museum.arch

# A ~100 x 60 m single-level museum — the LARGE-BUILDING flagship.
#
# What this example is for: everything else in examples/ is a dwelling, where the old
# "every size is a fraction of the drawing" rule happens to look right. At 100 m it does
# not — room labels come out metres tall. So this plan declares a SHEET:
#
#   paper A1 landscape   the drawing is issued on a real 841 x 594 mm sheet
#   scale 1:200          which makes every annotation a fixed size ON THAT SHEET
#                        (3.5 mm room labels, 0.5 mm wall lines, 15 mm margins)
#
# A1 at 1:200 is the conventional GB/T presentation for a public building of this size:
# the 100 x 60 m footprint lands at 500 x 300 mm of ink with room for the three
# dimension chains and the title block. Drop the `scale` line and the sheet auto-fits
# the finest of 1:50 / 1:100 / 1:200 / 1:500 that fits — here, the same 1:200.
plan "City Museum" {
  units mm
  grid 100
  paper A1 landscape
  scale 1:200
  north up
  dims auto all

  # ---- shell + structure ----------------------------------------------------
  wall id=shell exterior thickness 300 { (0,0) (100000,0) (100000,60000) (0,60000) close }

  # The spine: one 6 m corridor the full width of the building, with everything
  # opening off it. Its two faces are the only walls the galleries need.
  wall id=spine_n partition thickness 200 { (0,26000) (100000,26000) }
  wall id=spine_s partition thickness 200 { (0,32000) (100000,32000) }

  # North row dividers (galleries, then the service wing at the east end).
  wall partition thickness 200 { (26000,0) (26000,26000) }
  wall partition thickness 200 { (52000,0) (52000,26000) }
  wall partition thickness 200 { (78000,0) (78000,26000) }
  wall partition thickness 200 { (78000,14000) (100000,14000) }

  # South row dividers (galleries, entrance hall, the WC stack and the cafe).
  wall partition thickness 200 { (30000,32000) (30000,60000) }
  wall partition thickness 200 { (48000,32000) (48000,60000) }
  wall partition thickness 200 { (70000,32000) (70000,60000) }
  wall id=wc_west partition thickness 200 { (76000,32000) (76000,60000) }
  wall partition thickness 200 { (86000,32000) (86000,60000) }
  wall id=wcw_s partition thickness 200 { (76000,42000) (86000,42000) }
  wall id=wcm_s partition thickness 200 { (76000,52000) (86000,52000) }

  # ---- north row ------------------------------------------------------------
  room id=g1 at (0,0) size 26000x26000 label "Gallery 1"
  room id=g2 at (26000,0) size 26000x26000 label "Gallery 2"
  room id=g3 at (52000,0) size 26000x26000 label "Gallery 3"
  room id=store at (78000,0) size 22000x14000 label "Store" uses storage
  room id=office at (78000,14000) size 22000x12000 label "Offices" uses office

  # ---- the spine ------------------------------------------------------------
  room id=spine at (0,26000) size 100000x6000 label "Concourse" uses circulation hall

  # ---- south row ------------------------------------------------------------
  room id=g4 at (0,32000) size 30000x28000 label "Gallery 4"
  room id=hall at (30000,32000) size 18000x28000 label "Entrance Hall" uses entry hall
  room id=g5 at (48000,32000) size 22000x28000 label "Gallery 5"
  room id=link at (70000,32000) size 6000x28000 label "Lobby" uses circulation
  room id=wcw at (76000,32000) size 10000x10000 label "WC Women" uses wc
  room id=wcm at (76000,42000) size 10000x10000 label "WC Men" uses wc
  room id=plant at (76000,52000) size 10000x8000 label "Plant" uses utility
  room id=cafe at (86000,32000) size 14000x28000 label "Cafe" uses dining

  # ---- openings: the public route -------------------------------------------
  # Main entrance (south facade) into the hall, then a wide threshold to the spine.
  door at (39000,60000) width 2000 swing out
  opening at (39000,32000) width 4000

  # Galleries read off the spine through cased openings, not doors.
  opening at (13000,26000) width 3000
  opening at (39000,26000) width 3000
  opening at (65000,26000) width 3000
  opening at (15000,32000) width 3000
  opening at (59000,32000) width 3000
  opening at (73000,32000) width 3000
  opening at (93000,32000) width 4000

  # Service wing: offices off the spine, the store through the offices, and its own
  # exterior service door on the north facade.
  door at (89000,26000) width 1200
  door at (89000,14000) width 1200
  door at (89000,0) width 1200 swing out

  # The WC stack + plant room open off the lobby.
  door at (76000,37000) width 1200
  door at (76000,47000) width 1200
  door at (76000,56000) width 1200

  # ---- glazing --------------------------------------------------------------
  window at (13000,0) width 4000
  window at (39000,0) width 4000
  window at (65000,0) width 4000
  window at (0,13000) width 3000
  window at (0,46000) width 3000
  window at (100000,20000) width 3000
  window at (100000,45000) width 4000
  window at (15000,60000) width 4000
  window at (59000,60000) width 4000

  # ---- structure: gallery column bays ---------------------------------------
  # Four columns per north gallery, on the bay third-points (grid-snapped).
  let BAY = 8700
  for i in 0..3 {
    let x0 = i * 26000
    column at (x0 + BAY, 8700) size 600x600
    column at (x0 + 2 * BAY, 8700) size 600x600
    column at (x0 + BAY, 17400) size 600x600
    column at (x0 + 2 * BAY, 17400) size 600x600
  }
  # The two deep south galleries carry their own bays.
  for i in 0..2 {
    column at (10000 + i * 10000, 41000) size 600x600
    column at (10000 + i * 10000, 51000) size 600x600
    column at (54000 + i * 12000, 41000) size 600x600
    column at (54000 + i * 12000, 51000) size 600x600
  }

  # ---- sanitary fixtures ----------------------------------------------------
  # `against wall <id>` places each piece BY CONSTRUCTION: the offset runs along that
  # wall, the depth comes off its face, the rotation is derived from which side it lands
  # on (`in <room>` picks the side), and a catalogued fixture needs no `size`. So a row
  # of WCs is three offsets — no coordinates, no half-thickness arithmetic, and no
  # fixture can end up floating or facing its own wall.
  furniture wc against wall wcw_s offset 1500 in wcw
  furniture wc against wall wcw_s offset 5000 in wcw
  furniture wc against wall wcw_s offset 8500 in wcw
  furniture basin against wall spine_s offset 79000 in wcw
  furniture basin against wall spine_s offset 83000 in wcw

  furniture wc against wall wcm_s offset 1500 in wcm
  furniture wc against wall wcm_s offset 5000 in wcm
  furniture wc against wall wcm_s offset 8500 in wcm
  furniture basin against wall wcw_s offset 3000 in wcm
  furniture basin against wall wcw_s offset 7000 in wcm

  # ---- cafe fit-out ---------------------------------------------------------
  furniture counter against wall spine_s offset 90000 size 6000x800 label "Servery" in cafe
  furniture table at (89000,45000) size 1600x1600 label "Table" in cafe
  furniture table at (93000,45000) size 1600x1600 label "Table" in cafe

  # ---- reception ------------------------------------------------------------
  furniture desk  at (33000,38000) size 1800x800 label "Reception desk" in hall
  furniture chair at (35200,39200) size 500x500 in hall
  furniture chair at (33000,40500) size 500x500 in hall
  furniture plant at (44000,55000) size 700x700 in hall

  # ---- gallery seating & planting --------------------------------------------
  # One bench and one plant per gallery — sparse-elegant, not empty — kept clear of
  # the bay columns above.
  furniture bench at (19000,20000) size 1800x500 in g1
  furniture plant at (23000,2000)  size 700x700  in g1
  furniture bench at (45000,20000) size 1800x500 in g2
  furniture plant at (49000,2000)  size 700x700  in g2
  furniture bench at (71000,20000) size 1800x500 in g3
  furniture plant at (75000,2000)  size 700x700  in g3
  furniture bench at (24000,50000) size 1800x500 in g4
  furniture plant at (26000,35000) size 700x700  in g4
  furniture bench at (60000,55000) size 1800x500 in g5
  furniture plant at (49000,35000) size 700x700  in g5

  title { project "City Museum" drawn_by "ArchLang" date "2026-07-26" }
}