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The Largest Helical Pier Inventory in the Northeast and Mid-Atlantic US
Certified Helical Pier Installers: NJ, PA, DE, NY, CT, MA, RI, NH, ME, VT, MD, VA – DC area
The Hunt at Louvier, Newark, DE
CERTIFIED INSTALLER:
Phoenix Construction
ENGINEERING DESIGN:
The contractor excavated to the footing elevation and
discovered soil unsuitable for the “standard” footer.
Competent soil was found to be at least 10 feet deeper.
Excavation and replacement with compacted fill was
determined not to be cost effective in this case. As an
alternative, Chance SS-5 galvanized HELICAL PIER®
Foundation Systems anchors were submitted to the City
of Newark and approved.
PROJECT DESCRIPTION:
A large two-story house with basement was to be built
at The Hunt of Louvier subdivision, outside Newark,
DE.
HELICAL PIER DESIGN SOLUTION:
Phoenix Construction installed the underpinning anchors
with a Chance torque head mounted on a Kubota
backhoe. Each anchor had two helices (10" and 12"
diameters) and was installed until 3,500 ft.-lb. of torque
was reached. Torque was measured by a Chance shearpin
torque indicator. Average anchor depth was 22 feet.
A locally-fabricated load-transfer device was placed on
each cut-off anchor shaft. The device consisted of
square tubing welded to a 6" x 6" top plate. Plate
elevation was 3" above the footing bottom
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