What Does a Fence Erector Do?

A fence is a fence.

[hù lán]

The fence is

Fence General

Design guidelines

(1) The tolerance design concept should be adopted to properly handle obstacles in the safe side zone of the road;

(2) When the width of the safety clear zone on the side of the highway cannot be satisfied, it shall be handled safely according to the principle of setting up guardrails;

(3) The transition between different types of roadbed guardrails or between the roadbed guardrails and bridge guardrails should be carried out.

Design sequence

(1) Collect data on the horizontal and vertical alignment of highways, filling and excavation data, and the composition of operating vehicles, traffic volume, operating speed, and design speed;

(2) Collect or investigate the distribution of various obstacles in the safety net area on both sides of the highway and data that intersect with other highways, railways, etc .;

(3) Determine the anti-collision level of the guardrail and select the guardrail type.

Fence Setting Principles

Roadside fence

(1) Roadside guardrails must be provided on road sections where vehicles may leave the road that may cause two major accidents.

(2) Roadside guardrails must be provided on road sections that meet one of the following conditions, which may cause a catastrophic bicycle accident or a second major accident when the vehicle exits the road:

Sections within the prescribed range of slope slope and embankment height of Grade II and above highways;

There are sections of rivers, rivers, lakes, seas, swamps, fairways and other waters along the road.

(3) Roadside guardrails should be provided where roads that meet one of the following conditions are likely to cause major accidents when they are driven out of the road:

Sections of grades 2 and above that fall within the specified range of slope slope and embankment height;

There are lightings, cameras, variable information signs, traffic signs, road support walls, sound barriers, piers or abutments on upper-span bridges that are not safe for vehicles to pass through in the safe side zone of expressways and first-grade highways. Road section

Excavated sections of side roads of Grade 2 and above roads without cover plates and vehicles that cannot be safely crossed;

There are cliffs, deep valleys and deep trenches on the sides of the third and fourth grade roads.