SurePoint - BIM on Site

David Grant

SurePoint Australasia Pty Ltd

“Technology drives business only when it’s implemented. SurePoint’s mission is to provide

practical BIM tools and achievable solutions with a focus on the construction site.

 

Today’s Agenda

Introduction The BIM on Site Cycle Why use BIM on Site? Reducing Wasted Effort BIM on Site Solution Layout with a RTS (Robotic Total Station) 3D Scanning Overview

The BIM on Site Cycle

Why use BIM on site?

Minimise Wasted Effort

What does rework cost? Rework costs were obtained from 161

Australian construction projects Average direct cost found to be 6.4% of the

contract value and indirect costs were an additional 5.6% = total 12% of contract value!

(A Rework Reduction Model for Construction by Peter E D Love, Zahir Irani and David Edwards)

Factors that lead to rework

30% for design error 46% from error in construction execution

1. Setting out errors

2. Inadequate supervision

3. Staff turnover

4. Low skill level

Other reasons are poor or incompatible materials, damage to other trades, weather etc

(QUT Investigation into the relationship between rework and site supervision in high rise building construction)

BIM on Site Solution Extract point data directly from the 3D model Have all trades utilise the same highly visible network of

control points....as shown Supply layout kits to all subcontractors

along with detailed layout training. These layout kits and workflows are so

easy to use that a SurePoint surveyor is only necessary for training, supervision, and QA purposes.

Any sub-contractor can do it...as we have proven with many subs to date.

Plumbers on the Gold Coast Hospital“What the Trimble does is it picks up other trades anomalies, partition walls, form workers etc which enables us to adjust if required. We work in with the Surveyors onsite who give us grid intersections and off we go. I’m proud of my team of Plumbers who have been keen to adopt this new technology. The Trimble has led to near zero rework...an outstanding result!”

Mark R HayesProject Manager GCUHBeavis Bartels

Duct installers on 111 Eagle St“The mechanical system on this project is extremely complex...we must locate as many as 540 points per floor to direct the installation of the ducts, hangers and pipes—and we must do it very quickly to minimise contractor traffic on each floor and increase efficiency during construction.” The MEP Kit creates perfection. It ensures 100% install per design since every point is accurately located onsite precisely as directed in the model. It negates all clashes with other services.”

Peter SzachSite Manager - 111 Eagle StTriple M

Example highly visible control point

How lay out is done with a Robotic Total Station

Lay Out Points On The Deck From Above

An example of Hilti inserts

Lay Out Points On The Deck From Below

Steps to achieve BIM on Site

1. Clash detect and co-ordinate model (onsite BIM manager)

2. Specify…Surveyor to provide highly visible network of public control points

3. Specify…all subs to use Total Stations for Layout (This will ensure consistency of hardware and data for both onsite layout and data import and export purposes to the model.)

4. QA subs layout reports5. Supply layout data to populate the as-built with

actual x,y,z co-ordinates6. Goal - an intelligent as-built model for handover and

facilities management purposes

3D Laser Scanning - Overview

3D Laser Scanner

High speed scanning– 54,000 pts/sec

360 x 300 field of view WAVEPULSE technology

– Combined phase & pulse measurement technologies

High accuracy measurement– 2 mm accuracy over the entire operating

range (0.5 m – 80 m)

Market Opportunity

Laser scanning has immense opportunity in Building Construction

Renovation and Adaptive Re-use projects are key opportunities

Biggest use will be by Head Contractors and MEP sub-contractors

Quickly collect as-builts of existing structures and MEP systems

3D Scanning – Commissariat Store Brisbane

In early 2011, a 6 metre high stone wall built by convict labour in 1828 on the site of the oldest building in Queensland, the Commissariat Stores, collapsed. Its reconstruction requires an accurate model of the profile of the existing site conditions to enable the design of the additional support required.3D scanning technologies have now reached a stage where the site conditions can be modelled quickly and affordably to enable the engineers to progress their design for the reconstruction of the wall.Thomas FussellExecutive DirectorProject Services Queensland

Questions?