1.2 Topographical survey



Map the physical characteristics and existing constraints of the wind farm site.


Inaccurate survey results, inadequate extent of area surveyed, data not suitable for design input.

Forte’s Risk Mitigation:

At Forte we ensure top quality by
1) following a strict and comprehensive specification to maximise data obtained for later design
2) quality assurance via preliminary desk studies and careful attention to fieldwork activities
3) ensuring no data is “left behind” or resurveys required and thereby ensuring a more streamlined BOP design process.

1.1 TS -Pic2

√ Specification to maximise data capture  

√ Deliverables suitable for 3-D design input



The topographical survey is one of the lower cost items in the engineering phase. However, it nonetheless requires attention to detail as a poor survey leads to poorly presented or incomplete data for designs. Careful attention to detail will avoid re-surveys, cost overruns and design phase delays.

This delivers best value to the client and permits the clients engineering team to advance confidently to the design phase.


1) Sign a) multiple work package (“EPC Manager”) contract or b) single-work package contract with Forte.

2) Issue all required information to commence survey

3) Arrange all accesses to survey areas with landowner

*Forte can execute the survey with its partner or manage the Clients appointed surveyor


1. Documentation Check (Desk Study)

Review of project documentation to identify what constraints are to be considered when conducting the survey


2. Scope Definition and Specification Confirmation

  • Finalise the required scope and specification of deliverables after desk study completion.
  • The details will be shared with the client so they can provide feedback if desired.


3. Fieldwork

After obtaining access to site (action by client with support from Forte) survey will be conducted in accordance with specification.


4. Survey Drawings Work

  • The required background mapping will be purchased and checked for adequacy (issues to be considered are coordinate systems and overlapping maps).
  • Coordinate systems to suit local authorities (national coordinate systems) and international suppliers e.g. OEMs (UTM coordinate system)
  • All survey information (point data) will then be processed and input as 3-D data into an AutoCAD drawing file including the background mapping.


5. Onsite verification and Issue of Deliverables

  • After completion of the drawing work an onsite spot check and verification will be conducted.
  • Any errors or discrepancies identified will be rectified in revised drawings and thereafter issued to the client.


Report: Survey Report (PDF)

  • Summary of survey activity completed


Survey File

  • Point file (from GPS, Total Station, Laser Scanner (point cloud)), or



  • 3D CAD drawing (containing 3D lines, blocks, and text etc.)


Drawing Extent

  • WTG: access, storage, erection and overhang areas using preferred OEM specifications or matrix of OEM requirements from Forte Database. (This also covers all required platforms etc).
  • Civil: All non-public roads under client’s responsibility (Road centreline, edges and 10m offsets, and slopes)
  • Electrical: All proposed internal wind farm cable routes, substation and grid connection route (as required),
  • Other: All existing services, street furniture, cadastral boundaries

√ Result: Identification and mapping of all physical characteristics at ground and above ground level so that all existing constraints can be considered in the wind farm design.



Output will be in AutoCAD Civil 3-D format

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