Freehand and Technical Sketching, Presentation of Architectural Ideas
This domain covers the whole path from a loose concept sketch to a finished presentation sheet. It tests whether your sketching is controlled - built from construction geometry rather than guessed - and whether the presentation communicates the idea before it decorates it.
Sketching as a thinking tool
- Start with a bounding box or envelope, then subdivide; measure proportions comparatively (compare a height to a known width) rather than by absolute size.
- Draw with single confident strokes from the shoulder, rotating the sheet instead of bending the wrist; keep construction lines light and leave them visible.
- Use negative space and centre lines to check symmetry; correct by overlay rather than erasing.
Perspective
- The horizon is at the eye level of the viewer - about 1.60–1.70 m standing - and is the same line for every object in the view.
- One-point perspective for interiors and axial views; two-point for exteriors.
- Keep vanishing points well apart: the station point at roughly 30°–60° to the picture plane, held inside a cone of vision of about 60°, or the building distorts.
- Only the nearest vertical edge is measurable; take heights on it and carry them to the vanishing points.
Axonometric and presentation
- Isometric at 30°/30°, plan oblique or dimetric where no vanishing points are wanted, typically for explaining construction or a corner junction.
- Board composition: one dominant image, a legible 1:100 or 1:50 plan, a scale bar, a north point, title and drawing number; one graphic style and one line weight family throughout.
- Entourage, shadow and texture explain depth and scale; they should never obscure geometry.
Worked example
Two-point perspective of a house corner. Reasoning: set the horizon at 1.6 m so the viewer reads the building from the garden. Rotate the plan about 30° to the picture plane so the long façade is less foreshortened than the short one. Place the station point about twice the building width from the near corner to keep the vanishing points far apart. Project both vanishing points to the horizon, measure the near vertical corner to scale, then take every other height from it.
Traps
- Vanishing points too close, producing a fish-eye building.
- Horizon at roof level while the ground plane is drawn from eye level.
- Inconsistent eye level between two views on the same board.
- Mixed lettering styles or three different rendering media across one sheet.
- A presentation drawing without a scale bar, north point or title.
- A freehand sketch offered where the question asked for a dimensioned technical drawing.