Payap model v4: colour store, silos, two-storey finishing and print block

User, October 2026: ground-floor colour store plus outdoor silos; a
two-storey block at the east end with packaging below and printing plus
print and packaging stock above; in-house printing not decided, so the
print room is reserved only.

Model (rebuilt live in FreeCAD 26.3 after checking a copy of the saved
file for user edits; parametric check plot 150->160 m and upper floor
3.8->4.2 m passed):
- factory 128 x 25 m, plot 150 m (14.1 rai), corridor 98 m, fire wall
  at 106 m, new params crane_x (runway end = press hall end, 92 m) and
  mezz_z (+3.8 m);
- galvanics open to stamper prep (wall kept only on the material area
  and electrical side);
- colour store 10 m bay (~180 m2): two racking rows, ~100 pallet
  positions on 4 levels (estimate), weighing and mixing, vacuum
  conveying station; indoor silos replaced by regrind bins;
- 4 outdoor PVC silos (2 black, 2 standard colours, ~50 m3 each,
  estimate), big-bag filling station, buried conveying lines;
- finishing and print block 14 x 25 m: ground floor trim, optical
  inspection, QC, packaging (tables, shrink wrap, pallet wrapper), stair
  (Arch Stairs) and goods lift; upper floor print room (reserved), print
  stock, packaging materials.
New docs/cnx_vinyl_parametric_payap-block.png with both block levels.

Docs: site-candidates Payap section rewritten (areas ~3,800 m2 under
roof, ~4,630 m2 of floor), crane doc (98 m corridor, runway ends at the
press hall), README bullet and layout line.

docs/crane-workshop-tours.md

@@ -319,9 +319,13 @@ The Payap scenario model
 resolves that conflict. Mastering and cutting, the offices and IT move
 into a separate office building, so only production sits under the
 crane. The tour then starts in the office building, at the cutting-room
-window and the listening room, and crosses a covered link into an 82 m
+window and the listening room, and crosses a covered link into a 98 m
 corridor. That is longer than the 45 to 55 m assumed below, because the
-press hall keeps room for ten more Classics. The model also draws the
+press hall keeps room for ten more Classics and a colour store sits
+before it. In that model the crane runway ends at the press hall:
+finishing and packaging sit beyond it in a two-storey block with the
+print room and stocks upstairs, which the crane cannot serve, so loads
+there move by forklift and goods lift. The model also draws the
 five-press fleet of October 2026; the sketch above still shows the
 earlier fleet (one Duplex and two Classics).
 

docs/site-candidates.md

@@ -87,8 +87,8 @@ pharmaceutical facility on the offered land is to be confirmed.
    assessment.
 5. **Plot fit.** Shape and size against the 60 × 25 m building, the
    detached utility yard and the phase 2 footprint (6 to 8 rai). The
-   Payap scenario model below needs a 135 m square (11.4 rai) as drawn,
-   with room for ten more Classics and a reserve.
+   Payap scenario model below needs a 150 m square (14.1 rai) as drawn,
+   with room for ten more Classics, a colour store and a reserve.
 6. **Galvanics on a campus.** Phase 5 electroplating needs the lessor's
    written consent; the zero-discharge design
    ([sustainability](sustainability.md)) becomes a lease condition, not
@@ -112,37 +112,66 @@ parametric BIM model sites it on a simple square plot:
 [cnx_vinyl_parametric_payap.FCStd](cnx_vinyl_parametric_payap.FCStd)
 (top view [PNG](cnx_vinyl_parametric_payap.png),
 [isometric](cnx_vinyl_parametric_payap-iso.png)), built in FreeCAD 26.3
-from BIM walls, slabs, columns, spaces and equipment. Every size and
-position hangs off its `Params` spreadsheet (plot side, setbacks, floor
-level, building sizes, fire wall line, office and water treatment gaps),
-so the square can be swapped for the real plot once Payap names one. It
-is a layout sketch: every position and every equipment envelope is an
-estimate.
+from BIM walls, slabs, columns, stairs, spaces and equipment. Every size
+and position hangs off its `Params` spreadsheet (plot side, setbacks,
+floor level, building sizes, fire wall and crane lines, upper floor
+level, office and water treatment gaps), so the square can be swapped for
+the real plot once Payap names one. It is a layout sketch: every position
+and every equipment envelope is an estimate.
 
-- **Plot**: 135 × 135 m (18,225 m², 11.4 rai), road assumed on the south
-  side, 6 m setbacks (placeholder). That is more than the 6 to 8 rai of
-  [scale](scale.md): the factory keeps room for ten more Classics, and the
-  plot keeps a reserve in front for a second hall or a PV field.
-- **Factory, production floor only**: 112 × 25 m at floor level +1.2 m,
-  16 frame bays, in process order along an 82 m glazed visitor corridor.
-  From west to east: staff entry (PPE, WC); workshop and spares, with
-  the machine door and a 12 m vehicle ramp at the north-west corner;
-  galvanics clean room with a chemical day store; stamper prep, PVC lab,
-  material area and the electrical room; the press hall; trim and optical
-  inspection, QC lab, and finishing and packaging. Behind the fire wall at
-  90 m are the warehouse and dispatch with two dock doors.
-  - The press hall (~870 m²) holds two Duplex systems, each two HRP 12
-    presses with an EX 50 and an EX 35, the Classic, and **ten more
-    Classic positions** in two rows
+- **Plot**: 150 × 150 m (22,500 m², 14.1 rai), road assumed on the south
+  side, 6 m setbacks (placeholder). That is about twice the 6 to 8 rai of
+  [scale](scale.md): the factory keeps room for ten more Classics and a
+  colour store, and the plot keeps a reserve in front for a second hall
+  or a PV field.
+- **Factory, production floor only**: 128 × 25 m at floor level +1.2 m,
+  16 frame bays, in process order along a 98 m glazed visitor corridor.
+  From west to east:
+  - staff entry (PPE, WC);
+  - workshop and spares, with the machine door and a 12 m vehicle ramp
+    at the north-west corner;
+  - the galvanics clean room with a chemical day store, open to stamper
+    prep (no wall between them);
+  - PVC lab, regrind and conveying, the electrical room;
+  - the colour store;
+  - the press hall;
+  - the two-storey finishing and print block;
+  - behind the fire wall at 106 m, the warehouse and dispatch with two
+    dock doors.
+
+  Inside it:
+  - **Colour store** (~180 m²): pallet racking for the tens of colours
+    that special designs need, about 100 positions on four levels
+    (estimate), with weighing and mixing and a vacuum conveying station
     ([pressing line](equipment/pressing-line.md)).
+  - **Press hall** (~870 m²): two Duplex systems, each two HRP 12 presses
+    with an EX 50 and an EX 35, the Classic, and ten more Classic
+    positions in two rows.
   - **One shared hydraulic and compressed-air supply**: a central plant
     room (~62 m²) at the west end of the press hall, and a service trench
     along the press rows for the hydraulic ring main, compressed air,
     steam and cooling water.
+  - **Finishing and print block**, 14 × 25 m on two levels, beyond the
+    end of the crane runway
+    ([plans](cnx_vinyl_parametric_payap-block.png)).
+    - Ground floor: trim and optical inspection, the QC lab, and
+      packaging (~170 m²) with packing tables, shrink wrap and a pallet
+      wrapper next to the fire shutter into the warehouse.
+    - Upper floor at +3.8 m: a print room kept in reserve (in-house
+      printing is not decided; jackets come from a print partner today,
+      [production timeline](production-timeline.md)), the print stock
+      (paper, board) and the packaging materials (sleeves, inner bags,
+      mailers, cartons).
+    - A stair and a goods lift connect the floors. Heavy compound stays
+      on the ground floor.
   - The workshop (~200 m²) is fully equipped, with 3D printers, a lathe
     and a small CNC mill among the tools
     ([crane, workshop and tours](crane-workshop-tours.md)).
-  - The 5 t crane runs from the west wall to the fire wall.
+  - The 5 t crane runs from the west wall to the end of the press hall.
+- **PVC silos** (proposed), outside on the north side of the lane:
+  - two for black, two for standard colours, ~50 m³ each (estimate);
+  - a big-bag filling station;
+  - buried conveying lines to the colour store.
 - **Water treatment building**, separate, 12 × 10 m at ground level
   directly behind galvanics: zero-discharge effluent treatment, the DI
   water plant and the chemical store. A buried duct carries the effluent
@@ -182,16 +211,17 @@ estimate.
     dock doors;
   - an access road runs along the south boundary to the car park, with
     a footpath to the office;
-  - a lane behind the factory serves the yard, the water treatment
-    building and the ramp. The low-loader's swept path at the ramp still
-    needs checking.
-- **Area**: about 2,800 m² of factory, 480 m² of office footprint (~960
-  m² on two floors) and 120 m² of water treatment, so ~3,400 m² under roof
-  plus the boiler house, and ~3,880 m² of floor. That is
-  well above the 1,400 to 2,000 m² of the [scale](scale.md) zone table,
-  which held one Duplex and an automated zone with the offices inside.
-  - Two thirds of the difference is the press hall with its expansion
-    floor.
+  - a lane behind the factory serves the yard, the silos, the water
+    treatment building and the ramp. The low-loader's swept path at the
+    ramp still needs checking.
+- **Area**: about 3,200 m² of factory plus a 350 m² upper floor, a 480 m²
+  office footprint (~960 m² on two floors) and 120 m² of water treatment:
+  ~3,800 m² under roof plus the boiler house, and ~4,630 m² of floor.
+  That is about twice the 1,400 to 2,000 m² of the [scale](scale.md) zone
+  table, which held one Duplex and an automated zone with the offices
+  inside.
+  - Most of the difference is the press hall with its expansion floor,
+    the colour store and the finishing and print block.
   - Warehouse and dispatch (~530 m²) are drawn above that table's 300 to
     500 m² for packaging and finished goods.