The Köppen climate classification divides climates into five main climate groups, with each group being divided based on seasonal precipitation and temperature patterns. The five main groups are A (tropical), B (dry), C (temperate), D (continental), and E (polar). Each group and subgroup is represented by a letter.
A building drainage is the lowest piping of the drainage system and gets discharge soil, water, and other wastes and is conveys t to the building sewers that s three feet outside the wall.
