Helical Piles: Out with the New, in with the Old

Posted by EBS Geostructural on Nov 17, 2020 9:45:00 AM

Though the concept of urbanization accelerates the cities we live in, a resurgence in the restoration of heritage buildings is still very much alive. Located in Toronto’s busy downtown, 642 King St. W. is a 30,000 ft² four-storey, restored brick and beam building of mixed office and retail space.

Read More

Topics: Foundations, Civil, Helical Pile Applications

3 Reasons to Use Helical Piles to Secure Solar Panels

Posted by CHANCE Foundation Solutions on Nov 2, 2020 10:15:00 AM

Technological advances have turned solar power into a viable alternative energy source on both the individual and industrial level. People everywhere are discovering that the installation of solar panels on their homes can significantly diminish their carbon footprint and slash domestic energy bills. But making large-scale solar energy generation a reality presents more of a challenge.

Read More

Topics: Foundations, Civil, Helical Pile Applications

Getting an Accurate Helical Pile Bid

Posted by EBS Geostructural on Oct 20, 2020 9:29:00 AM

Deep foundation pricing is multifaceted and a one price fits all approach can lead to unexpected costs. To break down the pricing, the following list can help provide a better understanding of the top 4 factors that can affect pile prices and why they are important pieces of information when looking for estimates:

Read More

Topics: Construction, Helical Pile Benefits, Civil, Engineering

3 Methods to Determine Helical Pile Capacity (and why you should use 2)

Posted by Gary Seider on Oct 1, 2020 7:30:00 AM

The load capacity of helical piles can be determined 3 ways. The method(s) used are dictated by the information available. The capacity of a helical pile must equal or exceed the factored load that the pile is required to support.

Read More

Topics: Civil, Engineering, Torque

Foundation Solutions for Environmentally Sensitive Areas

Posted by Intech Anchoring Systems on Sep 4, 2020 8:15:00 AM

A key benefit of helical piles is the ability to install them in environmentally sensitive areas. CHANCE helical piles are precisely engineered to create minimal disturbance to the soil itself during installation with the pitch and placement of the helices precisely calculated. Helical piles can also be installed using limited access installation equipment eliminating the need for damaging access roads and large equipment required for other foundation types.

Read More

Topics: Construction, Helical Pile Benefits, Helical Pile Applications

Helical Pile Foundation Engineered to Support Hillside Boardwalk Trail

Posted by Walder Foundation Products on Aug 21, 2020 11:15:19 AM

Helical piles have been gaining notoriety as an ideal foundation solution for many types of trails, boardwalks, and walkways. The town of Ashland, Virginia sought a pedestrian and bicycle trail constructed to connect Carter Park to the existing Ashland trolley line trail. The trail is an easy half-mile walk along a very straight and level path. To connect Carter Park to the Ashland Trolley Line Park trail a boardwalk was needed over the steep embankment along Walder road. The Ashland Trolley Line Park Trail is a Greenway trail which is protected and managed for conservation and recreational purposes.

Read More

Topics: Construction, Foundations, Helical Pile Applications

How To Build A Lasting Pool Foundation

Posted by Foundation Technologies, Inc. on Aug 4, 2020 9:15:00 AM

As with a foundation on a home, the foundation of a swimming pool can experience sinking due to unstable or poorly compacted soil. Ensuring a pool is constructed on a deep, lasting foundation will protect the owner investment and save them from costly future repairs. Whether you're a contractor building a backyard pool or an indoor aquatic center, starting on a firm foundation is key for the long-term success of any project, and there are a wide range of variables in the design process.

Read More

Topics: Construction, Foundations, Helical Pile Applications

Engineered helical piles for lateral load capacity on ballistic barriers

Posted by Josh Lindberg on Jul 24, 2020 9:49:00 AM

Helical piles are an established solution for foundation underpinning, but their applications are as far-reaching as the creativity of an engineer. Helical piles are typically associated with gravity load - force pushing down on the pile. In the project below, helical piles are utilized to support lateral loads, including wind and seismic loads.

Read More

Topics: Construction, Engineering, Helical Pile Applications

Vertical and Battered Helical Pile Groups to Mobilize Lateral Load Capacity

Posted by Jason Herron, P.E., C.W.I. on Jul 9, 2020 8:15:00 AM

Helical piles have become a common piling system in the North American construction market.  They are used for many applications with low to moderate tension and compression loads.  Slender helical piles, less than 4.5 inches in diameter, have historically been used for light shear loads of 1 to 5 kips in vertical applications. This method derives the lateral capacity as a function of the pile’s allowable structural bending moment and the allowable passive earth pressure of the soil. It is common to analyze the capacity of the piles by theoretical slender pile equations, P-Y curves, or software programs that model P-Y response. An adequate safety factor or a service limit on the allowable deflection is applied to the allowable loads to determine an applicable pipe size. In recent years larger piles, with diameter greater than 5.5 inches, have been used for larger lateral loads.  Large diameter piles have been designed for loads in excess of 20 kips. 

Read More

Topics: Foundations, Helical Pile Benefits, Engineering

Origin and Development of the Torque Correlation (Kt) Factor

Posted by Gary Seider on Jun 11, 2020 11:23:14 AM

Today, it is generally accepted that installation torque can be used to verify the axial capacity of helical piles.  The International Building Code (IBC) 2012, 2015 & 2018 Section 1810.3.3.1.9 states there are three ways to determine axial capacity.  Method 2 states the ultimate capacity can be determined from well documented correlations with installation torque.  The installation torque-to-capacity relationship is an empirical method originally developed by the A. B. Chance Company in the late 1950’s and early 1960’s. For over 60 years, Hubbell Power Systems, Inc. has promoted the concept that the torsion energy required to install a helical anchor/pile can be related to its ultimate capacity.  Precise definition of the relationship for all possible variables is the subject of on-going research.  However, simple empirical relationships, originally derived for tension applications but also valid for compression capacity; continue to be used as part of project specifications to verify capacity.  The principle is that as a helical anchor/pile is installed (screwed) into increasingly denser/harder soil, the resistance to installation (called installation energy or torque) will increase.  Likewise, the higher the installation torque, the higher the axial capacity of the installed pile/anchor.  The CHANCE® torque correlation equation is:

Read More

Topics: Foundations, Engineering, Torque

Recent Posts




Subscribe

Be the first to know! Receive a weekly email with the most recent blog posts.


About

Thanks for visiting the CHANCE® Foundation Solutions' blog. Please subscribe to stay connected and we will update you when new content is published. If you have any suggestions for content you would like to see, please contact us at emarketing@hubbell.com.