Introduction to the RICS BIM and its importance to the UK Measurement and cost calculation process in BIM Case study RICS HQ RICS key findings Summary

1. Issues concerning cost
calculation and control in
the BIM process
James Fiske
Director, Product Delivery and Operations
RICS
April 2016

2. • Introduction to the RICS
• BIM and its importance to the UK
• Measurement and cost calculation process in BIM
• Case study RICS HQ
• RICS key findings
• Summary
Overview

3. Introduction to the RICS

4. RICS – who we are and what we do
We are a professional body that accredits professionals within the
land, property and construction sectors worldwide
Our membership is over 100,000 qualified members and more than
80,000 students and trainees
Not just the UK - our membership spans across 146 countries
Our primary objective is the development of international standards
(property measurement, construction, ethics…)

5. BIM and its importance to the
UK

6. What is BIM?

7. BIM is not a single CAD program
It’s the integration of many software programs
And more importantly
The collaboration of construction professionals
What is BIM?

8. Why is it important to the UK?
Construction 2025

9. What is BIM Level 2?
Source: Bew / Richards 2009/10

10. What is 5D BIM?
2D
Line
Drawings
3D
Object
Models
4D
Time -
Schedules
5D
Cost Plans /
Estimates

11. 0 - Appraisal
1 - Brief
2 - Concept
3&4 – Developed and
Technical design
6 – Handover 7 – Use
RIBA
Stages
Appraisal Design Construct Operate End of Life
Project Post ProjectPre-Project
Strategic Outline
Case
Outline
Business Case
Final Business
Case
Occupancy
Evaluation
End of Life
Business Case
Decision
Gates
What is BIM?
Effort/Effect
Ability to
reduce costs
Cost / Effort to
make design
changes
Preferred
Design
Process
Traditional
Design
Process

12. Assessment and
need
Procurement
Post-contract award
and mobilisation
Production
Maintenance
and use
Figure taken from PAS1192-2:2013 – Copyright Mervyn Richards
Further information

13. Measurement and cost
calculation process in BIM

14. GIFA
BCIS Average
Building Prices
X = Total Building
Cost
Elemental
Unit Quants
BCIS Average
Elemental Rates
Or Cost Analysis
X = Total Cost
GIFA
BCIS Running
Costs
X = Total Running
Cost
Cost Calculation from a BIM

15. Code Description Parameters Used Parameter Boundry
D.20. D20: EXCAVATING AND FILLING
D.20.21. Machine excavation
D.20.21.06.
Trench excavation to receive foundations, pile caps and
ground beams, depth not exceeding
D.20.21.06.B 1.00 m
D.20. D20: EXCAVATING AND FILLING
D.20.71. Timber earthwork support to firm ground
D.20.71.04.
To sides of excavation 2.00 - 4.00 m apart, depth not
exceeding
D.20.71.04.A 1.00 m
D.20. D20: EXCAVATING AND FILLING
D.20.82. Off site disposal of material arising from earthworks
D.20.82.09. Removed, including providing a suitable tip
D.20.82.09.B machine loading
E.10. E10: MIXING, CASTING, CURING IN SITU CONCRETE
E.10.12. Reinforced in situ concrete; mix C25P
E.10.12.01. Foundations
E.10.12.01.B generally
E.20. E20: FORMWORK FOR IN SITU CONCRETE
E.20.01. Formwork to general finish
E.20.01.01. Sides of foundations
E.20.01.01.C 500 - 1000 mm high
E.30. E30: REINFORCEMENT FOR IN SITU CONCRETE
E.30.11.
Bar reinforcement; high yield steel bars, BS 4449,
delivered to site cut, bent and labelled
E.30.11.05. Bars, fixing with tying wire
E.30.11.05.D 12 mm
Code Description Parameters Used Parameter Boundry
D.31. D31: PREFORMED CONCRETE PILES
D.31.20. Reinforced concrete piles
D.31.20.10.
Provision of all plant including bringing to site and removal
on completion; setting up and subsequent dismantling;
general maintenance
D.31.20.10.A average 100 Nr piles
D.31. D31: PREFORMED CONCRETE PILES
D.31.20. Reinforced concrete piles
D.31.20.20. Sectional size; 600 mm dia
D.31.20.20.A 10 m max total driven depth
D.31. D31: PREFORMED CONCRETE PILES
D.31.20. Reinforced concrete piles
D.31.20.30. Cutting off tops of piles; 600 mm dia
D.31.20.30.A total length 2.0 m
D.31. D31: PREFORMED CONCRETE PILES
D.31.20. Reinforced concrete piles
D.31.20.50. Pile tests; 600 mm dia
D.31.20.50.A working pile; maintained loading 500 Kn
<10m Length
Total Nr of piles > 1001Nr
Length x Nr
Nr
Nr
Volume
Perimeter
0.1 (t/m3) of Volume 250 - 500mm Depth
500 - 1000 mm Depth
Volume
Perimeter x Depth
Volume
2.00 - 4.00 m Length
0.5 - 1.0 m Depth

16. Case Study
RICS HQ

17. 2013…
Case Study: RICS HQ

18. Two weeks later…
The Scan

19. • Four different software vendors
• One BIM model
• One set of questions
• And a tape measure…
BIM Vendor Challenge

20. Gross Internal Floor Area
The Results

21. • Many examples of BIM in new build, but not for existing
buildings
• The 3D model was incomplete and there were errors
• The model was not designed in a way that made it easy to
extract the information
– No model object for ease of measuring floor area
– Naming and coding convention used did not help
– Requirements were not agreed (e.g. no BIM Execution Plan)
• The software need inputs from professionals who understand
the appropriate measurement standards
Key Findings

22. What did we do about it…?

23. • Roles and responsibilities agreed – e.g. who is the BIM manager?
• Data / file exchange formats agreed to suit measurement
software (test them!)
• Agree data drops / exchanges and details (considering model
size!)
– Level of Detail (LoD) - Graphical
– Level of Information (LoI) – Non-graphical (spatial, performance, standards,
workmanship, certification)
• Naming and coding conventions
• Capture requirements in BEP (template provided)
• Non-compliance with agreed protocols through BIM manager
• Checking / validating outputs
Key Findings

24. Where to Learn More…

25. The BIM Toolkit
www.theNBS.com/Toolkit
Steering team

26. Classification

27. Level of Information (LOI)

28. Level of Detail (LOD)

29. www.theNBS.com/Toolkit
Links to isurv and BCIS

30. • The UK considers BIM as an important aspect of its
construction strategy (mandated)
• As with anything new – we are evolving – it is not perfect yet
• Tools, training and information are available to support
• Software can help but collaboration is essential
• BIM Execution Plan (BEP) is essential to agree exchange –
timing, formats, details
• BIM toolkit can help with this
• Naming and coding conventions and control of them
• Checking, checking and more checking!
Summary

31. Thank you for listening
www.rics.org
jfiske@rics.org