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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

   In this case, concrete base material might be undamaged. Pull-out: the anchor is pulled out from the drilled hole partially damaging the surrounding concrete. When the concrete is damaged the failure is also indicated as pull-through. Concrete cone: after reaching the load-bearing capacity a cone shape is formed.

4. Rail fastening system - Wikipedia

   en.wikipedia.org/wiki/Rail_fastening_system

   A rail spike (also known as a cut spike or crampon) is a large nail with an offset head that is used to secure rails and base plates to railroad ties (sleepers) in the track. Robert Livingston Stevens is credited with the invention of the rail spike, [ 6 ] the first recorded use of which was in 1832. [ 7 ]

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. Screw piles - Wikipedia

   en.wikipedia.org/wiki/Screw_piles

   Large load capacity screw piles may have various components such as flat half helices, Bisalloy cutting tips and helices, cap plates or rebar interfaces for connection to various concrete or steel structures. Most industries use screw piling experts due to the cost efficiencies and, increasingly, the reduced environmental impact.

7. This popular device that makes beach umbrellas better was ...

   www.aol.com/popular-beach-umbrella-anchor...

   A popular beach umbrella anchor was invented in South Carolina and has been sold across the east coast. ... Inventor Mike Haney created the original Mike’s Spike over Easter weekend in 2006 in a ...