Locate toilet room floor drains out of foot traffic below water closet partitions or between urinals. Specify galvanized beehive type roof and areaway drains. Where floor drains are roughed in for future use, cover with a flush plate and gasket for protection against fume leakage. Provide trap primers to retain trap seals on floor drains installed in areas where floors are not washed periodically or there is no regularly used water outlet to replenish trap seal. Do not make a general statement to install as required, where required, etc.
All horizontal drain runs to have cleanouts on the end of the run on every floor.
Main drain stacks must have cleanouts installed on each floor.