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2. Precast concrete lifting anchor system - Wikipedia

   en.wikipedia.org/wiki/Precast_concrete_lifting...

   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 ...

3. Anchor bolt - Wikipedia

   en.wikipedia.org/wiki/Anchor_bolt

   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. [8] The channel can be a hot-rolled or a cold-formed steel shape in which a T-shape screw is placed in order to transfer the load to the base material.

4. Threaded insert - Wikipedia

   en.wikipedia.org/wiki/Threaded_insert

   TIME-SERT insert. A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole. [1] They may be used to repair a stripped threaded hole, provide a durable threaded hole in a soft material, place a thread on a material too thin to accept it, mold or cast threads into a work piece thereby eliminating a machining operation, or ...

5. Anchor channel - Wikipedia

   en.wikipedia.org/wiki/Anchor_channel

   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.

6. Fastener - Wikipedia

   en.wikipedia.org/wiki/Fastener

   A threaded fastener has internal or external screw threads. [7] The most common types are the screw , nut and bolt , possibly involving washers . Other more specialized types of threaded fasteners include captive threaded fasteners , stud , threaded inserts , and threaded rods .

7. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   The screw itself should be drilled a minimum of 1" into the concrete to hold effectively and a maximum of 1-3/4" or the threads will wear and will lose holding power. Ideally 1-1/4" to 1-1/2" of screw thread in the concrete. [1] So for example, if a 1/2" board is being screwed onto the concrete, a 1-3/4" to 2" concrete screw should be used ...