Stair Rebar 2.0
The images identify controls in the exercised build. Read the version and run limitations below before applying the workflow. Proposed exercises are not verified results; no accepted result-model download is available for this tool.
BimSpeed.STR → Stair → Stair Rebar 2.0 selects one or several elements before opening the editor. Recognition tries Stairs API, family parameters and section profile. Failed recognition can still open the editor for guided picking in a single-element case.
- Select stairs and Finish. Read the source badge, failure reason, recognized batch count and warnings. Preview uses the first recognized element; it does not establish identical geometry throughout the batch.
- Choose one of eight layouts: Type1, Type1 unfolded, Type2, Type3, Type5, Type6, Landing and Stair beam. Read illustrations and point instructions. Stairs API recognition currently rejects U-turn/curved runs; runs must share the longitudinal direction within about 5°. Revit Stairs category alone does not establish support.
- For one element, use Pick 3 points to supply geometry when needed. The button name does not mean every layout uses exactly three points: follow that layout's prompts. Switching layout can require picking again; mismatched geometry is checked before creation.
- Review parameter and diameter tabs. −/+ zoom the preview from 1 to 4 times; Fit restores it. Illustrations and model preview are distinct from committed Rebar.
- Draw Rebar processes recognized elements and reports successful stairs, bar count and per-element errors. A partial batch is not full success. Reset Temporary Hide/Isolate if it hides new bars.
Presets and saving
Select a preset name to load it. Save/Delete manage configuration, not model bars. Closing persists last-used settings. Save As the RVT after inspecting native Rebar, and reopen the prepared view.
Native result verification
Use a copy and inspect bottom, top, distribution and beam-tie groups separately: diameter, Quantity, Spacing, host, end geometry and bar plane. Missing bar types and invalid geometry are reported before creation; transaction errors roll back that item. A multi-element run can have partial results.
Proposed exercise: decrease pitch 150 → 100 mm and verify increased count, then 200 mm for fewer bars. Change only top diameter and verify bottom bars remain unchanged. No accepted input/result model pair for these exercises is available from this pass.
Settings
| Control | Unit / choices | Effect and verification |
|---|---|---|
| Layout / source badge / batch summary | Choice; information | Recognition scope and preview source; read per-item failures. |
| Model / illustrations / overview / points / A,B details | Tabs | Separates recognized geometry from guidance. |
| − / + / Fit | 1–4× zoom | Display only; does not resize bars. |
| Preset / Save / Delete | Name; buttons | Loads or manages configuration, not existing model Rebar. |
| Cover / Spacing | mm | Cover and distribution pitch; inspect actual section and Quantity. |
| Beam B / H | mm; Stair beam only | Section dimensions for Dam layout. |
| Slab thickness | mm | Displayed slab thickness input; compare with the real host; does not resize the host. |
| Anchor length | mm; except Landing and Type6 | Layout-specific anchorage; hidden for other branches. |
| Top reach | mm; anchorage layouts except Type5 | Top-bar reach, separate from anchor length. |
| F1 | mm; Type1/2/3 | Illustrated F1 segment. |
| F2 | mm; Type1/3 | Illustrated F2; do not infer an effect when hidden. |
| L1 | mm; Type1 | Illustrated landing segment L1. |
| L2 | mm; Type1/2 | Illustrated segment L2. |
| Extension | mm; Type1/3 | Illustrated extension; inspect native ends. |
| Bottom / top / distribution / beam-tie diameters | mm | Four independent roles. Distribution diameter hides for Stair beam; matching bar types must exist. |
| Pick 3 points | Button; one-element batch | Supplies layout geometry; not exposed like a single case in a multi-element batch. |
| Draw Rebar / Close | Buttons | Queues creation or closes and persists settings; avoid repeated clicks while processing. |
UI and locale limitation
The actual dialog was opened in Revit 2024. This build kept Vietnamese labels when English was requested, so its Vietnamese images are not presented here as English UI evidence. Model and Illustration are distinct tabs; an unrecognized host leaves Create Rebar disabled. Editing presets or diameters alone does not create usable stair geometry.
Read the recognition badge and per-host failure/warnings before generating. A batch can contain recognized and failed hosts; the first preview does not establish all-host success.
Locate F1, F2, L1 and L2
The following endpoints describe V2 Type1, not a universal stair dimension. In its point illustration P3–P4 follow the soffit, P1/P2 mark the low end, P5/P6 the outer high landing and P7/P8 its flight junction. The illustration explains direction; V2 reads actual section geometry.
| Field | Availability / units | What changes and how to check |
|---|---|---|
| Cover | All layouts; mm | Offsets layers normal to the slab face; bar-centre distance also includes half its diameter. Change 20→25 and inspect a section normal to the slab, not only global Z. |
| Spacing | All layouts; mm | Maximum set spacing. Actual pitch can be smaller to fill the distribution range. Compare 150→100→200 using the same role's Quantity and Spacing; element count is not bar quantity. |
| B Beam | Beam only; mm | Tie section width and four main-bar corner positions. Keep H/cover fixed and measure the transverse tie; B must exceed twice cover. |
| H Beam | Beam only; mm | Depth below the reference top and tie height. Inspect its lower edge; H must exceed twice cover. |
| Slab thickness | Single-host guided-pick branch; mm | Thickness of the picked geometry, not cover or storey height. Measure normal to the real slab face. |
| Anchor length A1 | Hidden for Landing and Type6; mm | Layout-dependent end anchorage: unbent Type1 extends into the landing; Type5 anchors the outer ends of continuous bars. Inspect the relevant role/end. |
| Top reach A | Anchor group except Type5; mm | Type1 cap reach from the landing junction into the flight. Increase A and inspect the cap coverage, not the stair width. |
| F1 | Type1, Type2, Type3; mm | Type1 high-end bottom-bar anchorage; Type2 inner-flight hook near the high junction and extra reinforcement; Type3 termination into the middle landing. Change F1 alone and inspect that junction. |
| F2 | Type1, Type3; mm | Type1 low-end bottom-bar anchorage; Type3 low-flight foot hook. Keep F1 fixed and inspect the low end. |
| L1 Landing | Type1 only; mm | Cap fold at the outer landing side, around the P5/P6 region and away from the flight junction. Inspect the applicable cap end after changing it. |
| L2 Landing | Type1, Type2; mm | Type1 cap fold at the flight-reaching side near P7/P8; Type2 extra-bar anchorage into the low landing. Inspect that role, not L1's outer end. |
| Extension | Type1, Type3; mm | Type1 run beyond the offset flight end before its fold; Type3 run into the middle landing, sometimes collinear with F1. Measure from the actual junction. |
| Main diameter | All layouts; mm | Bottom/main role; inspect its native type and diameter separately from the cap. |
| Top/cap diameter | All layouts; mm | ThepMu or ThepTren role. Change 10→12 and confirm the bottom role retains its old diameter. |
| Distribution diameter | Non-Beam layouts; mm | Bars transverse to the flight/landing; select that direction separately. |
| Stirrup diameter | Effective for Beam; mm | Dam_Dai ties; does not change the four corner-bar diameters. |
Long Type1 F/L values can fold along the slab face to retain the anchorage within its envelope. Entering 300 mm does not guarantee a 300 mm vertical leg. A high end without a recognized landing also takes a different anchorage path. Inspect the entire native shape and containment, not only the diagram.
Type1/unbent Type1/Type2 need a flight; Type3 needs compatible flights and a middle landing. Type5/6 run through the segment chain. Landing generates only for Landing segments. Beam needs a Beam or Landing reference and does not create a native framing host. Type5 hides A although its creation logic can retain/use A from configuration; review the preset when switching layouts.
Buttons and regeneration
−/+, Fit alter preview zoom, not model size. Model shows the recognized proposal; Illustration and its Overview/Point labels/Detail A/B are references. Save/Delete manage presets, not Rebar or RVT files. Close persists configuration; Revit Save As saves the document.
Pick 3 points appears only for a single-host batch; follow the actual layout prompts rather than assuming exactly three points. Esc cancels pending picking. Create Rebar handles recognized hosts and reports failures separately. Resolve layout/geometry mismatches first.
The creator creates new Rebar; do not assume the second run replaces every old bar. Compare alternatives using Undo or separate model copies. Reopen a saved result in a new session and inspect the same role's type, Quantity, Spacing and remaining warnings.