How warnings work

I am doing warnings and bannings on my forum. You will not get a warning if you follow these rules:

1. No mean talking.
2. No rash talking.
3. Post in the right spot.
4. Don't act like an Admin.
5. No begging for a spot in a group. You need to sign up.
6. Have Fun!
7. No making more than 1 account.

These are if you get alot of warnings this will happen:

If you get 5 warnings you are banned for 14 days.
If you get 10 warnings you are banned for 28 days.
If you get 15 warnings you are banned for a month. (31 days)
If you get 20 or above warnings you are banned from this forum forever.