Archive for category: Case Study

PROJECT

Singleton Safer Roads Project LiDAR Survey

CLIENT

David Cant Surveyors (GHD)

DATE

November 2018

SCOPE

A local council received funding from Transport for NSW’s Safer Roads programme for the design and implementation of 4 road safety projects. 20km of the road was required to be surveyed; the following information is to be contained in the survey:

●   Investigation and location of existing traffic facilities i.e. line marking, signage, guideposts etc.
●   Items likely to affect installation of any proposed measures i.e. driveways, culverts, power poles etc.
●   The survey is to be undertaken with appropriate traffic control if required and if required is to be in accordance with RMS “Traffic Control at Work Sites Manual”
●   100mm Accuracy

SOLUTION

●   Use Nextcore UAV LiDAR as survey capture
●   Fly from 10 safe locations across the length of the site
●   Reduce static observations from survey grade base & LiDAR base against CORS
●   Survey connection to state survey marks & RTK GPS survey QC points across entire job length
●   Feature extraction from LiDAR point cloud
●   Survey features extracted in accurate 3D space

RESULT

●   20km of Survey Accurate data captured in 2 days
●   Feature extracted & drafted in 4 days (compiled hours)
●   Delivered in 3 days from capture
●   Project delivery in 3D platforms as well as AUTOCAD in survey layers

PROJECT

Level 2 Steel Truss Bridge Inspections Using UAVs

CLIENT

Queensland Rail and GHD

DATE

Q2 2016

SCOPE

The client required a detailed level two structural inspections of 13 steel truss bridge between Cairns and Rockhampton in QLD. Bridges ranged from 100m single span up to 700m 8 span bridges.

The client required detailed high resolution imagery of the bridges to enable the contracted engineer to carry out a detailed Level 2 asset inspection.

SOLUTION

Airsight engaged the help of Propeller Aero to use their advanced cloud based asset modeling platform to enable Airsight to capture high quality spatially orientated imagery of the assets, create a detailed point cloud and orientate the images to enable an accurate desktop inspection.

The data was captured in the field then using 4G Telstra internet was uploaded into the cloud where the data was immediately geotagged and processed in Propeller Aero for delivery to the engineers. The data was generally made available between 1-2 days of capture.

RESULT

Within 1 to 2 days of data capture of each bridge Airsight was able to deliver all required data deliverables to the engineers so that they could carry out their respective Level 2 engineering assessments and prepare the reports for the client, without the need for anybody to climb, traverse or access dangerous areas within the rail corridor.