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ABOUT JSA

Mechanical Renovations

Scope

$15-million renovation of a 35-year-old, four-story high school building and separate physical education wing.  The main building and PE wing of the 2,000-student school encompasses 227,000 sq. ft.  Mechanical design includes new high-efficiency, water-source heat pumps and de-coupled 100% outside air units with enthalpy-type heat exchangers.

Owner
Atlanta Public Schools

Mechanical Contractor
Shumate

Prime Consultant
Richard + Wittschiebe

Construction Cost
$15,000,000 (total)
$3,400,000 (mechanical)

Special Circumstances

• Building interior gutted to shell for new layout. HVAC system replaced with high-efficiency water-source heat pumps  (WSHPs). 

• Old mechanical rooms retrofitted with new tempered energy recovery units (TERVs) for a de-coupled 100% outside air system.  Water-cooled condensers tied into the tempered water loop.

• Each classroom and major space fitted with separate air outlets for supply of 100% conditioned outside air to assure prescribed ventilation rates. 

• Battery restrooms relocated off exterior walls to center of building to maximize daylight views for new classrooms.

• Unique offset installation scheme used for WSHP in corridors to overcome limited clearances above the ceiling.