Floor plans, elevations and sections: what each drawing tells you

Use plans for horizontal relationships

Start with the position of rooms, walls and circulation on each floor. A plan is useful for comparing adjacency and tracing movement. Its annotations may include references to other sheets, which are part of the information rather than decoration. When a height or roof condition is absent, note that absence. A plan symbol can identify an opening, but another drawing may be needed to understand its vertical size and placement.

Use elevations for visible faces

An elevation describes a building face viewed from a particular direction. It can clarify window arrangements, exterior proportions and changes in material. Check that the face shown corresponds to the side of the plan you are studying. If an opening appears in an elevation but not in the plan, compare revision dates before assuming an error. The conflict may reflect a change that has not been coordinated across the set.

Use sections to understand depth and height

A section cuts through the building and helps explain floor levels, ceiling relationships and the spaces above or below a room. Follow the section marker on the plan to understand where that cut occurs. A single section does not describe every location, so avoid extending a local condition across the entire building without evidence. Sloping roofs, stepped floors and double-height spaces are especially easy to oversimplify when only the plan is modeled.

Build a cross-reference list

For each important modeling decision, identify which sheet supports it. A room width may come from the plan, an opening height from an elevation and a ceiling relationship from a section. When the sheets disagree, put the discrepancy on the review list. TranslateDesign's current room-envelope study simplifies rooms to rectangular boxes; it should not be used to imply that roof geometry or detailed openings have been reconstructed.

• Match orientation and revision across the drawing set.
• Follow section and elevation references rather than guessing.
• Keep unresolved cross-sheet conflicts visible.
• Choose a modeling scope that the source evidence supports.