Toilet dimensions and clearances (same for bidets). These measurements also apply to bidets. Standard toilet fixture size â The standard depth of a toilet seat from hinges to the edge is 16 inches (40.5cm). If you get an elongated model this will be slightly longer â more like 18 inches or 46cm.
Definition of Quatrain. A poem, unit or stanza of four lines of verse, usually with a rhyme scheme of abab or its variant, xbybâ. âThe rhyming fourâline groups that make up the first eight or twelve lines of a sonnet are also known as quatrainsâ.
The change in tone between the  octave and the sestet is called a turn, or a volta..       The Shakespearean (also called an  English) sonnet is composed of four  quatrains (of four lines each) and a concluding couplet  (two lines). The rhyme scheme is as follows: abab cdcd efef  gg. Each quatrain serves to develop an element or a facet  of the problem.    For example, a sonnet about the transience of beauty might have one  quatrain about the beloved's charms, one comparing her to the  seasons, and one about how she will eventually die.