Germany - services of architectural, construction and engineering offices and testing laboratories

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Details

Provided by Open Opps
Opportunity closing date
16 March 2020
Opportunity publication date
15 February 2020
Category
71000000: Architectural, construction, engineering and inspection services
Value of contract
to be confirmed
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Description

Levelling is to be carried out over all specified levelling lines as double levelling in accordance with DIN 18710-4 and the "Field instruction for precision levelling for the renewal and repetition of the German Main Height Network (DHHN) in the period 2006 to 2011", 3rd revised version of 1.8.2009, AdV (Levelling field instruction 2006-2011). Outward and return measurements are to be measured and evaluated as separate, independent lines using the "parallel levelling RVVR" method. The back and forth measurement of a profile section should be carried out on one day if possible, and the entire levelling network at the Ronneburg site should be subjected to a strict adjustment. The results and accuracies achieved shall be reported. The calculation of the fixed point heights is carried out in the DHHN 92 system with the starting height(s) specified by the client for the connection point. The evaluation is to be carried out with the software "Nigrawin" from Trukk-Soft (at least version 3.1) with the additional module "NIVNET Plus" (according to Prof. Fröhlich) in the version "NIVNET - 1000" The evaluation of the daily measurements for the sites Aue, Königstein and Gittersee as well as the adjustment are carried out by Wismut GmbH independently with the software Nigra. It is therefore necessary that the transmitted measurement data have a Nigra-compatible data format (preferably Trimble or Leica).Approvals/documents to be obtained- traffic law orders for the security of the measurement teams in the public traffic area from the competent authorities and independent organisation of the specified security measures,- security planning for the performance of the surveying work in the track area of DB AG,- organisation and commissioning of a security company recognised by DB AG for the security of the surveying work on the federal railway line,- obtaining the consent of property owners to enter private property if required.Scope of services per year and service periodsRonneburg:Urban levelling years 2021 and 2022- Length of all levelling lines: approx. 120 km,- Number of levelling lines: 104,- Number of fixed points: 864.district levelling year 2020- Length of all levelling lines: approx. 140 km (100 km if urban and district levelling combined),- Number of levelling lines: 55,- Number of fixed points: 401.town and district levelling total year 2023Aue: annually from 2020 to 2023Total network perimeter:- Length of all levelling lines: approx. 59 km,- Number of main lines: 9,- Number of secondary lines: 29,- Number of fixed points: 1300.perimeter control profiles:- Length of all levelling lines: approx. 33 km,- Number of main lines: 5,- Number of secondary lines: 12,- Number of fixed points: 800.Königstein year 2022:- Length of all levelling lines: approx. 45 km,- Number of levelling lines: 94,- Number of fixed points: 590.Gittersee years 2020 and 2023:- Length of all levelling lines: approx. 43 km,- Number of levelling lines: 27,- Number of fixed points: 150.

Opportunity closing date
16 March 2020
Value of contract
to be confirmed

About the buyer

Address
Wismut GmbH Jagdschänkenstraße 29 Chemnitz 09117 Germany
Contact
beschaffung@wismut.de

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