2nd qatar bim user day scheduling, qto and estimating technology
DESCRIPTION
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 @bimuserdayTRANSCRIPT
1 Dr. Racha Chahrour
HOCHTIEF ViCon
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
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Agenda
1. 4D Model Creation Strategy
2. 4D Scheduling Software
3. Quantity Take Off
4. Summary
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HOCHTIEF ViCon
4D Model Creation Strategy
Major Elements
3D Model
Schedule
4D Model
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HOCHTIEF ViCon
4D Editors
Program
Imp
ort
C
reate
4D
4D Scheduling Software
Available Software Systems
3D Model
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4D Scheduling Software
Manual Linking in NavisWorks
Structured 3D Selection Sets
Schedule activities Links
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HOCHTIEF ViCon
4D Scheduling Software
Rule-based Linking in NavisWorks
Parameter based search sets
Linking rules
Parameter
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4D Scheduling Software
Manual and Rule-based Linking in Synchro
Attributes 3D objects
Attribute scheduling tasks
Linking rules
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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
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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
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Quantity Take Off
Model-based Quantities - Creation Strategy / Software
Filled BOQ with model-based Quantities
Specs 3D Model
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• Elements:
• Columns
• Walls
• Ceilings
• Beams
• Quantities with the corresponding structural elements
Quantity Take Off
Structural Elements
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• 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
Quantity Take Off
Rules of Measurements
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• Walls, columns and ceilings may have different qualities. e.g. walls:
a. Drywalls
b. Blockwork
c. Concrete
• So different types of walls are displayed in different colours
a. c.
Quantity Take Off
Visualisation of Object Attributes
b.
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• Finishing works can be calculated over the rooms
• A room is bounded by vertical and horizontal structural elements
Quantity Take Off
Finishing Works
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• 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
Quantity Take Off
Process Requirements
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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
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Dr. Racha Chahrour
BIM Manager
HOCHTIEF ViCon Qatar W.L.L.
www.hochtief-vicon.com
Thank you for your attention!