Design and Visual Communication - Resolving and Communicating Design at Level 3
What this domain assesses
Level 3 Design and Visual Communication (DVC) shifts emphasis from making drawings to resolving a design and communicating it precisely enough for someone else to build it. Achievement standards cover initiating design ideas through exploration, resolving a spatial or product design through graphics practice, and producing working drawings. Assessors read the design thinking in the drawings themselves: alternatives, tests, annotation and justified decisions - not rendering polish.
Core rules and conventions
- Exploration must be divergent then convergent: annotated concepts, mock-ups or material tests, and clearly rejected options. One polished outcome does not meet "initiate through exploration".
- Keep a consistent line hierarchy at final print size: thick outlines (about 0.7 mm), thin dimension, centre and leader lines (about 0.35 mm), dashed hidden detail, 45° hatching.
- State the projection system. First-angle is the New Zealand default; third-angle must carry its symbol.
- Dimension visible features only - never hidden lines, never the same feature twice. Include overall sizes, radii (R) and diameters (⌀).
- A working-drawing set needs orthographic views, sections with cutting-plane lines, detail and assembly views, a parts list, and stated scale and units.
- Spatial work: plan, elevations, sections, site orientation, circulation, ergonomics and a human figure for scale. Product work: exploded views, joining methods, finishes and tolerances.
Worked example
Brief: a wall-mounted bike rack for a school shed. Exploration annotates three concepts - hook, cradle, clamp - with load path and fixing method, then justifies the clamp in recycled HDPE over mild steel on weight, corrosion and cost. The resolved set contains 1:5 orthographic views giving fixing centres and arm spacing; a 1:1 detail of the arm-to-plate joint showing weld symbol and material; an exploded isometric; and a parts list with a specified finish ("powder-coated, RAL 7016"). Reasoning: the 1:1 detail carries production-critical joint information, while the 1:5 views carry overall size and installation.
Traps that cost marks
- A tidy linear process with no rejected ideas or testing evidence.
- Mixed projection conventions, or line weights that collapse in print.
- Dimensioning to hidden edges, or omitting overall dimensions.
- Vague specification - "painted", "fits well" - instead of stated values.
- Calling an oblique sketch "perspective" when it has no consistent vanishing geometry.