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❑ (c) All surveys and maps or reports with elevation data shall indicate <br /> the datum and a description of the benchmark(s) upon which the <br /> survey is based. <br /> ❑ (d) Minor elevation data may be obtained on an assumed datum <br /> provided the base elevation of the datum is obviously different than <br /> the established datum. <br /> • (2) Horizontal Feature Accuracy: <br /> ❑ (a) Horizontal Control: All surveys and maps or reports expressing or <br /> displaying features in a publicly published coordinate system shall <br /> indicate the coordinate datum and a description of the control points <br /> upon which the survey is based. <br /> ❑ (b) Minor coordinate data may be obtained and used on an assumed <br /> datum provided the numerical basis of the datum is obviously <br /> different than a publicly published datum. <br /> ❑ (c) The accuracy of control survey data shall be verified by <br /> redundant measurements or traverse closures. All control <br /> measurements shall achieve the following closures: <br /> Commercial/High Risk Linear: 1 foot in 10,000 feet; <br /> Suburban: Linear: 1 foot in 7,500 feet; <br /> Rural: Linear: 1 foot in 5,000 feet; <br /> ❑ (d) When statistical procedures are used to calculate survey <br /> accuracies, the maximum acceptable positional tolerance, based on <br /> the 95% confidence level, should meet the same equivalent relative <br /> distance standards as set forth in 61G17- 6.003(3)(p)(2.)(c) F.A.C. <br /> ❑ (e) Intended Display Scale: All maps or reports of surveys produced <br /> and delivered with digital coordinate files must contain a statement <br /> to the effect of: "This map is intended to be displayed at a scale of <br /> 1/ or smaller". <br /> 61G17-6.004 Specific Survey, Map, and Report Requirements <br /> (1) As-Built/Record Survey: <br /> ❑ (a) Obtained field measurements of vertical or horizontal dimensions <br /> of constructed improvements so that the constructed facility can be <br /> delineated in such a way that the location of the construction may be <br /> compared with the construction plans. <br /> ❑ (b) Clearly shows by symbols, notations, or delineations, those <br /> constructed improvements located by the survey. <br /> ❑ (c) All maps prepared shall meet applicable minimum technical <br /> standards. <br /> ❑ (d) Vertical and horizontal accuracy of the measurements made shall <br /> be such that it may be determined whether the improvements were <br /> constructed consistent with planned locations. <br /> (END OF SECTION) <br /> Appendix A-As-Built Spec <br /> F:\Public Works\ENGINEERING DIVISION PROJECTS\1760 Victor Hart Sr.Complex Drainage Improvements\I-Admin\Bids\Bid <br /> Documents\IRC-1760 APPEN A 20180810.doc <br />