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Subject: Crack monitors

Crack monitors

From: Pierlucio Pellissier <ppellissier>
Date: Thursday, February 15, 2001
Christine Cross <ccross1 [at] execpc__com> writes

>I am looking for information about crack monitors.

We used to apply very thin (1 to 2mm) strips of glass through the
crack, imbedded in plaster. On the glass we inscribed the date of
imbedding. Any movement in the structure will cause the glass to
break, letting us know when and where the movement occurred. This is
a simple method that anyway requires a routine survey of the
monitored cracks.

Pierlucio Pellissier
Arts and Architecture
Architect/Restorer
Montreal, Canada


                                  ***
                  Conservation DistList Instance 14:45
                 Distributed: Friday, February 16, 2001
                       Message Id: cdl-14-45-002
                                  ***
Received on Thursday, 15 February, 2001

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