2020-022 - Laserfiche WebLink

Home Browse Search

Work Order No. 31 6611 Avenue and 8th Street— Traffic Signalization B. Geotechnical Investigation: The geotechnical investigation will include four (4) Standard Penetration Test (SPT) borings to a depth of 35 feet using a procedure similar to the Standard Penetration Test outlined in ASTM D-1586. The SPT borings will be drilled at the four corners of the intersection in accessible locations as close as possible to the proposed mast arm foundations. The SPT borings will be sampled at 18 -inch or 24 -inch intervals to 10 feet deep and at 5 -foot intervals below 10 feet. Each sample will be removed from the sampler in the field and then examined and visually classified by our crew chief. Representative portions will be sealed and packaged for transportation to our laboratory for further analysis as required. Water level observations will be made in the boreholes during the drilling operation. For the purposes of this proposal, we have assumed that maintenance -of -traffic (MOT) will not be required to perform the soil borings. LABORATORY TESTING Routine laboratory visual classification will be performed along with specific classification tests deemed necessary (i.e., sieve analysis, Atterberg limits and organic contents). All laboratory tests will be performed in general accordance with applicable ASTM standards. ENGINEERING ANALYSIS AND REPORT Engineering analysis of all data obtained will be made to evaluate general subsurface conditions, and to provide the soil parameters listed above for structural verification of the standard FDOT mast arm pole design. C. Signalization Plans: The COUNTY desires to prepare traffic signalization plans associated with the 66th Avenue/ 8th Street intersection. It is understood that the proposed signalization improvements will consist of a mast arm traffic signal assembly at the subject intersection which will be designed to meet current IRC and FDOT standards. The plans will include the design and layout of proposed signal poles, signal heads, video detection, conduit, and pull boxes. The plans will include all call outs, controller timing chart, signal head details, sign details, controller notes, signal operating plan, overhead street name sign design details, pole schedules, tabulation of quantities. The set of plans will include the following sheets: key sheet; tabulation of quantities; general notes; plan sheet; sign work sheets (if necessary) and mast arm assemblies' data tables. Page 2 of 8