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upon survey maps or reports shall be based on a level loop or closure to a second benchmark. ❑ (b) Closure in feet must be accurate to a standard of plus or minus .05 ft. times the square root of the distance in miles. U. (c) All surveys and maps or reports with elevation data shall indicate the datum and a description of the benchmark(s) upon which the survey is based. ❑ (d) Minor elevation data may be obtained on an assumed datum provided the base elevation of the datum is obviously different than the established datum. (2) Horizontal Feature Accuracy: ❑ (a) Horizontal Control: All surveys and maps or reports expressing or displaying features in a publicly published coordinate system shall indicate the coordinate datum and a description of the control points upon which the survey is based. ❑ (b) Minor coordinate data may be obtained and used on an assumed datum provided the numerical basis of the datum is obviously different than a publicly published datum. ❑ (c) The accuracy of control survey data shall be verified by redundant measurements or traverse closures. All control measurements shall achieve the following closures: Commercial/High Risk Linear: 1 foot in 10,000 feet; Suburban: Linear: 1 foot in 7,500 feet; Rural: Linear: 1 foot in 5,000 feet; ❑ (d) When statistical procedures are used to calculate survey accuracies, the maximum acceptable positional tolerance, based on the 95% confidence level, should meet the same equivalent relative distance standards as set forth in 61G17- 6.003(3)(p)(2.)(c) F.A.C. ❑ (e) Intended Display Scale: All maps or reports of surveys produced and delivered with digital coordinate files must contain a statement to the effect of: "This map.is intended to be displayed at a scale of 1/_ or smaller". 61G17-6.004 Specific Survey, Map, and Report Requirements (1) As-Built/Record Survey: ❑ (a) Obtained field measurements of vertical or horizontal dimensions of constructed improvements so that the constructed facility can be delineated in such a way that the location of the construction may be compared with the construction plans. ❑ (b) Clearly shows by symbols, notations, or delineations, those constructed improvements located by the survey. ❑ (c) All maps prepared shall meet applicable minimum technical standards. 01025-56 Technical Specifications F:\Public Works\ENGINEERING DIVISION PROJECTS\1503-43rd Ave Swk_Airport Dr to 41st St\1-Admin\Bids\Bid Documents\Master Contract Documents\Technical Specifications.doc