3d bim model development

MSc BIM & INTEGRATED DESIGN 2015 ~ BIM THEORY AND PRACTICE

BIM Model Development & Analysis

By Iftikhar Ismail

The Regent Site I MediaCityUK Client: Peel Media Ltd. Value: £29m Dates: July 2014 - Ongoing CURRENTLY AT RIBA WORK STAGE 4. A new six storey office building that will consolidate Bupa UK staff into one building. The building draws upon the waterside context to provide a striking office building. Construction of a 13,800 m2, BREEAM ‘Excellent’ office building for up to 2,000 staff. Start on site Jan 2016 subject to Planning Approval.

Images Source: Chapman Taylor Architects MSc BIM & Integrated Design 2015 - BIM Theory and Practice

THE LOWRY

WAR MUSEUM

Bupa Office Building (MediaCity, Salford Quays)

Image Source: Chapman Taylor Architects MSc BIM & Integrated Design 2015 - BIM Theory and Practice

Image Source: tekla.com

> Acquire design approval faster > Eliminate duplication of work

> ‘Real-time’ model-based estimating > Eliminate risk & increase certainty in design

> Seamless transfer of data from design to const. > Information re-used rather than re-created

> Good discipline collaboration = > Fewer design co-ordination problems on site.

collaboration

outcome

Why BIM?

Bupa: PAS 1192-2:2013


Specification for information management for the capital/delivery (CAPEX) phase of

construction projects using BIM.

Technology Assists

Using BIM to direct the Build

Bupa

Used

Image Source: Autodesk.com

Image Source: bimthinkspace.com

Image source:

Chapman Taylor Architects

Scope of Modeling (The Players)


BIM tools can add value to a project in six major ways. “With great apps comes great responsibility” “can be powerful in the hands of those who know how” Andrew Fisher DPR Construction

Image Source: DPR Construction FEDERATED BIM MODELS BY

DISCIPLINE

• Check models against selected rules

• Identify clashes/problems between

components and specified systems

• Adequate pre-planning prior to

project kick-off (EIR/BEP)

Benefits include:

• Reduction in time for 2D

dwg manual clash detection.

• Reduction in changes during

construction (CAPEX) stage.

• Human error minimised.

• Early resolution to design

changes with fewer costs.

Text adopted from MSc BIM Theory &

Practice Report by Siaw Wee Jong Image adopted from: Mimi Zadeh - Quora

Bupa


Image Source: EIR bimtaskgroup.org

Bupa: Information Exchange - Interoperability

Diagram adopted from:

scia.net

Revit interoperability with

fabrication tools, FM &

Civil 3D platforms means

useful data is growing

exponentially….and is

crucial for successful

BIM implementation.

Text adapted from seanfburke.com

Architect Vs Engineer

Image source:

Chapman Taylor

Architects (BEP)

Bupa BIM Model - What’s Included?


Component Schedules

Eg. Doors/windows

2D Construction

Details & Setting-out

Integrated Architectural &

Structural BIM Model

Use a BIM Model

Validation Checklist

Finishes drawings,

Schedules & Costs

2D drawings & details

in ‘split’ BIM model

Image source:



MEP BIM Model completed for

ONE floor only......therefore BIM

model incomplete!

Project Planning (4D/5D)

& Sequencing

‘Real-Time’ Cost

Information

Fire Evacuation

& Simulation

BIM Model-Thermal Analysis

Bupa BIM Model - What’s Missing? Image Source: oasys-software.com

Image Source:

Vicosoftware.co

m

Image Source: thebimhub.com

Images Source: Chapman Taylor Architects MSc BIM & Integrated Design 2015 - BIM Theory and Practice

In the UK, most designers & contractors use Navisworks daily for spatial coordination, and It has good IFC support from software developers. Clients often mandate the use of these tools. On current projects At Chapman Taylor, Navisworks NWD files are required deliverables, along with IFC and (COBie) within the BEP. Navisworks is an integral part of our design process, we clash check and report serious issues to the discipline leads.

Bupa: Clash Detection using Navisworks

Filter clashes by

discipline

1.

2. 3.

Bupa: Clash Detection using Solibri (Solibri Model Checker & IFC Optimizer)


2. Using the Ruleset

Manager to define the

parameters

1. IFC file optimisation

4. Information take-off

to quantify building

elements within model

3. Run soft & hard clash

detection in SMC

Solibri is best for analysis

& measurement, like

Navisworks but with the

added functionality of

a logic/rules-based

checking system.

Andrew Fisher

DPR Construction

BIM Model Image Source: Chapman Taylor Architects MSc BIM & Integrated Design 2015 - BIM Theory and Practice

Bupa: Green Building Studio (Cloud based Energy Analysis)

The Cloud is the Limit!... Autodesk offer 3GB of storage space per seat during initial contract duration.

Good for initial testing and solving issues. The only fall is the accuracy of the information you put into the BIM model. Recommend that BIM models are kept ‘reasonably’ simple. The more detailed the BIM model the greater chance of errors and longer timescales without any substantial better final results. Text adopted from: ebim.co.uk

Images source:


4D BIM - Time & Scheduling


• Simulate & evaluate planned

construction sequence/simulations.

• An excellent tool for revealing

potential bottlenecks on site.

• Expensive process to set-up/manage.

• See and understand the sequence of

construction activities in real time.

• Being able to foresee risks and

potential problems before construction

starts, translates into savings of both

time and money for the client.

• Assists contractors in cost cutting &

enhances productivity on site.

• Speeds up the overall construction

process and decreases construction

time.

Text adopted from: teslaoutsourcingservices.com Image Source: GSA BIM Guide Series 04 (gsa.gov/bim)

5D BIM - Model Based Estimating


"The quality of your cost estimate is

directly linked to the quality of the

data produced by the rest of your

project team”.

(Fred Mills, The B1M)

“Lack of application interfaces

between BIM systems and 3rd party

applications of choice”.

(RICS 2011 Report)

Benefits includes:

3D BIM model combined with cost.

BIM model enables accurate quantity

survey of materials and components.

Objects/Quantities linked directly to

cost databases in BIM model.

Cost implications of design changes

can be produced in real-time.

Image Source: vicosoftware.com Text adopted from: aaceiatlanta.com (Jeff Baker & Mike Bartoli )

Image Source: aaceiatlanta.com (Jeff Baker & Mike Bartoli)


Crime & Maintenance

• Design of light levels for

pedestrians and vehicular access.

• Clear & safe accessibility to and

from the building.

• Maintenance: a passive message

that the building is being cared as

a deterrent to crime.

Epstein, E. (2012)

6D BIM

• Hard FM: maintenance

of the building fabric.

• M/E/P systems: easy,

and portable access to

building information.

Image & Report source:


2D > 3D > nD BIM (BIM Maturity Level 3?)


2D 3D

nD BIM model that incorporates multi-aspects of design information required

at each stage of the lifecycle of a building facility; including scheduling,

costing, accessibility, crime, sustainability, maintainability, acoustics and

energy simulation.

It is an integrated tool that will enable construction stakeholders – across

time zones – to cohesively and comprehensively work within their own

specialised discipline on one model. Text Source: http://www.itcon.org/

Image & drawings source:


BIM Model Limitations & Challenges


Limitations

• Lack of Interoperability (between

design & estimating software.

• IFC interoperability currently at 95%.

• Changes to legal & insurance docs.

• Lack of BIM office protocols/standards

• Initial implementation & set-up costs.

• Skills gap/lack of expertise/training.

Challenges

• Cultural change (resistance)

• Re-inventing the wheel

• Change does not come easy

• Management & control of information

• Perceived costs, heavily front loaded

• Costly & lengthy contract negotiation

processes.

Image Source: bimblog.bondbryan

•Appoint BIM Co-ordinator or BIM

Champion on each project.

•Software/hardware limitations.

• Model ‘splitting’ due to complexity-

Façade separated from walls/floors

• BIM model management: who/why?

• Model-based estimating is a lengthy

process (Tiwari et al. 2009)

Bupa: BIM Model Analysis - Lessons Learned


Image Source: University of Salford-MSc BIM Lecture

More frequent multi-discipline design reviews

at key design milestones.

A common project directory that is live and

accessible by all participants.

BIM Management fees should be considered

when bidding for BIM Projects.

Better communication: face-to-face meetings.

More presence of tradespeople during design

Understand the fabricator software import/export

requirements… “Garbage In = Garbage Out”?

Understanding the true value of BIM as information

rather than falling into ‘Revit’ mind set…been there?

Tracking progress and understanding changes in the

model are difficult to record & maintain (who/how?).

Combining traditional 2D Cad process with 3D BIM is

risky and to be avoided = Model Errors!

Bupa BIM Model - Areas for Improvement


IFC not fully interoperable. Current

maturity at 95% (Graphisoft/Autodesk)

Further investment in training to

develop future BIM champions.

‘Real-time’ BIM drawing register

Quality of BIM model to allow

accurate cost data extraction

Carbon footprint-linking carbon data

Virtual reality headsets for clash-

detection/training purposes (Oculus).

2016 2025?

Text Source: mclachlanlister.wordpress.com (Lucy Guerin)

2016

• Designers to be encouraged to share

incomplete solutions > reducing re-work

• No design change should be considered

‘minor’ (ripple-effect).

• More detail in model=Less field conflicts

References & Bibliography

Background Image: Chapman Taylor Architects MSc BIM & Integrated Design 2015 - BIM Theory and Practice

McBloggin Lister. 2015. BIM Limitations, Impediments to Implementation and its Future. [ONLINE] Available at: https://mclachlanlister.wordpress.com/page/2/. [Accessed 15 Nov 15]. BIM Task Group. 2015. Frequently asked Questions. [ONLINE] Available at:http://www.bimtaskgroup.org/bim-faqs/. [Accessed 24 Oct 15] Bond Bryan Blog : Interoperability Testing IFC2x3. 2015. News. [ONLINE] Available at:http://www.buildingsmart.org.uk/. [Accessed 15 Nov 15]. Standards. 2015. BIM Talk. [ONLINE] Available at: http://bimtalk.co.uk/standards. [Accessed 14 Nov 15]. Sourceable. 2015. Why Architects Need BIM. [ONLINE] Available at: https://sourceable.net/why-architects-need-bim/. [Accessed 18 Oct 15]. Bond Bryan Architects. 2015. Interoperability. [ONLINE] Available at:http://bimblog.bondbryan.com/interoperability/. [Accessed 25 Oct 15]. BIMcrunch. 2015. News. [ONLINE] Available at: http://bimcrunch.com/category/news/. [Accessed 01 Nov 15].

Image Source: BluEnt

Epstein, E. (2012). Implementing Successful Building Information Modelling. MA. Artech House. Page 67. Barnes, P. and Davies, N. (2014) BIM in Principle and in Practice. London. ICE Publishing. Eastman, C., Teicholz, P., Sacks, R. and Liston, K. (2011). BIM Handbook A Guide to Building Information Modeling. 2nd Edition. New Jersey. Canada. John Wiley & Sons Inc. Aubin, P. F. and McClelland, D. (2014). BIM Collaboration with Autodesk Navisworks. Oak Lawn, IL. G3B Press. Jernigan, F. (2007). Big BIM Little BIM-The practical approach to building information modeling. Salisbury, USA. 4Site Press. Garber, R. (2014). BIM Design-Realising the Creative Potential of Building Information Modeling. Chichester, UK. John Wiley & Sons Ltd. Crotty, R. (2012). The Impact of Building Information Modeling-Transforming Construction. Abingdon, UK. Spon Press. Smith, D. K. and Tardif, M. (2009). Buidling Information Modeling-A Strategic Implementation Guide. New Jersey, USA. John Wiley & Sons. Deutsch, R. (2011). BIM and Integrated Design-Strategies for Architectural Practice. New Jersey, USA. John Wiley & Sons Inc.

https://mclachlanlister.wordpress.com/page/2/

http://www.bimtaskgroup.org/bim-faqs/




http://www.buildingsmart.org.uk/

http://www.buildingsmart.org.uk/

http://bimtalk.co.uk/standards

https://sourceable.net/why-architects-need-bim/







http://bimblog.bondbryan.com/interoperability/

http://bimblog.bondbryan.com/interoperability/

http://bimcrunch.com/category/news/


BIM….More is Less!

3d bim model development

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