Rectangle to pipe, 90°: trunk 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 trunk is developed flat with the exact hole the duct cuts in it.
A rectangular duct square to a round trunk, on its centre line or off it; the pattern is the trunk with its hole.
Sizes you enter
- Trunk diameter (Dt): Across the trunk, on the surface chosen under Sheet.
- Trunk height (H): Overall height of the trunk.
- Duct width (W): Across the duct, seen from above; the hole is cut to the duct as given.
- Duct height (Hr): The duct from its bottom to its top.
- Corner radius (r): The duct's corners, seen end on (0: sharp).
- Duct height up the trunk (Hb): From the trunk's bottom to the duct's centre line.
- 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).