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HIGHLINE
• ALSO KNOWN AS TELPHER / TYROLEAN• A rope or rope pulled tight across a chasmor
river to facilities the passage or removals patient or equipment back and forth or in one direction.
HIGHLINE
• ONE OF THE MOST DANGEROUS AND MOST DIFFICULT VERTICAL RESCUE
• INVOKE THE USE OF ADVANCED RIGGINGS SKILLS
• ARE ALMOST ALWAYS A LAST RESORT OPTION
HIGHLINES IN RESCUE
• IN ALL CASES, THIS TERMS REFER TO A ROPE LINE SUSPENDED FROM ONE POINT TO ANOTHER BETWEEN WHICH PEOPLE, RESCUE SUBJECTS, OR EQUIPMENT CAN BE MOVED
HORIZONTEL HIGHLINES
• SUSPENDED FRON TWO POINTS THAT ARE CLOSE TO THE SAME LEVEL
STEEP ANGLE HIGHLINES
• SUSPENDED BETWEEN TWO POINTS IN WHICH ONE IS AT A MUCH HIGHER LEVEL THAN THE OTHER.
USES OF HIGHLINES
• USED TO TRANSPORT RESCUERS, RESCUE OBJECTS, AND/OR EQUIOMENT ACROSS AN AREA THAT IS A BERRIER TO TESCUES.
1. TO BYPASS AN OBSTACLE USED TO CROSS A DEEP CANYON ORGORGE. 2. TO AVOID HAZARDOUS TERRAIN WOULD BE USED TO BRIDGE A SWIFTLY. FLOWING RIVER 3. TO AVOID DIFFICULT TERRAIN MIGHT BE SUSPENDED OVER AN AREA THAT CONTAINED LARGE BOULDERS OR THICK DEBRIS, WOULD BE DIFFCULT TO MOVE A LITTER. 4. FOR EMERGENCY EVACUATION. EVACUATE PERSONS FROM A HAZARD IN WHICH THEREIS THREAT OF INJURY OR DEATH, AND WHERE THERE IS NO OTHER PRACTICAL MEANS OF EVACUATION WOULD BE A FIRE IN A BUILDING.
ELEMENTS OF A HIGHLINE
• NEAR-SIDE ANCHOR• FAR-SIDE ANCHOR• MAIN LINE / TRACK LINE• LOWERING / BELAYS LINE• TAG LINE• PULLEYS ( carriage )• REEVE LINE ( ENGLISH/NORWEGIAN )• LOAD
NEAR- SIDE ANCHOR
• THE ANCHOR TO WHICH THE MAIN LINE IS INITIALLY ANCHORED.
• IN HORIZONTAL HIGHLINE BOTH MAIN LINE ANCHORS WILL BE SUBJECTED TO SIMILAR STRESSES.
• IN STEEP ANGLE THE UPPER ANCHOR WILL BE THE ONE MOST SUBJECTED TO STRESS.
FAR-SIDE ANCHOR
• THE ANCHOR TO WHICH MAIN LINE ROPEIS ATTACHED ONCE ROPE HAS GOTTEN ACROSS TO THE FAR-SIDE POINT.
• MUST BE STRONG AS NEAR-SIDE ANCHOR.
MAIN LINE / TRACK LINE ROPE
• LINE THAT SUPPORTS THE MAJOR OF THE WEIGHT OF THE LOAD.
• SHOULD BE OF A LOW-STRETCH DESIGN, SUCH AS STATIC KERNMANTLE.
LOWERING/BELAY LINE
• RUNS FROM THE NEAR-SIDE POINT AND IS CONNECTED TO THE LOAD, IT SERVES 2 PERPOSES.
• TO CONTROL THE SPEED OF THE LOAD THROUGH THE LOWERING DEVICE.
• TO HAUL THE LOAD.• BECAUSE OF THE SAG THE LOWERING LINE
WILL ACT MORE IN ITS FUNCTION OF A BELAY.
TAG LINE
• RUNS FROM THE FAR-SIDE POINT AND IS CONNECTED TO THE LOAD.
• TO BELAY THE LOAD.• TO HAUL THE LOAD.
PULLEYS
• TRAVELS ALONG THE MAIN LINE ROPE.• AS A CARIAGE.• WITH HIGHER LOADS TANDEM PULLEYS
CREATE LESS OF A BEND IN THE ROPE.• SINGLE CARRIAGE/DOUBLE CARRIAGE.
REEVE LINE
• ENGLISH REEVE / NORWEGIAN REEVE.• ACT AS LOWERING AND HAULING LINE
ENGLISH REEVE
NORWEGION REEVE
HIGHLINE LOADS
• ONE-PERSON LOAD• TWO- PERSON LOAD• LITTER LOADS- SPIDERS - AZTEK ( LITTER SCOOP ) - PERCELL - LITTER TENDER ATTACHMENT AZTEK / PIG TAIL (PRIMARY ATTACHMENT / SECONDARY ATTACHMENT - ETRIER
PROBLEMS OF HIGHLINE
• OPTENTIAL STRESS AND FAIRLURE OF EQUIPMNENTS,
• TIMEP CONSUMING.• GETTING INITIAL PERSONNEL AND ROPE
ACROSS.
DEERMINING THE AMOUNT OF SAG IN THE HIGHLINE
• A HIGHLINE SYSTEMS MST NEVER BE STRETCHED TIGHT AND THEN LOADED.
• THIS COULD RESULT IN OVER STRESSING AND FAIRLURE OF THE ROPE, ORTHER EQUIPMENT, OR THE ANCHORS.
THE TEN PERCENT RULE
• MEANS THAT FOR EVERY LOAD OF 100 POUNDS WITH 100 FEET OF SPAN IN THE ROPE THEN SHOULD BE A SAG OF TEN PERCENT.
EXAMPLE
1.200 POUND LOAD (1L) ON A 100 FOOT SPAN 1L x 100` x .10 = 10 % FOOT SAG REQUIRED.2. 200 POUND LOAD (1L) ON A 200 FOOT SPAN 1L x 200` x .10 = 20 % FOOT SAG REQUIRED.3. 400 POUND LOAD (2L) ON A 200FOOTSAPN 2L x 200` x .10 = 40 % FOOT SAG REQUIRED.