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❑ (d) Minor elevation data may be obtained on an assumed datum provided the <br /> base elevation of the datum is obviously different than 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 indicate <br /> the coordinate datum and a description of the control points upon which the <br /> survey is based. <br /> ❑ (b) Minor coordinate data may be obtained and used on an assumed datum <br /> provided the numerical basis of the datum is obviously different than a <br /> publicly published datum. <br /> ❑ (c) The accuracy of control survey data shall be verified by redundant <br /> measurements or traverse closures. All control measurements shall achieve <br /> 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 accuracies, the <br /> maximum acceptable positional tolerance, based on the 95% confidence <br /> level, should meet the same equivalent relative distance standards as set <br /> forth in 61G17- 6.003(3)(p)(2.)(c) F.A.C. <br /> ❑ (e) Intended Display Scale: All maps or reports of surveys produced and <br /> delivered with digital coordinate files must contain a statement to the effect <br /> of: "This map is intended to be displayed at a scale of 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 of <br /> constructed improvements so that the constructed facility can be delineated <br /> in such a way that the location of the construction may be compared with the <br /> construction plans. <br /> ❑ (b) Clearly shows by symbols, notations, or delineations, those constructed <br /> -improvements-located by the survey.— <br /> ❑ (c) All maps prepared shall meet applicable minimum technical standards. <br /> ❑ (d) Vertical and horizontal accuracy of the measurements made shall be such <br /> that it may be determined whether the improvements were constructed <br /> consistent with planned locations. <br /> (END OF SECTION) <br /> 01025-9 Technical Specifications <br /> F;\Public Works\ENGINEERING DIVISION PROJECTS\1123 43rd Ave Sidewalk Improvements 26th St.to Airport Dr West\Admim\bid <br /> documents\Master Contract Documents\Technical Specifications.doc <br />