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BIM Project IT Guidelines Carl Agar – Director Norman Disney & Young July 2011.

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Presentation on theme: "BIM Project IT Guidelines Carl Agar – Director Norman Disney & Young July 2011."— Presentation transcript:

1 BIM Project IT Guidelines Carl Agar – Director Norman Disney & Young July 2011

2 The Scenario BIM Project All drawings to be in 3D Federated models being produced Federated models being used for meeting reference Need to share model files via internet PM system

3 What do will you need Fast workstations Central storage Good backup Fast internet connection 3D modelling software e.g. Revit Federated modelling software e.g. Navisworks

4 Model Generation & Integration Process

5 Model Setup & Standards Project Filing Structure Location & Orientation Project Levels & Grids Site Segmentation Stakeholder Models Structure Federated Models Structure Model Authorised Uses Required Levels of Development & Authors Model Naming Protocol Document Naming Protocol Room & Space Naming Protocol Element Classification System Equipment Naming Protocol System Naming Protocol Asset Naming Protocol Material Naming Protocol Object Parameters Visualisation Requirements Construction Sequencing (4D) Cost Estimation Modelling Practices (5D) Data Collection, Release & Transfer Coordination & Clash Detection Cad Package Specific BIM Plan Requirements

6 Model Setup & Standards Project Filing Structure Location & Orientation Project Levels & Grids Site Segmentation Stakeholder Models Structure Federated Models Structure Model Authorised Uses Required Levels of Development & Authors Model Naming Protocol Document Naming Protocol Room & Space Naming Protocol Element Classification System Equipment Naming Protocol System Naming Protocol Asset Naming Protocol Material Naming Protocol Object Parameters Visualisation Requirements Construction Sequencing (4D) Cost Estimation Modelling Practises (5D) Data Collection, Release & Transfer Coordination & Clash Detection CAD Package Specific BIM Plan Requirements

7 3D Model Files Storage Backup Moving

8 3D CAD – How big are the CAD files? 115 Batman Street– 3,000m 2 office building

9 3D CAD – How big are the CAD files?

10 115 Batman Street– 3,000m 2 office building

11 3D CAD – How big are the CAD files? DisciplineRevit File Size – Mb Architectural14 Mb Fitout43 Mb Mechanical36 Mb Hydraulics16 Mb Electrical40 Mb Fire22 Mb TOTAL171 Mb Federated Model File (Navisworks)23 Mb 115 Batman Street– 3,000m 2 office building

12 3D CAD – How big are the CAD files? SAHMRI – 28,000m 2 laboratory

13 3D CAD – How big are the CAD files?

14 SAHMRI – 28,000m 2 laboratory

15 3D CAD – How big are the CAD files? DisciplineRevit File Size – Mb Architectural124 Mb Fitout28 Mb Facade100 Mb Structural98 Mb Civil11 Mb Mechanical147 Mb Hydraulics95 Mb Electrical61 Mb Fire30 Mb TOTAL695 Mb Federated Model File (Navisworks)82Mb SAHMRI – 28,000m 2 laboratory

16 Moving Files Around Internally Externally

17 Device & Networks Transfer Rates DeviceSpeed Mbytes/sec Fibre Channel2,000 SATA [1.0] Disk Drive1,500 SATA [3.0] Disk Drive3,000 FireWire 800800 USB 2.0640 WIFI (802.11g)54 Internal Network100 or 1,000 Internet connection2 - 10 NBN100 – 1,000

18 Getting the Data to the Internet

19 Network Download Speeds DeviceRated Line Speed Download Speed ADSL Wireless Satellite 1 Mb/s Wireless 3G1.5 Mb/s Next G 3G7.2 Mb/s NDY10 Mb/s 6 Mb/s in Aus 1 Mb/s to NZ ADSL214 Mb/s ADSL2+24 Mb/s Cable30 Mb/s

20 Network Download Speeds - Theory DeviceRated Line Speed Likely Download Speed 3,600m 2 Project 171Mb of Files 28,000m 2 Project 695Mb of Files ADSL Wireless Satellite1 Mb/s0.6 Mb/s4m 45s19 m Wireless 3G1.5 Mb/s0.7-1.25 Mb/s4m16 m Next G 3G7.2 Mb/s21m 25s6 m NDY10 Mb/s6Mb/s29s2 m ADSL214 Mb/s8.421s1m 23s ADSL2+24 Mb/s14.412s48s Cable30 Mb/s1810s39s NBN100 Mb/s1002s7s

21 Network Download Speeds - Measured FilesSourceRated Line Speed Measured SpeedDownload Time 150Mb Project File Aconex 10Mb/s500Kb/s5m 4Mb Project File Builder 4Mb/s162Kb/s25s 695Mb Project Files500Kb/s24m 171Mb Project Files500Kb/s5m 23s 695Mb Project Files162Kb/s1h 13m 171Mb Project Files162Kb/s18m

22 Computers How Fast

23 Processor Speed Limits Practical limit of ~3Ghz clock speed reached in 2003 Manufacturers turned to hyperthreading & multicore architectures Multicore is running two or more actual CPUs on one chip Concurrency is the next major revolution in how software will be written. HOWEVER - CAD is not concurrent - yet

24 Computer Specifications - Considerations Moores Law – computing power doubles every 2 years What Andy giveth, and Bill taketh away CAD is single treaded – only uses one processor core RAM – rule of thumb – RAM usage will be file size x10 Operating System XP – 32bit has 3Gb memory limit W7 - 64 bit has 16Eb memory limit

25 Workstations - How much memory? RAM – rule of thumb – RAM usage will be file size x10 Test - 150Mb Revit file 150Mb file expanded to 1.6Gb RAM 8Gb will do 12Gb to be future proof Workstation memory usage, OS + Revit 2.65Gb Workstation memory usage, OS + Revit + 150Mb project File 4.22Gb

26 Workstations - How fast? CAD is single threaded HP Workstation – Intel Xeon CPU 3.2Ghz – 4 core processors Revit running flat out to export a file Only 50% of one processor active

27 Workstations - How fast? CAD is single threaded HP Workstation – Intel Xeon CPU 3.2Ghz – 4 core processors Revit running flat out to render an image ALL processors active

28 Computer Specifications Specification Processors Intel i7 > 2.3 GHz RAM 12Gb (8Gb will suffice) Graphics Cards 1Gb RAM on AutoCAD Approved list Operating System Windows 7 64 bit Disk capacity 200Gb+ Disk Type SSD or SATA 2 or 3 Network cards 1Gb/s Screen 1 x 27 + 1 x 19 Budget $3k - $4k

29 Construction Sequencing – 4D Federated model software – e.g. Navisworks or Navigator Name, identify and classify components and systems correctly Indentifying components with a phasing parameter assists Model for construction – e.g. Draw a slab as it will be poured Interfaces to project management software, or Spreadsheet, or Can contain the sequence in the federated model file

30 Cost Estimating – 5D Generally done by interface to the source 3D files, not federated model e.g. CostX uses a DWF export Name, identify and classify components and systems correctly Degree of accuracy needs to be consistent across project Assists if the QS parameters are applied to equipment: Australian Cost Management Manual – Guidelines for Cost Planning Consulting Services Can be fiddly to get the export correct – test your files with the target software – CostX have a free viewer

31 Animations Federated model software – e.g. Navisworks or Navigator Done using similar techniques as 4D construction sequencing Name, identify and classify components and systems correctly Can be done on a good quality workstation

32 Simple Rendered Images

33 Simple to do in 3D modelling software Helpful if correct materials and colours applied to systems Not photorealistic Can be done on a good quality workstation

34 Photorealistic – Physical Based Rendering Fluorescent Downlight LED Downlight

35 Photorealistic – Physical Based Rendering Basis is a well constructed 3D model Materials need to be correctly applied Name, identify and classify components and systems correctly Single image will tie up a workstation – e.g. 22 hours Needs high end render farms

36 Software Upgrades Beware the software upgrade Annual releases Often cliff upgrades Need to upgrade across the project team You may been multiple versions to handle different projects Average large project will need 3-5 software upgrades of all project files.

37 In Summary Fast workstations Fast network Central storage Good backup Fast internet connection – cannot be too fast Be aware of the impact of software versions

38 Thank You


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