Interior Graphics II

A working drawing is a measured, dimensioned, coded instruction to BUILD — a legal, technical document, not a persuasion. The defining distinction of the course: the working (construction) drawing versus the presentation drawing — different audience, content, style and rules. The coordinated interior drawing SET and its reading order from general to particular — cover and legend, the general-arrangement plan (the single source of truth), furniture plan, reflected ceiling plan (which is NOT the floor plan flipped), finishes and services layouts, internal elevations, sections, details and schedules — descending in scale and ascending in resolution, keyed forward and back. The title block, systematic drawing numbering, the revision table and cloud, and the preferred scale series. India: first-angle projection, IS 962, IS 10711 sheet sizes.

The language that makes a drawing buildable. Dimensioning systems — chain (running) versus parallel (baseline) dimensioning and why the baseline eliminates cumulative error — the overall-then-sub rule, and the crucial interior distinction between dimensioning to STRUCTURE and to FINISH. Grid and datum lines, finished floor level and level markers. Annotation — leaders, notes, the north point, section marks and detail bubbles, and door/window tags. The LINE-WEIGHT hierarchy carried to professional standard (thickest = the cut, medium = seen, thin = surface/dimensions, thinnest = grid/hidden) as INFORMATION, not decoration. And schedules — door, window, furniture, finishes and ironmongery — where the tag is the hinge and the schedule is the single source of truth. India: IS 11669, IS 9609.

The technical heart of the course. Internal elevations of interior walls — the finished vertical face, panelling and tiling, joinery fronts, fixture heights and datum levels — keyed from the plan by the segmented-circle interior-elevation symbol. Sections through the space and through elements — the cut plane drawn heaviest, everything beyond in lighter weight. Large-scale construction details (1:10, 1:5, 1:1): the joinery/millwork section (wardrobe or cabinet), the false-ceiling section, the flooring build-up, the door/window jamb, and the skirting and cornice profiles. Materials shown in section — the poché / hatching conventions (brick, concrete, timber, stone, insulation, glass, metal) that identify the CUT material. And cross-referencing — the detail bubble that keys a detail back to its origin so it is never orphaned.

Drawing for the client, by hand. The perspective vocabulary — station point, picture plane, ground and horizon lines, vanishing points, the ~60° cone of vision, and measuring points that transfer TRUE scaled depths so they are not guessed. One-point perspective (the room interior, back wall parallel to the picture plane, converging to a single VP) and two-point perspective (a corner or an object, two VPs on the horizon), with the three-point case as awareness. Constructing an interior perspective from a plan — geometry first, confident line-work over it, then tone. Rendering media (pencil, ink, marker, watercolour, coloured pencil) and technique — a single light source and its cast shadows, a value scale (value, not colour, does the spatial work), texture and material rendering, reflections, and entourage (plants, people at the horizon, and light itself) with Indian figures reading as Indian.

The drawing craft of persuasion. The presentation set for an interior scheme — rendered floor plan (a working plan stripped of instruction and dressed in colour, shadow and life), rendered elevations, the hero perspective, a concept/mood element and a materials palette. Sheet composition — the invisible modular grid, hierarchy and the single lead image, reading order and the design narrative, alignment, white (negative) space, a quiet consistent title block, and balance. Rendering a plan/elevation for presentation versus for construction (dimensions and tags OUT; colour, cast shadow and entourage IN). Digital versus hand presentation as a hybrid, with the composition principles identical in both — cross-linked to Computer Studio. And the professional board and portfolio — a master template so a multi-board set reads as one voice, telling the scheme's story as an edited argument.