On Sun, 22 Nov 2020 11:19:07 +0000, No Name
wrote:


I have a 3 section ladder too myself that is 4.25 m when closed

That would nearly be long enough for my needs in one section. ;-)

and
10.63 m when fully extended.

Whoa, that sounds pretty long. Fireman? ;-)

Now you are supposed to have a minimum of 4 rungs of overlap between
each section, so far so good....

But when my hieght is 1.83 and with extended arms adding another 0.8m
giving a maximum reach from the ground to push each section of ladder up
by 2.3 m.

And that's still not always easy, especially on the second section.

So if one extends each section when resting up against the wall, thats a
max of 4.25 m + 2.3 m + 2.3 m = 8.85 m.... which is almost 2 m of 10.63
m fully extended.

That raises an interesting point .... of is there a sweet spot re
ladder length that 'most people' (likely to be doing such things)
could realistically handle?

As you say, 2.3m plus the 4 rungs worth you lose?

The only way I can see of reaching that full 10.63 m is to lay the
ladder on the ground and then extend it and then upend the fully
extended ladder which is actualyl quite dangerous to do on your own.

Or even with help if you aren't reasonably strong (or there is a
breeze blowing)? ;-)

Some ladders do have a pulley system but they do not seem all that common?

No, I was thinking that and how much easier it should make it. I say
'should' because like all things I'm guessing there would be some
compromises ... like, do the pulleys act in the middle of the ladder
or do you have one each side (to keep it extending straight)? Do they
latch in a different way?

Cheers, T i m