Who this guide is for
- Owners reading a fit-out drawing set for the first time
- Anyone comparing a partition schedule against a plan before work starts
- People preparing questions for an architect or designer about internal walls
- Readers who have found a wall type code and want to know what it governs
- Anyone checking that a drawing and a site condition still agree
What the pairing actually is
A plan shows where walls go; a schedule says what each one is. Read together they commit the building to a construction, and read apart they commit it to nothing in particular. The first thing to confirm is that every wall on the plan carries a type, and that every type on the schedule appears somewhere on a plan.
Unused types and untyped walls are both signals. One usually means a change that was made in one document and not the other; the other means a wall nobody has described.
What a wall type usually tells you
Most schedules describe the field of the wall: the framing, its spacing, the number and orientation of board layers, and whatever sits in the cavity. Some give an overall thickness, which is the dimension the rest of the layout was set out from.
Those are real commitments. Changing board, stud, infill or fixing takes a wall outside the construction that any supporting evidence relates to, which is why substitution on site is a design question rather than a purchasing one.
What is usually missing
The parts that decide how a wall behaves are commonly not in the schedule at all: what happens at the head, how the base meets the floor build-up, how the wall abuts an external wall or a separating construction, and what is required where services cross it.
Two other omissions matter for the owner rather than the builder: whether the wall stops at a ceiling line or continues to the structural soffit, and where concealed backing has been provided. Neither is visible in the finished room and both change what the wall can be used for.
- Head detail and the movement it accommodates
- Base condition where a floating or raised floor is involved
- Abutment with external walls and separating construction
- Whether the wall runs to the soffit or stops low
- Concealed backing positions
- What is required at penetrations
Reading a shaft wall in a schedule
Some types on a schedule cannot be built the way the others are. A riser enclosure is erected storey by storey, its far face is closed permanently the moment a panel is entered, and its penetrations are designed rather than cut. From the corridor it looks like every other boarded partition.
If a type is one of these, that is worth knowing before the fit-out plans its own penetrations, because an unplanned hole through such a wall is disproportionately awkward.
Where the drawing meets the authority for it
A schedule reproduces a construction; it does not determine performance. Fire and acoustic duties are determined by qualified professionals and the relevant authority against tested arrangements, and the schedule's job is to reproduce that arrangement accurately, including its junctions.
Reproducing a build-up layer for layer is not the same as reproducing the conditions the evidence relates to, which is one reason the junction details matter as much as the wall types do.
What to ask the person who drew it
The most useful questions are the ones the document does not answer. Which walls run to the soffit. What the head detail is and what movement it allows. Where backing was required. What happens where each type meets the envelope and where it meets a separating wall.
Asking them while the schedule is still being developed costs a conversation. Asking afterwards means comparing a finished wall against a document that never described the part in question.
Partition schedule reading checklist
- 1Confirm every wall on the plan carries a type reference
- 2Confirm every type on the schedule is used somewhere on the plan
- 3Note the overall thickness each type commits the layout to
- 4Check whether the schedule says where each type stops in height
- 5Look for a head detail and the movement it is arranged to accommodate
- 6Look for a base condition where a floating or raised floor is involved
- 7Find the abutment details with external walls and separating construction
- 8Ask which types cannot be built or penetrated from both sides
- 9Ask where concealed backing is required and whether it is scheduled anywhere
- 10Check what the schedule says about penetrations and who closes them
- 11Ask who determined any fire or acoustic duty attached to each type
- 12Confirm which document governs if the schedule and a detail disagree
- 13Keep the schedule with the handover information rather than only on site
Common mistakes to avoid
- Reading the wall type and not the junction details that go with it
- Assuming a type describes the head as well as the field of the wall
- Missing that a wall stops at the ceiling line rather than the soffit
- Substituting a board, stud or infill on site without going back to the designer
- Treating a riser enclosure as an ordinary type because it is drawn like one
- Letting plan and schedule diverge after a layout change
- Losing the schedule at handover, when it is the only record of what was built
When to involve a professional
- Construction drawings should be produced or stamped by qualified professionals as required by jurisdiction
- Fire and acoustic duties attached to a wall type are determined by qualified professionals and the relevant authority
- Any change of board, stud, infill, tie or fixing takes a wall outside the construction the supporting evidence relates to
- Head movement allowances come from the structural design of the specific building
- Which document governs where a schedule and a detail disagree is settled by the design team, not on site
Frequently asked questions
Questions readers ask about this topic
What does a wall type reference actually commit the building to?
The construction of the field of the wall — framing, board layers and infill — and usually an overall thickness the layout was set out from. It commits much less about the head, the base and the abutments, which is where behaviour is decided.
Why does it matter whether a wall stops at the ceiling?
Because a partition taken to the structural soffit and one stopped at a ceiling look identical in the room and behave differently above it. Where it stops low, the void runs straight over a division that was drawn as a division.
Can a contractor substitute an equivalent board?
Substitution takes a wall outside the construction that any supporting evidence relates to, so it is a design question rather than a purchasing one. Whether an alternative is acceptable is confirmed by the design team against the documentation they were working from.
Should the schedule be kept after the work is finished?
Yes, because once walls are decorated it is the only description of what is inside them. Together with a record of concealed backing and buried services it is what turns a later alteration into a drawn job rather than an exploratory cut.
What if the schedule and a detail drawing disagree?
Which document governs is settled by the project's own design team, and asking the question early is more useful than resolving it on site. A disagreement between two drawings is usually a change that was made in one of them and not the other.
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