[edit on Wikidata] In animal anatomy, the notochord is a flexible rod made out of a material similar to cartilage. If a species has a notochord, it is, by definition, a chordate. The notochord lies along the anteroposterior (head to tail) axis, is usually closer to the dorsal than the ventral surface of the animal, and is composed of cells derived from the mesoderm.
The standard toilet is 14-15 inches high measured from the top of the bowl to the floor. (Measure with the seat up) Some people may prefer a taller bowl which can go as high as 19â. This height is great for taller people and also those that have physical challenges to deal with.
Toilets are available in 10, 12, or 14 rough in sizes. 12 is the most common. Distance from the drain to the wall A minimum of 15 inches off the finished side wall. and a minimum of 12 inches of the finished back wall. However, 18 side clearance is the international standard for wheelchair and assisted toilet seating thereby providing more manuevering room; it also feels mor comfortable for larger people.