Know the role of zinc steel guardrail at ordinary times

Know the role of zinc steel guardrail at ordinary times, as for the problems that should pay attention when installation may not understand. Guardrail installation should also pay attention to the wire mesh fence. 1. In all the activity end of the fence, shall be in accordance with the requirements of drawings to anchor, it is included in the median opening two rows of guardrail collection terminal, median guardrail on the abutment free end. 2. All anchor combination, including wire rope should be galvanized processing, tighten, anchoring combination of damage should be repaired. 3. Want to install the entire length of guard rail, screw down the stitching thread tied and curing concrete pile foundation after 3 days later, to tighten the anchor combination. Metal shim should be used to avoid tight during the cause of damage of steel wire rope. 4. End of guardrail processing; The spread of the guardrail layout section of the end shall be according to the drawings requirements. "Introducing side" of the guardrail should show "eight" glyph, "end" should be keep in parallel with the edge of the pavement. Form a guardrail end special section, to connect median guardrail openings at both ends. Guardrail installation problems which should be paid attention to, there are the following: 1. The columns should not be any visible deformation caused by the scoring method. Excessive damage any pillar should be removed, and use good by the contractor is responsible for the replacement. Considered acceptable by supervision engineer damaged pillars, required in cold galvanizing compound repair. 2. Paving cement concrete, asphalt, concrete or other in premixed asphalt material set ground pillar, column pit should be back to 50 mm, the rest with the same pavement material backfill and compaction, should reach supervision engineer to fill in below the surface in satisfaction. Pillar 3. Buried, will post into to the depth indicated in the drawings. Where can't into the pillars, set column column should excavation pit, the excavation depth of net should reach the drawings referred to in depth. Backfill soil unless there are other rules, or layered filling cement should use good material. Each layer of no more than 150 mm, strengthen to the ground. Compaction of backfill soil density is not less than the density of adjacent undisturbed soil, rock column in the hole, application of aggregate to the backfill. 4. The parapet of the connection bolts and stitching to tighten bolts. Use oval screw hole to adjust the guardrail, should form a rule, smooth line, without any bump ups and downs. Fence panels on the surface of the top whole lines should be consistent with the road pavement flat vertical curve lines. 5. The installation of the fence panel and should not be any damage. wire mesh fence www.jtwiremesh.com, because of the galvanized coating application to repair. 6. Zinc steel guardrail split joint installation should comply with the relevant specification requirements.

1 48 points in the middle of the night of yesterday

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