Monday, 11 February 2019

Terrestrial Laser Scanning (TLS) for transmission line tower

Thanks to the reliability, high resolution and accuracy - TLS system is the perfect survey/reality capture tool for tower structures - as it can scans and registers millions of points within minutes.

Recently we completed a job to scan and model transmission line towers for our client.

Scanning and modelling of a tower

The speedy data acquisition at the site also makes this method highly suitable for scanning and modelling of other complex structures such as bridges, buildings, etc.

The prerequisite is that the structure must be within the scanning range (usually from a minimum of 0.5m to tens or hundred of meters, depending on the type of scanner used). In addition to this, an unimpeded direct view is also essential from TLS position(s) to the structure.

Another example from our past work was a bridge structure:-

Bridge structure survey

The more complex is the structure the more justifiable it will be for the deployment of this technology due to the superior data acquisition speed compare with other techniques. 

Feel free to contact us if you have such survey need.   

Monday, 14 January 2019

Eagle attacks

Where eagles dare…

Our drone was nearly attacked by an eagle while returning to land after completing a mission in Pulau Langkawi aka ‘eagle island’.

You can sense our anxiety from this brief video:

Eventually, the eagle turned away and we got our drone back in one piece. But not everyone was as lucky. One spectacular eagle attack ended disastrously - watch the action below:-

Monday, 10 December 2018

Desa ParkCity, Winner of FIABCI Malaysia Property Award 2018 (Master Plan Category)

The multiple award-winning Desa ParkCity
Congratulations to Perdana ParkCity Sdn Bhd on winning the FIABCI Malaysia Property Award 2018 in the Master Plan Category for the Desa ParkCity development. A crowning achievement indeed in attaining the coveted FIABCI award - the gold standard aka the Oscars of the property industry.

JPSurveys is glad to be a part of the prestigious development with our contribution as the official land surveyor; providing a full spectrum of land surveying services to the development including topographical survey, pegging, land title subdivision survey, strata landed parcel title survey, etc since 2000.

Best Luxury Landed Development 'SERENE MONT KIARA'

Serene Mount Kiara by Impiana Land & Development Sdn Bhd

Congratulations to Impiana Land & Development Sdn Bhd's prestigious development, ‘Serene Mont Kiara’ for winning the coveted  '2018 Best Luxury Landed Development' by iProperty Development Excellence Awards (IDEA) 2018. The award recognizes 'par excellence' in property development in 14 highly regarded categories

We at JPSurveys are proud to have been the land surveyor for the celebrated land development in Mont Kiara, Kuala Lumpur. We have provided a full spectrum of land surveying services to the development including engineering survey ( topographical survey and site setting out survey), land title survey, strata title survey and consultancy on land matters.

Monday, 26 November 2018

Advantages of Terrestrial Laser Scanning (TLS) Method for Train Tunnel

Recently JPSurveys utilised 3D Terrestrial Laser Scanning method to precisely determine the 3D as-built alignment of the existing LRT tunnels in order to facilitate design and construction work above the tunnel
Left: scanning work at the site; Right: 3D virtual point cloud created  

As the tunnels (3 stretches; few hundred meters each) are relatively short in length, the traditional, competitively-priced 'total station method’ could also be feasible. However, for this method to work, the exact locations of the required cross sections (initially estimated at 9 nos) needed to be specifically identified and confirmed before the start of field survey work.

Eventually, two options were proposed to our client for consideration: total station method (option A), or TLS method (option B). We are pleased with our client's farsightedness in choosing Option B albeit a costlier option. It was the right choice as changes were indeed made after completion of the field survey work: the final locations of the required 9 cross sections have since been altered and additional sections were also requested by the engineer/planner

If the client had chosen option A, it would have meant remobilizing our team for the second time to pick up those cross-sections. Thus, the advantage of TLS method enabled the entire tunnel to be captured as one continuous 3D model; thereby allowing an infinite number of detailed cross-sections to be extracted without the need to re-survey the site - significantly saving costs, eventually.

Precious time lost is also averted: the working time allowed in such a busy train tunnel is typically limited to a few hours past midnight i.e. between the running of the last train for the night and the start of the first train in early morning hours. This is compounded by the time-consuming process required to obtain permission and securing safety escort from the train operator or authority to resurvey the tunnel the second time.
Extraction of 2D cross sections from the rich and accurate 3D model

Tunnel 3D position (lower right)  is accurately determined  to validate  the  design and construction work on top of the tunnel

JPSurveys provides 3D laser scanning survey services for various applications; Kindly contact us