Rod
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Everything posted by Rod
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"for arborists rigging, with dynamic loading, high wear, and dirty conditions, a design factor of 10 or greater is recomended" {the art and science of practical rigging ISA production} i'll belive the book thanks:thumbup:
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i do 45 mins every morning some of the lads do an hour
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how do you put more than one quote on sorry for not quoting you targettrees
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it doubles it weight every foot up to 4 foot then it has reached its maximum velocity which is why when blocking down you divide swl by 4 Also im using 2 blocks to reduce pressure on each block so instead of a single at 45kn the weight pressure from the rope is spread so if my maths are right using half the block (90 degrees insteasd of 180 degrees) would increase this to around 67.2kn per block? I think? If someone could tell me if im right or wrong please you cant increase the swl/wll you would be reducing or spreading the load
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1 Kn = 1000 Newtons or 225 pounds of force WWL or SWL is worked out by a safety factor of 10 so as already said 450Kg but that is only the maximum load it should be used on it dosn't account for force added when rigging if you are going to 'drop' pieces of wood on to it you need to devide swl by 4 this then gives you a maximum weight of wood to work with 112Kgs ish so a beech log of 20 inch diamiter aprrox 2 Ft long (this is if you are say blocking down the stem) if there was no drop i.e the piece was held from a high anchor and there was no slack in the rigging then you could hold 450 Kgs so the same log could be more like 10 Ft
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heres mine good:thumbup: but hot:sneaky2:
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LOL
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still the pulley dose state the rope size but i agree with you about changing gear etc i just use 16mm unless its v big then i get the 20mm out must admit though a smaller kit would be nice some times
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not telling you what to buy, buy what you need i think you should wait until you do your course then you will know what to buy
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click the ics link at the top they have a 13mm option http://www.iscwales.com/pdf/pulleys/arborist/RP050-51%20Small%20cast%20pulley.pdf Rpo 50 13mm Rpo 51 16mm
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have a quick look through a few on the net and see what the contain and their price then you'll know better yourself when you see it dont buy rubbish just coz its cheap:thumbup1: dose it come with all its paperwork for LOLER?
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An example of a matched system: 1. 20mm (3/4") polyester double braid rigging rope 10,000Kg BS 2. 22mm (7/8") polyester double braid dead eye sling 15,000Kg BS 3. 20mm arborist rigging pulley with 5:1 bend radius for the running rope and 3:1 for the dead eye sling 10,000Kg BS 4. System working load limit of 1000 Kg notice that the dead eye sling must be (at least) 1.5 times the strength of the rigging rope and that the pulley is the same mm as the rigging rope put it this way my kit works by this method which is how i was instructed! if you are buying a kit ask the shop for the manufacturers advice on creating a matched system then it will be right and last longer
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its my understanding that the pulley should fit the rope otherwise the rope is as peter sais "flattened" which reduces its strength and cycles to failure
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but it dosn't specify! just that you can use a chainsaw from a rope and harness:thumbup: try the 880 with the four foot bar on
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Ionnotus dryadus. stem at 5ft had listed 10mm toward the road in 6 months thats a shame:bawling:
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as above as far as i am aware your use of a chainsaw up a tree is sufficient to use a saw from the MEWP. but, if you dont have that there is a specific unit for chainsaw from a MEWP. clearly rigging is seperate, you'd need a rigging ticket and grounds man with the same or groundsman ticket but to use any saw from a mewp requires training to meet best practice as dose using the mewp its self!!!!! ps im pretty sure using a chainsaw up a tree covers you to use any saw up a tree
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what was the reason for the elm bashing?
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nice one remy:thumbup:
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alder burns just fine on my fire
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i use a 5M yale fire with a grigri which i find good as it can be let out slowly rather than the total release you seem to get with the grab depends what you want it for if you just need a second climbing line rope of any length is good i have a 10M as well which is great if your in a big wide tree also if you just have a little tree to do if you want it for blocking down then you need a wire core which is a totaly different thing IMO:confused1:
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is that not only for people who are employed?
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here's a little compilation of pictures vid that i made for playing at shows we did in the summer [ame=http://www.youtube.com/watch?v=RSTRSqmHBFU]YouTube - Eden Woodland Consultants Ltd[/ame]
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congratulations:thumbup: enjoy:biggrin:
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we had 34m bronto a few different times absouloutly brilliant the one we use comes with the driver but he stays on the ground. that said he would come in the cage if we wanted. they also had a special cage that could be fitted to the bucket protect him (keep him seperate) also he helped out when bringing branches off over a river by bringing the thing back over to the landing zone using the ground controls while we kept hold of the branches etc. very handy:thumbup: you do need lots of space to park them though:thumbdown:
