The color steel retaining wall constructed on site should be solid, stable, clean and beautiful, and color strip cloth, bamboo fence and solid clay brick should not be used. Red light warning should also be provided for municipal road works. Color steel plate is suitable for deep foundation pit support and densely populated area. The wall of construction site is installed according to the design standard, and the overall effect is far more than that of brick wall. The appearance is smooth and not easy to deform and fade. The installation of advertising screen is simple, so it is an ideal wall material.The difference between the retaining wall of a construction site and that of a semi enclosed project will vary depending on the construction site and the situation. All construction works shall be closed. The main roads or congested roads in urban areas shall not be less than 4 m and the rest shall not be less than 1.8 M. Semi closed is a common structural form in municipal engineering. The bottom of concrete pavement column is welded with 150 mm 230 mm 5 mm steel plate, and the steel plate is anchored by 4 13 mm 10 expansion bolts. The wall with building area and living area shall not be less than 2m in urban area, 1.8m 4 in other places, the height of color steel retaining wall shall not be less than 2.5m, and the column spacing shall not be less than 3.6m. Wind resistance calculation shall be carried out for retaining wall. The color steel guardrail (color steel guardrail) is mainly used for a long time - it is economical to use it for more than half a year. It is cost-effective to use it for more than one year, and it is cost-effective to have PVC guardrail. Widely used environment: color steel guardrail (color steel guardrail) is windproof, rainproof and anti-collision. It is mainly used for anti-collision on both sides of the road, which is not easy to be damaged and beautiful.