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Construct ion Ver i f icat ion

Using Laser Scanning technology and software

Chris Palmer – Sales Engineer 28th April 2017

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Conten ts

What is construction verification ?

How do we measure and check construction on site today ?

How can Laser Scanning add value to the Construction process ?

Case Study 1: Bradford College

Case Study 2: Bradford ATC

Case Study 3: No.1 Spinningfields, Manchester

Case Study 4: Birmingham City University (In Progress)

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What is Construct ion Ver i f icat ion ?

Why do we need on-site checks

What types of applications require monitoring

How do currently monitor construction

How can Laser Scanning add value

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Why do we need onsi te checks

Main Contractor

Design Team

Client

Avoid Inaccuracies in the realisation of a design by a main contractor and monitor site progress

Provides a feedback loop for the whole project team of any changes that may be, or may have been, necessary onsite which effect construction progress.

Reduce Risk! :

– Benefit to contractor in getting quick identification of potentially costly mistakes which can cause repetition of work. Monitor and quantify sub-contractors work.

– Benefit to design team in avoiding unforeseen design ‘variations’ during construction which have a knock on effect to time and cost.

– Benefit to Client in having better cost certainty and accurate record of built asset.

Can help all parties avoid costly litigation caused by disagreements over time, cost, quantity, quality etc.

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What requi res moni tor ing and why ?

Empty Site / Demolition

Excavations, Utilities

Foundations, Civils, Site

Frame – Concrete, Steel, Timber

Concrete Floors

Exterior Envelope, Cladding, Curtain

WallingMEP Internal Fit Out As Built Condition

• How big?• How much?

• How Deep?• Where?

• Quantity?• Record?

• Exact Position?• Deflection?

• Thickness ?• Flatness ?

• Position?• Verticality?

• Clashes ?• Record ?

• Position ?• Room Areas ?

• Complete Record !

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How do we current ly moni tor construct ion?

Tape Measure

Total Station

Photographs

BIM 360 Field

Drone Footage

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The Theory ……of everyth ing !

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T h e T h e o r y …

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Bradford Col lege

Scanned after Demolition and following Landscaping

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BAM Construction project, designed by Bond Bryan Architects with FARO involved in R&D sub-project to carry out scans during the demolition of the old College building and landscaping of the site.

The aims of project were:

Find a way to quickly calculate rough volumes for site materials.

Calculate cut and fill of site retrospectively upon completion of landscaping.

Bradford Col lege

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Laser Scanning End-to End Workf low

Capture Process Create

Clean Up

Quantification

Registration

Isolate

& Extract

Civil Works

Modelling

Volume App

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Volume Extract ion in Autodesk Civ i l 3D

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Bradford ATC

Three Storey Steel and Concrete Frame

Scanned During Construction and after completion

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▪ 4D point Cloud consists of 30 Scans during Construction. 166 After Completion.

▪ Modern methods of automated target less registration depend on scan overlap and similarity of features.

▪ Scanning overtime throws this on it’s head as everything is different and constantly changing.

▪ Registration of scans taken over time is therefore larger dependant on known co-ordinates and planes / points which can be created on surrounding geometry.

Bradford ATC

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.RCP Export

Register Scans, apply control, define coordinate system

Externals.rcs

Import each .rcsindividually in Navisworks

or back into recap to group as an RCP file

Batch import for file size manageability /

clean up, create regions and export

Ground Floor.rcs

First Floor.rcs

Central Stairwell.rcs

Second Floor.rcs

Structural Frame (Areas A – D).rcs

Search sets don’t work on Point Clouds so manual segmentation is critical for data management

and clash result validity

Opt imis ing the Recap Fi le

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Dur ing Construct ion Scans

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Data Segmented in Autodesk Recap

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Extracted & Unif ied Structural Frame

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4D Laser Scans in Recap

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C l a s h D e t e c t i o n – D e s i g n M E P v s A s B u i l t S t e e l

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We b s h a r e h y p e r l i n k s w i t h i n A s B u i l t B I M

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4D Webshare Cloud Project

Project created

retrospectively, however

could be created

throughout project if

coordinate system

defined at the outset.

During construction

scans as .cpe file = 1.5gb

As Built Scans as .cpe

file = 14gb

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No.1 Spinningf ields

Concrete Floor Flatness and Beam Deflection

Mixed Reality views

SKUR model accuracy analaysis

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Scan and Model Al ignment

Scan registered to site coordinates rather than design coordinates

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Concrete Floor F latness

Created using

the Rithm Apps

available on

the FARO App

store

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Beam Def lect ion Analys is

Created using

the Rithm Apps

available on

the FARO App

store

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Navisworks model in to Scan View

Created using

.NWD file and

Recap 360 Pro

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SKUR Analys is

Cloud Based Service

Uses .pts and .e57 scan formats and .dwg

Produces layered heat map Point Cloud

Colourises .dwg based on deviation

Produces difference report with breakdown of results

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SKUR Analys is

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SKUR Analys is

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Birmingham City Universi ty

In Progress…..

VR Site Progress checks ?

AR mixed Reality checks ?

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Any Quest ions ?