Maintenance standard of height limit protective frame

Maintain standard vertebrae with height-limiting protective frame;

1, with complete structure and safe and reliable connection.

2. The height limit and width limit signs are complete, intact and clear.

3. Does the painting not exceed 25cm? Local corrosion.

Standards for setting height-limiting protective frames: firstly, set height-limiting signs and height-limiting portal frames to limit the passage of vehicles at a certain height and avoid damaging the bridge. Not how many meters of clearance below. Generally, the height limit of tractor passage is 2.7m, that of automobile passage is 3.5m, and that of fire truck is 4.1m..

The height limit protective frame of bridge and culvert should focus on the following contents: whether it is intact, missing, deformed or damaged; Whether the height limit sign is complete and intact, and whether the sign is accurate.