Vertical Control. Elevations for plans must be obtained from a benchmark on the Xxxxxxx County Vertical Control Network. Show the datum benchmark and elevation of the datum benchmark on the plans.
Vertical Control. Any vertical control elevations for plans must be obtained from a benchmark on the Johnson County Vertical Control Network.
Vertical Control. 4.1 Search and reconnaissance for record city Xxxxx Xxxxx; assume at least two benchmarks exist within one half mile of project. Set and maintain intermediate vertical control points.
Vertical Control. The vertical control of the topographic survey will be carried out by means of geometric or differential levelling. Information will be located and obtained from a BM of the IGN, to transfer the official elevation to the project. The leveling will have to be compound and in closed circuit and using as permissible error the expression: ± 0.02*√k; being "k" the leveled distance in kilometers. Two (2) BMs will be strategically located and monumented in the project area, in places that will not be reached by the works during the execution of works and intervisible to each other for the purpose of staking out the work. The UTM coordinates (East, North) shall also be established for these milestones. For their easy location they will be constructed with the following specification: concrete f'c= 140 Kg/cm2 of 20x20x40 of depth placing a bronze plate (type register of 4"), in which the BM will be indicated. The work memory of the vertical control will include: Methodology of data collection, adjustment and compensation of the considered leveling circuits, table of results, sketch, copy of field notebook.
Vertical Control. The CONSULTANT shall establish vertical control based upon North American Vertical Datum 1988. The CONSULTANT will establish one vertical control base station in the general center of the project by static GPS/OPUS methods while constraining to and checking into at least two nearby available NGS stations if available. Additional vertical control points (random control stations and temporary benchmarks) will be established by conventional differential leveling techniques.
Vertical Control. A system located in the field that provides a point of vertical reference for all Work described in the Task Order.
Vertical Control. Vertical control to meet Xxxxxxx County survey requirements. Tie vertical control into the 2 bench marks on the bridge. Set a temporary bench marks as Overland Park, Kansas July 24, 0000 Xxxxxxx Xxx. over Blue River Bridge Redecking needed. Set at least one control point near the bridge on the north side and south side of the river, so survey can be recovered for construction.
