Of or relating to the third stage of psychosexual development in psychoanalytic theory, from about ages three to six, during which gratification is focused on sensations associated with the genital organs. The phallic stage is preceded by the anal stage and followed by the latency period. phalâ²liÂ·calÂ·ly adv.
Treads and Risers. The tread size (min 10ins / 25.4cm) is dictated by the average adult foot size, although it is not necessary to be able to fit your entire foot on a tread in order for walking up the stairs to be both comfortable and safe. The riser height (max 7Â¾ins / 19.7cm) is limited by the way in which we come down the stairs.
1 Riser-Tread formula: Sometimes the stair parameters will be something like riser plus tread equals 17â18 inches (432â457 mm); another formula is 2 times riser + tread equals 24.6 inches (625 mm), the length of a stride. 2  Thus a 7 inches (178 mm) rise and a 10.6 inches (269 mm) tread exactly meets this code.