unit 18: cadd in construction lesson objective be able to explain the use of building information...

Unit 18: CADD in Construction

Lesson Objective

Be able to explain the use of Building Information Modelling

in buildings


Building Information Modelling

Click to viewBasic overview to BIM


Background to BIM

•Increased competitive pressure• Time• Cost• Quality

•Industry alignment • Integrated practices• Greater control over supply team

•Lean Practices• Waste reduction• Off site construction



What are the aims of BIM?

•Faster and more economic delivery of projects with less environmental impact•Create value in every stage of the process (Plan – Design – Build – Manage)•User analysis to optimise sustainability of the life cycle.•Visualise design ideas•Simulate multiple alternatives -Ability to simulate projects before they are built (higher quality outcome)•Identify clashes•Communicate intent - Accurate documentation•Improve productivity - Savings in time and money with improved coordination



• Manufacture• Model• Color• Link to specification• BREEAM Information

Building Information ModellingIn a BIM model the software objects are intelligible to computer programs as representations of real-world building components.

Unit 18: CADD in Construction 8

Building Information ModellingBIM is not software!


Software is a ‘Tool’ not BIM



• Autodesk

– Revit

– Autocad

– Navisworks

• Graphisoft

– Archicad

• Bently

– Bently Arcitecture

– RAM Steel

• Onuma

– OPS

Principal software companies…



BIM is a methodology of gathering and maintaining information about a building for quick decision making throughout the life cycle or facility cycle of the building.

BIM is a Methodology



• Pre design

• Design

• Construction

• Operation

BIM focus: Facility Cycle



Who uses the information from BIM?

• Owners• Planners• Realtors• Appraisers• Mortgage Bankers• Architects• Engineers• Cost & Quantity Estimators• Specifiers• Contracts & Lawyers• Construction Contractors• Sub-Contractors• Fabricators• Code Officials

• Facility Managers• Maintenance & Sustainment• Renovation & Restoration• Disposal & Recycling Scoping,

Testing, Simulation• Safety & Occupational Health• Environmental & NEPA• Plant Operations• Energy, LEED• Space & Security• Network Managers• CIO’s• Risk Management• Occupant Support• First Responders



What is information Modeling?

• 3d Model

• Energy Model

• 4d Model - time

• 5d Model - time and cost

• Business Model

• Financial Model

• Safety plan

• Maintenance plan



Types of Models• Design Models

– Architecture– Civil– Structural– Mechanical– Plumbing– Electrical

• Construction Document Models– Architecture– Civil– Structural– Mechanical– Plumbing– Electrical– Specification

• BREEAM Models– Energy– Day lighting

• Contractor Models– Architecture– Civil– Structural– Mechanical– Plumbing– Electrical– Shop drawing– Material literature

• Facility Management Models



BIM Standards

• National BIM Standard

• UK BIM Standard

• GSA - 3D-4D Building Information Modeling

• AGC - The Contractors Guide to BIM

• U.S. National CAD Standard



Running a BIM Project Guidelines for the development and use of the models Guidelines for Information Management Guidelines for a BIM Execution Plan

Project Participants Models to be used & content Contract & Record Documents Areas of the project Schedule (delivery and updates) Protocols for submission Coordinate system & dimension accuracy File format, naming, structure Software to be used



Protocols Coordination and Conflicts Model Ownership & Requirements File Formats Responsibilities Cost Estimating Scheduling

Level of Development defines content requirements and authorised use Level 100-”used for understanding the requirements ” (Programming) Level 200-”elements modeled as generalized assemblies” (Schematic Design) Level 300- “elements modeled as specific assemblies” (Construction Documents) Level 400-”fabrication, assembly and detailing information (Construction) Level 500 -”elements modeled as constructed” (O&M)

Running a BIM Project



BIM Execution Plan• Set clear goals & objectives across organization & teams

• Increase accountability and productivity

• Standardize your communication methods

• Define roles and responsibilities

• Bind all parties early in the Request For Proposals process

• Control your project costs, schedule, scope and quality



Communication



Integrated Project Delivery



Duct near Grid D4 appears to be going through a beam

Clash Detection



Move unit so that coresponding duct work does not go through the ceiling of the 2nd floor corridor or Director’s office



Facility Data that Could Be Included in BIM Planning scenarios and site information Architectural Program Floor plans Space Functions Classified areas, vaults etc. Area calculations Specifications Contract documents Legal description Change orders Supporting documentation for litigation Shop drawings Procurement documents Progress photographs Alarm diagrams Warranty data Cost Estimates

Invoices Purchases requests Organizational occupants Personnel lists Seating plans Handicap designation Network diagrams Hazardous materials Operating manuals Maintenance records Inspection records Electronic 3d model Simulations Continuation of operations plan Disaster Recovery Plans Contingency plans Furniture inventory




Task

In groups of 2/3 list the advantages and disadvantages of using BIM.

List the advantages and disadvantages of using a 2D CAD package.

Identify who benefits in the team

unit 18: cadd in construction lesson objective be able to explain the use of building information...

Documents

construction bim

bim slide

construction software

bim model

information modeling

construction background

buildings slide

construction lesson