Plan blocks vs elevation blocks: what's the difference?

What a plan block shows

A plan block is the object seen from above, looking straight down — the same viewpoint as a floor plan. A plan sofa shows the rectangular outline of the seat and arms as you would see them from the ceiling; a plan tree shows the canopy as a circle or organic blob seen from overhead. Plan blocks are about footprint and position: where the object sits and how much floor it occupies.

This is the view you use for space planning. Arranging furniture in a room, laying trees along a site, positioning fixtures in a bathroom — all of it happens in plan, because plan is where you check clearances, circulation and layout. The bulk of CAD blocks people insert are plan blocks, for exactly this reason.

What an elevation block shows

An elevation block is the object seen face-on from the side, the way you would see it standing in front of it. An elevation sofa shows its height, the back, the arm profile and the seat line; an elevation tree (like a palm) shows the trunk and the spread of the canopy as a vertical silhouette. Elevation blocks are about height and front appearance.

You use elevation blocks in interior elevations, building elevations, sections and presentation drawings — anywhere the drawing shows a vertical face rather than a horizontal layout. An elevation palm dressing the front of a building, or an elevation chair shown against a desk in an interior elevation, gives the drawing its sense of height and human scale.

Why one object often needs both

A full drawing set describes a space from multiple directions, so the same object frequently appears in both plan and elevation. A sofa is drawn in plan on the furniture layout and again in elevation on the interior elevation of that wall; both are the same sofa, viewed differently. Using the plan block in the elevation, or vice versa, produces a drawing that is simply wrong — an outline that does not match how the object would actually appear from that direction.

This is why many blocks ship multiple views in one file: you insert the plan view for the layout and the elevation view for the elevation, drawing both from a single download. Keeping the views together saves hunting for a matching pair and guarantees they represent the same object.

Side view, top view and section too

Plan and elevation are the headline pair, but they are not the only views. A side view (or end elevation) shows the object from the side rather than the front — a sofa seen from its arm end, useful where a front elevation does not tell the whole story. A top view is essentially the plan, sometimes distinguished for objects where 'plan' implies a building context.

A section shows the object cut through, revealing internal heights — relevant for things like a built-in unit or a piece of furniture tucked under a worktop. For most furniture and entourage you will only ever need plan and elevation, but knowing the fuller set helps when you meet a block offering side views or sections and need to decide which serves your drawing.

Picking the right view for the job

The rule is simple: match the block's view to the drawing's view. Working on a floor plan or site plan? Use plan blocks. Working on an elevation, a section, or an interior elevation? Use elevation (or side-view) blocks. Producing a presentation board or a hand-off set? You will likely use both, on the plan sheets and the elevation sheets respectively.

A quick gut check before inserting: imagine standing where the drawing's viewer stands. On a plan, you are floating above looking down — a plan block is what you would see. On an elevation, you are standing in front looking horizontally — an elevation block is what you would see. If the block you are about to insert doesn't match that mental image, you have grabbed the wrong view.

Telling the views apart when downloading

On a good block library, the view is labelled, so you do not have to guess. This site tags each block — plan, elevation, side view, top view, section — and the name usually says it too: a 'sofa set plan' is a plan view, a 'palm elevation' is an elevation. Check the label and the preview image before downloading so the block matches the drawing you are building.

- Plan: seen from above, for floor plans, site plans, layouts - Elevation: seen face-on, for elevations, sections, presentations - Side view: seen from the side, where a front elevation isn't enough - Many blocks bundle plan and elevation in one file

With the views clearly labelled, choosing the right one is a matter of reading the tag and matching it to your drawing, not opening files to check.