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A hold-down may also refer to clamping device used to anchor a pipe to a structural steel element or concrete floor or allow movement of the pipe in an axial direction. [1] At the bottom, the hold down is connected to the concrete foundation or structural slab by an embedded or epoxied anchor bolt. At the top, the hold down is connected to a ...
Simpson Manufacturing Company is a leading building materials manufacturer in the United States that produces structural connectors, fasteners, anchors, and products for new construction and retrofitting. The company was founded by Barclay Simpson in Oakland in 1956, as a successor to his father's window screen company. [1]
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 ...
For instance, seismic pull-out action on anchor can have 0.03 seconds of rise time. On the contrary, in a quasi-static test, 100 second may be assumed as time interval to reach the peak load. Regarding the concrete base failure mode: Concrete cone failure loads increase with elevated loading rates with respect the static one. [25]
Helical anchors consist of an extendable steel shaft with helical bearing plates. Piles or piers refer to strong base elements that withstand or transfer vertical/horizontal loads. Anchors are piles utilised only in tension applications like restraining wall tiebacks or vertical ground anchors made to resist overturning forces.
A pipe anchor is a rigid support that restricts movement in all three orthogonal directions and all three rotational directions, i.e. restricting al the 6 degrees of freedom This usually is a welded stanchion that is welded or bolted to steel or concrete. [2] In case of anchor which is bolted to concrete, a special type of bolt is required ...
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Anchor channels, invented by Anders Jordahl in 1913, are steel channels cast flush in reinforced concrete elements to allow the installation of channel bolts for the fastening of components. Anchor channels consist of steel C-shaped channels and anchors (mostly headed studs ) which are connected to the channel by welding or riveting/forging.