1. Gig Harbor High School
HVAC Improvements, Gig Harbor, Washington
Owner
Peninsula School
District
Building Type
Grades 9,10,11,12
Building Areas
80,000 Sq ft
Construction
Costs
$4,400,000
Mechanical
Systems
Gas Boilers
350 ton Chiller
Hydronic Piping
VAV boxes
Electrical Systems
Power
Fire Alarm
Main Distribution
Completion Date
August 2005
Front Entrance
Project Description
The Gig Harbor High School was originally
opened in 1980 with major additions in 1988 and
1992. To address an aging HVAC system and
concerns about indoor air quality, a complete
replacement of the existing hydronic VAV system
was accomplished over the summer of 2005.
Boiler room equipment was completely replaced
with three new condensing boilers, pumps and
piping along with a 350 ton chiller. Two new
45,000 cfm rooftop units replaced existing units to
serve classroom VAV systems. Heat recovery
units were replaced at the swimming pool and
locker rooms, new rooftop units were also
provided at the gymnasiums, theater and misc
spaces.
Hot water and chilled water pipes were replaced
throughout located above ceiling tiles. Much of
the ductwork was replaced, any existing ductwork
that was reused was cleaned, sealed and
resupported to meet current code requirements.
The shop building was also upgraded and an
existing auto shop was converted to a weight
room.
In addition to the HVAC work, supporting
documents were prepared including work done to
ceiling systems, carpet, flooring and structural
upgrades to handle added weight of equipment.
Minor modification to the sprinkler system were
done to accommodate new work.
Electrical systems included providing power to
new mechanical equipment and replacing the
entire fire alarm system. The main distribution
panels and conduits were replaced.
For the most part, all work was completed over
the school’s summer break. In order to meet the
summer construction schedule, the project was
bid early enough in the spring so that the day
school let out in June, the equipment was already
ordered with VAV boxes on site. To expedite
piping installation, above ceiling work was started
earlier during after school hours and the boiler
room was fabricated first off site and then brought
over and reinstalled.
New Pool Heat Recovery
Boiler Room Piping
Units craned on to roof
Units screened on
roof
New gym ductwork