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CHANCE Civil Construction (http://www.abchance.com) > Applications (http://www.abchance.com/applications/) > Deep

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Deep Foundation SolutionsHubbell Power Systems, Inc. is the world’s leading helical anchoring and foundation manufacturer. The CHANCE® brand

family represents American made products for the civil construction, deep foundation, electric utility, oil/gas, railroad, and

renewable energy markets. Backed by over 100 years of engineering experience, the CHANCE® Helical Pile System offers

a technically advanced and extremely cost effective alternative to other foundation systems.

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Deep Foundations

Página 1 de 4Deep Foundation Systems & Piling Foundations by CHANCE

09-04-2016http://www.abchance.com/applications/deep-foundations/

A deep foundation transmits the structural loads to soil/rock that are deeper in the ground; as contrasted to a shallow

foundation, which transmits the structural load to the soil/rock that is relatively close to the grounds surface. Deep foundation

systems are used in instances where a shallow foundation is not possible, not practical, or will not carry the load. Examples

of when to use a deep foundation solution are weak surface soils, unstable surface soils, or expansive surface soils.

CHANCE® Helical PilesExamples of deep foundation elements are driven piles, drilled

shafts (caissons), auger-cast piles, and CHANCE® helical piles.

CHANCE® helical piles are pre-manufactured steel deep

foundation elements consisting of a central steel shaft and one or

more helical shaped bearing plates. A helical pile is installed by

rotating or screwing it into the ground. Each helical bearing plate is

formed into a screw thread with a uniform defined pitch.

Helical Pulldown® MicropileThe Helical Pulldown® Micropile is a system for constructing a

grout column around the shaft of a standard Helical Pile

Foundation System.

The Helical Pulldown® Micropile does not require removing spoils

from the site. By combining both end-bearing on the helical plates

and skin friction along the rough surface of the grout column, the

result is an increase in buckling and compression capacity for the

pile system. Specify or use the Helical Pulldown® Micropile on

your next project.

Installation of the Helical Pulldown

MicropileThe Helical Pulldown® Micropile installs quickly in any weather

condition. A hydraulically powered torque motor is mounted to

standard construction equipment such as a digger-derrick truck,

line truck, rubber tired backhoe, track-hoe excavator, or front end

skid-steer loader. Continuous torque and crowd is applied to

advance the HELICAL PULLDOWN® Micropile into the soil. As the helical plates pull the pile downward, the displacement

plate forces soil outward creating the void which the flowable grout then occupies. This displacement pile system does not

require removing spoils from the site. Some of the deep foundation applications, features and benefits are listed below:



Deep Foundation Applications

Commercial / Industrial

High capacity / Greater than 100

Underpinning applications

New construction

Build on weak soil sites

Limited access

Bridges

Features

• Proven engineered system

• Terminations for various applications

• Combines bearing and friction – best

of both worlds Extendable with

bolted joint connection

Benefits

• Speed: 40-50 piles per day / per

crew

• High capacity

• Predictable results

• Cost-effective

• Labor saving – smaller crews

• No pre-drilling

• Resistance to buckling in weak soils

• Stiffer pile (deflects less at a

particular load)

• Additional corrosion protection in

aggressive soils

Hubbell Power Systems, Inc. has been manufacturing helical piles for deep foundations for nearly 100 years. For more

information on our helical solutions for deep foundations, contact your Application Support Supply Partner today

(http://www.abchance.com/contact-us/partner/).

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