Identifying BIM-related Costs Due to Changes Hisham Said, Ph.D. Santa Clara University Justin M. Reginato, Ph.D., P.E.

Size: px

Start display at page:

Download "Identifying BIM-related Costs Due to Changes Hisham Said, Ph.D. Santa Clara University Justin M. Reginato, Ph.D., P.E."

Crystal Cole
8 years ago
Views:

1 ELECTRI International Council Meeting, Naples FL 1/21/2016 Identifying BIM-related Costs Due to Changes Hisham Said, Ph.D. Santa Clara University Justin M. Reginato, Ph.D., P.E. CSU Sacramento

2 BIM... Great Tool Ubiquitous Multi-trade coordination Visualization of design intent Model-driven field layout Model-driven prefab Better coordination & collaboration Reduced E&O and rework 2

3 Percentage of Responses BIM... Great Tool... BUT! Implementation problems! 80% 70% 60% 40% 20% 0% 16% 14% 4% 2% 2% 2% 6% 3

4 BIM... Great Tool... BUT! (cont.) BIM is an expensive tool requiring costly qualified staff and overhead expenses: BIM-implementation cost (in percent of total project cost) Dramatic erosion of the ROI on BIM 4

5 Preliminary Case Study Owner s reply to an EC and GC Change Request: I agree with the basis for which they are entitled to additional compensation, but what is out of alignment is that the [EC] is requesting additional compensation which is more than double their preconstruction budget (200% increase) compared to a 5% increase in actual scope modifications 5

6 What do you mean it costs that much to move that light fixture a few inches? 6

7 The Solution Determine the true costs associated with making changes to BIM models which will, in turn, aid electrical contractors in educating owners and their representatives about: 1) the importance of complete project scopes and designs before developing BIM construction models; and 2) the true costs associated with ill-timed BIM changes. 7

8 How we will do it? 6 core tasks + 2 alternate tasks Online Wiki/Blog 6 Core Tasks Virtual Design Change Best Practices 8

9 How we will do it? TASK 1 - Identify BIM-related Change Cost Impacts, Determinants & Recovery Practices TASK 2 - Determine Current Cost Coding Systems to Track BIM-related Tasks TASK 3 - Collect Case Studies of Project Changes and Their BIM-Related Cost Impacts 9

10 How we will do it? TASK 4 - Quantify the Magnitude of BIM- Related Cost Impacts from Collected Project Changes TASK 5 - Develop Best Practices to Communicate BIM-Related Cost Impacts of Changes TASK 6 - Develop a Course on Managing BIM-Related Cost Impacts of Project Changes 10

11 How we will do it? Alternate 1 - Develop Online Wiki/Blog to Disseminate the Project Findings to the Construction Industry Alternate 2 - Develop Best Practices of Virtual Design Change Management 11

12 Budget Alt. 1 = $4,933 Total incl. Alternates = $71,627 Online Wiki/Blog 6 Core Tasks Alt. 2 = $6,314 Virtual Design Change Best Practices Core Study Budget = $60,380 12

13 Timeline and Milestones Tasks/Events March August ) Identify BIM-related Change Cost Impacts 2) Determine Current Cost Coding Systems of BIMrelated Tasks 3) Collect Case Studies of Project Changes and BIMrelated Cost Impacts 4) Quantify the Magnitude of BIM-related Cost Impacts 5) Develop Best Practices to Quantify Changes BIM- Related Cost Impacts 6) Develop a Course on Managing BIM-related Cost Impacts Alt 1) Develop Online Wiki/Blog to Disseminate the Findings Alt 2) Develop Best Practices of Virtual Design Change Management 6 months Core Tasks Timeline (months) M A M J J A S O ELECTRI Council Napa Meeting 13

14 Outcome & Dissemination Summary and Research Reports Course on Design Changes BIM Impacts Quantification Wiki/Blog (alternate) Virtual Design Change Management BP (alternate) Other venues 14

15 The Team Hisham Said CEM faculty at Santa Clara University ASCE ExCEEd Fellow Recipient of ELECTRI Early Career Award More than 25 academic papers Justin Reginato CM Faculty at Cal State Sacramento Productivity-based courses Previous experience with ELECTRI Industry experience Several ELECTRI members have expressed interest in participating in this study 15

16 Summary The full potential of BIM cannot be realized due to customers abusive use of its capabilities in accommodating incomplete design information or continuous design changes The study will empower NECA members to communicate and recover justifiable BIMrelated cost impacts of design changes. 16

17 ELECTRI International Council Meeting, Naples FL 1/21/2016 Thank you! Identifying BIM-related Costs Due to Changes Hisham Said, Ph.D Justin M. Reginato, Ph.D., P.E

18 BIM... Great Tool Backup Detailed Slides 18

19 BIM... Great Tool Gaining more and more popularity 19

20 BIM... Great Tool Streamlining the business operations. Design and Planning Construction 20

21 BIM... Great Tool Proven record of BIM benefits! 21

22 Percentage of Responses BIM... Great Tool... BUT! Implementation problems! 80% 70% 60% 40% 20% 0% 16% 14% 4% 2% 2% 2% 6% 22

23 BIM... Great Tool... BUT! (cont.) BIM is an expensive tool requiring costly qualified staff and overhead expenses: BIM-implementation cost (in percent of total project cost) 23

24 BIM... Great Tool... BUT! (cont.) Sometimes, it does not pay-off for contractors! 24

25 Why carry the load alone! Electrical contractors should be able to be compensated for BIM-related cost over-run when it is not well-implemented by others! 25

26 Preliminary Case Study EC design-assist work Original Pre-construction period: 10 months BIM Implementation Problems: - EC was not invited to early design meetings - Mech contractor changed! - Missing info in the design-intent model - Rework and rerouting in the BIM model 26

27 Preliminary Case Study Owner s reply to an EC and GC Change Request: I agree with the basis for which they are entitled to additional compensation, but what is out of alignment is that the [EC] is requesting additional compensation which is more than double their preconstruction budget (200% increase) compared to a 5% increase in actual scope modifications 27

28 How we will do it? TASK 1 - Identify BIM-related Change Cost Impacts, Determinants & Recovery Practices Interviews & Online Questionnaire Presumptions: BIM-related costs include: engineering, model update, prefab build sheets, Trimble layout. EC role in BIM implementation is shadowed by others (GC or Mech) Significant record of BIM budget overrun High resistance from owners in understanding BIM budget overruns. 28

29 How we will do it? TASK 2 - Determine Current Cost Coding Systems to Track BIM-related Tasks Detailed coding is good for tracking BIM-related costs, but it is hard to utilize! Important for next tasks in collecting and comparing the collected case studies. 29

30 How we will do it? TASK 3 - Collect Case Studies of Project Changes and Their BIM-Related Cost Impacts 40 cases Classify case into: Positive & Negative Changes and BIM-related Tasks Design Changes occurrence LOD Model Completion (%) Engineering hours BIM Manager hours BIM Detailer hours Prefab Detailer hours Jobsite Layout hours.. Weeks (starting from design-intent BIM approval date)

31 How we will do it? TASK 4 - Quantify the Magnitude of BIM-Related Cost Impacts from Collected Project Changes Compare time-effort curves Effort Positive Scenario Negative Scenario Cum. Effort BIM-related Cost Impact Delay and Increase of BIMrelated Tasks Time BIM-related Schedule Impact Time Construction Documentation Actual Construction 31

32 How we will do it? TASK 5 - Develop Best Practices to Communicate BIM-Related Cost Impacts of Changes Cost coding structures + early performance indicators + impact calculation + reporting TASK 6 - Develop a Course on Managing BIM- Related Cost Impacts of Project Changes Online webinars, physical meetings, hybrid Audience: EC s project managers, BIM managers, drafters, and field operations personnel 32

33 How we will do it? Alternate 1 - Develop Online Wiki/Blog to Disseminate the Project Findings to the Construction Industry Collection of wider industry feedback Video testimonials Blog for open discussion and sharing experience 33

34 How we will do it? Alternate 2 - Develop Best Practices of Virtual Design Change Management Proactive approaches and measures to eliminate or transfer the risks of BIM-related cost impacts of design changes. Mitigating change impacts before they occur 34

BIM BASICS AIRAH PRESENTATION SERIES. Mark Jacobson National BIM Operations Manager AE Smith & Son

BIM BASICS AIRAH PRESENTATION SERIES Mark Jacobson National BIM Operations Manager AE Smith & Son Presentation Content What will be covered Common terms and software utilised A basic overview of BIM workflows