Page 9 - West Virgina 811 Magazine 2019 Issue 4

show a total lnz utility lines detected stalreholders, utility locator companies, lines, shielded tilier-optic caliles, utility
and coniirmed ahead of construction environment and civil engineering duct banks, contamination or leakage
or these 102 lines detected, 55% were firms, manutactures ui HDD machines, plumes and natural or man.made
undocumented in the construction as well as certiiicated construction voids.

cDmpar|y's library of as-liuilt maps. The inspectors. Unlike mm mmmmal Emphymal
deepest detection was an B—ft concrete . ,,

. As a member or the CGA Technology scanning tools, AMG is able to see
sewer line at nearly 60-fl depth. The . ,,
and Best Practices committees tor the through near-surtace clutter such
use or AMG has continued through a
. _ . . . past 3.years, stolar has met with CGA as reliar, thin water layers and moist
series of additional cnnrracturs-at-nsk . .
_. . stalreholders tocused on gathering landscaping as well as liuilt-up surtace

and expansion protects throughout the . . . .

LAWACDMPM intorination that could be applied in layers such as concrete, asphalt, gravel,

optimizing AMG tool design to best grass or multiple layering.

The results of the LAWA evaluation serve the underground utility locating Cmmng an Mwmd SHE Twum
pm]2cl were an evolutionary step marlret.

in locator technology, and AMG . AMG is combined with differential
was awarded the 2017 GRAND ‘MG T°°“"“l“33’ “d P'“‘“‘“ crs to provide centimeter-accuracy
CHALLENGE trophy by the America lt is important to understand that far location along the surtace. AMG’s
society ui civil Engineers (ASCE). detection-depth capability of AMG is unique gradiometric detection allows
Pollowing the award, the tool was only limited by the practical separation prediction of depth tor most linear
manutactured in small batches, with nf its widely spaced electrostatic. utilities (1 D.5fl accuracy). Unllkz

a fucus on continued evolutionary shielded magnetic dipole antennas, retlection CPR technology, AMG depth
development and participating in and not geology. Deep-looking AMG measurements are independent of soil
sciencebased demons-trational projects contigurations will have multiple electrical characteristics, and AM-

tor nontmclnrs-at-risk. Projects have antennas, with at least one pair at hand attenuation rates are typically
including AMG scanning at the wide.spacing This is zzqulred when less than 1 dB/rn, depth.ot.detection
Houston lnternational Airport, Phoenix deeper utilities, ioundatlons, karsts or exceeding 20 meters in most soil-types
Sky Harbor Alrport, san Francisco tunneling activity may be of interest and is not attected by the presence nf
Airport, seattle searac Airport, the Pess Th h h , , a water tabla, unlikc rm technology,
Parker Resort (CA). and several major M;l‘:;‘E _P°‘ “‘‘“§ 3;“ E"°":‘E"°“:d AMG detects all utilities, at any depth
municipal utility grids and waste-water d __ 3:Ehl”.°"““A;/K; ?““'a _ ha“ and eliminates the Crass-(wupled talse
treatment plants. P:‘l,’E:::d n‘j"‘:-lmdim*:’l‘;:’; d:"’:flE2 detection issue of RD. In practical use,
AMG was also evaluated over the to asels and infrastructure. ln general, AMG h“ mad“ “°“f‘"““"““ W“

_ _ . holing more ettective and less costly.
course of several years by international AMG has been proven to detect the AMG . be __ d f
engineering finns in the Eastern inllowlng buried utility types; electrical . ‘'‘.“5‘i‘'Y ““ . P’“°“*’° ‘"
Us d [h U ‘Ed K‘ d H‘, d . _ integration into design and engineering

an e ni ng om. is con uctors (any type), metal pipes .
,, . . _ ,, plans, and AMG technology brings
pre-introduction phase of the regardless nf contents, non-metallic .d d h _. 3_D as
developing AMG product-line included conduits, natural gas or tuel lines, '3?‘ 3“ ‘“"""“ °“‘“’? .
worlring with construction industry ol mer i es brick or concrete sewer '““""‘“3 ‘° SUE’ “"1 ‘° "” ""°'°““
P V V P ' owners and contmclnrs-at-risk. I
Background: AM Broadcast Tower Waveguide Transmlsslon
Vertical Electric Fleld (EV) & Ground-Penetratlng E" and H” Flelds
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2019, issue 4 Wesrwrglmasll . 7