The Magnum MP1027-3 lifting bracket has 50 tons maximum ultimate capacity, 25 tons working capacity in compression and 10 tons maximum ultimate capacity, 5 tons working capacity in tension. For tension applications, one 3/4″ bolt must be tapped and blind threaded into pile shaft. The bracket consists of a collar tube with (1) 3/4 threaded bolt holes for connection to Magnum hydraulic rams and 6 thru holes for attachment to existing concrete
using concrete expansion anchors. The bracket is designed in accordance with ICC-ES document AC358 as well as IBC, ACI, and AISC codes. Design and detailing of the connection to the structure varies by project and is the responsibility of registered design professional including maximum concrete span, pier spacing, concrete shear, and concrete bearing.
Prepare the existing foundation. For steel push pier applications, attach the bracket and Magnum ram. Install the push pier to the required pressure and load test. For helical pile applications, excavate the pier location so the helix bearing plates fit below the existing foundation and the shaft is as close as possible to the face of the foundation. Install the helical pile to the correct depth and torque. Mount the bracket by sliding down the shaft rotating into position. In both cases, lift the structure as needed using either a “wide” Magnum ram or hydraulic jack with top lifting fixture. After lift, tighten hex nuts against cross beam. Release pressure and remove ram or jack. If desired, trim thread bars flush with top of nuts.
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U.S. Patents 6,058,662 and 5,234,287; Other Patents Pending