----- Original Message -----
From: Luke Steer
To: UK Tree Care
Sent: Wednesday, August 05, 2009 3:34 AM
Subject: RE: RE: Cable Bracing etc.
Hi Bill,
You make some good points. In my experience most steel cables are fine for
a long time. After they are put in the bolt head and then the ring on the
bolt become enveloped in woody tissue which prevents air getting to the part
of the bolt that is within the tree and, in turn, this prevents rust. It
appears that the problems start when the cable starts to become enveloped by
the tree. Air can still get through the cable to be part that's enveloped
but it also remains moist and the cable rusts. Do these observations accord
with yours?
SC Luke. US Standards call for industrial or marine grade (basically)
galvanized hardware and a plated or galvanized cable. So even exposed
hardware takes decades to rust. Hardware store grade Cadmium plated hardware
will rust.
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