Map requirements for 1.1?

[JGAN]

Hello AC commnunity,
I'm a little new to the map making biz :) well i want to make a map that will work in 1.1 . So far, the biggest size I can have that will work is 6, but i would like it to be bigger, like an 8. What are the map density requirements? Also, when I built on the size 6 map and lowered the floor, it became unplayable in all the modes beside coopedit.

Basically, what is the maximum length, width, height, and cube distances between pickups?


thanks,
{FsC}fragBike