STRUCTURE & SITE

Attach Wall.

Attach architectural wall tops to floors or roofs living in a linked structural file — WALL_TOP_OFFSET is set automatically, with sloped slabs and rotated links handled.

01 · THE PROBLEM

In Revit, the native Attach Top/Base command can't read a floor or roof living inside a linked structural file — architects have to fake it with hand-built reference planes before attaching each wall one by one. Every time structural adjusts a slab elevation, the whole batch of walls has to be redone.

150–300 tường

Attaching walls one at a time via Attach Top/Base

Because the native Attach Top/Base command can't see a floor or roof living in a linked file, engineers open each wall, build a reference plane at the structural slab's elevation by hand, and only then attach it — repeated across hundreds of walls per floor.

sai vài cm/điểm

Hand-calculating WALL_TOP_OFFSET for sloped slabs

When the underside of a slab or roof follows a slope, WALL_TOP_OFFSET stops being a single number — hand-worked trigonometry drifts by a few centimetres at each point, leaving gaps or walls poking through the slab once you check the 3D view.

link xoay = attach fail

A rotated structural link throws the attach off

Coordination projects often place the structural file rotated off true north from the architectural one; attaching by absolute Z elevation then gets it wrong because the real slab plane sits skewed in the host's coordinate system, forcing a manual coordinate conversion before the offset can even be worked out.

join lại từng cặp

Still have to hand-join geometry after attaching

Attaching the wall top doesn't automatically join it to the adjacent columns, beams or slabs — skip that step and stray lines show up in section views, throwing off quantity schedules.

02 · FEATURES

What it does

There's no Autodesk App Store add-in that publicly solves "attach an architectural wall top to a floor or roof living in a linked file" — even Autodesk's own community forum flags it as a limitation of the native Attach Top/Base command, which simply doesn't read floors or roofs from a linked model. The usual workaround is copy-monitor or hand-built reference planes per wall. AttachWall reads the linked floor/roof geometry directly, computes WALL_TOP_OFFSET automatically even for sloped slabs or rotated links, then re-joins afterwards — specifically:

A

Attach across the link

  • Reads floors and roofs from the linked structural file
  • Sets WALL_TOP_OFFSET automatically per wall
  • Handles sloped slabs and rotated links
  • Auto-joins touching elements in the host model afterwards
TOOL INTERFACE · RUNNING IN REVIT

Operational interface and functional overview

The interface is matched to the tool window running in Revit.

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