LASER SCAN AND ENGINEERING DRAWINGS FOR BOARDWALK PIPELINE

Dale Stockstill & Associates was hired by Boardwalk Pipeline to provide 2D Plan and Section piping drawings for upgrades to be performed at two sites in their Jackson Yard facility. DS&A used their Topcon GLS 1500 High Definition Laser Scanner to scan the two areas where the work will be performed. The existing pipes, valves, walkways, racks and footings were traced by Aaron Lee, a DS&A technician, to provide the initial existing condition plans to be used by the BWPL engineer for his design. DS&A will also provide the Demolition, Construction, and  As-Built drawings for these two projects. The use of the GLS 1500 enabled DS&A’s crew to do all the preliminary surveying necessary for the projects in one day- a project that would have taken 3 to 4 days of conventional surveying.

Chad Cutrer setting the GLS-1500

HIGH CONSEQUENCE AREA (HCA) SURVEYS FOR BOARDWALK PIPELINE

Boardwalk Pipeline hired Dale Stockstill & Associates’ to provide preliminary and pre-construction surveying for 3 sites in the Mobile, Alabama area that needed to be Hydro Tested for compliance with DOT High Consequence Area regulations. The sites consisted of a school, a church, and a nursing home facility and the 10” High Pressure Gas Pipeline that is buried near each. DS&A’s crew located and probed the pipeline along each site reestablishing the pipeline stationing by comparing features such as vents, road crossings, etc. to their original stationing per the 1950’s era alignment sheets. After their preliminary surveying on each site was done, the crew went back to meet with representatives from CharCo, the contractor who would be performing the hydro tests, and Boardwalk Pipeline representatives and inspectors. The crew staked the HCA limits and also placing stakes at each Potential Impact Radius (PIR) point which were calculated from precise locations of the impacted buildings as they relate to the existing pipeline. The crew also located existing utilities which were located by the “OneCall” requested by Boardwalk Pipeline and CharCo.

 

 

 

69 KV ELECTRIC TRANSMISSION LINE (LINE 120)

Dale Stockstill & Associates was tasked by South Mississippi Electric Power Association to provide all Surveying Services necessary for a new 13.4 mile Electric Transmission Line that is being built from Eucutta, Mississippi to Heidelburg, Mississippi. DS&A is providing to their client GPS control, Centerline Staking, Property Line Determinations, Right of Way Plats, Plan and Profile Drawings, Right of Way Clearing Limit Staking, Pole and Guy Wire Staking, and final As-Built Plans as necessary.

 

Laser Scanning the Smithdale Substation

DS&A was tasked by South Mississippi Electric Power Association to provide an Existing Conditions Survey for an older electric substation in Franklin County, Mississippi. DS&A’s crew used a combination of GPS, Conventional Surveying, and High Definition Laser Scanning to collect the data necessary to provide their client with a comprehensive As-built survey of the substation. The deliverable’s were a boundary survey, a planimetric topo with 1’ contours and all topographic features, and detailed 2D Engineering plans containing numerous sectional views that were specified by the client.  DS&A crew used the GLS-1500 Topcon Laser Scanner to collect all of the data while remaining safely outside of the substation fence.  Once the data was turned over to the office technicians they began registering, verifying accuracies, exporting clouds and organizing the work flow.  After delivering the requested information to the client, DS&A received a call requesting another measurement and verification on a piece of equipment not originally in the SOW.  By using the GLS-1500 Laser Scanner DS&A had already collected this information and a return visit to the site was not needed.  This resulted in a quick turn around as well as money savings to the client.

The New Orleans District Corps of Engineers

Contract W912P8-07-D-0028; Task Order 09-195C
Dale Stockstill and Associates was tasked by the New Orleans Corps of Engineers to Topo approximately 4 miles of existing levee in St. Charles Parish, LA.  The task order specified a combination of RTK and Conventional Surveying methods but we were granted permission to use our Topcon GLS-1000 laser scanner to collect data on the levee and adjacent areas.  For the portion that was to be profiled by chopping out ranges and running traditional cross sections with a total station, DS&A used existing Lidar data which was archived on ATLAS, The Louisiana Statewide GIS repository.  Using Kubit to work with point clouds in Autocad, DS&A extracted the required cross section data and submitted it in the required ASCII format along with furnishing the Corps with a mesh surface model and 3D model of the extensive improvements along the levee.  Using the GLS-1000 Laser Scanner and existing Lidar data, we were able to furnish the Corps with more than they expected for no additional cost.