009Zerofootprint Re-Skinning Award in 2010

Ecological Materials and Resources UsedBamboo flooring used for all non-concrete floor surfaces

New exterior metal skin perforated with fields of small holes that allow light and air to pass through new operable windows hidden behind.

Recycled use of 80% of the original building.

Permeable surfaces on over 85% of the available non-building site area, allowing storm water to drain directly to the water table rather than entering city sewers.

High-efficiency condensing boiler to heat floors

Energy EfficiencyUnshaded roof areas have a 30kW photovoltaic array, providing 37,751-kWh of the buildings annual electricity

In-floor radiant heat is supplied by a high-efficiency condensing boiler rather than using gasoline or oil burners.

Daylight sensors automatically adjust the output of the main light fixtures to take full advantage of available sunlight

All adhesives, sealants, paints, coatings and carpeting used in the project were low-VOC per LEED-NC EQ Credits 4.1,4.2, and 4.3

Site EcologySite EcologyOver 20% of the site area, has been planted with drought-resistant plants that will require no irrigation after a 1-year establishment period.The non-irrigated living roof filters storm water, insulates the building, and decreases the urban heat-island effect.The project has applied permeable surfaces on over 85% of the available non-building site area, which allows storm water to drain directly to the water table part of the earth rather than entering the city sewers.

Site EcologyOver 90% of all site surfaces are either planted or high-albedo, serving to lower surface temperaturesMinimum of six parking spaces, four of which have been reserved for alternative-fuel vehicles Over 80% of the existing wall, floor, and roof areas of the original building were retained per LEED-NC MR Credit 1.1 Site Ecology

Water ResourcesPervious surfacesincluding landscaping, pervious pavers and drivable grass paversaccount for over 85% of the non-building site area.

Roof area not occupied by photovoltaics has been planted (xeriscape) and drains to the pervious site area. Precipitation managed on site is 57%

No gray water systems usedNative Plants have been placed throughout the site, resulting in a landscape that will not require supplemental irrigation

Cost ImplicationsCost ImplicationsSecure bicycle parking and a shower room and locker area are available for the use of all building occupants, helping to make cycling to work a viable optionespecially for those with longer commutes Located in the heart of SoMa district so public transportation is used oftenA custom conference room table and coffee table were designed for the primary office tenant and were re-sawn beams removed from the original building to make way for new exit stairs and elevator.

The building has been designed to be 100% naturally ventilated and passively cooled

On the east and west facades, the new metal skin is perforated with fields of small holes that allow light and air to pass through new operable windows hidden beyond.

The perforated outer skin provides light while mitigating solar heat gain and enabling cross-ventilation of the interior. This rudimentary double-skin faade becomes a screen for sunlight and air, allowing the stoic, industrial character of the original building to be maintained without the visual introduction of new fenestration.

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