Sinking foundations, cracked and buckled walls and uneven floors are problems commonly faced annually by some quarter-million homeowners. Homes and other structures situated on unstable soils settle when their foundations are subjected to extreme moisture variations or lack proper drainage. A shifting foundation may result in structural damage to your home and loss of your investment.
• Foundation walls that are buckled or bowed
• Doors and windows that stick or don't open properly
• Cracks in foundation walls
• Cracks in exterior walls
• Cracks in interior walls and ceilings
• Sunken or buckled interior concrete floors
The CHANCE® Helical Pile Foundation System offers a technically superior and cost-effective alternate to other remedial systems. Our system is backed by more than 80 years of structual engineering experience.
The concept is founded on the principle of turning a helical (screw) pile into stable subsoil strata until the torque applied indicates that the necessary load capacity has been achieved. Adjustable brackets are then attached to the base of your foundation walls, connecting the piles to the foundation. The weight of your home is then transferred to the piles. In this process, the foundation, walls and floors are repositioned and retained from further movement.
This innovative system contrasts with other more costly and time-consuming methods which require extensive excavation that can disturb site features such as walkways and landscaping.
Our system may be installed only by contractors we certify. The load-bearing steel shafts are screwed into the ground independent of the structure and their bearing or holding capacity is verified via torque correlation as the system is installed.
The proven and reliable system for correcting foundation problems
• A time-proven, versatile and technically sound system
• Lower cost - both for the system and its installation
• Faster installation than other methods
• Very limited excavation - site is minimally disturbed
• No heavy equipment required
• Install in limited-access areas
• Used in new home construction to enhance foundation strength on sites with poor soil conditions
When you select the CHANCE Helical Pile Foundation System to remedy your foundation problems, a dealer trained and certified by CHANCE Civil Construction will visit to inspect your home and foundation to determine repair options. The dealer will prepare a plan of repair based on your home's damage and weight and local soil conditions. The plan of repair will address the size, location and load requirement for each helical pile. Then the dealer will give you a price quotation and time estimate for the CHANCE Helical Pile Foundation System installation.
Power-installed helical piles have proven to be a reliable and economical advancement in foundation technology. The CHANCE Helical Pile Foundation System hardware is available in a wide range of sizes to meet many project applications.
The system components include solid-steel square shafts or round pipe shafts to most economically meet any design-load requirement. The standard underpinning bracket typically comes complete with the hardware required for assembly to the helical pile shaft. The lifting assembly, consisting of the underpinning bracket and jacking tool, is designed to lift with hydraulic jack assistance.
Hardware is also available for specialized applications, such as the Uplift bracket for seismic conditions, as well as a variety of extensions, adaptors, wall anchor kits and slab-repair brackets.
All components are Hot-Dip Galvenized to increase product life in aggressive soils.
CHANCE also offers unique product resources such as:
• Training and field supervision of CHANCE Certified Installers
• Geotechnical engineering guidance for any job
• Computer-assisted design capability through interactive software programs and a field manual bringing design theory to practical field application
To restrain movement in foundation walls. Through a hole drilled in wall, a rod threads into an anchor plate installed into the soil bank. A ribbed retainer plate and a nut secure the rod inside the wall. Either of two methods may be used to stabilize, or often to straighten, failing walls.
Helical pile installation by hydraulic driver
Chipping notch out of foundation footing for bracket attachment
Helical pile shafts are cut off, then brackets are attached
Hydraulic jack pushes down on helical pile shaft and up on foundation held in bracket
We install the best product, do it with professional skill and integrity - that is our mode of operation.
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