Monitor the leds and control specifications of the standard

1 page size and support mode is determined, dealing with the same type of support structure group logo in a reasonable manner to reduce the different layout of control rod and the specifications of the support structure types; 2 the design wind speed and wind load calculation of logo should be adopted for the flat region distance

1. In determining the layout size and supporting method, deal with the mark of the same type of retaining structure reasonable classification and grouping, reduce the different arrangement of monitoring pole and the specifications of the supporting structure type;

2 for wind load calculation in the design wind speed, the logo should be analyzed to calculate the average maximum wind speed of the region 10 m high open ground, once every 50 years and once every 10 minutes. For lack of wind speed observation data area, after check, the scene investigation can use weather stations of the nation's basic wind speed and wind pressure value of the related data, but should not be less than 22 m/s. 3. Structure design should be based on bearing capacity limit state and serviceability limit state, and shall meet the structure and technical requirements. 4 important coefficients of the structure of the logo can according to the grades of the following two options: 1) Cantilever on highways and main roads and door type logo, its structure is the important factor for gamma; o = 1. 02) In other types of highways and highway signs, and in the other grades city road sign, has the structure importance coefficient of gamma; o = 0. 95