SITE MAP

Expert Spatial Data Acquisition - Mapping Land, Structures and Services

Our Site Map team is a group of spatial professionals who are experts in mapping all types of sites and projects – hence the name SiteMap! We work across all sectors and survey anything including land, structures, and services.

We leverage progressive spatial survey solutions to provide the answers that clients need at the greatest possible value.

Our Services

Detail Surveys

Also sometimes known as a Topographic or Contour Survey, a Detail Survey maps the terrain, features and services throughout an area of interest. Typically, this survey is referenced to the property boundaries and the Australian Height Datum (AHD). A Detail Survey can be delivered as a 3D Ground and Feature Model or as a 2D drawing in your preferred format.

How a Detail Survey is performed

A Surveyor will attend site and locate all the features relevant for the project using various instruments such as total station, laser scanners and GNSS / GPS. These features are strung together and categorised to prepare a Digital Terrain Model (DTM), contours and a drawing as an accurate map of the site.

Surveyors position this spatial information in relation to real world coordinates, a height datum and the property boundaries by measuring to geodetic benchmarks and cadastral reference marks.

Why are Detail Surveys required?

Engineers and architects require Detail Surveys to ensure that a proposed design will be compatible with the real world site conditions. Having the survey completed at the start of the project removes any costly assumptions and ensures that designs are undertaken on the correct datum. Councils and authorities will also require a Detail Survey if you are lodging a development application.

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Scan To BIM

Utilising the latest Reality Capture technology, we can measure the complete 3D geometry of your site with speed and accuracy. Our experienced and highly skilled team will work with you to understand your requirements and offer an integrated digital solution that will enable confident and effective decisions to be made.

Laser scanning presents excellent outcomes for as-constructed / as-built recording of structures, civil environments, infrastructure, facilities and plants, heritage buildings, mining, oil and gas. Historically Laser Scanning was an expensive and very specialised service however with recent advancements in technology, This technology is now accessible for everyone without the need for specialist software or hardware.

How Laser Scanning Works

Laser Scanning (a.k.a. LiDAR) is a remote sensing technology that utilises lasers to measure and capture environments in 3D. Laser Scanners pulse out narrow beams of light and for every surface it touches a point in space is recorded (each project will have millions of survey accurate points recorded). At the same time, the scanner records the surface reflectivity giving it an intensity value. Imagery is also often captured at the same time which enables point clouds to be colourised / RGB and HDR Panoramic imagery to be provided. The scans are stitched together to create 3D data sets known as Point Clouds to form a comprehensive time stamped representation of reality.

Scan to BIM

Transforming data to information. A BIM prepared from laser scans will extract the most value from the data and makes the information accessible. This process involves interpreting raw scan data and tracing over the point cloud with intelligent software to create categorised and tangible 3D CAD objects. By using this process, we can prepare BIM ready models reflecting the existing site conditions or buildings, structures, or services and deliver it in your preferred digital environment.

Aerial Surveys

Aerial Surveys enable inaccessible, hazardous and large scale sites to be mapped in a safe and efficient manner. Bennett + Bennett can undertake an Aerial Survey via a drone (RPAS / UAV) or manned aircraft using either LiDAR, photogrammetry, or a combination of both remote sensing technologies.

LiDAR – Light Detection And Ranging

LiDAR (a.k.a. Laser Scanning) is a remote sensing technology that utilises lasers to measure and capture environments in 3D. Aerial LiDAR can be acquired from a drone or manned aircraft to suite specific project requirements. LiDAR is particularly suited to mapping terrain (to produce a DTM) and is essential if undertaking an aerial survey in a vegetated environment. The lasers can find the smallest gaps in foliage to penetrate vegetation to get a ground strike.

Our team are experts in post processing LiDAR point clouds into tangible information tailored to your requirements and preferred deliverable formats.

Photogrammetry – The science of obtaining spatial information from photographs

Photogrammetry is a technique of surveying which involves the measurement and interpretation of data from aerial photographs. Our team use a variety of aerial capture platforms and software to ensure you receive the best solution for your project requirements. Photogrammetry is great for mapping urban environments. bare earth or visualisations and inspection models.

The deliverables are visually stunning and great for Digital Surface Models (DSMs) however photogrammetry can be problematic when mapping terrain in vegetated environments. If a DTM is required then LiDAR may be more suitable.

Aerial Surveys | Sitemap - Bennett & Bennett

Service Location

Underground service location and mapping is used to confirm existing utility locations and search for those unknown by using a range of techniques including (but not limited to), cable location (EMF and GPR), hydro excavation, surveying and laser scanning. Bennett + Bennett work collaboratively with cable locator and/or vacuum excavator crews to undertake the underground service location

Knowing precisely where utilities/services are positioned below the ground surface is important to ensure design, maintenance, or construction activities for new or existing developments & Infrastructure Projects and can be performed safely and efficiently to avoid unnecessary delays and costs to your project.

Classification of Subsurface Utility Information (SUI) – Quality Levels

The level of detail and accuracy you will need is dependent on what stage of the development you are at, balanced by the need to provide sufficient data to your design team. Australian standards have been developed to provide a consistent framework for the classification of information concerning underground services. Each of the sources that contribute to service location have varying levels of accuracy. By implementing ‘Quality Levels’, users are able to recognise the underlying accuracies and make informed decisions about the service and avoid injury or damage. The four quality levels are as follows:

Quality Level	Accuracy	Risk Involved
QL-D	Very low and is only shown indicatively.	Very high risk of damage.
QL-C	No Vertical accuracy Horizontal accuracy ±300mm.	High risk of damage
QL-B	Vertical accuracy ±500mm Horizontal accuracy ±300mm.	Significant reduction in risk.
QL-A	Vertical accuracy ±50mm Horizontal accuracy ±50mm	Minimum risk.

Service Locator | Sitemap - Bennett & Bennett

Mobile Laser Scanning

Mobile Laser Scanning (MLS) is essentially vehicle or rail mounted LiDAR and imagery acquisition. MLS is ideal for mapping linear infrastructure such as road and rail networks while minimising the requirement for surveyors to be in the corridor.

MLS enables large areas to be surveyed with unprecedented efficiency, safety, zero traffic interruptions and 360° street-view imagery. Spatial information can be extracted from the LiDAR point cloud to produce survey deliverables in your preferred environment. MLS datasets can be farmed to produce survey accurate deliverables, GIS data and condition assessment for infrastructure owners and manager.

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Spatial Data Analysis

Reality Capture data has become readily available to all due to significant leaps in Laser Scanning technology, advancements in processing software and industry maturity however only a fraction are using this information to its full potential. Spatial Data Analysis enables clients to maximise the value from these rich datasets and have tangible information delivered in a language they can understand.

Bennett + Bennett has a dedicated geospatial digital engineering team who are experts in:

Modelling from point cloud – Scan to BIM
Preparing Survey Information Models and BIM coordination
Clash detection
As-Constructed Conformance Validation
Movement monitoring
Deformation analysis
Artificial Intelligence (AI) / machine from point cloud and imagery

Our team are skilled in dozens of software packages to ensure we optimise a solution optimised for your digital environment and reporting requirements

SITE MAP

Expert Spatial Data Acquisition - Mapping Land, Structures and Services

Our Services

Award Winning

2021 APSEA Queensland Award for Technical Excellence

2019 APSEA Queensland Award for Technical Excellence

2018 APSEA Oceania Award for Technical Excellence

2018 APSEA Queensland Award for Technical Excellence

2014 APSEA Queensland Award for Export Award

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