Back to Basics Duct Design.
Drafting and Successful
Downstream efficiency.
Presenter : Christopher Nyul– Queensland Senior Draftsperson
13th May 2013
Back to Basics Duct design
• Manufacturing and Installation principals.
• BIM, co-ordination of services.
Presentation Agenda
Manufacturing and Installation principals.
• Parameters can be applied within the intelligent software.
• Project Design Guide (AS 4254).
• Testing.
• Pressure Class, Air Flow and System Type.
• Duct Profiles.
• Accessibility, Egress and maintenance.
• Schematics and Layouts.
• Flue Expansion.
• Hangers and Supports.
• Prefabrication.
.
Back to Basics Duct design
Back to Basics Duct design
Deflection / Leakage Testing of duct.
Back to Basics Duct design
Deflection / Leakage Testing Rig.
Back to Basics Duct design
Deflection / Leakage Testing.
• Ascertain the amount of leakage and minimise, to reduce
operating costs.
• Improve manufacturing practices to reduce leakage.
• Limit the amount of deflection.
• Ensure that bracing and beading are sufficient.
• Pressure Class,
• Air Flow
• System Type.
Back to Basics Duct design
Resizing Ductwork.
• Rectangular
• Round
• Oval
Back to Basics Duct design
Duct Profiles
Back to Basics Duct design Duct Manufacturing Machinery
Back to Basics Duct design
Fitting Elimination
What We See.
Item Information. Pattern Development.
Nest Layout.
Back to Basics Duct design
Product. Back to Basics Duct design
TDF-35 TDF-35 Cap-End
Access Panel
Back to Basics Duct design
INS Step-in TDF-35 Loose Mezz Frame
Back to Basics Duct design
Back to Basics Duct deign Access, Egress and Maintenance
Back to Basics Duct design Access, Egress and Maintenance
Access, Egress and Maintenance
What is wrong with this picture?
Back to Basics Duct deign
Fleshing out the Schematic.
Back to Basics Duct deign
Back to Basics Duct design Fleshing out the Schematic.
Efficient hanging. Back to Basics Duct design
Back to Basics Duct design Prefabrication.
Back to Basics Duct design Prefabrication From the Drawing.
Back to Basics Duct design
Prefabrication To Site.
Flue Stack Prefabrication. Back to Basics Duct design
Flue Stack Prefabrication. Back to Basics Duct design
Thermal Expansion, with Bellows. Back to Basics Duct design
∆L = LX α x ∆T
Change in length, Length of Duct,
Thermal Coefficient and Temp difference
Between outer and inner.
Expansion without Bellows. Back to Basics Duct design
Back to Basics Duct Design
The Coordination Process.
• Service Contractors provide their 3D drawings to A.E Smith.
• A.E Smith Import these services along with the Mechanical Into
Navisworks and carry out floor by floor Clash detection.
• The Clashes are then Reviewed and assigned.
• The Navisworks Model CW Clash detection Reports is then
provided back to the relevant parties for review and drawing
revisions are carried out.
• The Process will then begin again.
BIM, Co-ordination of services
Back to Basics Duct Design
Drawing Revision
Drawing Revision
BIM 3D (Coordination) Workflow.
Back to Basics Duct design
End Result.
Back to Basics Duct Design
Clash Detection Report.
Back to Basics Duct Design
Revit is BIM ???.
15th May 2013
THANK YOU
& Question Time