What floor is the b2 building?

B2 refers to the second floor underground.

B = basement, which means basement. Underground floors can usually be represented by "B+ numbers", with B 1 representing the negative first floor, B2 representing the negative second floor, and so on. In addition to indicating "Level, horizontal line", level can also indicate the "floor" of buildings, rocks, etc. Shopping malls are represented by underground b and above ground l.

There is another expression, "ordinal number+floor", which means that the floor is simple, but it should be noted that in Britain, Australia, New Zealand and other English-speaking countries, their first floor is not the first floor, but the ground floor, which is usually abbreviated as G in some shopping malls.

Introduction of elevator floor button recognition

1, B+ number

This is the most common underground floor representation, and B stands for basement, which means basement, such as B 1 (basement 1) B2 (basement 2).

2.LG+ numbers

Lg: The ground floor means underground. LG 1 is the basement, and LG2 is the basement.

3.p+ numbers

P is the abbreviation of Park, and the P plus sign means underground parking lot, which is generally used in hotels or guesthouses. Similar to b addend, it means several underground floors. Basement 1: the first floor of the park (p1); Underground floor 2: Park floor 2 (P2); P without numbers alone may be the so-called "Penthouse".

3、M

Sometimes we see M, but we have different opinions about the meaning of this letter. One argument is that foreigners think the number 13 is unlucky, and m is 13 in the alphabet, so m is used to refer to the layer 13. Some people say that M means mezzanine, mezzanine.