HVAC Ductwork Shop Drawings & LOD 400 BIM Spooling
Stop field-measuring ductwork. Coordinated 3D Revit duct models, piece-marked fabrication tickets, and hanger schedules compliant with DW144 and SMACNA.
Technical Deliverables & Scope
Sheet Metal Spool & Cut Sheets
Individual piece mark tags, duct straights, transition angles, and sheet metal gauges ready for shop plasma cutting.
Flange & Pressure Class Detailing
Accurate modeling of TDC/TDF, slip & drive, angle ring flanges, and internal stiffeners compliant with system static pressures.
Damper & Attenuator Clearances
Volume control dampers, fire/smoke dampers, and silencers modeled with mandatory actuator maintenance access zones.
Trapeze Hanger & Drop Schedules
Pre-pour channel inserts, threaded rod lengths, and Unistrut trapeze support schedules dimensioned from structural gridlines.
Frequently Asked Technical Questions
Which sheet metal fabrication standards do you adhere to? +
We model strictly to UK DW144 / TR19 standards, US SMACNA HVAC Duct Construction Standards (Metal and Flexible), and Australian AS 4254.
Do you model maintenance access clearances for dampers and inline equipment? +
Yes. We apply soft-clash maintenance clearance buffer envelopes around motorized fire dampers, VAV boxes, access doors, and filter pull zones.
How do you coordinate ductwork with congested plumbing and electrical routes? +
Every run is modeled in native 3D Revit and audited weekly in Navisworks Manage to guarantee zero spatial conflicts with domestic water, drainage falls, and cable ladders.
Need Coordinated Drawings in Your Region?
Send us your architectural backgrounds, single-line schematics, or equipment schedules for an immediate review and fixed-fee estimate.