What letter does the elevator use to indicate the underground floor?

In the elevator, most underground floors are indicated by the letter B.

In the elevator, most underground floors are represented by the letter B, and the negative floor of the elevator button is represented by B 1. B is the initials of basement, which means basement.

1, b is the abbreviation of basement, which means "basement, the bottom floor of a building", so b plus numbers is often used to represent underground floors.

2.F refers to the floor, which means "floor", and the number of floor +F indicates the floor. For example, the third floor is the third floor (3F). B+ digital floor, indicating several underground floors, such as the underground floor (B 1).

3.L or G stands for the lobby, the first floor, and the first floor in the United States is often represented by G or L, G stands for the ground and L stands for the lobby.

4, P+ digital floor, indicating several floors underground, P is the abbreviation of Park, and P+ digital means underground parking lot, which is generally used in hotels or guesthouses. It's a bit like b-plus, which means several floors underground. For example, the basement is the first floor of the park (P 1).

What types of elevators are there?

1. It can be divided into passenger elevators, freight elevators, medical elevators, sundries elevators, sightseeing elevators, vehicle elevators, ship elevators, construction elevators and some special-purpose elevators.

2. According to the driving mode, it can be divided into AC elevator, DC elevator, hydraulic elevator, rack and pinion elevator and spiral elevator.

3. According to the classification of speed, it can be divided into low-speed ladder, medium-speed ladder, high-speed ladder and ultra-high-speed ladder.

According to the classification of drivers, there are two kinds of elevators with drivers and elevators without drivers.

5. According to the control mode, it can be divided into handle switch control elevator, button control elevator, signal control elevator, centralized control elevator, parallel control elevator and elevator group control.