What Is Set Loss? | Load Reduction During Ground Anchor Tensioning

But that's beside the point.

I believe there is an illustration like this on page 79 of the Design and Construction Standards for Ground Anchors.

Only the right side is shown here; I’ve written down the amount for the left side.

Tension with the Jack

Insert a wedge into the anchor head

Unload the jack

The wedge sinks in(Set loss)

The amount of indentation is less than the specified load

The steel wire loosens due to relaxation

Falls below the specified load

There's a risk of a landslide (exaggerated)
This refers to a situation where, due to set loss during the curing process, the load-bearing capacity during the service life is lower than expected.

To prevent that, tension is applied from the start, taking into account steel wire relaxation and set loss.

 

See you later.

*The format for the set loss report is available for download on the Shioda Development Co., Ltd. website.

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