What is the size of a common bed in the south?

Bed sizes of various specifications are usually divided into single bed, double bed and crib. The standard size of a single bed is usually as follows: the width is mostly 120cm, 100cm,100cm, and the length is 200m, 190cm, 2 10cm,/kloc. Double bed has three standard sizes: width 200cm, 180cm, 1500cm, length 220cm, 200cm, 2 10 cm. If the room is larger, you can put a king-size bed. How to calculate the width of the bed: the width of a single bed is usually 2~2.5 times that of a supine shoulder, and the width of a double bed is generally 3~4 times that of a supine shoulder; The average shoulder width of adult men is 4 10 mm, so the width of a single bed should not be less than 800MM；; The width of double bed should not be less than 1230MM. How to calculate the length of the bed: The length of the bed refers to the distance between two bed boards or the inside of the bedstead. The calculation formula of bed length is: bed length = 1.05 times height (1775mm ~1814mm)+overhead allowance (about 100MM)+ foot allowance (about 50mm) ≈ 2000. How to calculate the bed height: the height from the bed surface to the ground. Generally consistent with the height of the chair, so that the bed has the function of sitting and lying. Generally, the bed height is between 400 and 500mm.