Commercial Investment Real Estate March/April 2017 | Page 13
Unearthing Hidden Utilities
So much for what is coming, but what about the hidden assets?
If the underground infrastructure of a busy city is not adequately
understood, it can affect the viability of a site and construc-
tion schedules. Without careful, accurate verification of utility
records, costs can mount.
Utilities have a responsibility to maintain records of their bur-
ied assets and to make the records available to developers. Each
utility, however, has its own records and combining these is the
first obstacle to overcome.
However, when it comes to the decision about where to dig
— where to actually break concrete and how far down to go —
relying solely on the single line representation of a utility route
on paper or electronic image may not be enough. A breach in a
main water line is costly to repair, and a misplaced shovel through
a high voltage cable is dangerous.
Seeing Underground
Technologies to see what is going on below the pavement
and roadways are not new, but their complexity increases
every day. Electromagnetic locators, cable avoidance tools,
and signal generators have been around for many years, often
providing a hand-held tool to check the position of cables
or pipelines.
Techniques using Ground Penetrating Radar provide a faster
way to gather the necessary data. Mounting a Ground Penetrating
Radar scanner on a trailer means a steady driving pace is all that’s
needed to get a view of the services in place, saving the expense
of road closures.
Ground Penetrating Radar results still require a certain
level of interpretation, and experienced surveyors will balance
the radar results against other evidence before confirming
the position of an underground feature. Does the radar coin-
cide with the utility drawings? Is the coincidence of draw-
ing and radar result within an acceptable range? Data can
then be loaded directly into building information models and
compared with the plans for new work. Understanding the
location of buried assets will support design decisions while
avoiding costly re-routing of utility services.
In the end, development is all about the data. Increasingly
sophisticated discovery tools are pushing out more data to pro-
duce a digital picture of assets above and below ground. The data
management, display, and rendering tools that support BIM need
to be able to combine this data, supporting better planning and
cost savings right from the early design stage.
Christine Easterfield is principal consultant at Cambashi in
Cambridge, England. Contact her at [email protected].
Congratulations
to the newest CCIM
Designees
Coldwell Banker Commercial ® has the most
CCIM designees and candidates of any
commercial real estate company!*
*Source: CCIM 2017
Daniel Bennett, CCIM Jes Prince, CCIM
Coldwell Banker Commercial
Upchurch Realty
Athens, GA
(706) 340-6066 Coldwell Banker Commercial
Arnold & Associates
Beaumont, TX
(409) 656-6240
Scott Graf, CCIM Mary Street, CCIM
Coldwell Banker Commercial
TEC, REALTORS ®
New Orleans, LA
(504) 566-1777 Coldwell Banker Commercial
Advisors
American Fork, UT
(801) 702-4693
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