This is a concept I used in Overdose quite a few times, before I give it out to more people to beta test I thought I would release the idea to ensure its not plagiarized.
This is a fix for ladders in jump maps, instead of worrying about climbing up the ladder heaps or accidentally breaking your legs on the fall down. Also as a bonus its also SO much quicker than climbing up a ladder
The brush work is simple, all it requires is the mapper to make a set of stairs with a width (x/y axis) of 1 unit(minimum) and the stairs height(z axis) of 16 units(maximum)
I've created a test map for mappers to check out how it works and how its made, the pk3 contains a .bsp and .map source
Check it out http://www.gotdelirium.com/maps/del_ladder_fix.pk3