Airport Business - 28

COVER STORY
and pavement was placed, the finishing
touches included installation of new LED
fixtures and signs, following by a new
coat of marking."
Aoude said that one of the unique
factors of each project was temporarily
shortening the runway and shifting the
Runway Safety Area (RSA) to allow for
construction that would have conflicted
with the safe runway operations.
"As part of this, we had to consider
the optimal weather times of the year for
this shortening to occur to limit impacts
to tenant operations and ultimately best
accommodate aircraft performance. To
accomplish this, we deliberately phased
the runway shortening to be within
the spring months to capture the best
visibility and temperature conditions at
VNY," said Aoude.
During construction of each taxiway
project, the runway was shortened and
configuration was changed several times,
involving displaced of runway thresholds,
temporary visual flight approach system
installation and new markings and
lightings changes each time.
"All of the reconfigurations were
successfully deployed, allowing us to keep
the runway open during construction.
This was a major accomplishment,"
Aoude said.

Blue Grass
While most airports complete their
airfield pavement projects over several
months, Blue Grass Airport (LEX) opts

for hours. The airport will close for 72
hours for its upcoming runway work,
completing the entirety of the project
in that time.
"A lot of our peer airports tend to
close at night and perform incremental
milling, paving and markings. We studied
similar options. Our airport and local
contractors have a successful history in
weekend runway paving projects going
back almost three decades. I was fortunate
enough to be part of the last project, as
a consultant, helping to manage the
design of construction. Now, as part of
the staff of this airport, I am putting that
experience into practice as we prepare to
close the facility again," said Mark Day,
director, development and facilities, LEX.
To accomplish the feat, LEX works
with its airlines well in advance, and have
notified them that in August, the runway
will be closed for repair.
"Then we bring in an army of asphalt
staff and equipment," Day said.
Some work is done in advance, such
as removing in-pavement lighting, but
most work will occur over one weekend .
"During that weekend closure, the
contractor will bring in multiple milling
machines, mill it all off, truck all that
material out of here. We expect to see
four continuous paving trains working
simultaneously. Materials will be fed
from four asphalt plants located in our
region. Over 20,000 tons of asphalt will
be put down, followed by placement of
the markings that the pilots need to
The cracking of SGF's runway.
SPRINGFIELD-BRANSON NATIONAL AIRPORT

SGF's taxiway mid-way under
construction.
SPRINGFIELD-BRANSON NATIONAL AIRPORT

28 \ AIRPORTBUSINESS / OCTOBER 2020

see when landing. Further, we will see
installation of new lighting, taking out
the old incandescent fixtures, putting in
new LEDs. When the facility is reopened
to the public, it will look as if they are
using a brand-new runway," described
Day.
The project was identified in LEX's
master plan, with planning and design
beginning in 2016 and wrapping up this
past spring, led by consultant HDR. As
part of this phase, laser-based mapping
and nondestructive testing was used to
map out pavement cracks on the airfield.
"From that, the pavement condition
index (PCI) ranged from 49 to 66 for
different parts of the runway. We are
starting to see conditions go below
maintenance levels and are a strong
candidate for rehabilitation. In the case of
our runway, most of it consists of asphalt
over concrete. Some of that concrete has
been in place for about eight decades now
and is intact. As the subsurface integrity
is good, the project will consist of a mill
and overlay of the asphalt layer on top,"
said Day.
One aspect of the project will be
smoothing portions of the runway profile,
as the southern half is steeper than FAA
standards for new airport construction.
"As we've continued to grow and
serve larger aircraft over decades, the
wingspans have increased, which means
a future project may involve relocation
of our primary parallel taxiway further
away from the runway," Day explained.
The most unique factor remains the
72-hour closure, which Day said offers
a number of additional benefits.
"Primarily, we stretch the life of the
asphalt. By placing it in one continuous
paving operation, we reduce the number
of joints. When you pave under short
nightly closures, you introduce dozens
of 'cold joints' which are more susceptible
to water and have shorter life spans.
Asphalt is designed to bond strongly
under high temperatures. Just as in our
daily commute, we often see that the first
place where cracks and potholes form is
right along the paving joints between
the driving lanes. We don't want that
on our airfield. We have experienced a
higher quality product, resulting in less
maintenance and higher safety for the
aircraft that operate here," Day said.
"Every project is unique, and the best



Airport Business

Table of Contents for the Digital Edition of Airport Business

Inside the Fence: A Cold November Rain
Industry Update
Airport 5G Moves form Concept to Reality
Making Strides on Diversity and Inclusion in Aviation
How the Industry is Working to Combat COVID-19
Paving the Airfield
Airport Guru: Clearing the Air About Exclusive Rights at Airports
Legal Matters: Leasing Pitfalls in and Around Airports
The Right Stuff
Layer Surveillance Radar Technology into Physical Security Solutions for Real-Time Detection of Threats at Airport Sites
Product Profile: Go Quiet, Go Smooth, Go Big with Schweiss Hydraulic Doors
Airport Business - 1
Airport Business - 2
Airport Business - 3
Airport Business - 4
Airport Business - 5
Airport Business - Inside the Fence: A Cold November Rain
Airport Business - 7
Airport Business - Industry Update
Airport Business - 9
Airport Business - 10
Airport Business - 11
Airport Business - 12
Airport Business - 13
Airport Business - Airport 5G Moves form Concept to Reality
Airport Business - 15
Airport Business - 16
Airport Business - 17
Airport Business - Making Strides on Diversity and Inclusion in Aviation
Airport Business - 19
Airport Business - How the Industry is Working to Combat COVID-19
Airport Business - 21
Airport Business - 22
Airport Business - 23
Airport Business - Paving the Airfield
Airport Business - 25
Airport Business - 26
Airport Business - 27
Airport Business - 28
Airport Business - 29
Airport Business - Airport Guru: Clearing the Air About Exclusive Rights at Airports
Airport Business - 31
Airport Business - Legal Matters: Leasing Pitfalls in and Around Airports
Airport Business - 33
Airport Business - The Right Stuff
Airport Business - 35
Airport Business - Layer Surveillance Radar Technology into Physical Security Solutions for Real-Time Detection of Threats at Airport Sites
Airport Business - 37
Airport Business - Product Profile: Go Quiet, Go Smooth, Go Big with Schweiss Hydraulic Doors
Airport Business - 39
Airport Business - 40
Airport Business - 41
Airport Business - 42
Airport Business - 43
Airport Business - 44
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