Saturday, 5 July 2014

Piglet-tail hooks

During the blizzard in March, some of the screws that held the HBA anchors were bent out of shape, resulting in the anchor coming loose. In other cases, the S-haakje would deform to release the anchor.

We have been experimenting with alternative anchor designs to try and come up with a more secure way to hold the anchors in place. Although we cannot change the staafje, we can replace the way the O-ring connects to the timber frameset.

One method is to use a spiralled hook which we refer to as a 'piglet-tail hook'. This lets the O-ring be connected without it requiring the drill. On the other hand, the extra loop still prevents the O-ring from coming loose in the event of extreme wind buffetting.

'piglet-tail' hooks on tile H76. (Photo: D. McKay-Bukowski)

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