standard ironing board cover_table cloth

The location of a sewer manhole must be carefully considered to ensure that the drainage system is effective and easy to maintain.^[14][15] According to design standards, the distance between two manholes is typically between 7 and 20 meters, depending on the specific characteristics of the project.^[16][17] In cities, the distance is 20 meters per manhole,^[18] while in industrial or commercial settings it is 10-15 meters per manhole.^[19][20] The distance between manholes in homes or restaurants is typically 7-10 meters.