Vertical Control Clause Samples

Vertical Control. Elevations for plans must be on the North American Vertical Datum of 1988 (NAVD88) and verified against benchmarks on the Johnson County Vertical Control Network. Show the existing Johnson County Vertical Control Network Benchmarks and their elevations on the plans. Horizontal control is to be based on the Kansas State Plane Coordinate System, North American Datum 1983, North Zone.

Vertical Control. 4.1 Search and reconnaissance for record city ▇▇▇▇▇ ▇▇▇▇▇; assume at least two benchmarks exist within one half mile of project. Set and maintain intermediate vertical control points. 4.2 Digital level through found monuments to establish primary and intermediate control. 4.3 Office calculations, adjustment, tabulations of coordinates, and working drawings.

Vertical Control. Any vertical control elevations for plans must be obtained from a benchmark on the Johnson County Vertical Control Network.

Vertical Control. ‌ A. Vertical control must be based on the Canadian Geodetic Vertical Datum of 2013 (CGVD2013). 1-3.6 ENVIRONMENTAL CORROSION‌ A. The Design-Builder must determine all environmental corrosion conditions and ensure all material selections, designs, and coatings used to protect metallic structures are suitable to meet the required Design and Service Life in accordance with the HFDG.

Vertical Control. Vertical control will be established with the help of points established from GTS benchmark. i) The vertical control point for bathymetric survey and topographic survey should be the same. ii) Available CWC / Irrigation / Flood Control Deptt. gauges and referenced pillars shall also be fixed (horizontal and vertical both) and photographed. 2.4.1. Water Level Gauges i) Water level gauges are to be erected at every 10 km interval along the canal/river. The gauges should not be disturbed for entire duration of survey. ii) Reading at all the gauges in a stretch to be taken simultaneously for entire duration (as mentioned in Table 3.1.1 below) of bathymetric survey. Readings are to be taken at 1 hr interval from 0600 hours to 1800 hours. If survey is commenced before 0600 hours, the reading is to be taken 15 minutes before commencement of survey time. Similarly, if survey of a day is ending after 1800 hours, reading shall be taken up to the completion of survey. Low and High water level time and gauge reading during 0600 hours to 1800 hours is also to be recorded specifically. iii) Series of gauges may be erected if one gauge is getting submerged. Overlapping between two gauges shall be one metre. iv) The gauges are to be connected to a nearest Bench Mark Pillars by leveling (digital levelling) and its datum value shall be established ▇.▇.▇▇ MSL & CD. The raw data of digital level needs to be submitted. v) A TBM is to established close to the gauge. Check levelling to be carried out on weekly basis or every time on shifting / additional gauge / disturbance / tilt etc. vi) The Photo graphs are to taken at each site with date and time of photographs for confirmation of tide reading in day time.

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. (No vertical control may be set using aerial GPS methods) Benchmarks – One permanent benchmark must be set at each extremity of the job in places where they will not be disturbed by construction. For projects over 1000 feet long, permanent benchmarks shall be set at the extremities and a minimum of 700 feet apart and a maximum of 800 feet apart. Typical Benchmarks on permanent objects includes: steps, settlement cuts on brick buildings etc. or by setting copper plugs in concrete posts if other appropriate fixed points are not available. Benchmarks shall be referenced to the appropriate datum for the borough in which the work is being done. The required method of obtaining elevations is differential leveling. The accumulative error in benchmark elevations shall not exceed 0.002 feet per set-up. A minimum of two (2) Borough President ▇▇▇▇▇ ▇▇▇▇▇ must be tied to and verified for each project. When benchmarks exceed maximum accumulative error, other benchmarks must be reconnoitered and measured until found benchmarks meet accumulative error specifications. All set benchmarks must be accompanied by a sketch and accurate description so as to be easily recoverable. All turning points shall be accurately described. If electronic differential leveling is to be used, the Consultant shall provide a sample printout for approval before proceeding with work. Using other methods to obtain elevations such as Trigonometric, Reciprocal leveling and or methods using GPS equipment is allowable, but must be pre- approved in writing by the Commissioner before work commences.

Vertical Control. Elevations for plans must be obtained from a benchmark on the Johnson County Vertical Control Network. Show the datum benchmark and elevation of the datum benchmark on the plans. Surveyors will use the Kansas State Plane North (NAD 83) coordinate system.

Vertical Control. Elevations for plans must be obtained from a benchmark on the Johnson County Vertical Control Network. The datum benchmark and elevation of the datum benchmark will be shown on the plans. See attached Kaw Valley Engineering (KVE) scope of services for more detailed information. Section Corner and Quarter Section Corner locations must be referenced to the Johnson County Horizontal Control Network. As part of the design survey all Section Corners and Quarter Section Corners within the project area and others used for project control must be located, reference and state plane coordinates determined with GPS equipment. The coordinates and referenced ties shall be shown on the plans and the standard corner reference report submitted to the Kansas State Historical Society, the County Engineer, and cities project engineer within 30 days of the survey as required by state law. If a Johnson County Horizontal Control marker may be damaged by construction the County public works department should be notified prior to the bid letting. See attached Kaw Valley Engineering (KVE) scope of services for more detailed information.