Round shaft helical piles Shaft material: seamless high tensile pipe, conforms to astm a500 grade b Helices material: astm a36 hot rolled plate Corrosion protection conform to astm a153 standard for hot dipped zinc coating Leading edge of helices beveled 45 degrees Greater section modulus strength to resist twisting and deflection Greater load capacities Standard underpinning bracket The foundations resting on unstable soil may shift and settle. To correct this problem, helical piers s are screwed into stable soils and attached to the foundation with brackets. The underpinning brackets are utilized to support the weight of the structure. It is made from the highest quality steel, and is designed to last for years even under the most strenuous working conditions. Besides our most popular standard underpinning bracketsï¼?we can also manufacture several other types of brackets and connections. Screw anchor brackets Beam support bracket Slab bracket Light duty bracket