The Influence of BIM on Quantity Surveyors Presented by: Syukri Zulkipli Alex Lim

Table of Content 1.BIM Introduction 2.Benefits of BIM 3.Barriers and Challenges of BIM 4.Current BIM Practice 5.Impact on QS Profession 6.Future of QS

BIM Introduction What is BIM? 3D BIM, 4D BIM, 5D BIM, 6D BIM, etc? Common misconception: – BIM is just a Software – BIM will replace Quantity Surveyors – BIM can do measurement with a single click – BIM can generate BQ with a single click Building Information Modelling (BIM) is the process of generating and managing the data of a building throughout its lifecycle

Benefits of BIM Collaboration – Shared single building model or several coordinated model – Effective communication of ideas and actions – Faster decision making process Visualization of Architect’s Design – Easier to establish client’s requirements – Clients can virtually walk around their building – Generate multiple “what if” scenarios – Identify potential on-site problems/critical areas earlier

Benefits of BIM (cont…) Accurate Estimations – Quantity takeoff directly from the model – BIM requires high quality, reliable and integrated information about the project – Reduction of human error

Barriers and Challenges of BIM High Initial Cost – Training, software and hardware upgrade – Especially for smaller firms – Firms are not willing to make an investment Lack of Standards – Interoperability issue due to different software – Important due to the large data exchange – Required to ensure efficient implementation

Barriers and Challenges of BIM (cont…) Resistance to Change – Individuals and firms have their own preferred system, software application and processes – Companies assume that their existing system are adequate Legal and Contractual Issue – Issue of ownership of the building model and intellectual property rights – Lack of clear understanding about the roles and responsibilities

Current BIM Practice a.BIM Applications b.5D BIM– Quantity take off c.5D BIM– Take off labelling d.5D BIM– Cost certainty e.Golden rules of 5D BIM Sources of information: 5D BIM Seminar at Kuala Lumpur on 22 nd ~ 23 rd January 2015

a. BIM Application Clash detection and report Design visualisation & study Construction coordination modelling Construction phased schedule Quantity take off Cost planning Documentation/ specification management Design analysis – Energy, Solar, Wind, CFDs.. Facility Management X Quantity Production Rate + Location = Schedule Quantity X Cost/Unit + Markup = Cost

b. 5D BIM– Quantity Take Off Third party 5D BIM software: – Glodon – Vico – Buildsoft – Autodesk Revit – Cost X

b. 5D BIM – Quantity Take Off

5D BIM – Quantity Take off labelling Take off the Primary quantity from BIM (e.g. Length of Beam, Length of Walls, Height of column Extract primary quantity into work sheet Convert primary quantity to secondary quantity for use of BQ

5D BIM – Quantity Take off labelling Walls: Qs Tag: Lvl1-IW-C = 7m LocationElementTypeThicknessPrimary Qty Input height Secondary Qty (BQ) Level 1Internal Wall Con. Grade mm thick 7m3m21m2 Columns: Qs Tag: Grd~1st-C30-300x300 = 3m LocationElementTypePrimary Qty (Height) LengthWidthSecondary Qty (BQ) Ground to 1st ColumnCon. Grade 30 3m0.3m 0.27m3

5D BIM – Quantity Take off labelling LocationElementTypeSlab thickness Primary Qty Girth = Width + (Height- slab)x2 Secondary Qty (BQ) Level 2Upper floor beam Con. Grade mm thick 10m (0.5 – 0.15)x2 8.5m2 Beams (Formwork): Beams (Concrete): Qs Tag: Lvl2-UP-C30-150X = 10m LocationElementTypeSlab thickness Primary Qty Input width x (depth-slab) Secondary Qty (BQ) Level 2Upper floor beam Con. Grade mm thick 10m0.15 x (0.5 – 0.15) 0.525m3

d. 5D BIM - Cost Certainty Quantity Take off Supplier/ Manufacturer Fabricated and install on site Lower the risk of redesign Creating cost certainty

d. 5D - Cost Certainty

e. Golden rules of 5D BIM i ) Accurate geometry ii) Model the way it’s built iii) Define rooms and departments correctly iv) Give the 5D QS an early look at your model

e. Golden rules of 5D BIM Nice to have: i)Correct model base point ii)Define objects with correct level / storey iii)Use proper object tool (i.e. column tool) iv)Checking for objects within objects v)Consistent naming conventions – resist editing vi)Include a classification code

Current BIM Practice Other consultants provide the model? – Willingness to provide the file – Do we trust the model? – Is the model made in accordance to SMM? QS to produce the model? – Takes more time? – Modelling and measurement at the same time – Can be used for valuations – Can be used for future purposes

Impact of BIM on QS Are QSs still required? – Automated quantity takeoff and BQ Production – Other profession to undertake QS role? – BIM does not produce BQ with a single click – Assist the cost estimating process – Would other profession want to take responsibility?

Future of QS The role of QS will continue to evolve BIM and ICT will have a great impact Important to understand our core competencies How much of the changes can we influence It is not “Why should we use BIM” The question should be “How do we use BIM”

Questions?