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The anchor selection, together with additional reinforcement, and rigging arrangements is influenced by: - The dead weight of the element - The number of anchors in the element and the configuration of the anchor - Capacity of the anchor at the specific concrete compressive strengths at time of lift - The dynamic loads applied during lifting ...
Moreover, their position must also be coordinated with the reinforcement layout. [3] Different types of cast-in-place anchors might be distinguished: [3] Lifting inserts: used for lifting operations of plain or prestressed RC beams. The insert can be a threaded rod. See also bolt (climbing). Anchor channels: used in precast concrete connections ...
Single helix earth anchors Guyed mast anchor. An earth anchor is a device designed to support structures, most commonly used in geotechnical and construction applications. Also known as a ground anchor, percussion driven earth anchor or mechanical anchor, it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.
[3] The company filed for Chapter 11 bankruptcy protection on April 29, 2010. [4] It emerged from bankruptcy on August 31, 2010 after reducing its debt by $272 million. [5] On October 30, 2012, Central Concrete Supply Co., Inc., a wholly owned subsidiary of U.S. Concrete, completed the acquisition of Bode Gravel Co. and Bode Concrete LLC. [6]
The magnitude of total anchor force required in the tieback can be determined by analyzing the soil and groundwater properties as well as sources of external loads applied to the system. [ 2 ] The bond length of the tieback must extend beyond the potential critical failure surface of the soil.
For example, if the water is 8 metres (26 ft) deep, and the anchor roller is 1 m (3 ft) above the water, then the 'depth' is 9 meters (~30 feet). The amount of rode to let out in moderate conditions is thus 36 meters (120 feet). (For this reason, it is important to have a reliable and accurate method of measuring the depth of water.)