OVERVIEW

LASER SCANNING

Gathering data before laser scanning

Equipment

Benefits of Laser Scanning

COACH DELIVERY BUILDING SCAN

Cost – Laser Scan vs Traditional 2D Survey

Benefits of Laser Scanning & BIM

BUILDING INFORMATION MODELING

(BIM)

BIM Defined

Benefits

BIM MODELS

PROCESS BEFORECAD, PDF, Paper Copy Model Site Verification

ModelSite Verification

ModelSite Verification

Model Etc…

RATIONELLE

GATHERING AS-BUILT DATA BEFORE LASER SCANNING

Tools inadequate for BIM

ProblemsInefficientNot accurateSafety – some locations unsafe to work in or inaccessibleNo data to import into BIM software = data not verifiable

RATIONELLE

FARO FOCUS OR TRIMBLE TX5 3D LASER SCANNER

Distance accuracy up to ±2mm

Range from 0.6M up to 120M

Measurement rate up to 976 000 points/second

Integrated camera – photorealistic 3D color scans with up to 70 megapixels resolution

TARGET SPHERES OR SQUARES*

LAPTOP OR TABLET

Allows for remote control of scanner

EQUIPMENT

BENEFITS

LASER SCANNING IS EFFICIENT

Scans capture up to 900 000 points of data per second. A scan can take as little as 5 minutes.

Less invasive for the client. Can be done with a 1 or 2 man team.

Safer for the scanning team.

LASER SCANNING IS ACCURATE

Within a 25m radius, each scan point is accurate to ±2mm.

LASER SCANNING IS DETAILED

Scan resolution can be as detailed as1 point of data every 3mm.

LASER SCANNING IS 3D

The processed point cloud looks like an exact 3D replica of the building or site.

Building Section from Laser Scan

Space ScheduleNumber Name Space Type Condition Type Area Volume Actual Exhaust Airflow

Specified AirflowSpecified Exhaust Airflow Specified Return Airflow Specified Supply Airflow

101 VEST 1 <Building> Heated and cooled 85 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM102 CORR. <Building> Heated and cooled 133 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM103 MEN'S Restrooms Heated and cooled 148 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM104 STORAGE <Building> Heated and cooled 98 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM105 WOMEN'S Restrooms Heated and cooled 139 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM106 MECH. RM Electrical/Mechanical Heated and cooled 43 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM107 VEST 2 <Building> Heated and cooled 74 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM108 RECEPTION <Building> Heated and cooled 75 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM109 KITCHENETTE <Building> Heated and cooled 125 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM110 LOUNGE <Building> Heated and cooled 346 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM111 SHOWROOM General High Bay - Manufacturing Facility Heated and cooled 6103 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM112 CUST. PRIVY ROOM <Building> Heated and cooled 177 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM113 SHOWROOM OFFICE <Building> Heated and cooled 176 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM115 CLOSET <Building> Heated and cooled 14 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM

PROCESS WITHOUT DRAWINGS

Scan Model BIM

PROCESS WITH DRAWINGS

CAD, PDF, Paper Copy Model Scan

(Verification)BIM

BENEFITSSCAN INFORMATION COMES IN 2 PARTS – POINT CLOUD & PANORAMIC SCAN IMAGES

POINT CLOUD DATA IS SUPPORTED BY MOST BIM SOFTWARE

Scans can be imported directly into the modeling software

POINT CLOUD & BIM ARE 3D

Point clouds can be viewed in plan, section, elevation, 3D perspective & isometric views

Allows us to check the accuracy of the modeling in many different views, even if objects are obscured in some views

FEWER SITE VISITS REQUIRED TO GATHER INFORMATION FOR BIM

All data for Coach Delivery building BIM was gathered in about 4 hours

Information that is unclear in the imported point cloud can be viewed & measured from the panoramic scan images

IMPROVED COORDINATION & ACCURACY

LASER SCAN INFORMATION IS VERIFIABLE. ANY DOUBTS ABOUT ACCURACY CAN BE COMPARED TO THE SCAN.

BIM DEFINED

The National Building Information Model Standard Project Committee has the following definition:

Building Information Modeling (BIM) is a digital representation of physical and functional characteristics of a facility. A BIM is a shared knowledge resource for information about a facility forming a reliable basis for decisions during its life- cycle; defined as existing from earliest conception to demolition.

Traditional building drawings rely on 2D plans, elevations, sections, etc.

BIM is three-dimensional and covers more than just geometry. It also covers spatial relationships, energy & lighting analysis, geographic information, quantities and the properties of building components (manufacturer details, etc.)

Architectural ObjectsWalls, doors, windows, roofs, floors, slabs,

cabinets, furniture, etc.

Structural ObjectsColumns, beams, foundations, footings,

rebar, etc.

Electrical ObjectsReceptacles, switches, panels,

transformers, MCC’s, transfer switches, generators, etc.

Mechanical ObjectsAir handlers, VAV’s, chillers, boilers, pumps,

tanks, coils, ducts & duct, fittings, pipe & pipe fittings, etc.

Plumbing ObjectsToilets, sinks, urinals, hot water tanks,

softeners, etc.

BENEFITS – WORK WITH REAL OBJECTS

In BIM, while working in plan views, you are creating also creating sections, exterior elevations, interior elevations, 3D views and schedules.

Additional views can be taken or created any where in the model and will be generated automatically.

Schedules are populated as schedule objects are added to the model.

Door numbersWindow numbersEquipment ID’s

Different views of the same information.

BENEFITS - PRODUCTIVITY

Improved Accuracy - The accuracy of the model promotes more effective communication between the parties involved in a building project and reinforces understanding.  

Reduced number of errors and changes throughout the design and construction process.  

The parametric capabilities of BIM allow for the consistent, coordinated representation of the model in all views and drawing outputs.

IMPROVED ACCURACY

3D visualization and analysis tools allow for earlier evaluation of the building design and performance by all parties involved.

Building design and performance can easily be changed in the early stages of a project, saving both time and money.

BENEFITS - EARLY DECISION MAKING

DRAWINGS SETS

Tools in the BIM software automatically fill in information that needs to be manually entered and verified in CAD software.

Examples: Section heads, detail numbers, elevation numbers, door and window tags, equipment numbers, etc.

PROJECTSBIM promotes collaboration between

architects, designers, engineers and contractors by working with the same information.

Clash detection tools can be used to resolve conflicts between models before getting to the site.

All parties involved will understand the entire scope of the project.

BENEFITS - IMPROVED COORDINATION

SAMPLE PROJECTS