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Greenwich (L&Q) Project

68 River Way, Greenwich, London SE10 0BE

Vertical Control & Site Engineering

Survey Methodology & Project Delivery

GNSS, Robotic Total Stations, Leica DNA03 & GeoFennel FLP150 Laser Plummet.

Projects Piltown House
Topographical Land Surveys

Vertical Control & Site Engineering

  • Geospatial Site Engineering Coordination
  • Vertical Control (Zenith Plummet Vertical Transfer)
  • Site Engineering & Setting Out

Sector: Construction & Engineering

About This Project

SurveyWorx were commissioned to manage & deliver the Survey Specification, working in collaboration with the Construction & Design Teams who would lead the Construction/Development of the Project.

The Greenwich Peninsula Project is a mixed-use development in North Greenwich, London, comprising over 500 Apartments/Homes across 7 RC Frame High-Rise Buildings/Structures, ranging from 12 to 32 Floors/Levels.

Survey Methodology & Project Delivery

Using a combination of the latest integrated Robotic Total Stations, GNSS, EML & GPR Methods & “Robust Survey Methods” to capture & verify accurate Survey Data, the Survey Specification was delivered both efficiently & cost effectively within the allocated timescales.

Survey Control Network

Primary Survey Control was established using Total Station & GNSS with a Closed Loop Traverse completed. PK/Mag Survey Nails with Survey Markers were drilled/fixed into hard standing surfaces with Station Description Sheets completed. Field Observations were Post-Processed through MicroSurvey’s STAR*NET Software to calculate Least Squares Adjustment & Analysis (Residuals, Standard Errors, Error Ellipses) to produce final Control Network Coordinates.

Data Acquisition/Capture

Topographical Survey Data was acquired/captured using a combination of Robotic Total Station (hard standing features) & GNSS (soft standing features) where possible.

Underground Services Data was acquired/captured using a combination of the latest integrated EML & GPR Methods & “Robust Survey Methods” to capture & verify accurate Survey Data.

All Underground Utilities were physically Marked/Sprayed on the ground, with this information transferred onto a Topographical Survey & delivered as a final Drawing in AutoCAD format.

A Desktop Search of the Statutory Record Drawings for the area was completed. This included all Utility Companies’ owned infrastructure within the Site area presented in a pack.

Data Post-Processing

Raw Survey Data/Observations were downloaded & Post-Processed through Survey Software. Data was captured & coded using a specific Project Code List written within SCC. This ensured all features were assigned a specific Code when Surveyed & imported to a defined Layering System within SCC, allowing our AutoCAD Department to efficiently edit data within the software & export to AutoCAD.

Coordinate Reference System

Survey Data related to the OS Network OSGB36(15).

Delivery & Output

The final Drawing Package included; Topographical Survey & PAS128 Underground Utility Survey. All Drawings were passed through Quality Assurance prior to final delivery.

All work will be produced in accordance with the RICS Specification: Measured Surveys of Land, Buildings & Utilities – 3rd Edition.

Glossary

GNSS = Global Navigation Satellite Systems.
RTK = Real Time Kinematic.
GPS = Global Positioning System.
OSGB36 = Ordnance Survey National Grid Reference System.
ETRS89 = European Terrestrial Reference System.
WGS84 = World Geodetic System (GPS/GNSS).

Sample Delivery/Output

Projects Piltown House