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BIM TECHNOLOGYMethodology and WorkflowHolger de GrootRegional BIM Director, Architect

Holger de Groot

Ingo KittelOffice BIM Manager, Draughtsman

Ingo Kittel

This presentation defines the BIM technology as a process thatdescribes the development and use of intelligent 3D models for thepurpose of communication and information.

As a BIM-authoring CAD software, the application of Revit Architectureis presented and explained in context to the service phases 1 to 6 ofthe German HOAI by using practical example.

Class Summary

The Key Learning Objectives of this Presentation are:

q The Definition of BIM Technology

q The Structure of BIM Execution Plans

q The Application of Revit in Phase 1-6

q The Virtual Coordination Workflow

q The Clash Detection Workflow

q The Benefits of BIM Technology

Key Learning Objectives

BIM TECHNOLOGYBuilding Information Modeling

q CAD simply describes the process of usinga computer to draft technical drawings.

q Traditionally stored in multiple files andplaned within a 2D environment.

q High risk of different interpretations.

q Many CAD software applications alreadyallow to design and plan within a 3Denvironment.

q Possibility to improve the error-freeinterpretations.

2D Design versus 3D Design

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Intelligent 3D Design

Non-Graphical Information Graphical Information

BM = Building ModelI = InformationBIM = Building Information Model

Building Information Modeling

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BIM is a term which represents three separate but linked functions:

q Building Information Model: Is the digital representation of physical and functionalcharacteristics of a facility. As such it serves as a shared knowledge resource for informationabout a facility, forming a reliable basis for decisions during its life cycle from inception onwards.

q Building Information Modeling: Is a business process for generating and leveraging buildingdata to design, construct and operate the building during its lifecycle. BIM allows all stakeholdersto have access to the same information at the same time [...].

q Building Information Management: Is the organization and control of the business processby utilizing the information in the digital prototype to effect the sharing of information over theentire lifecycle of an asset [...].

BIM versus Traditional Planning

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Impact Costs Costs of Changes

Traditional PlanningBIM-based Planning

Cost Benefit

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BIM versus HOAI 2013

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25%

5%

10%

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20%

Fees according to HOAI2%

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Traditional Planning

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BIM TECHNOLOGYBIM Execution Plan (BxP)

BIM Requirements: Client / Owner

q Project and BIM goalsq Type of BIM Executionq Data Exchange Requirementsq Data Management Requirementsq Quality of BIM Execution

BIM Execution: Contractor

q Roles and Responsibilitiesq Cooperation and Processesq Data Management Systemq Software Solutionsq Quality Management

Authoringof the BIM

Execution Plan

BIM Models

AuthoringIntegration

Requirements and Execution

Project Goals Statement

q Project orientated work-sharing (BIM Level)

Project Priorities List

q Preparation of planning documents

q Optimising the planning process

q Optimising costs

BIM Vision

q Clash detection during the planning process

q Generating qualified room datasheets (COBie)

q Generating window and door schedules (COBie)

Project and BIM Goals

BIM Execution

BIM Implementation

q Project-specific implementation

q Requirements for coordination and communication

q Definition of general requirements

BIM Use Matrix

q List of BIM uses as contracted

q Definition of additional BIM uses

Model Contents

q Establishing a model element author chart (MEA)

q Defining a model based level of development chart incontext to the project delivery (LOD)

Roles and Responsibilities

Traditional project roles and responsibilities

q Project Controller

q Project Manager / Project Architect

BIM specific project roles and responsibilities

q Regional BIM Director

q Office BIM Manager

q Project BIM Manager

q Model Manager

q BIM / CAD Technician (US: Revit Champion)

q BIM Content Manager

BIMDatabase

Cooperation and Processec

Team Configuration

q Organisation chart

BIM Process

q Overall process diagram

q Process agreement

Model Specification

q Model Structure Map

q File Coordination Matrix

q Model Element Authors (MEA)

q Level of Development Definitions (LOD 100-500)

BIM

Management

Construction

FacilityManager

Client

Architect

LandscapeArchitect

StructuralEngineer

MEPEngineer

SiteManager

BIMDatabase

Data Management

File exchange and issuing documents

q Deliverables Matrix

q Social BIM / Non-Social BIM

q Open BIM / Closed BIM

Existing Conditions

q Measuring units and coordinating systems

q Naming conventions in the model

Standards

q BIM Standards & Guidelines

q CAD Standards

Software

Technology and Infrastructure

q BIM-authoring CAD software solutions

q Virtual Desktop Infrastructure (VDI)

q Social BIM (Autodesk Revit Server)

q Non-Social BIM (Delivery: Dead-Models)

Data Management System (DMS)

q Project Server / Platform

q Naming conventions

q Filing structure / Archiving

Data Exchange and Formats

q RVT, NWD, IFC (2x3), DWG, DWFx, PDF, etc.

Quality Management

Quality Control

q Quality Control Requirements

q Quality Control Review Schedule

Types of Quality Control

q Visual examination (graphical information)

q Checking the parametric (non-graphical information)

q Design intent is properly implemented (standards)

q Completeness check (data exchange)

Checking the model integrity

q Clash detection (Design Coordination)

BIM TECHNOLOGYWorking with Revit Architecture

Establishing the Basis of the Project

Existing Data Room Layout IFC ModelsPreparation of Data

Preliminary Design

LOD 100: The model element may be graphically represented in the model with a symbol orother generic representation, but does not satisfy the requirements for LOD 200. Informationrelated to the model element (i.e. cost per square meter, tonnage of HVAC, etc.) can be derivedfrom other model elements.

Final Design

LOD 200: The model element is graphically represented within the model as a generic system,object, or assembly with approximate quantities, size, shape, location, and orientation. Non-graphic information may also be attached to the model element.

Planning Application

LOD 300: The model element is graphically represented within the model as a specific system,object or assembly in terms of quantity, size, shape, location, and orientation. Non-graphicinformation may also be attached to the model element.

Execution Drawings

LOD 350: The model element is graphically represented within the model as a specific system,object, or assembly in terms of quantity, size, shape, orientation, and interfaces with otherbuilding systems. Nongraphic information may also be attached to the model element.

Preparation for Contract Placement

Import

BIM TECHNOLOGYVirtual Coordination

BIM Management Workflow

LPH 1 LPH 2 - 4 LPH 5 LPH 6 - 9

BIMGoals

BIM ModelsAuthoring &Integration

BIMCoordination

Authoringthe BIM

ExecutionPlan (BxP)

ConceptDesignModels

TechnicalConstruction

Models

ClashDetection

NWD / DWFx

IFC/RVTFM Models

4D TimeInitialization

5D CostInitialization

BIMProduction

ExecutionPlans

DWG / PDF

“As-Built”Updating

“As-Built”Models

FM + O&MEnrichment

Georgia Institute of TechnologyCarbon-neutral Energy Solutions Laboratory, Atlanta, USAq Costs: 17 Mio. €

q SF: 4,180 m²

q Prefabrication

q 5D Estimating

q COBie Data Integration

q BIM to FM Turnover

q Virtual Coordination

q Clash Detection

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BIM TECHNOLOGYClash Detection

Usage and Types of ModelsClash Detection Linked Models

Type of Usage

q Working Models(BIM-authoring CAD Software)

q Evaluation Models(BIM Evaluation Software)

Type of Model

q Urban Information Model (UIM)

q Landscape Information Modell (LIM)

q Architectural Information Model (AIM)

q Structural Information Model (SIM)

q Building Service Information Model (BSIM)

q Facilities Information Model (FIM)

NavisWorks

q Clash detection is an important and integral partof the BIM technology

q Clash detection arises out of the fact that there isnot just one model, but several

q Each discipline creates a model, independently ofall the others, based on the regulations that havebeen agreed to during the preparatory stage

q Authors of conflict elements will be notified at anearly stage

q Usually, the term “clash-reviewed” and“coordinated” is used - not “clash-free”

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Integrated Workflow

BIM Manager

Architect

Structural Eng.

MEP Engineer

Architect Architect

MEP Engineer

Structural Eng.

BIM Manager BIM ManagerBIM ManagerBIM Manager BIM Manager

Architect

Structural Eng.

MEP Engineer

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ChangeManagement

ChangeManagement

ProtocolClash Detection

PreliminaryClash Detection

BIM TECHNOLOGYBenefits of BIM Technology

Benefits for Data Management

CAD / BIM Materials Coordination Time Scheduling Project Controlling

Benefits for Data Management

CAD / BIM Materials Coordination Time Scheduling Project Controlling

ModelModelMassingMassing3D Clash4D Time5D Costs

CalculationScheduling

Construction

CalculationScheduling

Construction

ModelMassingMassing3D Clash3D Clash4D Time4D Time5D Costs5D Costs

MassingMassingModelModelModel

3D Clash4D Time4D Time5D Costs5D Costs

ResourcesPrognoses

Reports

ResourcesPrognoses

Reports

ModelMassing

CalculationScheduling

Construction

CalculationScheduling

Construction

Benefits for Architects and Engineers

q New possibilities and potential throughinterdisciplinary collaboration

q Improved communication in decision-making andplanning processes

q Improved coordination in decision-making andplanning processes

q Improved data quality based on a redundant datamanagement system

q Clear model based definition of deliverablesbetween all disciplines

q Comprehensible presentation and simulation ofalternative design solutions using the 3D model

Engineer

BIM TECHNOLOGYSummary

Conclusions

q Define clear expectations and goals at the beginning

q Clear differentiation between BIM goals and traditionalplanning goals based on the HOAI (shift of effort)

q The key factors are collaboration and communication

q Promotes more efficient designs

q Promotes more collaborative and efficient workflows

q Allows for critical and cost saving decisions to be madeearlier during design

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