The record

Every dimension in the set is a named constant taken off M = 3.7 m: PB = 2M (7.400 structural bay), LW = 6M and LD = 8M (the 22.200 × 29.600 lot), HL = 3M and HW = 2M (the 11.100 × 7.400 slab), WT = M/10 (0.370 wall), WH = M (3.700 head, one lift), VR = M/2 (1.850 vault radius), RIDGE = WH + VR (5.550), COURSE = M/5 (0.740, five to a lift), LAYER = M/100 (0.037, commented “the rival’s layer”), FIG = M/2 (1.850, a figure), CUTX = 9.250 (section A–A).

Sheet A104 carries three openings, all centred in the cast panels and all on the module: a DOOR 0.740 wide from 0 to 2.220 at HX0 + 0.5M, and two WINDOWs 1.480 wide between 0.740 and 2.220 at 1.5M and 2.5M. Both halves of the split draw those same openings at the same coordinates.

One projection carries all four sheets: sx = ox + (x cos θ − y sin θ)s, sy = oy + (x sin θ + y cos θ)Ls − zs, with L = 1 a true rotated plan (military) and L = 0 orthographic. The source notes that z is true at every L, which is why the scale is stated on z and one scale bar holds across the set. The axonometric sheets stand at TH_AXO = −0.56 rad, L_AXO = 0.55; five of the nine beats (0, 2, 3, 6, 8) are camera-locked, and a drag there stops the film rather than turning the sheet.

Scale is never fitted freely. PPM1 = 3779.527559 is one metre in CSS pixels at 1:1, 96 ppi; SERIES holds thirty drafting ratios from 1:10 to 1:8000, and fitBox takes the first ratio in that series the box can hold. Every 1:N printed on a sheet is therefore a ratio off that list.

The comparison bubbles are drawn at 1:20 because at that ratio a 0.037 layer stands 7.0 px high; the engine then strikes a tick at every layer and numbers every fifth. The comment on that block says the ribs “are not a claim in a schedule — they are countable with a finger”, so the reader is not asked to take the table’s word for the count.

The film is nine beats with per-beat timings written out: HOLD = [2600, 4800, 4200, 4400, 3800, 5000, 5400, 4600, 5800] ms of dwell, GROW = [500, 2800, 2000, 1800, 1800, 3200, 2800, 2200, 3200] ms of draw-in. One unattended pass is 40.6 seconds of dwell.

The plate is a 2+ megapixel canvas and is gated twice so it never repaints off screen: an IntersectionObserver that is never disconnected, and the loop checking its own bounding rect every 380 ms and shutting itself off — “Two independent legs, and neither one latches open after the first intersect.” Asleep, it runs one rect read every 700 ms, so a host that swallows a scroll event cannot leave it asleep.

The set injects its own stylesheet at boot, and one declaration in it is annotated as load-bearing: position:relative on the canvas, because the site stylesheet carries a bare global canvas{position:fixed;top:0;left:0} left from the homepage background canvas, and without it the whole sheet floats over the page pinned to the corner.

The small sheet is a re-cut rather than a shrink, and each fix is recorded with the band it was made for. Below 900 px the sheet takes a single column, because it used to overprint itself between 640 and 900 px, where notes set at a fixed size met columns struck off MAIN.w. On a phone the A102 plan carries eleven strings inside 322 points, so each dimension string states the number alone and the module note under the drawing carries what it is a multiple of; the “6 × 3.700” chain caption is not drawn there at all, its clear lane being eight pixels wide.

v1.2, linked above, is one wall and one lift: an eight-step formwork sequence — SITE, CRAWLERS, SCAFFOLD, FORMWORK, MOULD SET, POUR, STRIP, CLIMB — hand-drawn as a single 1000 × 620 SVG at 1:50, section A–A, with two named crawlers, UNIT A and UNIT B, and a rival stack of 39 hard-coded <line> ribs. Its one dimension string reads LIFT 01 · 3.70 M, so the module predates the rewrite.

The revision note on this page reads v1.3. The engine source carries a later fix annotated v1.3.1 — the general-notes and tones split on sheet A103, where between about 900 and 957 px note 1 ran into the CAST IN SITU swatch, now measured off the longest note itself rather than a ratio of MAIN.w. The page is one point behind its own source.