OpenBuildings™ Station Designer Help

Connect Ducts/Pipes

Used to quickly join common duct or pipe intersections; Turns, tees and cross intersections. Depending on the circumstances, individual fittings or a combination of fittings are inserted using Mechanical discipline's auto fitting placement functionality.

Accessed from:


  • Ribbon: Building Design > Modify > Modify > Connect > Connect Ducts/Pipes
  • Ribbon: Modeling > Forms > Modify Forms > Connect > Connect Ducts/Pipes


SettingDescription
Ducts Methods available for joining duct intersections.
  • Elbow - Joins ducts with an elbow fitting for any angle, or an elbow/transition fitting combination if the joined components differ in size or shape.
  • Takeoff - Joins ducts with a takeoff fitting for any angle, or a takeoff/transition fitting combination if the joined components differ in size or shape. The first duct selected is broken, and is then attached to the second duct.
  • Double Takeoff - Joins crossing duct intersections with two takeoffs for any angle, or takeoff/transition fitting combinations if the joined components differ in size or shape. The first duct selected is broken, and the broken segments are then attached to the second duct.
  • Tap - Joins ducts with a tap fitting for any angle, or a tap/transition fitting combination if the joined components differ in size or shape.
  • Tee - Joins perpendicular ducts with a tee fitting, or a tee/transition fitting combination if the joined components differ in size or shape. The first duct selected is broken, and is then attached to the second duct.
  • Cross - Joins perpendicular duct intersections with a cross fitting, or a cross/transition fitting combination if the joined components differ in size or shape.
  • Ogee - Joins only aligned rectangular duct at different elevations with an ogee fitting.
    Tip: Use (HVAC Autofitting Preferences) to change the ogee sheet size auto-fitting preference.
Pipes Methods available for joining pipe intersections.
  • Elbow - Joins pipes with an elbow fitting for any angle, or an elbow/transition fitting combination if the joined components differ in size or shape.
  • Tee - Joins perpendicular and angled pipe intersections with a tee fitting. The first pipe selected is broken, and is then attached to the second pipe. Tees are automatically selected from available manufacturer catalogs.
  • Cross - Joins perpendicular pipe intersections with a cross fitting, or a cross/transition fitting combination if the joined components differ in size or shape.
  • Wye - Joins pipe intersections at standard angles of 30°, 45° and 60° with a wye fitting.
Key-in: BMECH MANIPULATE JOIN < DSC=HVAC > < DSC=PLUMBING >