BIM995 4 D scheduling using Delmia and Microsoft

BIM-995: 4 D scheduling using Delmia® and Microsoft Project® on hydroelectric construction projects Michel Guevremont and Chantale Germain

Presentation plan n Author's and our group n Introduction and objectives of the simulation system n Developed methodology n Implementation on 4 projects n Findings of the study (benefits, limitations, challenges) n Conclusion and future developments 2

Michel's Biography Degree: P. Eng. , M. Sc. A. , PSP, PMP University: École Polytechnique de Montréal (Québec, Canada) Years of Experience: 13 years Professional Field: Heavy Civil, Planning, Scheduling & Cost Control Something you do not know about me: Ø 1 kid when writing; 2 now ! Ø Worked 4 years for Kiewit in the United States (2000 -2004) in more than 20 cities on, among other projects: ✪ The big dig project in Boston; ✪ The Miami International Airport - HJ Apron project; ✪ The Jensen Water Treatment plant expansion project in Los Angeles. 3

Chantale's Biography Degree: P. Eng. University: Université Laval (Québec, Canada) Years of Experience: 20 years Professional Field: Heavy Civil, Propositions, Estimating, Planning & Scheduling Something you do not know about me: Ø 3 kids Ø Worked on 3 hydroelectric mega-projects at James Bay phase 2: LG-1, LA-1 and LA-2 Ø Was responsible of estimating and scheduling on 8 hydroelectric projects adding to 6 billions dollars of work. 4

Proposition, Estimaging and Scheduling Group n Mission of the group: ✪ Procure reliable estimates and schedules ✪ Find project costs ✪ Suggest realization scenarios ✪ Procure domain expertise in the field of planning, scheduling & estimating ✪ Use and development of reliable quantities, databases for rates and productivities, risk evaluation and with inflation and market forecasting n Major challenge : ✪ Costs stabilization: Stable and within boundaries ✪ Good comments on: schedule, construction methods, location, architecture, technology, geology and hydrology 5

Multiple Tools developed by the group n Project mock-ups (5 D), n Project simulations (4 D), n Benchmarking system, n Risk analysis cost system, n Escalation specific model, n Real-time field data acquisition system. 6

Systems description n Delmia software (Digital Enterprise Lean Manufacturing Interactive Application) for time simulation n Microsoft Project® 2003 for schedule n Oracle Primavera® P 5 for schedule n Catia R 20 (Dassault) for 3 D mock-up n Visual Basic for Applications® (VBA) macro command for transfer to simulation software 7

Why it is important n Stabilisation of design for our business unit to estimate projects n Specific to nature of the hydroelectric business requires multiples complex structures n Development for rehabilitation and new facilities hydroelectric projects n Integration of engineering work with the dimension of time n Verification of the schedule in 3 D n Integrationof the schedule with design for easier scope changes 8

Systems used before n Independent systems: ✪ GPS or Lidar ✪ WBS ✪ Schedule ✪ Mock-up 9

Effectiveness of 4 D planning compared to 2 D planning n. Recent research (Dawood and Sikka, 2008) shows that 4 D models provide enhanced performance to its users compared with traditional 2 D drawing readers. n With 42 participants of four different age groups doing 21 experiments on a 423 pieces Lego® kit n Demonstrated that 4 D users built 7% faster, consulted 22% less and reworked 77% less than their equivalent 2 D users 10

System implementation n Initial proof of concept in 2008 with virtual spillway n Key internal documents developed: n Technical specifications n Functional specifications n User guide n Methodology for 4 D projects n Reference framework for integration of 4 D rehabilitation projects 11

System implementation overall view Mock-up Macro mpp or xer Schedule Simulation (4 D scheduling) Video 12

Mock-ups n Mock-up developed with consideration for estimating and scheduling level of detail corresponding to pours, lifts or sectors. n Design changes done in mock-up n Unique description ID for each Cat. Part n A Cat. Part refers to a specific piece or material of execution of the project n Geo-referenced Lidar information to ensure accuracy of as-built information can be used n 2 mock-ups used for rehabilitation projects 13

Schedules n 2 nd input for consideration of time n Any of the 2 main software can be used n Required field : task descriptions, task durations, predecessors, calendars and related Cat. Parts n Each schedule activity is tied to at least 1 Cat. Part and a link is created n Use of WBS is mandatory n Use of calendars and seasons features is required 14

Macro Command n 11 buttons n Link between schedule and simulation through imports/exports n 9 files required n 2 independant windows created n WBS lines must be unique 15

Simulation n Tie between mock-up and schedule n Enables time related simulations of the schedule n Mock-up Cat. Part's are sequenced as in the schedule n Comment field useful for explanations in simulation software n All schedule activities get an activity type n Saved as a Cat. Process file 16

Calculations performed with simulations n Code type: concrete, excavations, backfill, structural steel wait time or general n Behaviors and calculations triggered: n Calculated for zones, dates or elevations n Quantities n Volumes: backfill, excavation, concrete n Surfaces: formwork n Length: rebar n Productivities n Ratio of quantities and durations => productivity n m 3/day, m 2/day or m/day 17

Calculations performed with simulations n Quantities n productivities 18

Video demonstrations n Video of new facility: Project C (Dam) n View of structures n Video of rehabilitation project A (Powerhouse) n View of rooms and equipments 19

Project B videos 20

Project D videos 21

Implementation: Project characteristics 2008 Project 2011 A B C D Structure Description Hydro-electric Powerhouse Dam Hydro-electric Powerhouse Project type Rehabilitation New facility Feasability / Definition Project / Execution 269, 3 M$ 4, 8 M$ 105, 9 M$ 94, 4 M$ 40 16 152 229 2008 2010 & 2011 Space management complexity New technology and efficiency New technology, New materials Shutdown mngt, Feasability, schedule control, Health and Safety Feasability, Shutdown mngt, schedule control, interface mngt, Health and Safety Schedule control Feasability, schedule control Project characteristics Project phase Project value (M$) Number of field workers involved in project (peak for 1 work shift) Date of Delmia Developments Project stake or issue Objective of 4 D scheduling 22

Schedule characteristics Project A B C D MS Project* *=Not linked to mock MS Project Schedule characteristics Scheduling software used -up in Delmia Project duration (months of the execution/construction phase) 37 17 29 33 Number of task activities and milestones in project schedule (ea. ) 254 117 234 157 Number of summary activities in project schedule (ea. ) 2 23 16 18 Number of calendars used in project schedule (ea. ) 1 1 2 1 Number of relationships in project schedule (ea. ) 268 165 304 180 Average task activity duration in project schedule (days) 11 6 11 9 WBS Index maximum level used 1 5 4 6 23

Mock-ups characteristics Project A B C D 1 2 (existing conditions and project completed) 1 1 Number of parts used from mock-up (Cat. Parts) 178 131 221 153 Number of products or zones used from mock-up (Cat. Products) 26 24 14 12 Mock-up characteristics Number of scheduling mock-ups (excluding original and estimating mock-ups) 24

Videos characteristics Project A B C D No Yes Yes Consultants Internal Involvement of field personnel No No Yes Number of major construction contracts involved in video 2 1 1 1 . wmv 18 m 57 s 3 m 41 s 3 m 02 s 4 m 55 s Simulation characteristics VBA Macro used for schedule match to mock-up Company internal or consultants developments Simulation video format (. wmv or. avi) Simulation video duration for communications 25

Key drivers for implementation n. Issues foreseen in planning, scheduling or execution; n. Numerous time sensitive scenarios to be evaluated; n. Scheduling is a high risk of the project; n. Important temporary infrastructures required; n. Execution is complex; n 4 D is already used in a prior phase for the benefit of the project. 26

Experienced benefits n. Contribute to communications and understandings between stakeholders (engineers, owners, field personnel and contractors) n. Evaluation of multiple scenarios, multiple construction strategies or schedule recoveries n. Supports project managers and construction managers to take quick decisions with insight for constructability, business case or interests n. Help estimators predict costs in a more precise fashion n. A knowledge base is put together with time simulations for construction sequencing and methods 27

Experienced benefits (…) n. Easier transitions between life-cycle phases of the project as work phases are more visible n. Provides time related automated bill of materials n. Detect time related interference issues specific to zones and between contractors n. Great value where there is limited work space, simultaneous work, superposed work and multidisciplinary work 28

Potential benefits n. Reduction of price differences between project bidders n. Reduction of scope changes and field requests for information (RFI's) n. Addition of suppliers' actual information n. Detection of inconsistencies between actual and future mock-ups 29

Limitations n. Re-import changed data from simulation into the mock-up n. Changes to mock-up must be made in the mock-up software n. Construction equipments and temporary work are not shown n. Allowed level of detail limited to the mock-up parts breakdown n. Each piece or part of the mock-up must have a unique name n. Additional coding required with Oracle Primavera 30

Challenges n Creation of development environment n Performance of over 15 tests in a pre-production environment for: n Links between software n Graphical user interface n Calculations n Change of design habit while developing the mock-up to duplicate instances of piece or part in mock-up n Need for multiple mock-ups (i. e. original, estimating and scheduling mock-up) n Development of zone splits in mock-up associated to Cat. Parts and schedule activities for correct level of detail n Help suppliers to communicate their 3 D files (materials and equipments) 31

Future work n. Templates with detailed typical schedule structure n. Construction equipments and temporary work in mock-ups n. Simulations by contract / work packages in mockup n. Simulation of openings and closings of floors (for rehabilitation projects) n. Use this system with other divisions such as for substations 32

Conclusions n Simulations are now proven technology for numerous technology sectors such as manufacturing, aerospace and BIM n Numerous benefits are experienced on four hydroelectric projects n This presentation provided references for planner, schedulers and estimators with the use of simulations n Use of 3 D mock-up's and simulation software potential has changed the vision of our business unit about planning and scheduling 33

Question Period Thank you for your participation Contact: germain. chantale@hydro. qc. ca guevremont. michel@hydro. qc. ca 34