A Troubleshooting Guide for Roof Support Systems |
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Tensioned Rebar Bolts
EXCESSIVE THREAD TAKE-UP DURING TIGHTENING
EXCESSIVE BLEED OFF
ERRATIC OR POOR TORQUE/TENSION
BOLT PULLS THROUGH PLATE
EXCESSIVE SUBSEQUENT TORQUE
INSTALLED TORQUE NOT ACHIEVED
SPRINGY BOLT
PLATE FAILS AFTER INSTALLATION
EXCESSIVE INSTALLED TORQUE
BOLT BREAKS ON INSTALLATION
PLATE FAILS ON INSTALLATION
LOW ANCHORAGE
LOOSE PLATE
THREAD TAKE-UP DURING MIXING
NUT THREADS STRIP OUT
BOLT BREAKS IN BEND
TORQUE INHIBITOR DOES NOT BREAK
WASHER BADLY DEFORMED
WASHER CRACKS
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