grabowski
bbeaed7e87
Site model: two sealed dock positions on the north gable (depressed 12 m pit + 12 m ramp cut into ground and paving), water treatment moved clear of the cooling tower, second car/staff gate on the NE edge with access road to parking, guard house relocated between the gates, perimeter wall rebuilt continuous on its 0.4 m inset line, leftover door recesses filled on both envelopes, loading-apron marking removed. Renders re-exported. Docs: phase 1 contractor pricing request (PEB spec, PIR envelope, dock, site works, exclusions, soil caveats).
5.9 KiB
Phase 1 Construction: Rough Pricing Request
Spec sheet for asking a contractor for a budget-level price on the phase 1
buildings and site works. Quantities come from the massing model
(docs/factory_building_rough.FCStd) sited on the candidate Mueang Chi
parcel; everything here is planning-stage, not construction documents. In
Thailand this scope is typically quoted as a PEB (pre-engineered steel
building) per m² plus civil works, and the sheet is structured that way.
Context to give the contractor up front: the land is not yet purchased and zoning is unverified, so this is a budget number, not a bid.
1. Main production building
| Item | Spec |
|---|---|
| Type | Single-storey steel portal frame (PEB), no mezzanine, no crane |
| Footprint | 60 × 25 m = 1,500 m² |
| Roof | Monopitch, 10° pitch, roof plane ~1,520 m², low eave 7.0 m, high side ~11.4 m |
| Roof load | Carries a rooftop PV array (~425 modules, ~247 kWp): add ~20 kg/m² dead load plus wind uplift on racking; PV mounts on the purlins |
| Envelope | Insulated sandwich panels, walls and roof, PIR core — EPS core excluded (fire and insurability), fire-rated class stated (FM-approved or B-s1). Roof 100 mm PIR with light-colored top skin, walls 75 mm PIR. Masonry/precast dado wall to ~2.5 m with panels above (impact, security, washdown), internally insulated so the envelope stays continuous. Taped/gasketed joints throughout — the building is air-conditioned (20–26 °C, 35–60 % RH) and must be airtight against smoke-season PM2.5. No skylights. Not bare metal sheet with blanket insulation |
| Floor | Ground-bearing slab rated 30 kN/m² UDL, provision for machine plinths, power-floated finish |
| Doors | 2 loading doors (insulated sectional) as sealed dock positions: dock shelters/seals plus dock levelers, so the docked trailer acts as the airlock and doors never open to outside air. Personnel entrances with vestibule; fire exits per code |
| Loading dock | Decide before pricing: dock-height (preferred) vs ground-level. Dock-height means a recessed dock pit or ~1.2 m raised slab at the loading face — a civil-works item the contractor must include. The dispatch room behind the docks runs as a buffer climate zone, separated from the conditioned warehouse by interlocked high-speed roll doors |
| Interior | Shell only — no internal fit-out in this price (clean room, offices etc. priced later) |
On the slab spec: 30 kN/m² (3 t/m²) is the standard industrial warehouse class, not a premium — it is what the presses and pallet racking need, and stepping up from a light-duty slab adds only on the order of 100–200 THB/m². The real cost variable is the ground underneath (see soil, below). A later value-engineering option is to zone the slab — 30 kN/m² under press hall and warehouse only, lighter under offices — but for rough pricing the whole floor is specified at 30 so the number is conservative.
2. Detached utility yard
Simple industrial enclosures beside the main building.
| Building | Area | Height |
|---|---|---|
| Boiler hall | 66 m² | 6.0 m |
| Biomass fuel store | 42 m² | 5.0 m |
| Chiller room | 60 m² | 5.0 m |
| Cooling tower pad (concrete pad only) | 10 m² | — |
The 14 m flue stack comes with the boiler — excluded here. The boiler hall envelope should be non-combustible (mineral-wool panels or masonry), not PIR.
3. Site works
| Item | Quantity |
|---|---|
| Perimeter wall | ~444 m boundary, ~2 m high block/precast, on strip footing |
| Main gate | Piers + sliding leaf, ~8 m clear opening |
| Truck apron + internal circulation road | Heavy-duty concrete paving, roughly 1,500–2,000 m² (rigid pavement for laden trucks) |
| Car/scooter parking | Roofed canopies: 25 × 6 m (10 cars) + 14 × 5 m (~30 scooters), steel canopy carrying ~32 kWp PV |
| Guard house | Small (~12 m²), insulated/AC'd, with toilet |
| Tank foundations | Ring foundations for a 9 m dia × 4 m fire water tank (~200 m³, ~250 t full) and a 5 m dia × 3 m raw water tank, plus a small fire pump house. Tanks themselves are vendor-supplied bolted panels — foundations only |
| Drainage & sanitation | Site stormwater drainage, domestic septic/treatment for ~25 staff |
4. Exclusions
State these so the number is clean: process machinery, PV system, HVAC plant, chiller/boiler/tanks themselves, sprinkler system, internal fit-out, transformer (PEA), and land works beyond normal grading.
5. Questions the contractor will ask
- Soil conditions: unknown — the plot is agricultural land in Mueang Chi, Lamphun, likely soft former paddy. A soil boring test (~30–50k THB) comes before any real number. For rough pricing, ask them to assume soft-to-medium Lamphun valley soil and to state the foundation assumption they price (footings vs driven piles; a piled slab can add several hundred to 1,000+ THB/m²). The soil, not the slab spec, is the main price risk in the whole package.
- Sprinklers: OH2 sprinkler system, ring main, and hydrants are planned but not designed (see facility security). Ask whether they price it or use a specialist sub — quoted separately either way.
- Racking height in the warehouse zone: undecided; drives the fire design, not the shell, but they may ask.
- Permits: ask whether the price includes permit drawings by a licensed engineer for the building permit and Ror.Ngor. 4 factory license — rough shell prices usually don't.
6. What to ask for back
- THB/m² rough range for the PEB shell at the insulated-panel spec above — not the bare-shed spec
- A lump figure for the site works
- The foundation/geotech assumption behind both
That is enough to sanity-check against the ~24–42M THB Thai-sourced utilities baseline in the utilities CSV; building construction is currently an unpriced line in scale.