INTERNATIONALLIMITED

(LiDAR)

A L UM I NA PA R T NE R S OF

J A M A I C A & J AM AL C O

Spur Tree Post Office

Facsimile : +876 - 904 9409Telephone : +876 - 523 1022West IndiesManchester, JamaicaP.O. Box 35

HWE Mining & Contracting Ltd

H A U L R O A D F R O M C H -3,600P LA N O F H A R M O N S V A LLE Y

H A R M O N S V A LLE Y H A U L R O A D

to C H -7 ,800.00.

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“We focus on our clients’ needs”

Industrial

- Dimensional control surveys of manufactured components for processing plants.

- Alignment surveys for conveyors, idlers and rotary mills.

Engineering Surveys Dimensional Control Route Surveys Topographic SurveysGIS Updating & Development

Land Surveying Services provided by Surtech include:

Specialising in surveying services for the resource and construction

sectors, Surtech provides a comprehensive range of services

necessary to facilitate large and small scale project developments.

Topographic surveys

- Digital Terrain Modeling (DTM) using RTK GPS data acquisition

techniques or conventional total stations where needed.

- Production of DTM’s and detailed drawings for the design of

factories, commercial and office buildings, resort developments

and real estate developments.

- Computer generated 3D visualization of digital terrain models

to assist Architects and Planners in the design of resort and real

estate projects.

Geodetic

- Spatial control surveys for project development and photogrammetric terrain modeling.

- Spatial control for gravity and magnetometer surveys.

- Rationalisation, integration and resolution of project datums and reference systems.

Route surveys

- Survey and stake-out of proposed routes, including preparation of alignment sheets.

- Evaluation of route impact on surrounding communities.

GIS Updating & development

- Development of GIS databases, including migrating existing data,

building topologies and schema creation.

- Image processing services including rectification, ortho-rectification,

image enchancement, tonal balancing and interpretation.

- Raster and vector feature extraction (road, rivers, etc.) and

classification (land cover & land use).

Hydrographic

- Establishment of project height reference system relevant to tidal

constituents utilising various tide measuring techniques.

- Mapping of seabed in coastal areas and rivers including tide and

current measurements.

- Hydrographic surveys for marinas, port developments, oil/gas

platforms, offshore pipelines and cable routes, and navigational

hazard mapping.

Audit/quality control surveys

- Contractors setting out.

- Earthwork quantities.

- Verification of terrain models and survey control during construction.

Engineering / construction

- Setting out of infrastructure facilities, roads, railways, process plants, power transmission lines and pipelines.

- Route location for transport facilities through feasibility studies to final design and construction stages.

- Earthwork quantity computations for planning and progress certificates.

- As - built surveys.

- Optimisation of existing road and railway alignments.

Exploration

- Establishment and marking of mining tenements and contact of work boundaries.

- Boundary definition of land acquisition for compensation purposes.

- Transforming exploration data from local grid datum to national or custom project grid datum.

- Advise on survey control and mapping requirements for the various stages of mine and procesing plant

development.

Instrumentation

Trimble GPS/ GNSS Receivers

Leica Total Stations

Digital Levels

Trimble Robotic Total Stations

Software

Terramodel

AutoCAD

MicroStation

Trimble Geomatics Office

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Primary benefits

Scanner specifications

Technology working for you

• High resolution data

• 360° Horizontal x 310° vertical coverage

• Up to 500,000 points per second

• Class 3R eye safe laser

• Safe for use in production/process plants

• Accuracy 5 mm

• Accurate as-built of existing facility

• Completeness - more information

• No return visits for missed measurements

• All disciplines can use the data

• Unobtrusive – personnel risk reduced

• Data matches facility coordinate system

• Clash check design against actual

• Confidence in fit-ups / hook-ups

• Reduce / eliminate field welds

• Reduce / eliminate hot works and field

modifications

• Reduce shut down time

3D Laser Scanning

Is Your Project Taking Advantage Of Laser Scanning. With the current demand for quick turnaround to modify and

upgrade existing production and process facilities, accurate as-built information is more vital than ever before.

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Using inexpensive LFM software, unique to Z+F laser scanners, allows

photographic quality visualisation of the full sphere obtained from each

individual scan. Take accurate measurements, obtain pipe diameters, clearance

pipe to pipe, visualise design elements.

Design in the 3D As-built environment

• Refineries

• Process Plants

• Offshore Platforms

• FPSO Conversions

• Power Stations

Where can 3D laser scanning used :

• Smelters & Steel Works

• Nuclear Plants

• Infrastructure–bridges, highways,

railways, tunnels

• Architecture

• Heritage Sites

3D point cloud :

Quickly delivered shortly after completion of the field survey, the results from

numerous scans, from 2 to many 100’s, can be consolidated into a single 3D

point cloud database. Suitably experienced designers can work directly in

their design environment using the point cloud as a “legacy data” background.

Ideal for preliminary planning and routing of new works. Clash checking of

pre-design can be immediately undertaken and modified. Tie-points can be

identified and coordinates obtained.

3D CAD models :

Surtech has its own in-house cost effective 3D modelling capability based in our Head

Office in Jakarta, Indonesia. Using Z+F LFM Modeller and Server software our full time

crew of experienced modellers convert the 3D laser scan images into Virtual Reality

3D CAD models, which can be imported into any of the major available CAD systems.

3D laser scanning is a widely used and proven technique for

as-built surveys. It is more accurate, much quicker and delivers far

better and more complete results than traditional manual

measuring. A continuous laser beam takes very closely spaced XYZ

measurements over the visible surfaces of the target structures.

When viewed on the computer screen this appears as a cloud-like

image of the structure, which is known as a “point cloud”.

Our high speed Z+F Imager 5003 and 5006 3D laser scanners

reduce “on-site” time, which is particularly appealing to plant

operators. This is advantageous when work windows and

accommodation are limited or restricted during scheduled plant

maintenance and shut-downs.

These highly detailed 3D models, referenced to the facility coordinate system, are quickly generated which

allow your engineers and designers , from all disciplines, to fully examine complex as-built structures, with

completeness far surpassing anything previously possible. Vast quantities of high integrity digital data are

readily available to generate 3D walkthrough simulations and 2D CAD drawings.

Laser Scanning Deliverables

• AutoCad

• AutoPLANT

• PDS

• MicroStation V7 and V8

• PDMS

• Aveva Review

LFM Software can export and dynamically

link with :

• PlantSpace

• INOVX

• NavisWorks

• SmartPlant Review

• SmartPlant 3D

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• a dense array of points is required

• ground and non-ground features to be measured

• precision of 0.1 to 0.5m

• photogrammetry not suited (eg. dense vegetation)

• quick turnaround is required

• sizeable project area, typically > 5000ha

• inaccessible areas

• poor lighting, eg. at night or high latitudes

ALS is ideal in situations when you face one or more of these challenges :

ALS is an active, optical remote sensing technology used to create a Digital Terrain Model (DTM) of the earth’s

surface. This is done by measuring the time delay between the transmission of a laser pulse and the return reflection

signal from the object scanned. The position of the aircraft is referenced by using integrated GPS-INS technology.

How does Airborne Laser Scanning work ?

Ground control not required, but ...Ground check points highly recommended for :

The direct Geo - referencing of the ALS data means that minimal ground

control is required to carry out the survey. However ground check points are

recommended for :

• Detection and removal of any small systematic errors

• Independent check on accuracy obtained

• Check points usually 100 xyz points in typical project area

• Still need for Surveying Redundancy

Let Airborne Laser Scanning (ALS) work for you

Fast, Accurate and Timely – the Key pointsAirborne Laser Scanning is a fast and accurate data collection method. Unlike conventional mapping technologies,

the airborne capability of laser scanning allows users to survey the most challenging terrain environments, such as

forests and deserts. ALS is highly-suited for large area or long corridor surveying due to the speed at which data

can be collected. Key points to remember:

• Acquiring 180 million data points per hour

• Measuring ground & above ground features

• Typical vertical data accuracy of 0.15m rms

• Horizontal data accuracy up to 0.2m rms

What do you get from an ALS survey?Each laser shot fired from the sensor creates a three dimensional

coordinate. This results in millions of spot heights describing the

surface which has been surveyed. This unfiltered data is called the

Digital Surface Model (DSM). This data will include points collected

on the ground, on vegetation, on buildings and any other object

that may be within the survey area. This data is useful for forestry

applications, line of site communication, encroachment of

powerlines and 3D city modeling applications.

Removing trees to get a bare earth modelThe ability of the laser pulse to pass through small gaps in forest canopy allows for points to be collected on the true ground

surface. ALS is the only airborne technology that can capture a terrain model of 10-15cm accuracy under a forest canopy.

The ALS data is filtered to remove all non ground points and a bare earth model can be generated from the remaining

ground points. This data is useful for civil engineering design, base mapping, mine planning, flood risk mapping and volume

calculations.

Adding imageryThe ALS technology is fully integrated with a medium format digital camera. The images collected provide a 10-15cm pixel

size. The imagery is directly geo- referenced using the GPS-INS data and therefore fully aligns with the ALS data with no

photogrammetric control. The ALS data can then be used to ortho-rectify the imagery and to create ortho-photos. This data

is used for base mapping and as a back drop to using the ALS data.

Using ALS dataALS data can be used in many different forms. The point data can be worked with

directly where particular features are to be identified. However it is much more

common to interpolate a surface from the point data. These surfaces can then be

used in GIS or CAD software to aid in the design and /or decision making process.

Another common way to display the data is to generate contours. The generated

surfaces can also be used volume calculations.

• Mining

• Forestry

• Powerline management

• Determine routes for corridor projects

• Civil engineering projects

• Base mapping

• Environmental monitoring

• Coastal mapping

• 3D city modeling

• Telecommunications

• Water management

• Urban mapping

Applications for ALS data

• Typical point spacing of 1.5m

• Typically defines 5000 Ha per hour

• Vegetation Penetration to collect bare earth data

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INTERNATIONALLIMITED