Overview:
A.B. Chance manufactures electric utility transmission and distribution products, as well as products for the telecommunication, construction , pipeline and consumer markets. The A.B. Chance reputation for high quality products and performance establishes it as a leader in the industry. A.B. Chance has been ISO 9001 registered since 1992.
Since 1912, A.B. Chance engineering experience and construction expertise with helical anchors have derived special techniques, tools, designs and sizes with unique advantages. Chance® helical anchors extend bearing plates into stable strata under expansive surface soils without significant disturbance.
A.B. Chance engineering expertise, with 1,400,000 sq. ft. of manufacturing facilities, leads the world in anchor development and quality. A.B. Chance also markets to electric and telephone utilities and the pipeline industry. For your assurance of high quality, the A.B. Chance manufacturing system has earned registration by ISO certification. When you specify A.B. Chance you have selected the highest caliber products from the leader of the industry.
In this "soil nail" application, a Chance® screw anchor acts in a bearing mode compared to grouted anchor, which relies on friction. This gives the Soil Screw® Retention Wall System economic advantages. Bearing plates are spaced along the entire length of Soil Screw® anchors. They are ready for immediate loading as soon as installed.
Specifically designed for above-grade and on-grade mounting of parking area/site lighting standards, these non-extendable foundation anchors have high-strength pipe shafts to resist bending moments and substantial installing-torque ratings.
Chance® Screw Anchors are installed into the harbor bottom by either work boats or divers using hydraulic rotary installing equipment with anti-torque devices. The bearing plates are installed through the silt to good bearing soils and the chains or lines are connected to the mooring or platforms above. The same anchors are used in the fast growing aqua-culture field holding fish cages securely to the ocean bottoms.
Pipeline Screw Anchors provide an excellent answer for stabilization of oil, gas, and other pipelines. Buoyancy of pipelines is a major concern in the design and construction of all pipelines. In water or mud, an empty pipeline with a diameter greater than 12 inches can push itself to the surface if it has not been anchored. Economics and engineering evaluations show that screw anchors are the predictable, measurable, and economical means for pipeline stabilization.
Screw anchors can help prevent wall movement by holding the wall when soil swells and the resulting pressure pushes against the wall.
Retaining walls can be designed using screw anchors with a modest increase in cost. Proven and building code accepted, these anchors will keep retaining walls from moving.
Basement walls can be repaired using helical screw anchors. This is accomplished by drilling a small hole for the anchor rod to pass through the basement wall, and then excavating a hole outside to place the bearing plate. A small high torque motor then rotates the screw anchor system into the soil. Once depth and predetermined torque is achieved, the anchor is terminated and a plate is mounted inside the basement wall to hold the wall in place. If the wall needs to be moved, then sufficient soil must be removed to allow the wall to move.
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