Curved Beam Rebar
Select one beam with an Arc axis, open Curved Beam Rebar, choose top/bottom reinforcement and stirrups, check cover/hooks, then OK. These captures use an instructional Arc beam added to the school-model copy.
Evidence scope: The Revit 2027.3 generation attempt failed with “These curves are not contiguous”. A completed curved-reinforcement result is not verified.
The application language was set to English, but this window still rendered Vietnamese labels. English UI screenshots are missing; the captured Vietnamese images are kept in the Vietnamese guide. Interface and behavior can differ between installation versions.
View the Vietnamese UI reference. An English-localized window has not been verified.
Every setting and action
| Control | Effect and verification |
|---|---|
| Nhìn xuyên (3D) / Solid | Change the tool's 3D rebar presentation; inspect the model view after generation. |
| Nhìn xuyên (2D) / Unobscured | Control unobscured reinforcement presentation; does not delete elements. |
| Main top — quantity / type | Quantity and bar type of the first top layer. Available quantities are 2–10. |
| Second top layer | Enable the second top layer and choose quantity/type; an enabled layer requires a valid bar type. |
| Second bottom layer | Enable the second bottom layer with its own quantity/type; each row describes its own layer. |
| Main bottom — quantity / type | Quantity and diameter for the first bottom layer; the schematic dots are not proof of generated quantities. |
| Stirrup type | Choose a model RebarBarType for stirrups; the captured D6 default is not a design recommendation. |
| End / Mid spacing | End/middle stirrup spacing in mm. Lower values request denser layouts; higher values request sparser layouts. Paired output comparison is unverified. |
| x1 / x2 | Top/bottom hook X components in mm as illustrated; inspect endpoint continuity. |
| y1 / y2 | Top/bottom hook Y components in mm; interact with layer 2 and cover. |
| Cover | Cover in mm; affects centerline placement together with stirrup/main-bar diameters. |
| OK | Validate bar types, save settings, then create reinforcement. Settings persistence does not prove generation committed. |
| Close | Close the window; the schematic is not a model result. |
Open the command and select a host
Open a 3D view, save a project copy and choose Curved Beam Rebar in the Beam group. When prompted, pick one Structural Framing Family Instance whose location curve is an Arc. A model line, straight beam or curved edge of another object is not that host. Esc cancels picking. The open model must contain the required Rebar Bar Types; the diameter lists are populated from that model.
Set each of the four layer rows separately and disable unused second layers before choosing stirrup type and spacing. Quantities are per row, not totals across layers: 3 bars in row 1 and 2 in row 2 are separate groups. Increasing the first top row from 3 to 4 also requires checking the clear width after cover and stirrup deductions; fixed schematic dots do not verify it. Compare middle spacing 200 versus150 mm only after a baseline generation succeeds. This capture has no successful baseline.
Inspect and save a successful run
OK checks the required bar types, saves choices and requests generation. Settings are saved before bar creation finishes, so values reappearing next time do not establish that the previous run succeeded. Close leaves the window.
After a successful run on a suitable model, use Selection Box around the curved host and set Detail Level to Fine. Inspect inner/outer arc bars, end/middle stirrup regions, top/bottom layers and hooks. Select a main bar for Host/Type and a stirrup set for Quantity/Spacing. Save As a result copy and reopen it to verify persistence. These are required inspection steps; successful result screenshots are unavailable for the exercised version.
Observed error and practice file
The attempted layout used 3D22 top, 3D22 bottom, both second layers off, D10 stirrups, 100/200 mm end/middle spacing and 25 mm cover. These curves are not contiguous occurred during bar-path creation; no completed curved cage is verified. Keep the warning, inspect actual elements/Undo on the copy, and avoid repeated generation on the same host to force an apparent success. Include Revit version, host dimensions/radius and the error when requesting support.
The Revit 2027 practice package includes the instructional Arc host and a beam-elevation alignment example; it does not contain verified curved reinforcement. Open a copy of alignment-result.rvt, open a 3D view and disable Section Box if it only encloses a straight beam. Zoom To Fit to find the Arc separated from the straight-beam run, then verify the host before trying. Retain the input separately rather than overwriting it with a failed run.