"GIS Data Update and Maintenance, Edmond, Oklahoma"
Augmenting CEDRA's Research and Development Division is CEDRA's Professional Services Division which has performed consulting projects throughout the U.S. CEDRA's Professional Services Division offers consulting services for a multitude of applications. These applications can pertain to assisting clients implement CEDRA software or can be totally non-CEDRA software related consulting projects. CEDRA staff is highly proficient in GIS Analysis, Data Capture, Data Conversion, Map Production and Application Development be it Desktop or Server based. Presented below are brief descriptions for a few projects CEDRA has been involved with. These projects involve applications such as parcel mapping, routing, data conversion, application development, data maintenance, data capture and modeling to name a few.
Click on this link to read about a Case Study that describes the type of services The CEDRA Corporation is able to provide.
GIS Data Update and Maintenance, Edmond, Oklahoma
The CEDRA Corporation's work with the City of Edmond, OK involves the data collection and data maintenance of the City's (a) parcels, (b) easements, (c) streets, (d) zoning and planning districts, (e) wastewater sewer system and ancillary facilities, (f) water supply and distribution networks and ancillary facilities, (g) storm water sewers, and (h) annotation GIS databases.
In maintaining the utilities, field GPS survey work is performed by a local surveying firm to locate the features in the field after which the survey data is imported into City's GIS, which is in a local state-plane coordinate system. Once the field information has been imported, as-built information is assigned to the surveyed features and introduced into the database. In addition, any features that could not be field surveyed (pipe bends, tees, water and sewer lateral connections, etc.) are introduced by geometric means into the database with their appropriate attributes updated. A partial list of the as-built information that is entered into the GIS includes: pipe diameter, inverts, material, length, slope, project number, update date, asset type, asset identification, a unique facility identification value, and others. The GIS database which CEDRA maintains is also utilized in developing the City's utility work orders.
As part of this project, CEDRA also developed an ArcGIS Server web based mapping system for the City which enables City staff to produce atlas and utility maps. The City's Utility Line Maintenance department uses these utility maps in their maintenance operations.
The maintenance project described above has been an annual
project since 2003 and is a follow up project to the project which
CEDRA performed which involved the initial development of the
City's parcel, easement, street, sewer, water and storm water
databases. In this previous project The CEDRA Corporation assisted
in the design of the databases as well as the conversion of the
City's paper system and micro-film drawings into the City's GIS.
Parcel Mapping, Starke, Florida
This project involved the conversion of the County's parcel database from an ArcView 3.3 environment to an ArcGIS 10.3 environment. In transitioning from the old environment to the new, the County wanted to take advantage of ESRI's File Geodatabase format and annotation featureclasses. In the ArcView 3.x environment, annotation was represented by a point feature with an attached graphic text element. As such, in addition to generating the File Geodatabase featureclasses for the non-annotation shapefiles (lot lines, parcel polygons, etc.), CEDRA created various annotation featureclasses for the County's parcel lot numbers, area, blocks and street layers.
As can be expected, the transition from ArcView 3.3 to the 10.3 environment involved quite a bit of re-education on the operators' part. CEDRA, as part of the project, provided training and assisted in the development of workflow procedures enabling the County's GIS technicians to get up-to-speed in an efficient and timely manner.
Additionally, CEDRA assisted the County in establishing a Master File Geodatabase that resided on the County's Server. Rather than implementing an Enterprise based GIS, which was cost prohibitive for the County, CEDRA worked with the County to create an environment where the Master File Geodatabase, containing the latest version of the County's parcel and annotation layers, resided on the County's Server while local versions of the Master File Geodatabase resided on the various operators performing the parcel mapping. Various County staff would perform edits on the local version of the Master File Geodatabase. Once the edits are complete, the Master File Geodatabase on the Server is updated. A custom Update button was developed by CEDRA for the County which enables the County operators to update the Master File Geodatabase with a single button click.
This type of editing environment enabled the County to save more than $30,000 annually. Furthermore, the Master File Geodatabase residing on the County's server provides the data that is published on the County's GIS Map Data web page.
Heavy Truck, Wide Load Routing, Albany, New York
This work involved the development of a 3D street network dataset for New York State and a GIS web based routing application tailored for routing heavy and wide load freight vehicles. With over 200 bridge strikes occurring in New York State annually and over 2,000 nationwide, the need for a routing application specific for freight vehicles is essential. Using USGS Digital Elevation Model data in conjunction with NYSDOT street, pavement and bridge data, a 3D state-wide street network dataset, accounting for vertical clearance, posted weight limits, speed limits, roadway grade, in ArcGIS format was created. The NYSDOT data was obtained through the NYSGIS Clearinghouse under its Data Sharing Cooperative program.
Wayne County E911, Lyons, New York
Under this project CEDRA assisted Wayne County staff in developing the County's E911 street database. Specifically, the work involved acquiring the NYS Street Address Mapping (SAM) data, extracting the street data for Wayne County, and working with the County in verifying and updating the street centerline database for use in the County's E911 system.
In performing this work, CEDRA staff was on-site at the County's office performing the work and training County staff in the process. A workflow was developed and adopted by the County. Additionally, a training guide was developed enabling County staff to maintain the street centerline data.
In addition to establishing the street centerline dataset, CEDRA assisted the County in developing the EMS, Fire and Police polygon layers which are utilized by the County's E911 system. Extensive polygon editing and topological verification was performed in developing these three polygon layers.
Well Pad Design, Farmington, New Mexico
This project involved the development of an ArcGIS Desktop application that, given a well pad surface with an initial control elevation and well pad side slopes, could compute a final well pad elevation such that the cut and fill earthwork volumes would be balanced within a user-specified tolerance. Additionally, a final surface or TIN that merged the well pad with the existing ground surface was created. In construction projects a major emphasis is on limiting the amount of earth that is brought in or hauled out of the construction site.
Using Visual Basic and ArcObjects, a custom application was developed to accommodate the requirements specified above. The application was written in such a manner that the computations were based upon processing 3D polygons rather than an ArcGIS TIN dataset. This enabled the user to create the surface without using the Spatial Analyst extension, although the application could easily be modified to operate off an ArcGIS TIN dataset.
Parcel Deed Transcription, Seattle, Washington
This project involved the development of an ArcGIS Desktop application that given a text file containing metes and bounds could generate point, line, curve or polygon features. The City was in the midst of converting literally thousands of land lease documents from Excel tabular format to a spatial representation within ArcGIS. As such, CEDRA was asked to develop a custom command that would parse the Excel tabular information and create the appropriate ArcGIS features representing the parcel.
Using this command, the City literally saved hours of transcription time on a per parcel basis. Some of the parcels that needed to be converted into ArcGIS format were comprised of several hundred courses. The City employs an enterprise geodatabase. The custom command developed for the City enables the City to store the resultant features directly in the City's enterprise geodatabase.
Water Distribution Modeling, Laramie, Wyoming
This project involved the development of a water network model for the City of Laramie, Wyoming that was entirely based in ArcGIS. Using CEDRA-AVwater, this project involved the creation of a water distribution model that was based upon information stored in the City's enterprise geodatabase.
Comprised of approximately 5,000 pipes a model was developed and analyzed using EPANET. Using the CEDRA-AVwater software, the City is able to analyze steady-state, extended period simulations and perform fire flow analyzes all within the ArcGIS environment.
CEDRA worked with the City to define the water model schema which the City adopted and has incorporated into their enterprise geodatabase. As such, when new subdivisions and projects come along, the City is able to perform a quick analysis to determine adequacy of the proposed project.
Vegetation Management, Edmond, Oklahoma
This project involved the development of an ArcGIS Server web application for maintaining the City of Edmond's tree inventory system. The City's Urban Forestry department utilizes the application to mark completed maintenance work and work completed for trees near power lines.
The application features a Find Tree Species command which enables the user to enter a particular type of tree species. Given the name of the species the application searches the database and upon completion displays in table form the results of the search. Clicking on a record in the table causes the application to zoom to the location of the selected record. The table also provides functionality for creating a file, containing the displayed records, that can be viewed in Excel or any text editor. When displayed in Excel the data appears in columns just like it did within the web application.