Horizontal and Vertical Control i. Completed Calibration sheet indicating the monuments used to establish the Basis of Bearings and Vertical Benchmark held to control this survey. The horizontal and vertical control shall be set by the Surveyor that's issued the first Notice to Proceed.
Horizontal and Vertical Control. AESI will set photo control targets that meet or exceed Caltrans Second Class Accuracy Standards for Basic Corridor Control. Horizontal locations will be based upon the CALVRS system, utilizing the Lancaster station to establish two (2) horizontal locations, one to be used as a base location for our Trimble R-10 base station and the other as a horizontal check. Each aerial target will be located with two (2) 180 epoch (3 minute) observations at different times of the day to verify accuracy. Vertical datum will be NAVD88, with observations made on a minimum of two (2) Los Angeles County benchmarks. In the event the benchmarks don’t measure within 0.10’ an additional benchmark will be observed to verify any discrepancy. All observations will be processed through the Trimble Business Center Software and provided in the format acceptable to Caltrans.
Horizontal and Vertical Control. Establish primary and secondary horizontal and vertical control. Horizontal control will be based on State plane coordinates, South Central Zone adjusted to surface using the TxDOT Xxxx County Combined Surface Adjustment Factor (1.00013). Horizontal control will be based on NAD 83 (CORS). Vertical control will be based on NAVD 88 (Geoid 09 or Geoid 12). All control work will be established using GPS (static / RTK / VRS) and conventional methods.
Horizontal and Vertical Control. Establish survey control using existing available reference control monuments and place site control points and benchmarks with reference ties for use during construction.
Horizontal and Vertical Control. The Engineer’s Surveyor shall recover, review and update existing horizontal and vertical control data, and establish new points as necessary. The surveyor shall prepare location sketches for offsite controls located on the main cross streets, and as directed by the State. The original datum should be maintained with the most suitable adjustment made in order to maintain consistency between the control values and the current planimetric products. DocuSign Envelope ID: EB684705-7EFE-459C-ACCD-BB3BEAE6EBD7
a. Horizontal and Vertical Control ties should be made and tabulated to other control points in the vicinity.
b. The Engineer’s Surveyor shall prepare a report on the verification and adjustment of the Control.
c. The surveyor shall field locate property corners, existing right-of-way markers, improvements, visible utilities, and verify and update the planimetric file.
Horizontal and Vertical Control. The field survey and subsequent survey control and monumentation plan (survey control diagram) will establish, horizontally, the location of existing section corners, property corners, and the local control relative to the Colorado High Accuracy Reference Network (XXXX).
Horizontal and Vertical Control. The sub-consultant shall conduct an initial site reconnaissance to identify necessary vertical and horizontal control needed for the survey. Prior to data collection efforts, survey control will be recovered and verified using either differential leveling or Real-Time Kinematic (RTK) Global Positioning System (GPS) techniques, whichever methodology is deemed most practical. The survey will extend from the east side of the emergency use path to edge of beach at the eastern toe of the dune. Sub-consultant will obtain cross sections every 50 feet along the alignment of the walking path atop the dune, capturing centerline, edge of path, and grade breaks along each cross section. Sub- consultant will identify edges of vegetation and trees 3” diameter or larger with common tree name and diameter. Survey data shall be collected from toe of slope to toe of slope utilizing angle-distance total- station, RTK GPS, and or conventional rod, chain and level methodologies as needed.
Horizontal and Vertical Control. Unless otherwise specified, benchmarks for Vertical Control and a baseline for Horizontal Control will be as indicated on the Drawings or furnished by Engineer. Contractor will use these controls to establish other lines and grades as indicated on the Drawings. All such Horizontal or Vertical Controls will be preserved by Contractor, and in case of destruction or removal by Contractor or Contractor’s employees, said controls may be replaced by PCCA at Contractor’s expense.
Horizontal and Vertical Control. Utility Locates (Kansas One-Call, Waterone, and Sanitary Surveys)
Horizontal and Vertical Control. Re-establish vertical and horizontal control points for supplemental surveys and for reference on Alignment, Ties and Benchmark sheet. Topographic Survey Right-of-Way. Stake right-of-way per approved plats. Task 3 - Utility Coordination
