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Installation Instructions for Snap Seal Inclinometer Casing <br /> 7 Repairing Damaged Casing <br /> Damaged Snap Seal Casing can be repaired using RST repair couplings. Most of the time, casing <br /> becomes damaged near the top of the borehole due to movement of heavy equipment etc. In any case, <br /> the damaged portion of the casing needs to be removed. <br /> 1. Cut off the damaged portion of the casing using a hacksaw. Be sure to make this cut as square <br /> as possible. Remove all burrs. <br /> 2. Apply ABS 771 Cement to the inclinometer casing (Figure 6). The repair coupler will slide over <br /> top and the alignment tool will be used. <br /> 114" 1 <br /> Apply ABS <br /> 9s <br /> Cement <br /> 3 <br /> 21/241 <br /> Figure 6—Casing Preparation <br /> 3. Slide the RST repair coupling onto the casing and align the grooves using the RST Coupling Tool <br /> (Figure 7). Allow the cement to cure, according to the directions on the label. <br /> Figure 7—RST Coupling Tool <br /> 4. Install the next section of Snap Seal casing as usual (section 5.3). Ensure that the keys and <br /> keyways are aligned. <br /> 8 Installing Corrugated Settlement Sheath Pipe <br /> Another option to using Telescopic Sections is the use of Corrugated Settlement Sheath Pipe. This <br /> allows the inclinometer casing to remain in a static position while the ground moves around it. <br /> Settlement can thus be observed at the collar of the borehole. For example, if the ground settles, the <br /> casing will be observed to extend farther out of the ground than previously. <br /> 12 <br />