GDA94 has updated to GDA2020

The Geocentric Datum of Australia was adjusted on 1 January 2017.

This is to combat the movement of the tectonic plate on which Australia sits, more than 1.5m north-east since 1994. This movement creates discrepancies between local and global coordinates that are derived from GNSS.

Make sure that you are aware of the sources of your data, including the datum, to ensure you maintain your degree of precision.

The video below from Intergovernmental Committee on Surveying and Mapping’s (ICSM) explains the datum upgrade in more detail.


Overpass bridge replaced in 57 hours

According to a report by the Accelerated Bridge Construction University Transportation Center, in Florida, a bridge was replaced in just 57 hours. The bridge is the Route 30 bridge over Bessemer Avenue in Pennsylvania.

The project used accelerated bridge construction to speed up the process. The bridge was constructed with precast concrete abutment caps, modular deck beams, and precast concrete approach slabs. The six modular deck beams consist of two steel I-girders, which were connected with ultra-high performance concrete deck joints.

See the time lapse video below or check out the article on Equipment World’s Better Roads for more.

The Internet of Things in Civil Construction

iot-250x150The Internet of Things, or IoT, is the new buzz word used to describe how more and more things are connecting to the internet. Things like your fridge, your phone, washing machine and almost anything else you can think of.

This also includes your machinery, though connecting your fleet to the office is not a new concept to those aware of the Trimble Connected Site.

IoT is starting to play a large role in the building industry. Already designers are starting to include smart features into their buildings, like blinds that automatically move to block the sun using its connection to the internet. Or a building using this connection to conserve energy by finding a way to heat or cool naturally.

This type of interaction with the structures we use on a daily basis can easily be extended into the civil area.

Imagine a bridge that will provide you with up-to-date information on its congestion. What about solving traffic and congestion issues, as well as parking in cities. Solutions like this could ease the way for the next generation of connected, autonomous vehicles. The IoT is already being tested in the USA to synchronize traffic signals. They are also testing sensors in the roads to provide up-to-date parking information.

With the IoT growing and expanding into all areas and its solutions becoming expected conveniences, it becomes important for those in all areas to be aware of it and that it almost certainly will impact their work in the future.

The inspiration for this article came from the CONSTRUCTECH blog Using IoT to Build Construction by Peggy Smedley.

Graders move into the mainstream

Landsborough-Grays_0887smallMotor graders traditionally have been used for finish grading, while the ‘heavy equipment’ took on the rough grading. However new technology is now allowing graders to be more versatile, cost effective and efficient.

Technology that enables precision grade control and stakeless construction. It means the humble motor grader can now be used for much more, including parking lots, landscaping, and golf courses. As well as its typical tasks like construction and maintenance of gravel and dirt roads.