Multi-Round Column Rebar 2.0
Open BimSpeed.STR → Column → Multi-Round Column Rebar 2.0 for circular column hosts. Qty is the total longitudinal bar count around the perimeter, unlike rectangular n(b)/n(h).
Workflow
- Save As and select circular structural columns. Check diameter and solid height; the category filter alone does not prove circular geometry.
- Select the group and story. Set cover, laps, hooks and footing zone under General; set Diameter, Qty, Dowel and Top Anchor under Main Bars.
- Choose compatible tie shapes/hooks, A/B/C mode and pitch under Stirrups. Set Structural Rebar diameter and spacing, then pick bar pairs in the section.
- Use Copy to other stories on the correct source row, then check every target story before Create Rebar.
- Inspect cross-sections and 3D output. Qty is the total perimeter count and the cage must respect cover. Save the result.
Settings and actions
| Control / group | Unit / choices | Effect and verification |
|---|---|---|
| Clear Cover | mm | Distance from concrete face to cage exterior. More cover shrinks the cage; inspect the generated section. |
| Lap Length / CutRebarLapMultiplier | ×D | Lap multiplier for cut bars; D is the affected bar diameter, not the tie diameter. |
| Lap Multiplier / LapLengthMultiplier | ×D | Lap multiplier changes overlap and bar length. Measure the resulting overlap in Revit. |
| Cut Bend | ×D | Bend length for terminated bars, measured in bar diameters; check the bend direction at termination. |
| Stirrup Offset | mm | Offsets the first tie from the story boundary. Measure from the column base to the first tie. |
| Support Zone Divisor | ratio | Divides the relevant length to obtain the end zone. A larger divisor makes that zone shorter; it is not tie spacing. |
| Top Anchor | mm | Top anchorage length affects rows with Top Anchor enabled. Inspect the highest bars. |
| Foundation Dowel Bend | mm | Horizontal footing dowel leg. Compare its direction and extent with the footing. |
| Separate Foundation Dowels | toggle | Separates foundation dowels from column main bars. Count dowels and column bars separately. |
| Story | read only | Story of the edited row. Select the intended story before editing or copying. |
| Diameter | RebarBarType | Select a bar type present in the model. Verify its actual diameter in Type Properties. |
| Dowel | toggle | Marks a dowel row; inspect the base anchorage and the lap above it. |
| Top Anchor | toggle | Enables anchorage for this row; it does not automatically apply to every story. |
| Shape / Hook / Diameter (Stirrups) | type | Select tie shape, hook and bar type independently from longitudinal bars; check all three before generation. |
| A / B / C | Uniform / Two zones / Three zones | A uses uniform spacing, B two zones and C three zones. Select the mode and inspect @Support and @Center. |
| @Support / @Center | mm | End-zone and middle-zone tie spacing. Smaller spacing increases density; one set quantity is not the whole column total. |
| Pairs Position / section picking | positions | Pick bars in the cross-section to define additional tie pairs. The position description records picks rather than editable coordinates. |
| Language | English / Tiếng Việt | Changes window language. Some labels or menus may remain in another language; project type names are retained. |
| Create Rebar | action | Creates model elements. Check existing reinforcement and use a copy before repeating; do not assume manual cages are automatically replaced. |
| Close | action | Closes the window. Saving the RVT remains a separate operation. |
| D / Hb | mm | D is read from the host. Hb is the intersecting beam depth used for the top region and can be edited per row; compare with the model. |
| Qty | bars | Total main bars around a circular section. Changing 8 to 10 adds two bars; do not use the rectangular perimeter formula. |
| Foundation Height | mm | Dowel-zone height in General. Compare with the actual footing base elevation; it is not the column height. |
| Level Param / Layer Param / Quantity Param | parameter | Parameters receiving level, layer and quantity. Unsuitable parameters may not be written; inspect Properties. |
| Auto Partition (Host Mark) | toggle | Uses the host mark for partition. Check both shared and model partition options before creation. |
| Structural Rebar: Diameter / Spacing / Pairs Position / Clear Pairs | type / mm / picks | Sets structural pair bar type and pitch. Clear Pairs clears configured pairs; it is not a command to delete committed model bars. |
| Copy to other stories / Delete | menu | Copy transfers settings to target stories. Delete on a group removes it from the working list. Verify scope before regenerating. |
Verification limit
The evidence below records created circular-host elements and unresolved warnings. Use separate copies for Qty 8 → 10 → 8: the perimeter should gain or lose exactly two bars. Test tie pitch 200 → 150 → 200 mm in the selected zone and verify actual Rebar rather than the canvas.
Copying, removing queued groups and assigning information
These actions change settings or the queued scope; they are separate from editing/deleting a model cage. Save a clean input before trying multi-story propagation.
| Field / button | Units / options | Scope | Effect and verification |
|---|---|---|---|
| Main Bars: source row | selection | circular-column window | Select a source story row before opening Copy. Selecting a row alone neither copies settings nor creates elements. |
| Main Bars: Copy to other stories | action | circular-column window | Opens destination stories in the current stack; OK copies Diameter, Qty, Dowel and Top Anchor. Targets can be below or above the source: inspect names rather than assuming upward-only propagation. |
| Stirrups: Copy to other stories | action | circular-column window | Copies Shape, Hook, Diameter, @Support, @Center and A/B/C mode to checked stories. It does not copy main-bar count. |
| Structural Rebar: Copy to other stories | action | circular-column window | Copies Diameter, Spacing and defined pairs rather than main-tie settings. Recheck the destination section pairs because its perimeter-bar count can differ. |
| Copy: story checkbox | toggle | destination-story dialog | Other stories default to checked and the source defaults to unchecked. The source is not locked as in some classic copy dialogs and Select All can check it. Review the entire list before OK. |
| Copy: Select All | action | destination-story dialog | Checks every dialog row, including the source, without applying settings. Avoid it for a one-target trial. |
| Copy: Deselect All | action | destination-story dialog | Clears every target check so a smaller scope can be selected; it deletes neither bars nor stories. |
| Copy: OK | action | destination-story dialog | Confirms targets and copies configuration. Back in the main table, inspect each target before Create Rebar. |
| Copy: Cancel | action | destination-story dialog | Abandons this copy operation and closes its dialog; it does not undo previous main-window edits. |
| Group list: Delete | context menu | circular-column window | Removes the selected group model from the generation list without deleting Revit elements. Review the list before running; previously generated bars still require separate checks. |
| Assign Info: Auto Partition | toggle | circular-column window | The shared choice propagates to models. Enabled partition assignment uses Host Mark; an empty Mark supplies no meaningful partition. Inspect one bar per group. |
| Stirrups: Auto Assign Partition | toggle | circular-column window | This is the current model’s choice, separate from the shared list-wide checkbox. After changing the shared option, recheck individual models before generating. |
Run scope and a controlled comparison
Create Rebar processes all column models in the loaded list, rather than only the selected row. Check the Mark, host diameter and each story before generating. For a column without a footing connection, enable dowels only when a suitable host region and connection detail exist; Foundation Height does not create extra concrete.
Save a clean input and use separate copies to compare main-bar count, diameter or tie spacing. A subsequent run is not guaranteed to replace the previous cage. Count main bars and ties separately, and inspect hosts and warnings before saving; a circular preview and completion message do not prove host containment. After Save, reopen the result and select a representative set to read Quantity, Diameter and Spacing in Properties.
Revit 2024.3 verification
The educational circular host measures 500 mm in diameter and 3500 mm high. The production window opened in both locales and all five visible categories were visited. Its generation process created and saved 8 sets: 6 D20 bars and 18 D6 ties. The ribbon entry and design adequacy were not verified.
Revit displayed two “Can't find a host for Rebar” warnings during generation. The UI's D cell reads 0 while the circular preview caption reads D=500; check the actual family and host dimensions. Selecting English leaves Vietnamese table headings and canvas labels, so those mixed-language UI screenshots are excluded here.