Point 18.797678 N, 99.038272 E, queried on the DPT land-use plan map:
Chiang Mai comprehensive city plan in force from 25 May 2026, zone
ย.7-1, very high density residential. The zone prohibits every factory
under the Factory Act except the types in the plan's annex, and
prohibits warehouse and silo businesses.
Annex for this zone: type 107 (CD production, whose definition names
gramophone records and recorded tapes) is not permitted here, only in
the low density residential, special industrial, agricultural land
reform and rural and agricultural zones; type 72 (sound recording,
record players, gramophone records) only for modification or repair;
plastics products and metal plating are not on the list. A record
pressing plant cannot get a factory licence at that point.
Caveats recorded: point, not parcel; DPT data is preliminary, the
provincial office confirms; the pharmaceutical neighbour may be in
another zone or type. Since type 107 is permitted in the plan's low
density residential and rural zones, other Payap land is worth checking
before the lead is dropped.
- docs/land-listings/payap/: source record (zone rules, annex rows,
the 51 types permitted in the zone) and the Thai panel text.
- site-candidates.md: plot point, zoning row, status, the result with
caveats, check 1 marked failed for this point.
- README: project status line, layout line for land-listings/.
User, October 2026: add the guard house and the gate; the truck apron is
far too big.
Model (changed live in FreeCAD 26.3):
- main gate as in the phase 1 RFQ: piers and two 5 m sliding leaves (shown
open, parked inside the wall), 10 m clear (gate_width 8 -> 10 m);
- guard house as in the RFQ: 4 x 3 m (guard room 8.4 m2 + WC 3.6 m2),
window wall to the gate, guard desk, on the gate's north-west side;
- boom barrier just inside the gate (cars and trucks both pass it);
- truck paving: the 42 x 101 m apron (~4,240 m2) replaced by an 8 m gate
road (550 m2) and a 32 m deep apron and dock face (1,600 m2) that joins
the east service road; new params apron_depth, road_w.
Docs: site-candidates Access bullet (~2,150 m2 heavy-duty paving against
1,608 m2 in the Mueang Chi RFQ).
User, October 2026: the Duplex sketch is not to scale, check it against
the documents; the fire water tank is too small.
Model (changed live in the open FreeCAD 26.3 document):
- both Duplex cells rebuilt in the sketched arrangement at the documented
sizes: presses 0.95 m square (0.9 m2) turned 45 deg, EX 50 0.5 x 1.0 m
(0.5 m2), EX 35 0.4 x 0.8 m and trimmer 0.6 x 0.6 m (estimates),
operator position marked; 0.6 to 0.8 m between machines;
- fire water: the ~25 m3 yard tank replaced by the facility-security
planning tank, 9 m x 4 m (254 m3 gross, ~200 m3 usable), new params
fw_dia, fw_h, fw_x, fw_y, at the front by the access road, outside the
production yard, on a ring foundation, with a pump house (duty electric,
standby diesel, jockey); the yard process water tank is now the 5 x 3 m
raw water tank of the phase 1 RFQ.
Docs: site-candidates (cell, raw water, fire water bullet),
facility-security (the Payap model draws the tank; 6 m racking and twice
the floor area make ~200 m3 a floor there).
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.
User, October 2026: the office building also houses several showers, a
changing room, toilets and a canteen; the office area itself about
150 m2; the building can be multi-storey.
Model (office rebuilt live in FreeCAD 26.3; factory and site untouched):
- 32 x 15 m on two storeys (off_storey 3.6 m), ~960 m2 of floor, Arch
Stairs plus a lift, first floor slab with the stair and lift void;
- ground floor: reception and lobby (entrance and link door), canteen
~40 seats with kitchen and servery, changing rooms women and men with
4 showers each and lockers, toilets, mastering and cutting (acoustic
lining), listening room, archive;
- first floor: offices 147 m2 (16 desks), training room (Payap
programmes), meeting room, IT and server, toilets, pantry, flexible
room;
- factory staff entry relabelled "PPE, WC" (changing is in the office).
New docs/cnx_vinyl_parametric_payap-office.png with both floor plans.
Docs: site-candidates Payap section (office bullet, staff entry, area
~3,400 m2 footprint / ~3,880 m2 floor), README bullet and layout line.
User, October 2026: the factory is too small and needs room to grow
(possibly ten more Classics), one shared hydraulic and air supply, water
treatment perhaps in a separate building connected to the galvanics lab,
and a fully equipped workshop (maintenance tools, 3D printers, maybe a
lathe and a small CNC mill).
Model (rebuilt live in FreeCAD 26.3, BIM objects, Params-driven,
parametric check plot 135->145 m and factory 112->120 m passed):
- plot 135 m (11.4 rai) with a reserve; factory 112 x 25 m, 16 bays,
82 m visitor corridor, fire wall at 90 m;
- press hall ~870 m2: two Duplex systems (EX 50 + EX 35), the Classic,
ten future Classic positions in two rows on a service trench;
- central hydraulics and compressed-air plant room (~62 m2);
- water treatment building 12 x 10 m behind galvanics: buried duct
(gravity from the +1.2 m floor), covered crossing 6 m clear;
- workshop ~200 m2 with benches, tool cabinets, 3D printers, lathe,
small CNC mill, drill, saw, welding bay, press, washer, measuring table.
Docs: galvanics (water treatment building, proposed), crane doc (workshop
fit-out; lathe and CNC mill not yet priced; corridor now 82 m),
site-candidates Payap section rewritten, README bullet.
A separate FreeCAD 26.3 model (the Mueang Chi model is untouched) sites
the plant on a 110 m square placeholder plot of Payap land, built from
BIM objects (Arch Site, Buildings and Levels, walls, slabs, columns,
beams, a ramp, Spaces with computed areas, Equipment). Every object sits
on an expression-driven base, so the Params sheet drives plot, setbacks,
floor level, building sizes, fire wall line and office gap (checked:
plot 110 to 120 m and factory 84 to 90 m, everything followed).
- Factory 84 x 25 m, production only, in process order along a 54 m
glazed corridor; press hall 465 m2 with the October fleet (two Duplex
systems, each EX 50 + EX 35, and the Classic); crane to the fire wall;
machine door and 12 m ramp at the north-west corner.
- Office building 24 x 15 m, 12 m away on its own slab with a covered
link: reception, offices, meeting/training, mastering and cutting,
listening, IT, archive. Resolves the crane-zone conflict of the old
sketch.
- Utility yard behind the press hall (boiler and chiller flagged for
re-sizing), gate, truck apron, car park, service road.
- site-candidates: new section and plot-fit note; crane doc: conflict
resolved, 54 m corridor; README bullet and layout lines; the old
sketch is labelled as Mueang Chi with the earlier fleet.
Payap also wants to work closely with the project on new student
programmes: audio engineering (mastering, lathe cutting), IT, business
administration and more.
New docs/payap-partnership.md: why it fits (mastering/cutting engineers
are the hardest hires; Payap has music, IT, business, communication arts,
an English-language International College and pharmacy labs; the plant has
a lathe, production data and a real factory application), programme areas
mapped to the docs they draw on, and what it changes: a reason to bring
the cutting room (roadmap item 27) forward, a cutting engineer before the
students, lacquer and stylus cost of teaching, pre-release security for
customer audio, student access and safety, IT work on staging only, the
link to the Payap land, BOI R&D merit. Suggested form: MOU, internships,
short certificate courses first, degree tracks later; what to settle in
writing and questions for the next meeting.
Links from README (bullet, layout), site-candidates, roadmap item 27, the
supplier map's open training item and the BOI open items.
Payap University (Chiang Mai) is interested in leasing land to the
project; a pharmaceutical facility is under construction on the same land.
New docs/site-candidates.md puts the three options side by side (Mueang
Chi lease, Northern Region Industrial Estate, Payap) with the public facts
on Payap (Mae Khao campus on the Chiang Mai-Lampang superhighway, bought
as low-lying land, ~275 acres; Faculty of Pharmacy cosmetics production
facility tendered July 2024; RPAH cannabis/herbal bioreactor centre), why
it is attractive (5 km from the old city, a university partner with music,
pharmacy and labs, production already being built there) and the checks
that could rule it out, in order: zoning for pressing, boiler and later
electroplating; whether the university can lease to a company; the GMP
neighbour's sensitivity to our emissions (argues against biomass steam
there); flooding; plot fit; galvanics consent. Questions for the next
meeting listed. Nothing re-sited: model, RFQ and site code stay on
Mueang Chi until a plot is known.
README (intro, bullet, layout), roadmap item 9 and the lease fork in
project-timeline link to it.
grabowski