§ 7. GIS/survey requirements.

Coordinate System.

AutoCAD 2010 (or higher) with water, sanitary sewer, paving, grading, storm sewer. The CAD file of project should be referenced with the NAD_1983_StatePlane_Texas_North_Central_FIPS_4202_Feet projected Coordinate System.

Markers.

1.

Markers consisting of minimum three-eighths-inch diameter steel rods at least twenty-four inches long with caps identifying responsible surveying firm or RPLS number shall be placed at all:

a.

Lot and block corners (wherever a lot line bearing changes);

b.

Intersection points of alley and block lines;

c.

Curve and tangent points along block, lot and right-of-way lines within the subdivision; and

d.

Right-of-way dedications.

Monuments.

1.

Three dimensional coordinates, reported as state plane coordinates, shall be established using the city's monumentation system and using the city's combined scale factor. The coordinates shall be noted on the plat monuments shall be markers and installed at locations shown on the plat.

2.

Subdivision Monumentation.

a.

At least two markers shall be placed at property corners in addition to at least two monuments at opposing ends of the property.

3.

Capital Improvements Project Monuments.

a.

Found existing right-of-way monuments, survey markers, or property corners, and proposed monuments shall be shown on the construction drawings and located by station and offset, right or left from the control line, base line or center line, or by northing and easting.

4.

If new construction will damage, destroy, or alter existing survey markers, monuments, or property corners, they must be reset prior to final acceptance.

5.

Prior to final plat acceptance, all required monuments must be found and reset if damaged during construction.

6.

The surveyor will provide two monuments acceptable to the town and establish grid coordinates for the monuments in reference to the Town of Little Elm GPS monuments.

7.

Elevations will be established on the two monuments on the vertical datum in reference to the Town of Little Elm GPS monuments.

(Ord. No. 1444, § 2(Att. A), 3-6-2018)