Who can tell me some more about proven technical architectures for the separation of the front-end and backend in Zend Framework.

Is the following directory structure a good idea?

################################################## ##
/ROOT/frontend/application/
/ROOT/frontend/application/configuration/
/ROOT/frontend/application/modules/
/ROOT/frontend/tmp/
/ROOT/frontend/tmp/cache/
/ROOT/frontend/tmp/logs/
/ROOT/frontend/tmp/sessions/
/ROOT/frontend/tmp/view_compiles/
/ROOT/frontend/www/
/ROOT/frontend/www/images/
/ROOT/frontend/www/javascript/
/ROOT/frontend/www/css/
/ROOT/frontend/.htaccess
/ROOT/frontend/.index.php (bootstrap)
################################################## ##
/ROOT/backend/application/
/ROOT/backend/application/configuration/
/ROOT/backend/application/modules/
/ROOT/backend/tmp/
/ROOT/backend/tmp/cache/
/ROOT/backend/tmp/logs/
/ROOT/backend/tmp/sessions/
/ROOT/backend/tmp/view_compiles/
/ROOT/backend/www/
/ROOT/backend/www/images/
/ROOT/backend/www/javascript/
/ROOT/backend/www/css/
/ROOT/backend/.htaccess
/ROOT/backend/.index.php (bootstrap)
################################################## ##
/ROOT/library/
/ROOT/library/Zend/
/ROOT/.htaccess
################################################## ##