I have a curious question about the seat height recommendation on fixed grip lifts. The signs we have posted say seat height is 16" to 18" +/- . Posted signs are required by ANSI-B77 but where did the numbers come from?
Who came up with this as the best idea for height & what was the reasoning behind it? Is it printed? (I have googled for days & can't find a thing!) Also, do mosts ski areas also use these numbers for their chair heights?
Thank you in advance for any help!
1
Carrier Height Standards
Started by LiftOperations, Dec 23 2010 09:30 PM
6 replies to this topic
#2
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Posted 24 December 2010 - 05:38 AM
the only number I can find is this:
'For unloading skiers on a snow surface.... the chair height shall not exceed 22 inches or 560 mm'
ANSI B.77 3.1.1.9.2
We use 20 inches as 22 is a bit much. We've found that 18 inches is low enough to pinch snowboard highbacks and taller ski boots.
'For unloading skiers on a snow surface.... the chair height shall not exceed 22 inches or 560 mm'
ANSI B.77 3.1.1.9.2
We use 20 inches as 22 is a bit much. We've found that 18 inches is low enough to pinch snowboard highbacks and taller ski boots.
Member, Department of Ancient Technology, Colorado chapter.
#3
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Posted 24 December 2010 - 01:21 PM
The only thing that ANSI requires I believe is that the loading height be posted and it be no greater than the 22inches that liftmech mentioned. At Snowbird in the past for example the boards that told you what the loading height was just a board that had a white board space for them to write in whatever the loading height was that day on the sign. Again as long as you're not over the 22inch mark I think the ANSI requirement is just to have whatever the height is posted. It may be that folks have just figured out 18/20/ whatever inches is the optimal level and thus signs are made for that one height and the resort just makes sure it's close to that height.
#6
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Posted 29 December 2010 - 08:16 AM
The loading seat height sign requirement can be found in Annex D "signs" in your ANSI book. The reason for the sign is that adaptive skiers need to know the measurement to facilitate loading. We use 18" + or - 2" on our signs, but tend to keep the load ramps right at 19" or 20" except our one beginner lift that sees lots of little kids, which we keep right at 18", or at least they are supposed too.
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