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Forms of Prestressing steel Tendon A group of strands or wires are wound to form a prestressing tendon Cable A group of tendons form a prestressing cable Bars A tendon can be made of single steel bar. The diameter of bar is much larger than that of wire .

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Chapter 8 Anchoring Structures ... In some cases. Strand anchors use single. (2) Slabs. Anchorage of the dead end is accomplished by an anchor cone. In cold climates. assuming the mass of rock bounded by a 90-deg apex angle at the bottom with allowance for overlap from adjacent anchors. ... “Materials” requirements shall be used for ...

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Stressing by centre hole jack coupled with external barrel and cone Cone wedge grips on individual strands in triple anchor blocks Flanged steel casting with bridge support for triple anchor blocks 310 tons (27 strands 0-5 in. diameter) wedge grip 1 in. = 2-54 cm; 1 ton = 1-016 tonnes.

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The steel savings are made up of a 56% reduction in reinforcement steel offset by an 8% increase in post-tensioning. The PT steel represents only 7% of the material emissions and 4.9% of the total emissions but post-tensioning allows the whole project to reduce its global emissions by 37%.

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The pullout capacity of the cone is a function of the weight of the cone and the shear resistance of the rock along the surface of the cone. Rock anchors are typically designed with embedments deep enough to ensure ductile failure of the steel bar.

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Steel-to-concrete or concrete-to-concrete connections can be accomplished through the ... This anchor requires an independent stud, nut and washer, and is stronger in ... Cone. Figure 3.1-1 Common Types of MEAs. 3.1.1 Resistance (Design Strength)

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In the parametric analysis of the in-cone bonding anchor, as the coefficient of friction at the barrel-adhesive interface increases, the stiffness will increase and the radial compression will decrease, such that it will be more difficult for the steel barrel to yield under a certain load.

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On Made-in-China.com ... increases the area of the shear cone. The design of the insert leaves an open space between the two loops, allowing the insert to "straddle" reinforcing steel or prestressing strands. Standard sizes are shown in the chart and other sizes are

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anchor load testing, and inspection of construction materials and methods used for anchored systems. ... Since 1988, advances have been made in design methods and from new construction materials, methods, and equipment. Results of anchored system performance monitoring and research activities conducted since 1989 are ... 2.2.3.1 Steel Bar and ...

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