Mushroom Slab Review — geometry and scope
Select one existing Floor, then open Mushroom Slab Review in the BimSpeed.STR slab group or the standalone module Review button. Ribbon visibility depends on edition/module; package registration does not prove every edition shows the button. Review and Rebar share a shell with different starting tabs.
Shared window, every action and steel setting · Mushroom reinforcement
Walkthrough
- Read Floor boundary/holes, thickness, elevation and supports. The support reader accepts eligible vertical prismatic structural columns; curved/slanted supports, walls, beams and links require separate review.
- Adjust Inputs or Catalog when available. Review diagnostics and local U/V preview; apply edited Advanced JSON.
- Create/update geometry, close the window and inspect actual elements in a Revit 3D view. Preview/review export is not model output.
- Open Rebar after geometry is correct, resolve types, check readiness and create steel. Remove owned steel before updating unit geometry.
Supports, added drop depth and capitals
Select a Floor and inspect Floor/Inputs and dark support footprints before Create. Accepted supports are vertical prismatic structural columns intersecting the Floor at compatible elevations. Read NO_SUPPORTS/SUPPORT_SKIPPED reasons; manually supplied footprints are not columns read from the project.
Set proposed Width/Length and Depth below floor. The final outline is clipped by Floor boundaries/openings; Depth is additional depth below the soffit, not total slab thickness. Enable Capital and choose Height/Flare per side where required. Inspect a section and underside 3D view: plan appearance does not prove the sloped capital geometry.
For one support with different settings, use Advanced → Supports with its actual UniqueId. Null overrides inherit the global group; a replacement group is not a partial field-by-field merge. Explicit anchors use Floor-local U/V coordinates. Save JSON before editing and Apply full settings JSON afterward; unapplied text does not change the preview.
Create / Update writes positive DirectShape solids below the Floor. They do not become native Floor hosts for Drop Panel Rebar. Wider/deeper drops change envelopes subject to clipping. Capital height/flare change gross volume without subtracting overlapping columns. Inspect count, underside elevation, volume and openings in actual views, then Ctrl+S. The geometry examples below use separately documented support footprints; an empty Inputs preview is not successful creation evidence.
Geometry settings
| Control / setting | Unit, condition, effect and verification |
|---|---|
Drop.WidthMm / LengthMm | Proposed rectangular drop dimensions in mm, clipped to slab/holes. Inspect overlap diagnostics when enlarging. |
Drop.RotationDegrees / OffsetXMm / OffsetYMm | Rotation and offsets along the rotated rectangle axes from the support anchor. Inspect outlines and dark support footprints. |
Drop.DepthBelowFloorMm | Additional depth below the existing Floor underside, not total slab thickness. Check underside elevation and additional volume. |
Capital.Enabled / HeightMm / FlarePerSideMm | Enable the capital, height and per-side flare in mm. Supported geometry only; gross volume includes column overlap and is not net concrete. |
Supports[UniqueId].Enabled / Drop / Capital | Advanced: disable a support or replace an entire group. Null inherits global settings; a non-null group replaces the whole group. |
Supports[UniqueId].AnchorMm.X,Y | Explicit anchor in local U/V mm, not world XY. Inspect the anchor and outline after applying JSON. |
Verification, saving and limits
Positive geometry does not cut the Floor: envelope volume is neither plastic volume nor net concrete deduction. Save stores JSON; save the RVT separately. Reopen the command after host/support changes to refresh its snapshot. Cover changes cannot resolve stale-host errors.
Geometry evidence and download
Installed package 2026.10.23.2046, production service in Revit 2024. Geometry was created/updated, saved and reopened without void-cutting the original Floor. The ribbon entry was not invoked.
| Geometry case | Create | Same-input repeat | Update |
|---|---|---|---|
| Drop on an existing Floor | 1 | 1 | 1 |
| Drop/capitals with openings | 3 | 3 | 3 |
Mushroom receives manually supplied synthetic support footprints in the service. The download is a result for inspection, not an exact ribbon reproduction without matching columns. Its opening case has one drop element (potentially multiple solids) and two capitals. The full-window example below shows the drop case; an underside capital close-up remains missing.
The Inputs image uses an actual project Floor and 10 native column footprints. 1:2000×2000 mm drops,200 mm depth below the Floor underside, zero rotation/offset. 2: Capital is disabled;300 mm height and 200 mm flare do not create capitals while disabled. 3: the preview has 10 drops/0 capitals and 5.843 m³, with DROP_CLIPPED at boundaries/openings and DROP_OVERLAP. Read diagnostics before creating. Create was not run on this project host. The following committed/reopened model and Properties images are a separate educational case; their mark 1 identifies the model and Properties respectively.
Revit 2024 input/positive-geometry output package. Open the ACTUAL_3D/ACTUAL_PLAN views and read the per-host quantities/limits in README. Save/reopen completed before full-window capture was interrupted after five views; remaining angles/capital close-ups are not claimed.