Rectangle to pipe, 90°: duct pattern
A rectangular duct with rounded corners runs square into a round trunk, on its centre line or off it, as on a rectangular take-off from a round main. The duct is developed flat, its end cut to the curve of the trunk, its corners at their true length.
A rectangular duct square to a round trunk, on its centre line or off it; the pattern is the duct.
Sizes you enter
- Trunk diameter (Dt): Across the trunk; the duct is cut to fit it as given.
- Duct width (W): Across the duct, seen from above, on the surface chosen under Sheet.
- Duct height (Hr): The duct from its bottom to its top, on the surface chosen under Sheet.
- Corner radius (r): The duct's corners, seen end on, on the surface chosen under Sheet (0: sharp).
- Duct length (L): From the trunk's centre line to the duct's open end.
- Offset (Z): Seen from above: the duct's centre line off the trunk's (0: on centre).
What you get
The exact flat pattern of the part, worked out for the sheet thickness measured on the inside, the mean or the outside, with numbered press lines, the part in 3D, its weight and cutting length, and a DXF for laser, plasma or waterjet cutting (STEP as well).