About this document
Multipoint Borehole Extensometer Guide by Andres Mejia is a document available to read on EtoBox.
This document provides instructions for installing and using a multipoint rod extensometer. The extensometer consists of a head, multiple measuring rods of fiberglass, steel, or invar protected by sleeves, downhole anchors for each rod, and grouting tubes. Measurements are taken manually with a caliper or remotely with electric transducers connected to a readout. Proper installation requires a borehole of sufficient diameter stabilized walls. The document provides guidance on preliminary checks, installatio
- Author
- Andres Mejia
- Language
- EN