building total area
total construction cost
Lake Washington School District
Allied Construction Associates
The new John Muir Elementary School replaced an existing facility located on the same site. The building was constructed on a narrow band oriented north and south. Shared group learning spaces fill the center of the school, surrounded by smaller periphery learning spaces. Under this project, a large gymnasium, a library, commons area, a music room, and a covered play area were also constructed. The main source of heating and cooling to the building comes from the ground source heat pumps which use the Earth as a heat source or heat sink (depending on the season). Aside from mechanical cooling, the building also takes advantage of natural ventilation to provide fresh, cool air when outside air temperatures are appropriate. The natural ventilation system is controlled by the BAS and incorporates multiple banks of automatically-actuated windows. A rooftop photovoltaic system is used to generate electricity which is fed into one of the building panels and used to power some of the lights throughout the building.
WJCx provided mechanical and electrical systems startup oversight and functional performance testing for this project. This project received funding under the Puget Sound Energy New Construction Commissioning Grant; WJCx was responsible for verifying specific aspects of the building construction and operation which aim to increase building efficiency. WJCx also oversaw Owner Training to ensure that O&M staff was well-equipped to manage the building systems.
Domestic Hot Water Heater Equipment and Systems, Piping Distribution Systems, Ground source heat exchangers and pumps, Water-to-Water Heat Pumps, Hot and Cold Water Storage Tanks, Ductwork Distribution Systems, Air Handling Unit equipment and systems, Duct Fan Coil Units and VAV boxes, Exhaust Fans, Heat Recovery Ventilators, 60 Hot Water Radiators, 3 Split System Air Conditioning Units, 2 Electric Heaters, Natural Ventilation System, Building Automation System, Interfaces to Fire Alarm System, Low Voltage Lighting Panel, Photocell Sensors, Occupancy Sensors, Time clock Operation, Photovoltaic System, Natural Gas Generator, Emergency Lighting Batteries and Inverter, and Building Electrical Blackout and Recovery Test.