Physical Feature Characteristics. 4.3.1.1 Data delivered as feature class (ESRI v9.3 File GDB format) in Iowa State Plane South, NAD 8 3 (XXXX 9 6 adjustment) with units in U.S. Feet. GeoComm is compliant. The street centerline layer developed and enhanced by GeoComm will provided to Scott County as an ESRI feature class in a an ESRI geodatabase. The GIS data layers will be projected in Iowa State Plane South, NAD 83 (XXXX 96 adjustment) with units in U.S. feet.
4.3.1.2 Road features represent a complete road inventory (regardless of road class). GeoComm is compliant. The final street centerline layer will include all roads within Scott County and municipalities in the county. The street segments will be attributed with appropriate codes depicting the road class. A resource depicting the road classes and desired codes must be provided by Scott County.
4.3.1.3 Topologically correct features (lines meet exactly, no overshoots/undershoots, no duplicate features, no extraneous nodes, etc). GeoComm is compliant. Using a series of QA/QC topology audits GeoComm will identify any topological errors in the street centerline layer. Audits will help to identify ◾ duplicate road segments ◾ overshoots/undershoots ◾ true intersections where roads are not broken ◾ boundaries (municipal and ESZ boundaries) where roads are not broken ◾ overpasses and underpasses where roads are broken but should not be ◾ incorrect line direction After identifying errors, GeoComm will update the street centerline to ensure it is topologically correct.
4.3.1.4 Curves are tangent and represented as true arcs. GeoComm is compliant. GeoComm will develop and/or update existing street centerlines to ensure curves are tangent and represented as true arcs.
4.3.1.5 Break features at jurisdictional boundaries (municipal boundaries, Emergency Service Zones). GeoComm is compliant. GeoComm will break and snap street segments where necessary to create topological accuracy and proper location of 9-1-1 addresses. Street centerlines will be broken at: ◾ emergency service zone boundaries ◾ municipal boundaries Breaking roads at these locations helps to ensure addresses locate in the correct community and correct ESZ boundary.
Physical Feature Characteristics. 4.4.1.1 Data delivered as feature class (ESRI File GDB format) in Iowa State Plane South, NAD 8 3 (XXXX 9 6 adjustment) with units in U.S. Feet. GeoComm is compliant. The address point layer developed and enhanced by GeoComm will provide to Scott County as an ESRI feature class in an ESRI geodatabase. The GIS data layers will be projected in Iowa State Plane South, NAD 83 (XXXX 96 adjustment) with units in U.S. feet.
4.4.1.2 Database contains an address point for every addressable structure or street level address. GeoComm is compliant. GeoComm will develop the address point layer based on resources provided by Scott County such as: ◾ Parcels ◾ Building footprints ◾ Aerial images ◾ And more Addresses will be entered into each address point when available in one of the resources provided. If desired, GeoComm will provide Scott County with field collection services to ensure that addressable structures which were missing from the available resources are included into the final address point layer. A base cost plus the daily cost for fieldwork is included in Section 5 Project Fee Schedule.
4.4.1.3 For single address structures, address point is placed on building (using orthophotography and/or building footprint features provided). GeoComm is compliant. GeoComm will place address points in the center of the available building footprints or on the center of the addressable structure based on aerial images for each single addressed structure.
4.4.1.4 Mobile homes will be individually identified. GeoComm is compliant. GeoComm will add an address point for each mobile home regardless of if it is individually addressed or if the entire mobile home park has one single address and lot numbers.
4.4.1.5 Multi‐unit structures
4.4.1.5.1 Where multi‐unit structures share same street address (e.g.0000 Xxxx Xx, Building A, 0000 Xxxx Xx., Xxxxxxxx X) place address point for each structure. GeoComm is compliant. GeoComm will develop an address point for each unit of a multi-unit structure which shares the same address and each unit has its own unit or building number. GeoComm will create a sub-address point layer which contains each individual unit point and the primary address layer will only contain the one point that is used for the main building.
4.4.1.5.2 Where units within a multi‐unit structure are assigned individual street addresses (e.g. a duplex addressed as 0000 Xxxx Xx and 0000 Xxxx Xx), place address point at approximate location of access point for each unit, ...
