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).
98 lines
5.9 KiB
Markdown
98 lines
5.9 KiB
Markdown
# Phase 1 Construction: Rough Pricing Request
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Spec sheet for asking a contractor for a budget-level price on the phase 1
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buildings and site works. Quantities come from the massing model
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(`docs/factory_building_rough.FCStd`) sited on the candidate Mueang Chi
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parcel; everything here is planning-stage, not construction documents. In
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Thailand this scope is typically quoted as a PEB (pre-engineered steel
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building) per m² plus civil works, and the sheet is structured that way.
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Context to give the contractor up front: the land is not yet purchased and
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zoning is unverified, so this is a budget number, not a bid.
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## 1. Main production building
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| Item | Spec |
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|---|---|
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| Type | Single-storey steel portal frame (PEB), no mezzanine, no crane |
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| Footprint | **60 × 25 m = 1,500 m²** |
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| Roof | Monopitch, **10° pitch**, roof plane ~1,520 m², low eave **7.0 m**, high side **~11.4 m** |
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| 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 |
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| 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 |
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| Floor | Ground-bearing slab rated **30 kN/m² UDL**, provision for machine plinths, power-floated finish |
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| 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 |
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| 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 |
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| Interior | **Shell only — no internal fit-out** in this price (clean room, offices etc. priced later) |
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On the slab spec: 30 kN/m² (3 t/m²) is the standard industrial warehouse
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class, not a premium — it is what the presses and pallet racking need, and
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stepping up from a light-duty slab adds only on the order of 100–200 THB/m².
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The real cost variable is the ground underneath (see soil, below). A later
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value-engineering option is to zone the slab — 30 kN/m² under press hall and
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warehouse only, lighter under offices — but for rough pricing the whole
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floor is specified at 30 so the number is conservative.
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## 2. Detached utility yard
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Simple industrial enclosures beside the main building.
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| Building | Area | Height |
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|---|---|---|
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| Boiler hall | 66 m² | 6.0 m |
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| Biomass fuel store | 42 m² | 5.0 m |
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| Chiller room | 60 m² | 5.0 m |
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| Cooling tower pad (concrete pad only) | 10 m² | — |
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The 14 m flue stack comes with the boiler — excluded here. The boiler hall
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envelope should be non-combustible (mineral-wool panels or masonry), not
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PIR.
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## 3. Site works
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| Item | Quantity |
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|---|---|
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| Perimeter wall | **~444 m** boundary, ~2 m high block/precast, on strip footing |
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| Main gate | Piers + sliding leaf, ~8 m clear opening |
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| Truck apron + internal circulation road | Heavy-duty concrete paving, roughly **1,500–2,000 m²** (rigid pavement for laden trucks) |
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| Car/scooter parking | Roofed canopies: **25 × 6 m** (10 cars) + **14 × 5 m** (~30 scooters), steel canopy carrying ~32 kWp PV |
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| Guard house | Small (~12 m²), insulated/AC'd, with toilet |
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| 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 |
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| Drainage & sanitation | Site stormwater drainage, domestic septic/treatment for ~25 staff |
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## 4. Exclusions
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State these so the number is clean: process machinery, PV system, HVAC
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plant, chiller/boiler/tanks themselves, sprinkler system, internal fit-out,
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transformer (PEA), and land works beyond normal grading.
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## 5. Questions the contractor will ask
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- **Soil conditions**: unknown — the plot is agricultural land in Mueang
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Chi, Lamphun, likely soft former paddy. A soil boring test (~30–50k THB)
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comes before any real number. For rough pricing, ask them to assume
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soft-to-medium Lamphun valley soil and to **state the foundation
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assumption they price** (footings vs driven piles; a piled slab can add
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several hundred to 1,000+ THB/m²). The soil, not the slab spec, is the
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main price risk in the whole package.
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- **Sprinklers**: OH2 sprinkler system, ring main, and hydrants are planned
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but not designed (see [facility security](../facility-security.md)). Ask
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whether they price it or use a specialist sub — quoted separately either
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way.
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- **Racking height** in the warehouse zone: undecided; drives the fire
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design, not the shell, but they may ask.
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- **Permits**: ask whether the price includes permit drawings by a licensed
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engineer for the building permit and Ror.Ngor. 4 factory license — rough
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shell prices usually don't.
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## 6. What to ask for back
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- **THB/m² rough range for the PEB shell** at the insulated-panel spec
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above — not the bare-shed spec
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- A lump figure for the site works
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- The foundation/geotech assumption behind both
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That is enough to sanity-check against the ~24–42M THB Thai-sourced
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utilities baseline in the [utilities CSV](utilities-investment.csv);
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building construction is currently an unpriced line in
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[scale](../scale.md).
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