Speaker: Racha Chahrour– Hochtief ViCon -How are classic technologies being adopted? -Challenges – experience, software capabilities About the Qatar BIM User Day: Qatar University, HOCHTIEF ViCon and Teesside University proudly take the initiative to facilitate modern and innovative methods in the Gulf construction industry. The focus is Building Information Modeling (BIM), and our aim is to establish a knowledge platform with government, research and industry experts. The User Day aims to help people to share knowledge, discuss new technologies, and identify new potentials for BIM. More information: www.bimuserday.com Follow BUD on Twitter @bimuserday

1. 2nd Qatar BIM User Day “Technology is the key to success”
BIM for Project Scheduling and Quantity Take-Off
Dr. Racha Chahrour
HOCHTIEF ViCon Qatar W.L.L.
www.hochtief-vicon.com
Dr. Racha Chahrour
HOCHTIEF ViCon
1

2. Agenda
1. 4D Model Creation Strategy
2. 4D Scheduling Software
3. Quantity Take Off
4. Summary
Dr. Racha Chahrour
HOCHTIEF ViCon
2

3. 4D Model Creation Strategy
Major Elements
3D Model
4D Model
Schedule
Dr. Racha Chahrour
HOCHTIEF ViCon
3

4. 4D Scheduling Software
Import
Available Software Systems
Program
3D Model
Create 4D
4D Editors
Dr. Racha Chahrour
HOCHTIEF ViCon
4

5. 4D Scheduling Software
Manual Linking in NavisWorks
Structured 3D
Selection Sets
Schedule activities
Links
Dr. Racha Chahrour
HOCHTIEF ViCon
5

6. 4D Scheduling Software
Rule-based Linking in NavisWorks
Parameter based
search sets
Parameter
Linking rules
Dr. Racha Chahrour
HOCHTIEF ViCon
6

7. 4D Scheduling Software
Manual and Rule-based Linking in Synchro
Attributes
3D objects
Linking rules
Attribute
scheduling tasks
Dr. Racha Chahrour
HOCHTIEF ViCon
7

8. 4D Scheduling Software
State of the Art Functionalities of 4D Editors
•
Import various 3D model formats
•
Support major scheduling software
•
Construction sequence animation
•
Synchronisation of model and program data
•
Rule-based activity linking
Visual Schedule
Analysis
Dr. Racha Chahrour
HOCHTIEF ViCon
8

9. 4D Scheduling Software
Limitations of 4D Editors
•
Limited export of created 4D model
•
Complex and time consuming linking process
•
Focus on visual schedule analysis
•
High efforts for 4D model updates
No Scheduling
Support
Dr. Racha Chahrour
HOCHTIEF ViCon
9

10. Quantity Take Off
Model-based Quantities - Creation Strategy / Software
Specs
3D Model
Filled BOQ
with modelbased Quantities
Dr. Racha Chahrour
HOCHTIEF ViCon
10

11. Quantity Take Off
Structural Elements
• Elements:
• Columns
• Walls
• Ceilings
• Beams
• Quantities with the
corresponding
structural elements
Dr. Racha Chahrour
HOCHTIEF ViCon
11

12. Quantity Take Off
Rules of Measurements
• All openings like doors,
windows, ceiling fretworks
are subtracted -according
to the QRM- of the
corresponding structural
elements
• If wall and beams intersect,
the intersection area is
subtracted of the wall
Dr. Racha Chahrour
HOCHTIEF ViCon
12

13. Quantity Take Off
Visualisation of Object Attributes
• Walls, columns and ceilings
may have different qualities.
e.g. walls:
a. Drywalls
b. Blockwork
c. Concrete
a.
c.
b.
• So different types of walls
are displayed in different
colours
Dr. Racha Chahrour
HOCHTIEF ViCon
13

14. Quantity Take Off
Finishing Works
• Finishing works can be
calculated over the rooms
• A room is bounded by
vertical and horizontal
structural elements
Dr. Racha Chahrour
HOCHTIEF ViCon
14

15. Quantity Take Off
Process Requirements
•
Full definition of model requirements at project start to
ensure re-usage of 3D models
•
Definition of the model structure considering construction
joints
•
Usage of appropriate agreed/standarised description for
3D model elements
•
Implementation of rules of measurement to consider small
openings
•
Easy access to created data for all stakeholders
Dr. Racha Chahrour
HOCHTIEF ViCon
15

16. Summary
• Latest technology is generally able to meet common project
requirements
• Rule-based schedule linking would improve performance
• Visualising the construction program improves project communication
among all stakeholders
• Data exchange is limited
•
Quantity take off requires accurate, structured and qualified 3D
models
Dr. Racha Chahrour
HOCHTIEF ViCon
16

17. Thank you for your attention!
Dr. Racha Chahrour
BIM Manager
HOCHTIEF ViCon Qatar W.L.L.
www.hochtief-vicon.com
Dr. Racha Chahrour
HOCHTIEF ViCon
17