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NORCAT Northern Centre for Advanced Technology Inc. at Cambrian College 1400 Barrydowne Rd Sudbury, Ontario Canada P3A 3V8 Telephone (705) 521-8324 Facsimile (705) 560-9741	DATE:	January 26 & 27, 1999
	ROCK BOLT TYPE:	Skema Friction Stabilizers
	IN ATTENDANCE:	Bill Quesnel, Len Leblanc - PHQ Eric Nelson Consultant Mark Poulin, Doug Luhta, Mike Mooney - NORCAT
	PURPOSE	Installation, pull test and removal of Skema split tube assemblies.
	LOCATION	NORCAT Underground Centre, Onaping, Ontario
	Test # Bolt Diam. Bolt Length Bit Diam. Pull Test Results 1 1.335" 6ft. 1.280" 6.5tons (ss-33 equivalent) 2 1.337" 6ft. 1.280" 9.5 tons (ss33 equivalent) 3 1.335" 6ft. 1.280" 6.0 tons (ss-33 equivalent) 4 1.555" 6ft. 1.364" 8.0 tons (ss-39 equivalent) 5 1.560" 6ft. 1.364" 11.0 tons (ss-39 equivalent)
	1. Holes were drilled by jackleg (115 psi drill pressure).  Installation of split set tubes was also by jackleg using generic style driver tool.  This caused some flaring of ring ends & loss of impact energy.
	2. Pull tests were conducted using Enerpac RCH 302 center hole jack and claw style pull assembly.    Instructions Hydraulic Rock Bolt Tester PDF
	3. Tubes #1 & #5 were marked & removed for NORCAT corrosion testing

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Last modified: November 07, 2007