What is the safe distance in a construction project?

The safety distance is the distance between the front of the vehicle and the rear of the vehicle in front. When driving on a highway and the speed of the vehicle is more than 100 km/h, the safe distance should be more than 100 meters. When the speed of the vehicle is above 60kmh, the safe distance should be equal to the speed; For example, at a speed of 80 km/h, the safe distance between the vehicles is 80 meters.

When the speed of the vehicle is about 50km h, the safe distance of the vehicle is not less than 50 meters. When the speed is less than 40kmh, the safe distance of the vehicle should not be less than 30 meters.

There is no absolute concept of safe distance, it depends on the situation. Generally speaking, the faster and heavier the vehicle, the longer the interval required for a safe distance. The safe distance can also be affected by many other factors, such as weather conditions and light intensity.

Driver vision, braking equipment, road conditions, etc. When the general speed is more than 100kmh, the safe distance between the car is more than 100 meters.

The safety distance between the earthwork excavation and the original building is related to the excavation depth, assuming that the excavation depth is 5 meters, according to the building cliff construction code: it should be calculated by more than 2 times.

Because the other party is a tower crane, there is activity, for the sake of safety, the use of 3 times the value, that is, more than 15 meters is good, and more than 2 meters of foundation pit, must take reinforcement measures for the other party's facilities, and necessary safety measures; The excavation depth is more than 5 meters, and there is a tower crane foundation, for this working condition must prepare a special plan and pass the expert certification.

The calculation formula of foundation pit excavation is as follows:

1. No slope and no retaining plate: the foundation pit at this time is a cuboid or cylinder.

1) When it is a cuboid: digging foundation pit engineering quantity = (a + 2c) (b + 2c) h (2) when it is a cylinder: digging foundation pit engineering quantity = r * r * h2, grading: the foundation pit at this time is a prism or round platform.

1) When it is a prism: the amount of excavation of foundation pit = (A + 2C + Kh) (B + 2C + Kh) H + 1 3 K * K * H * H * H

2) When it is a round platform: the engineering quantity of digging foundation pit = 1 3 h (r*r + rr + r * r).

Generally speaking, it is related to the depth of excavation, so consider it as 1:1, and be safe.

Keep a safe distance between the construction area and the living area. However, there is no specific rule for safe distancing.

According to the "Regulations on the Administration of Work Safety in Construction Projects".

Article 2 In the territory of the People's Republic of China, engaged in new construction, expansion, reconstruction and demolition of construction projects and other related activities, as well as the implementation of supervision and management of construction project safety production, must comply with these Regulations.

The term "construction project" as used in these Regulations refers to civil engineering, construction engineering, installation of pipelines and equipment, and decoration projects.

Article 29 The construction unit shall set up the office and living areas and the operation area at the construction site separately and keep a safe distance; The location of office and living areas shall meet safety requirements. Employees' meals, drinking water, resting places, etc., shall comply with hygiene standards. The construction unit shall not set up a collective dormitory for employees in a building that has not yet been completed.

Temporary buildings erected at the construction site shall meet the requirements for safe use. The prefabricated mobile house used at the construction site shall have a product certificate.

Article 29 of the Regulations on the Administration of Work Safety in Construction Projects is not stipulated that the construction unit shall set up the office, living area and operation area of the construction site separately and keep a safe distance; The location of office and living areas shall meet safety requirements. Employees' meals, drinking water, resting places, etc., shall comply with hygiene standards. The construction unit shall not set up a collective dormitory for employees in a building that has not yet been completed.

The reference amount of the safety distance is not clearly indicated in the regulations, and it is sufficient for individuals to understand that the safety requirements are met (including requirements for falling objects, fire and explosion protection, etc.).

According to the "Environmental and Health Standards for Construction Sites" and JGJ146-2004, "the construction area of the construction site should be clearly divided from the office and living areas, and corresponding isolation measures should be taken". However, there is no specific rule for safe distancing.

In addition, Article 29 of the Regulations on the Administration of Work Safety in Construction Projects also stipulates that a safe distance should be maintained between the construction area and the living area. However, there is no specific rule for safe distancing.

Generally, we are about 15 meters away during construction.

Article 29 of the Regulations on the Administration of Work Safety in Construction Projects The construction unit shall set up the office, living area and operation area of the construction site separately and keep a safe distance; The location of office and living areas shall meet safety requirements. Employees' meals, drinking water, resting places, etc., shall comply with hygiene standards. The construction unit shall not set up a collective dormitory for employees in a building that has not yet been completed.

The reference amount of the safety distance is not clearly indicated in the regulations, and it is sufficient for individuals to understand that the safety requirements are met (including requirements for falling objects, fire and explosion protection, etc.).

There are two types of safe distances between the construction site and the surrounding buildings:

Type 1: The safety distance of the equipment when the power is not interrupted, and the specified values are as follows: 10kV and below.

Type 2: the safety distance between the normal activity range of the staff and the live equipment, which considers the maximum spatial position that the staff may move in the normal work, and the safety distance that must be maintained for the live equipment. Its specified value: 10kV and below.

1. The minimum safety distance of AC voltage:

The minimum safe distance of 10kV and below is meters.

The minimum safe distance for kV is meters.

The minimum safe distance of 63 (66) 110kv is meters.

The minimum safe distance of 220kV is meters.

The minimum safe distance of 330kV is meters.

The minimum safe distance of 500kV is meters.

The minimum safe distance of 750kV is meters.

The minimum safe distance of 1000kv is meters.

2. The minimum safety distance of DC voltage:

The minimum safe distance of 50kV is meters.

The minimum safe distance of 500kV is meters.

The minimum safe distance of 660kV is meters.

The minimum safe distance of 800kV is meters.