What kinds of safety signs are there on the construction site? What color are they represented by?

There are four kinds of safety signs on the construction site:

No sign. The color is red, indicating that some behaviors are not allowed or blocked.

Warning sign. The color is yellow, which makes people pay attention to possible dangers.

Command sign. The color is blue, indicating that it must be observed, and it is used to force or restrict people's behavior.

Indicating sign. The color is green, indicating the position or direction.

Precautions for construction safety on the construction site:

Before construction personnel enter the construction site, they must carry out education and assessment on construction safety and fire control knowledge, and employees who fail the assessment are prohibited from entering the construction site to participate in the construction.

When entering the construction site, you must wear a safety helmet, fasten your hat belt and use personal labor protection articles correctly.

Strictly implement the operating rules, and shall not command or operate illegally, have the right to refuse the instruction of illegal operation and have the responsibility to stop others from operating illegally.

Personal protective equipment must be worn correctly during construction work, and safety helmet must be worn when entering the construction site. Don't use fire without permission, and don't operate after drinking.

Slippers, high heels, barefoot or shirtless are not allowed to enter the construction site.

Hard-soled shoes should not be used for climbing.

On-site electricity consumption must be managed by special personnel, and a special distribution box must be set up at the same time. It is forbidden to connect and pull randomly, and implement the system of listing electricity, especially to put an end to illegal operation and prevent personal, line and equipment accidents.

Safe voltage below 36V must be used for construction site lighting. When not in use, all electrical appliances must be cut off at any time to prevent the equipment from burning out.

Where blowtorches, electric welding machines and necessary open flames are used, it is necessary to fill in the application for registration of using fire and designate special personnel to take care of it, and carry fire-fighting equipment with you to ensure the implementation of fire-fighting measures. When welding, special attention should be paid to check whether there are flammable materials below and make corresponding protection. After use, check that there is no fire before leaving.

Do not go to work without passing the safety education and training, and non-operating personnel are strictly prohibited from entering the dangerous area; Special operations personnel must hold a special operation qualification certificate.