What does it take to do this one?  Walls from about 16' to over 24'

Block to be Amvic 6" core.  Openings not shown.

Little bit more detail would be helpful...

The 16'8 is that clear or is there a floor system in there somewhere? the 24'8, is there a floor in there somewhere?

If no floor system I would build and pour the 16'8 (after reviewing with the EOR), set up a tall wall system and complete the balance.

If floors are involved, build and pour to each floor system...safety reasons

Gene: This link may or may not work, but if you google Nudura Tall Wall, you will find the link.
There are other methods, but this is very efficient and safe.

http://wcm.pavliks.com/WCMAdmin/images/wwwnuduracom/PDFs/07_tall_wall.pdf

I have been on several commercial projects with walls up to 40' tall where we used step up scaffolding. On some projects that were not as big we would add a footplate to the top of a 12' arrx brace to stack another 12' brace on top of that and add an extension in the kicker. Both ways work well, but you get more mobility with the step up scaffolding. My old boss, Jim Deering owns a lot of the step up scaffolding and is very knowledgable with tall wall projects. If you would like to speak with him his number is (661) 714-3844.

The safe way is to pour it all to 12' with the bar at lest 2' for you lap.
 I don't know your skill level or your crew's.
This is not a diy first pour with scc.
 I see that I could do it all at once if I needed to but why?
A cold joint at 12 ' is just as strong as monolithic pour, and hell of a lot easer.

Depends on your openings how high you want to pour it, ie. cold joints in lintels
Most likely pour all to 16'8 plate height, then use a scissor lift to complete and pour the rest, using your 16 ft. strongbacks half on the poured wall, half outlooking upwards, bracing on the "outside"...turnbuckle extensions are easily fabricated for about any system you have/want to use but hardly will be needed if you get the first pour perfect.
Or do the tall wall scaffold as Chris said, if its handy.

irnivek, I like your approach.