bim fundamentals - unit 2

7/30/2019 BIM Fundamentals - Unit 2

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This set of slides is intended for the use of the individual. If you are not the intended recipient responsible for delivering it to the intended

recipient, are hereby notified that any use, dissemination, distribution or copying of this communication is strictly prohibi ted.

Specialist Diploma inBuilding Information Modeling (BIM)

BIM Fundamentals

BM3801

Lecture 2


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BIM Concepts & Basics Model Development & Project Phases

Uses of models, Quality & Management

Collaboration & Coordination, Software & Tools BIM in the Real World

BIM Fundamentals Summary


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Finish up some basic concepts Types of Models

Design, Documentation, Construction,Coordination

Modeling & Project Phases

Level of Development (LOD) & ObjectData Level

Model Development & Project Phases


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Models are created for a wide range ofpurposes, where for in-house use or forcoordination and contract purposes. This rangeincludes:

Visualisation, communication and coordination

Data extraction

Document production

Simulation and analysis Significant impact upon content and detail of objects

in model

Uses of Models


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Types of Models

Not all models are created equal.

Design Modeling

Documentation Modeling

Construction Modeling

Coordination Modeling

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Design Modeling

Establish Design Intent

Architects

Emphasis on visualization rather than

accuracy Engineers

Used in Analysis

Not particularly useful for collaboration &coordination

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Design Modeling

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Design Modeling

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Design Modeling

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Design Modeling

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3d model developed expressly for purpose of2d documentation

Essence of what Revit does

Process can involve migration of DesignModel from 3d program to 2d drafting platform

Model should be accurate

Project coordinates & Element sizes

Appropriate for sharing in a collaborativecoordination environment

Can be an essential tool for complex building12


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Construction Modeling

Accuracy is PARAMOUNT

Model intended for use in construction &fabrication

Generating 2d drawings is not a key priority, Model can be used to generate shop drawings

Fundamental difference in HOWand WHY

the model is created

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Construction v. Design Model

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Wall Modeled as asingle element

Column Modeled asa single element

Slabs cut-off at wall

Built in response tohow architects thinkabout Design


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Construction v. Design Model

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Wall Modeled byfloor level/as built

Column Modeled byfloor level/as built

Slabs support walls

Built in response tohow the structure isintended to beconstructed


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An Activity based upon previously createdmodels

Either Documentation Models or ConstructionModels can be used.

Created by Architects or Engineers or Buildersor Trades

Discipline v. Aggregate Model

Discipline is specific, Aggregate is combined For use in

clash detection, data extraction, programcheck, timeline simulation, etc.


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The point

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Not everybodys model is the same.

What matters is keeping the GEOMETRYconsistent.

Tracking design development and change isthe true challenge of BIM

Understanding what you are doing in thebeginning will guide you in selecting software,knowing how long it will take and howdetailed of a model you need


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You cant just make the soup right, you have to

also be sure you are making the right soup!


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Building Design Process and BIM ModelDevelopment process are linked

This link is built upon the Level of Development(LOD) concept


Design & Build Process


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3. Modeling Development Project Phases

Model development phases can be split into thefollowing phases:

Briefing / Pre-design

Conceptual design

Schematic Design

Developed design

Contract Documents

Construction Post Construction / Facilities Management


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Denmark Standards Singapore Submission Process

0 Site/Inventory BIM

1 Space BIM Provisional Permission (PP)

2 Sketch Design BIM Provisional Permission (PP) /

Written Permission (WP)

3 Developed Design BIM Written Permission (WP) / Building Plan (BP)

4 Tender BIM Building Plan (BP)

5 Construction BIM Building Plan (BP)

6 FM BIM Completion of Statutory Clearance (CSC)

Project Phases


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International efforts to define projectstages/phases to assist industry standards fordigital exchanges have been based on the workof Salford University in their Process Protocol.

It has been used to describe the building lifecycle ISO-Standard: 11 project Phases inProject Life Cycle, Process Protocol in Draft ISOStandard

(Salford University www.processprotocol.org)

Project Phases & ISO


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W ISO 15686-10:2010(E) Table 1-Phases andstages of the whole life of a building or building-related facility

Portfolio management

Portfolio operations

0.1 Portfolio strategy0.2 Portfolio requirements

0.3 Portfolio initiation



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Pre-project stages1 Conception of need

2 Feasibility

3.1 Authorization

3.2 First procurement



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Project delivery 4 Initial or outline conceptual design

5 Preliminary design

6.1 Detailed (coordinated) design

6.2 Construction procurement

7 Production Information

8.1 Construction

8.2 Commissioning



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Property management 9.1 Asset operations

9.2 Maintenance and condition management

9.3 Occupants facility management

9.4 Refurbishment, adaptation, alteration, changeof use

9.5 Change of functional use by occupant



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Disposal Status change

10.1 Disposal preparation

10.2 Transfer

10.3 Reinstatement

End of life

10.4 Decommissioning

10.5 Deconstruction

10.6 Recycling

10.7 Demolition



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WOverall Enterprise

Asset, Property andFacility Management

Information Base

of Shared Data

and Support Data

(BIM or Building

Information Model)

Based in part onDana K. Smith diagram for FIC of NIBS, 2000

DemandPortfolio Management

Project Delivery

1.0 Conception of Need

2.0 Outline Feasibility

3.0 SubstantiveFeasibility

4.0 Initial or OutlineConceptual Design

5.0 Full ConceptualDesign

6.1 Detailed(Coordinated) Design

6.2 Procurement

7.0 ProductionInformation

8.1 Construction

8.2 Commissioning

0.3 ProjectInitiation

9.1 InformationModel (BIM)

9.4 Occupants FacilityAdministration

9.2 Operations

9.6 Change of FunctionalUse by Occupant

10.5 Reinstate

0.1 Owners Portfolio Requirements

0.2 Clients Requirements

9.3 Maintenanceand ConditionManagement

9.5 Refurbishment,Adaptation, Alteration,Change of Use

2000, 2001, 2008 International Centre for FacilitiesDiagram by Franoise Szigeti and Gerald Davis

10.4 Transfer

10.3 Deconstruct

10.2 Decommission

10.1 DisposalPreparation

Occupancy and Use



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You will never think about it in your work again.

But the concept is very important:

The Truth About ISO

As the building design process

progresses, the information in a

BIM model changes to addresschanging needs.


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Detail levels is a useful concept for obtainingagreement about content of objects at differentstages.

This will be necessary when defining the extentof information required at formal exchanges.

What is Object Content Material, Size, Amount of detail related to

parametric information

Object Data Level


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Level A or 100

- Strategy and performance criteria based on volumesand areas

- Planning activities, concept development

- Non-geometric, briefing data or line work, areas,volumes zones etc.

- Block model

- Conceptual cost allowance (e.g. $ per m2 of floor

area, $ per hospital bed, $ per parking space) - Total project construction duration or phasing of

major elements

- Environmental requirements

Object Data Level


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Level B or 200 - Generic objects in visualisation/concept models to

allow for digital prototyping

- Generic elements shown in three dimensions with

maximum size, and assumed system types - Preliminary time scale ordered for appearance of

major activities

- Estimated cost based on measurement of generic

element (e.g. generic interior walls or doors) - Specific room requirements can be attached

- Approximate quantities of materials for preliminaryenvironmental analysis

Object Data Level


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Level C or 300 - Specific objects in detailed model, engineering design for digital

prototyping

- Specific elements confirmed 3D object geometry, dimensions,materials, capacities, connections

- Time-scaled, ordered appearance of detailed assembliesEstimated cost based on measurement of specific assembly(e.g. specific wall type: 70 interior steel studs with 10 paintedplasterboard both sides)

- Precise quantities of materials with percentages of

recycled/locally purchased materials - Accurate analyses and simulations based on specific building

assemblies and engineered systems for engineeringcalculations, visualisation clash detection, constructionsequencing, cost planning and estimating

Object Data Level


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Level D or 400 - Detailed objects in production model for shop

drawing/fabrication for purchase, manufacture,installation, specified fabrication and assembly

detail including construction means and methods(cranes, man-lifts, shoring etc.)

- Specific manufacturer selections

- Precise analyses and simulations based on

specific manufacturer and detailed systemcomponents, committed purchase price ofspecific assembly

- Manufacturing logistics procurement

Object Data Level


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Level E or 500 - As-built objects for operation and FM, actual

record costs, purchase documentation

- Commissioning and recording of measured

performance - Maintenance and operation requirements

- These object detail levels may correspondclosely with model development levels intraditional practice, but should be varied to suit

alternative project delivery methods

Object Data Level


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Singapore Standard is based upon theseideas

Object Data Level

USA

AIABIM Level of Detail AustralianObject Data Levels

100 Conceptual A Volume & Area

200 Approx. Geometry B Generic ObjectElements

300 Precise Geometry C Specific Elements

400 Fabrication D Detail Objects

500 As-Built E As-Built Object


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Why is this important?

Effort required

Staffing needs

Scope of work

Payment Schedule

Managing Design Change

Choosing Software

?

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Why is this dangerous

People get caught up in this and take theireyes of whats important in the project:design, collaboration and how we are goingto get this done!

Beware the subjective nature of LOD! Enduring differences between the needs of

Architect, QS, Engineer and Builder can

make this a pit of quicksand http://www.architecture-

tech.com/2011/12/protect-fluffy-kittens.html

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Guess That LOD!!!!

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G O


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Guess That LOD!!!!

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G Th LOD!!!!


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Guess That LOD!!!!

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G Th t LOD!!!!


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Guess That LOD!!!!

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Th St


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The Star

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Th St


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The Star

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Th St


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The Star

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Th St


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The Star

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The Star

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Th St


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The Star

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Th P i t


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The Point.

Development does NOT equal Detail!

This concept refers to accuracy and the amount of

information which is both possible and reasonable fora model to reflect at any given stage of the design

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As the building design process progresses,the information in a BIM model changes to

address changing needs.