A collaborative effort dependent on shared goals of the owner, designer and contractor
BY CARRIE BRADLEY
create air currents from the floor below.
High-bay lighting is controlled by zoned photometric
sensors, automatically dimming or turning fixtures off
when adequate light levels are provided naturally. Room
reflectance also plays an important role in the overall
efficiency of lighting systems. High reflectance (white
or light colors) ensures lighting is directed to the work
zone, instead of being absorbed by walls and ceilings.
Reflective floors help reduce the amount of light needed,
while at the same time providing illumination under the
aircraft’s giant shadow.
Often designed as large and sprawling boxes, hangar
facilities now are shaped and sized within close tolerances
of the aircraft and are finely tuned to the operation taking
place. Smaller buildings and support systems translate to
direct “first-cost” savings and reduced operating costs of
mechanical, electrical and fire protection systems.
Hangar with on-site renewable energy.
Even when designed to the smallest footprint possible,
hangar roofs are still large expanses. A project under construction and on track to achieve LEED Platinum, the highest level of certification through USGBC’s rating system,
capitalized on this fact. With a sloped south exposure, the
roof was designed at the optimum angle to maximize solar
collection. The photovoltaic array clips directly to the standing seam metal roof, and is expected to convert enough electricity to operate the ventilation and lighting systems.
The general definition of a net zero energy building is a
facility that, over the course of a year, produces as much
energy as it consumes. The first and most important
step is implementing an aggressive energy conservation
program using free energy to reduce loads, followed by
efficient systems and technologies to reduce demand. The
remaining energy needs are provided through renewable
sources, often solar or wind.