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CAPE TOWN WORKSHOP - Thursday evening 11 April 2013 + Saturday 13 April 2013
PURPOSE ::
(a) In-depth knowledge and skill is provided to perform a kinetic recovery with safety and confidence.
(b) to provide the candidate a thorough understanding of the forces involved in a kinetic recovery
(c) be able to approximate stuck forces and strength of recovery points and mountings
Don't get scared of the physics and easy maths used in this module. Formulas are given and principles are explained.
Duration : 1.5 days
DATE TIME AND VENUE
Thursday 11 Apr 2013 18:00 :: Theory : Will be announce later - Bellville area.
Saturday 13 Apr 2013 08:00 - 17:00 :: Practical : ATLANTIS DUNES
Cost : R1550.00 : Payable in advanced
Included : Use of 4x4 track, Training Manual.
Enrolment : Enrol Online here (restricted to 15 candidates)
(Candidates from other provinces who wishes to do the workshop in another region, can enroll online ABOVE, indicating the required area. If there is enough interest, a workshop will be arranged in that area, and enrolled candidates will be informed accordingly.)
What to bring with on Thursday 11 Apr 2013:
1 x Certified Copies of ID ; 1x Certified Copies of Drivers License; 2 x color passport size photos with name printed at the back ; black pen and writing pad, calculator. Refreshments will be served.
What to bring with on Saturday 13 Apr 2013:
4x4 Vehicle ; Vehicle's Owner Manual ; Tyre Pressure gauge; 12V Tyre Pump ; Spare wheel; Wheel spanner; Gloves; Any recovery equipment you may have - kinetic strap or rope (preferable), shackles, bridles ; 10meter measuring tape; black pen and writing pad, calculator, 2 liter drinking water per person; Picnic basket for lunch and refreshments for the day.
Working Documents :
Workshop Manual to complete; Training Manual
THEORY (4 hours) :: mathematical models to approximate real kinetic scenarios
CALCULATIONS ON STRENGTH OF MATERIALS (Tensile-, Yield-, Bearing-, WLL calculations, Strength HT bolts, Strength Chassis, Recovery points - design and determine strength, MBS of straps, ropes, wire rope, chain)
CALCULATION AND APPROXIMATION OF RECOVERY LOADS (drag resistance, surface resistance , inclination resistance, line resistance, recovery forces in general - types and strength)
RECOVERY TRAIN CALCULATIONS (matching equipment ratings with setup and recovery load per vehicle GVM)
KINETIC RECOVERY CALCULATIONS (Effect of speed, loop distance, calculation of maximum kinetic forces, speed of flying recovery point, calculation of kinetic forces taking into account speed of stuck vehicle when it come lose with lowered speed of recovery vehicle)
EQUIPMENT (inspection - what to look for, ropes, straps, ratings, shackles, bridles, storage, cleaning and maintenance)
KINETIC SNATCH PROCEDURE (safety, signals, preparation, inspection, stuck reason, snatching, recovery period, bridle)
SPECIAL RECOVERY TECHNIQUES (obtain the knowledge of years experience in one day)
THEORETICAL ASSIGNMENT :: own time home work after lecture (approx. 1.5 hours)
(1). Determine the maximum force that can be developed by a kinetic recovery given the following:
Recovery Vehicle : GVM; Max. acceleration on the recovery track : 0 - 50km/h in 4 seconds;
Kinetic Rope length : 9 meter; max. stretch 30%
Parallel "S" loop between vehicles
(2). Determine the maximum recovery speed for a 1.5 meter loop distance required to recover a load of 2000kg assuming
(a) a smooth recovery with : stuck vehicle will come loose at an initial speed of 3 km/h, the speed of the recovery vehicle is reduced by 35% at the point of taking up the full load.
(b) a harsh recovery with : stuck vehicle will come loose at an initial speed of 0 km/h, the speed of the recovery vehicle is reduced by 90% at the point of taking up the full load.
(3). Determine the initial traveling speed of a recovery point that breaks under the tension of a snatch strap.
Assumptions : stiffness constant = k = 30kN/m, the strap was stretched 1.2 meter . The mass m of the recovery point, together with the shackle is 0.8kg.
PRACTICAL TASKS :: based on own vehicle and equipment (2.5 hours)
All loads below to be answered in kilogram.
(1). Inspect and determine strength of chassis for recovery purposes.
(2). Inspect and determine strength (WLL) of recovery points.
(3). Determine the maximum safe kinetic recovery force with vehicle and equipment on hand. Assume the recovery points of the second vehicle can handle the same recovery load.
(4). For the recovery vehicle, determine the maximum speed with a setup loop length of 1.5 meter not to exceed the safe load. Assume the recovery points of the stuck vehicle can handle the same recovery load.
(5). Determine an appropriate snatch strap/rope rating for your vehicle, and mention the reasoning behind it?
(6). Demonstrate how to clean a kinetic strap?
(7). Demonstrate how to inspect a kinetic rope/strap - what to look for.
(8). Measure the length of your kinetic strap and compare to label length, and comment.
EXPERIMENTAL TASKS :: we shall provide the load measuring instrument. ( 3 hours)
(1). Measure the force required to recover a vehicle stuck in sand to depth of tyre section height at all four wheels - flat surface.Compare this value with the theoretical approximation.
(2). Repeat (1) with the recovery done at (a) an incline between 5 - 10 degrees and at a decline between 5-10degrees. Compare again the actual value with the theoretical approximations.
(3). Determine the stiffness constant of a kinetic strap by stretching the strap to 3 different lengths, and measure corresponding forces. Use this value to determine load and max stretch and compare with label rating..
KINETIC SNATCH RECOVERY :: preferably to be done with kinetic ropes due to the shorter recovery period (2-3 hours)
Setup and perform 5 different snatch recoveries following safe and recommended procedures. Actual measurements can be done optional.
Certification :
This course is not accredited with any SETA, however, persons attending this course will get discount on US254154.
Certificates will be ready on 16 April 2013.
Certificate of Competence : 66% on assignments and practical; 80% on safety procedures and essential knowledge;
Certificate of Attendance : to all who have attended the course
To be collected at out offices, Jameson Ave 4, Door De Kraal, Bellville, unless arranged otherwise.
PURPOSE ::
(a) In-depth knowledge and skill is provided to perform a kinetic recovery with safety and confidence.
(b) to provide the candidate a thorough understanding of the forces involved in a kinetic recovery
(c) be able to approximate stuck forces and strength of recovery points and mountings
Don't get scared of the physics and easy maths used in this module. Formulas are given and principles are explained.
Duration : 1.5 days
DATE TIME AND VENUE
Thursday 11 Apr 2013 18:00 :: Theory : Will be announce later - Bellville area.
Saturday 13 Apr 2013 08:00 - 17:00 :: Practical : ATLANTIS DUNES
Cost : R1550.00 : Payable in advanced
Included : Use of 4x4 track, Training Manual.
Enrolment : Enrol Online here (restricted to 15 candidates)
(Candidates from other provinces who wishes to do the workshop in another region, can enroll online ABOVE, indicating the required area. If there is enough interest, a workshop will be arranged in that area, and enrolled candidates will be informed accordingly.)
What to bring with on Thursday 11 Apr 2013:
1 x Certified Copies of ID ; 1x Certified Copies of Drivers License; 2 x color passport size photos with name printed at the back ; black pen and writing pad, calculator. Refreshments will be served.
What to bring with on Saturday 13 Apr 2013:
4x4 Vehicle ; Vehicle's Owner Manual ; Tyre Pressure gauge; 12V Tyre Pump ; Spare wheel; Wheel spanner; Gloves; Any recovery equipment you may have - kinetic strap or rope (preferable), shackles, bridles ; 10meter measuring tape; black pen and writing pad, calculator, 2 liter drinking water per person; Picnic basket for lunch and refreshments for the day.
Working Documents :
Workshop Manual to complete; Training Manual
THEORY (4 hours) :: mathematical models to approximate real kinetic scenarios
CALCULATIONS ON STRENGTH OF MATERIALS (Tensile-, Yield-, Bearing-, WLL calculations, Strength HT bolts, Strength Chassis, Recovery points - design and determine strength, MBS of straps, ropes, wire rope, chain)
CALCULATION AND APPROXIMATION OF RECOVERY LOADS (drag resistance, surface resistance , inclination resistance, line resistance, recovery forces in general - types and strength)
RECOVERY TRAIN CALCULATIONS (matching equipment ratings with setup and recovery load per vehicle GVM)
KINETIC RECOVERY CALCULATIONS (Effect of speed, loop distance, calculation of maximum kinetic forces, speed of flying recovery point, calculation of kinetic forces taking into account speed of stuck vehicle when it come lose with lowered speed of recovery vehicle)
EQUIPMENT (inspection - what to look for, ropes, straps, ratings, shackles, bridles, storage, cleaning and maintenance)
KINETIC SNATCH PROCEDURE (safety, signals, preparation, inspection, stuck reason, snatching, recovery period, bridle)
SPECIAL RECOVERY TECHNIQUES (obtain the knowledge of years experience in one day)
THEORETICAL ASSIGNMENT :: own time home work after lecture (approx. 1.5 hours)
(1). Determine the maximum force that can be developed by a kinetic recovery given the following:
Recovery Vehicle : GVM; Max. acceleration on the recovery track : 0 - 50km/h in 4 seconds;
Kinetic Rope length : 9 meter; max. stretch 30%
Parallel "S" loop between vehicles
(2). Determine the maximum recovery speed for a 1.5 meter loop distance required to recover a load of 2000kg assuming
(a) a smooth recovery with : stuck vehicle will come loose at an initial speed of 3 km/h, the speed of the recovery vehicle is reduced by 35% at the point of taking up the full load.
(b) a harsh recovery with : stuck vehicle will come loose at an initial speed of 0 km/h, the speed of the recovery vehicle is reduced by 90% at the point of taking up the full load.
(3). Determine the initial traveling speed of a recovery point that breaks under the tension of a snatch strap.
Assumptions : stiffness constant = k = 30kN/m, the strap was stretched 1.2 meter . The mass m of the recovery point, together with the shackle is 0.8kg.
PRACTICAL TASKS :: based on own vehicle and equipment (2.5 hours)
All loads below to be answered in kilogram.
(1). Inspect and determine strength of chassis for recovery purposes.
(2). Inspect and determine strength (WLL) of recovery points.
(3). Determine the maximum safe kinetic recovery force with vehicle and equipment on hand. Assume the recovery points of the second vehicle can handle the same recovery load.
(4). For the recovery vehicle, determine the maximum speed with a setup loop length of 1.5 meter not to exceed the safe load. Assume the recovery points of the stuck vehicle can handle the same recovery load.
(5). Determine an appropriate snatch strap/rope rating for your vehicle, and mention the reasoning behind it?
(6). Demonstrate how to clean a kinetic strap?
(7). Demonstrate how to inspect a kinetic rope/strap - what to look for.
(8). Measure the length of your kinetic strap and compare to label length, and comment.
EXPERIMENTAL TASKS :: we shall provide the load measuring instrument. ( 3 hours)
(1). Measure the force required to recover a vehicle stuck in sand to depth of tyre section height at all four wheels - flat surface.Compare this value with the theoretical approximation.
(2). Repeat (1) with the recovery done at (a) an incline between 5 - 10 degrees and at a decline between 5-10degrees. Compare again the actual value with the theoretical approximations.
(3). Determine the stiffness constant of a kinetic strap by stretching the strap to 3 different lengths, and measure corresponding forces. Use this value to determine load and max stretch and compare with label rating..
KINETIC SNATCH RECOVERY :: preferably to be done with kinetic ropes due to the shorter recovery period (2-3 hours)
Setup and perform 5 different snatch recoveries following safe and recommended procedures. Actual measurements can be done optional.
Certification :
This course is not accredited with any SETA, however, persons attending this course will get discount on US254154.
Certificates will be ready on 16 April 2013.
Certificate of Competence : 66% on assignments and practical; 80% on safety procedures and essential knowledge;
Certificate of Attendance : to all who have attended the course
To be collected at out offices, Jameson Ave 4, Door De Kraal, Bellville, unless arranged otherwise.
KINETIC RECOVERY WORKSHOP
(soon : Winching Recovery Workshop)
(soon : Winching Recovery Workshop)
