htaccess and mod_rewrite codeigniter - .htaccess

Question

I am using codeigniter and below is my htaccess file. However, i want a single directory to be accessable outside of the codeigniter app via my domain.com/directory. the other directory is a forum not related to codeigniter. how would i set up a rule in htaccess? i dont have access to http.conf
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>

Answer 1

This should already work. RewriteCond %{REQUEST_FILENAME} !-d tells mod_rewrite to ignore actual directories, and RewriteCond %{REQUEST_FILENAME} !-f tells it to ignore actual files.

Answer 2

I use this to exclude any folder from being parsed to codeigniter framework as a controller.
So www.domain.com/images/ would run as normal folder, etc. There you can put your individual directives of htaccess. Best of luck!
RewriteCond $1 !^(folders_to_exclude_from_CI|images|css|assets|resources|robots\.txt)