It is fixed at both ends.

The pilaster cannot sway or be levered.

Nor transmit movement to the door.

The opposite of a cantilever.

Nothing else is held top and bottom.

Because lighter systems rack slowly.

Not collapse - accumulation of movement.

Doors stop latching properly.

Fittings go out of line.

This arrangement does not develop it.

Substantially, with no gap above or below.

Sight lines between cubicles are closed.

Sound transfer is much reduced.

It is enclosure rather than screening.

Which some specifications now require.

It is what they are built on.

There is nothing to reach over.

And no gap to exploit.

Additional detailing is still needed.

But this is the starting arrangement.

Fixings top and bottom, both sound.

A known and consistent ceiling height.

And coordination with services above.

Ducts, lighting and sprinklers.

All against pilaster positions.

It becomes difficult and expensive.

Every pilaster is then a different height.

And the detail at the head changes.

Floor-anchored systems avoid the question.

This one cannot.

It has to be given some, deliberately.

A full-height cubicle is a sealed box.

It no longer breathes over its partitions.

So extract or a vent must be provided.

Plan it with the cubicle layout.