Innovative BIM Solution For Project Management And Quantity Surveying Mr. Ken Leung, Product Specialist, Exactal Ltd. HKIBIM-CIC BIM Conference 2014 Date: 29-Oct-2014 (Wed) Time: 9:30 a.m. – 5:00 p.m. Venue: Room 201 B & C, Asia World Expo, Hong Kong International Airport, Lantau, Hong Kong Organizers: The Hong Kong Institute of Building Information Modelling (HKIBIM) http://www.hkibim.org Co-organizers: The Construction Industry Council http://www.hkcic.org HKTDC Hong Kong International Building and Hardware Fair http://www.hktdc.com/fair/hkbdh-en/HKTDC-Hong-Kong-International-Building-and-Decoration-Materials-and-Hardware-Fair.html The HKIBIM - CIC BIM Conference 2014 is the 5th Annual Conference organized by the Hong Kong Institute of Building Information Modelling (HKIBIM). It is the premier annual event for experienced AEC professionals to demonstrate the practical use of Building Information Modelling (BIM) processes using real cases. The speakers will illustrate lessons learned in practical projects so that others can improve their efficient use of BIM and advance practical knowledge.

1. Introduction to Exactal and CostX

2. What is BIM ?
BUILDING INFORMATION MODELING
“The term Building Information Modelling (BIM) refers to the ability to use, reuse and exchange information of which electronic documents are just a single component. BIM is much more than 3D renders or transferring electronic version of paper documents. By implementing BIM, “risk is reduced, design intent is maintained, quality control is streamlined, communication is clearer and higher analytic tools are more assessable”
(AIA 2005)

3. BIM for PM and QS

4. 3D BIM Structural Model

5. 3D BIM Architectural Model

6. 3D BIM MEP Model

7. BIM JOURNEY
•FULL SOLUTION?
•IS IT THE END OF ROAD
FOR QS and PM? Or …
•BIM, BIM, BIM means 變、變、變
ALWAYS CHANGING???

8. THINK AGAIN!!!

9. Review the BIM Data
Structural Wall

10. Review the BIM Data
Revit Qty: Length 7315mm ; Volume 1.108m3
Structural Concrete Beam

11. Review Questions
•How does the Project Team utilize the BIM data stored in the Revit Model?
•How does the Project Team add extra parameters within the CostX® or Revit ® to store information for generation of cost reports or schedules?
•How does the QS conduct cross-check such that the information is correct and accurate enough for cost estimating purposes?

13. BIM Workflow Chart
Model Review
Checking the Modelling Method
Review the BIM data
Identify any drawing discrepancies/ Errors
REVIEW OF BIM MODEL & DRAWING

14. BIM Model Review
Example: Shading Fins

15. BIM Model Review
Example: Concrete Slab

16. BIM Model Review
Example: Metal Railing

17. BIM Model Review
Example: Air Boot

18. Model Review
3 Common Methods of Modelling
 Unjoin and Overlap
 Abutting
 Join and Overlap
Different Modelling Techniques may give out completely different answers!

19. Modelling Technique (1)

20. Modelling Technique (2)

21. Modelling Technique (3)

22. Drawing Discrepancies

23. Drawing Discrepancies

24. INNOVATIVE SOLUTIONS FOR PM & QS

25. IMPROVE EFFICIENCY

26. (1) Shared Parameters

27. Shared Parameter in Revit®
Add extra parameters into DWF ™or DWFx from Revit®. For example:
•QSID
Elemental Code
HKSMM4 Code
Trade code
•Level/Zone
•Concrete Strength
•Reo Rates

28. Shared Parameter in Revit®
Extra parameters like Beam Width, Beam Height, Slab Thickness for concrete beams will be appeared inside the Properties Box in Revit

29. Example: QSID Parameter
Source: ASD’s SMM for Building Element
Typical Example of Elemental Code for QSID

30. INSERT QS IDENTIFIER: CONCRETOR FLOOR

31. INSERT QS IDENTIFIER: STEEL AND METAL WORK RAILING

32. INSERT QS IDENTIFIER = WOODWORK DOORS

33. Example: QSID Parameter
QSID PARAMETER: CONCRETOR, E&M, GLAZING, STEEL AND METAL WORK, WOODWORK AND EXTERNAL LANDSCAPE ETC.
FINAL RESULT

34. Example: QSID Parameter

35. User-Defined Properties

36. User-Defined Properties
Beam Side and Soffit Formwork derived from Beam Width, Beam Height, Slab thickness and Cut length dimensions in CostX ®

37. Add Cost Code and QSID Properties
Adding the relevant cost codes and QSID as User- Defined Properties into the BIM model, CostX® can co- ordinate the Rate Libraries with model object libraries to achieve a high level of automation to the process of generating comprehensive and fully priced Bills of Quantities or Cost Estimates from BIM models.

38. Cost Code Implementation

39. 5D Cost Report

40. Cost Geometry ®
Live links of Workbook
Live-links between drawing files and workbooks mean that change of dimension is automatically updated in the workbook. It allows QS or estimators to perceive drawing revisions and update quantities.

41. (2) Room and Area

42. Revit ®’s Room and Area
•Room and Area data can be a very powerful tool for Project Management. They are essential for everything from room names, finishes scheduling and MEP energy modelling etc.

43. CostX ®’s Room and Area
•When exporting the file, open the DWG or DWF Properties tab in the export dialogue window and tick the “Rooms and Areas in a separate boundary layer” checkbox. The room data will now be exported with the file.

44. CostX ®’s Room and Area

45. (3) System Assemblies

46. Revit®’s System Assemblies
In Revit ®, multiple BIM objects can be combined into one assembly object that can be independently scheduled, tagged and filtered.

47. Revit®’s System Assemblies
Different objects can be grouped in assemblies and layered elements such as walls, floors, roofs etc.

48. CostX®’s System Assemblies
Figure: CostX® screen shot of composite slab assembly

49. (3) Scheduling

50. Revit ®’s Scheduling
•Revit ® can create a schedule for building component inside the BIM model. A key schedule let you define key to automatically fill in some information for the schedule.

51. CostX ®’s Scheduling

52. CostX ®’s Scheduling

53. BIM MODEL ANALYSIS
By Exactal

54. Clash Detection
Additionally, it is possible to detect clashes between the various designs produced is a key benefit of BIM for cost consultants. This can be done through overlaying the architectural, structural, and MEP models in software capable of detecting clashes.
Clash Detection between designs would lead to fewer cost estimate revisions in early project stages.

55. MEP Fixtures
Architectural Trades
Ghost View

56. Clash Detection
ROOF STRUCTURE
F.S. PIPEWORK

57. BIM MODEL REVISION
By Exactal

58. Auto-Revisioning
If a revised model is sent through, CostX allows you to compare the models, highlight the changes (green = new, yellow = changed, red = deleted & blue = same) and update the quantities automatically, eliminating the need to redo everything.

59. BIM Revision Module
REVISION 2
REVISION 1

60. Revision Module

61. Revision Module
AUTO DETECTION

62. Revision – Track Changes

63. Revision – Track Changes

64. Revision – Rev.1 QTO Result

65. Revision – Rev.2 QTO Result

66. Revision – Revision Log

67. LEVEL OF DEVELOPMENT
By Exactal

68. BIM’s LOD Details
•At early design stage, foundation may not be modelled due to lack of information.

69. BIM’s LOD Details
•At the detailed design stage, the piling details have been developed from structural analysis.

70. BIM’s LOD Details
•At the tender stage, the rebars are also modelled and located inside the BIM model. 2D plans such as rebars’ typical details can be used to complement the BIM model.

71. BIM’s LOD Details
•During the construction stage, more detailed information is modelled for structural members. Rebars can also be represented in the model in 3D. It is also acceptable to represent the details in 2D shop drawings.

72. BIM’s LOD Details
•Finally, as-built BIM drawing will be recorded after the completion of project.

73. FINAL WORDS
By Exactal

74. BIM Execution Plan
Recommended BIM Execution Plan should
include the following topics:
•Project information
•BIM goal & uses
•Each project member’s roles, staffing and competency
•BIM process and strategy
•BIM exchange protocol and submittal format
•BIM data requirement
•Collaboration procedures and method to handle shared models;
•Quality control
•Technology infrastructure & software

75. The Future of BIM Measurement
•Both Revit® and CostX® can help you move from the Why stage of implementing BIM to the How stage.
•Successfully implemented in multiple companies around the world with great success, many of whom were switching from an older system to BIM.
•Functions like Shared Parameters, Room and Area, System Assemblies and Scheduling are definitely helping the PM and QS to make more accurate decisions.

76. Supplementing Measurements taken from the Model
•Even though the model does not contain all the necessary information required, both CostX’s and Revit® features allow the user to complete a full and accurate takeoff/schedules
•Manual BIM Measurement was used to take measurements from the model where required
•The supplementing 2D plans were also used to take additional measurements In cases where the model is not fully complete, these features are invaluable.

77. TO BE “BIM THINKING”

78. Introduction to Exactal and CostX