grabowski
917a3eb933
New docs/crane-workshop-tours.md: a 5 t single-girder EOT crane over the whole production compartment (stops at the warehouse fire wall), a machine door and crane-served workshop/machine bay at the ramp end, and a glazed ground-level visitor corridor along the car-park elevation with stations in process order, its own air and acoustic glazing so tours need no PPE. Covers what each changes in the shell (crane-ready frame, hook height under the 7.0 m eave, no full-height cross walls in the crane zone, room lids and crane hatches), safety, costs and open decisions. Propagated: construction RFQ (crane-ready frame, new section 1c, machine door, accessible 1:12 entrance now required), scale zone table (+210 to 280 m2, total ~1,400 to 2,000 m2), facility security, worker safety, roadmap items 9 and 15, total investment added-scope table, README.
228 lines
14 KiB
Markdown
228 lines
14 KiB
Markdown
# 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 parametric model
|
||
(`docs/cnx_vinyl_parametric.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, **crane-ready: one 5 t EOT crane runway over the production compartment** (see §1c) |
|
||
| Footprint | **60 × 25 m = 1,500 m²** |
|
||
| Roof | Monopitch, **10° pitch**, roof plane **1,523 m²**, low eave **7.0 m**, high side **~11.4 m** (both above finished floor) |
|
||
| 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,d0). **Roof 100 mm PIR** with light-colored top skin, **walls 75 mm PIR**. 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. **See §1a for where mineral-wool core is required instead** |
|
||
| Wall quantities | Masonry/precast dado **170 m perimeter × 2.5 m = 425 m²** (impact, security, washdown), internally insulated so the envelope stays continuous; **sandwich panel above dado ~1,140 m²** |
|
||
| Floor | **200 mm** ground-bearing slab rated **30 kN/m² UDL**, provision for machine plinths, power-floated finish |
|
||
| Finished floor level | **+1.2 m above surrounding ground** — see §1b |
|
||
| 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. **1 machine door** (~4.5 × 5.0 m insulated sectional, fully sealed) at the ramp end, see §1c. Personnel entrances with vestibule; fire exits per code |
|
||
| 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.
|
||
|
||
### 1a. Panel core: where PIR is not enough
|
||
|
||
PIR is specified for the general envelope because it gives the best thermal
|
||
performance per millimetre (λ ≈ 0.022 W/mK, so roughly U 0.28 W/m²K walls
|
||
and 0.21 W/m²K roof), which is what the conditioned interior needs. Two
|
||
places it should **not** be used, and the contractor should price
|
||
**mineral-wool core** panels instead:
|
||
|
||
- **Fire compartmentation.** A panel's reaction-to-fire class is not a fire
|
||
resistance rating. Any wall required to compartment — production hall to
|
||
warehouse, and anything separating the boiler hall — needs rated
|
||
construction achieving **EI 60 or EI 120**, which in panel form means
|
||
mineral wool, not PIR.
|
||
- **Acoustics.** PIR performs poorly for sound, typically **Rw 25–30 dB**;
|
||
it is a stiff closed-cell foam and behaves as a mass-spring-mass system
|
||
with coincidence dips. Presses, compressors, chillers and the boiler are
|
||
all significant sources and the site is agricultural land, so a neighbour
|
||
complaint is a permitting risk. Mineral-wool core reaches roughly
|
||
**Rw 32–40 dB**.
|
||
|
||
Ask the contractor to price the general envelope in PIR and to quote
|
||
mineral-wool core as a **separate rate per m²** for nominated compartment
|
||
and acoustic walls, stating the panel thickness needed to hold the same
|
||
U-value (mineral wool at λ ≈ 0.038 needs roughly 130 mm walls / 180 mm roof
|
||
to match, and is heavier — it may affect purlin and frame sizing).
|
||
|
||
**Open decision:** which elevations are acoustically governed. That depends
|
||
on the neighbour to be identified at the land survey. Until then, price the
|
||
mineral-wool rate but leave the area provisional.
|
||
|
||
### 1b. Raised floor and site fill
|
||
|
||
The dock-height question is now **decided**: the whole building floor is
|
||
raised rather than forming a recessed dock pit. This is a civil works item
|
||
and must be included.
|
||
|
||
| Item | Quantity |
|
||
|---|---|
|
||
| Compacted structural fill under the building platform | **1,711 m³** |
|
||
| Fill build-up | 1.0 m compacted fill + 200 mm slab = **FFL +1.2 m** |
|
||
| Reinforced concrete edge beam to retained faces | **56.1 m³**, ~85 m of retained edge |
|
||
| Battered faces | Two faces battered at **1V:2H** rather than retained (no edge beam) |
|
||
|
||
The loading face and the car-park elevation are retained by the edge beam;
|
||
the other two faces are battered. The dispatch room behind the docks runs as
|
||
a buffer climate zone, separated from the conditioned warehouse by
|
||
interlocked high-speed roll doors.
|
||
|
||
**Access at grade.** With FFL at +1.2 m the building needs its own access,
|
||
now modelled and to be included:
|
||
|
||
| Item | Spec |
|
||
|---|---|
|
||
| Vehicle ramp | **10.5 m run × 4.5 m wide at 1:10**, rising 1,050 mm from yard level to FFL, sited at the far end of the building — opposite the docks, so it does not conflict with dock operations. **~22.9 m³** concrete |
|
||
| Personnel steps | **3 flights**: main entrance on the car-park elevation, plus two fire exits — one at the opposite end of the same elevation, one at the dock end. Each **1.5 m wide, 6 risers at 175 mm, 5 treads at 280 mm, 1.2 m top landing**. **~2.3 m³** each |
|
||
|
||
Two things deliberately not in the model, to be priced anyway: **handrails**
|
||
to both sides of every flight and to the ramp, and **door thresholds**.
|
||
|
||
The ramp is 1:10, which suits forklifts and vans but is **not** an
|
||
accessible gradient. **A step-free visitor entrance is now required**: the
|
||
plant will run public tours through a glazed visitor corridor (see
|
||
[crane, workshop and tours](../crane-workshop-tours.md)). Price a **1:12
|
||
ramp at the main entrance**, about 14.4 m of run for the 1.2 m rise plus
|
||
intermediate landings, with handrails both sides.
|
||
|
||
Exit positions are provisional: they are placed for reasonable escape
|
||
distances on a 60 × 25 m footprint, but final numbers and locations follow
|
||
the fire strategy and the racking layout, neither of which is fixed.
|
||
|
||
### 1c. Overhead crane and machine door
|
||
|
||
The building must carry an overhead crane for moving machines in, out and
|
||
to the maintenance workshop. Background and the reasoning behind each
|
||
figure: [crane, workshop and tours](../crane-workshop-tours.md).
|
||
|
||
| Item | Spec |
|
||
|---|---|
|
||
| Crane | Single-girder EOT, **5 t SWL** (3.2 t as an alternative price), span the full building width (~24 m between rail centres), electric wire-rope hoist with inverter drives, radio remote, light duty class |
|
||
| Runway | Both long walls, over the **production compartment only**: from the ramp-end wall to the production/warehouse fire wall, **~40 to 48 m** (estimate, set by the warehouse depth). Brackets or stepped columns, runway beams, rails, end stops, enclosed conductor rail |
|
||
| Frame | Designed for crane wheel loads and braking forces from day one |
|
||
| Hook height | **State the achievable hook height under the 7.0 m low eave.** Price **+1.0 m on the low eave** as an option |
|
||
| Machine door | ~**4.5 m wide × 5.0 m high** insulated sectional, fully sealed, at the ramp end; the runway reaches its inside face |
|
||
| Machine bay slab | The bay inside the machine door rated for a rigid truck reversing in: **wheel point loads**, not only the 30 kN/m² distributed rating |
|
||
| Ramp | Confirm the 10.5 m × 4.5 m 1:10 ramp and its transitions take a rigid truck reversing up to the machine door |
|
||
|
||
The crane itself may be quoted by a specialist sub; the runway, frame
|
||
premium and machine door belong in the shell price. Inside the crane zone
|
||
no wall may run full height across the building; internal partitions are
|
||
fit-out and are not in this price.
|
||
|
||
## 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, **2.0 m** high block/precast on strip footing (~174 m³) |
|
||
| Main gate | **One** gate only: piers plus **bi-parting sliding leaves, 10.0 m clear opening** (2 × 5 m). The previously mooted second gate is deleted |
|
||
| Paving — heavy duty | **1,608 m²** rigid reinforced concrete for laden trucks: truck apron, dock face, internal circulation road, Phase 2 link |
|
||
| Paving — general | **2,779 m²** lighter hardstanding: car park, yard and margins |
|
||
| **Paving total** | **4,387 m²** — see note below |
|
||
| Car/scooter parking | Roofed canopies: **27.7 × 7.0 m (195 m², 10 cars)** + **13.7 × 5.5 m (76 m², 30 scooters)**, steel canopy carrying **~40 kWp** PV |
|
||
| Guard house | **12 m² (4 × 3 m)**, insulated/AC'd, with toilet; sited at the gate, north-west side |
|
||
| Tank foundations | Ring foundation for a **9 m dia × 4 m** fire water tank (**~250 m³, ~250 t full** — the geometry gives 254 m³ gross; if 200 m³ usable with freeboard is intended, the foundation still carries the full 250 t) sited in the **north-west corner of the plot**, with the **fire pump house adjacent to it**; plus a **5 m dia × 3 m** raw water tank. Tanks themselves are vendor-supplied bolted panels — foundations only |
|
||
| Fire main | Ring main runs from the north-west corner to the buildings — quote the **length**, not just "a ring main" |
|
||
| Drainage & sanitation | Site stormwater drainage, domestic septic/treatment for ~25 staff — **see note below** |
|
||
|
||
**On the paving quantity.** This is a deliberate increase: the site is now
|
||
paved continuously from the road frontage through to the Phase 2 building.
|
||
At 4,387 m² it is roughly 2.5× the 1,500–2,000 m² this sheet previously
|
||
carried, and it becomes one of the larger civil numbers in the package. Two
|
||
things follow:
|
||
|
||
- The two paving classes are quoted separately on purpose. Do **not** price
|
||
the whole 4,387 m² at truck spec.
|
||
- Roughly the last third of the general paving is the Phase 2 approach,
|
||
which will be dug up again for Phase 2 piling and foundations. **Option to
|
||
price:** compacted sub-base only now, surfaced after Phase 2 completes.
|
||
|
||
**On drainage.** 4,387 m² of pavement is about 46 % of the 9,567 m² plot,
|
||
but the figure that matters for attenuation is the **total sealed area**:
|
||
adding the main building (1,500 m²), utility yard (178 m²), guard house
|
||
(12 m²) and parking canopies (271 m²) gives **6,348 m², or 66 % of the
|
||
plot**. Quote the contractor that number, not the paving one.
|
||
Runoff increases materially over the agricultural baseline, and
|
||
stormwater attenuation — quite possibly a detention pond — may be required
|
||
for the factory permit. Ask the contractor to state what they have assumed.
|
||
|
||
## 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, and it now applies to 4,387 m² of
|
||
pavement and a 1,711 m³ fill platform as well as the building.
|
||
- **Tank proximity to the building**: the fire water tank sits about 4.5 m
|
||
from the main building. Full, it is ~250 t on a 9 m ring foundation. On
|
||
soft ground, ask whether they price a deeper tank foundation, ground
|
||
improvement, or want the tank moved further off.
|
||
- **Panel core**: PIR general with mineral wool at compartment and acoustic
|
||
walls (§1a) — separate rate per m², and any frame implications.
|
||
- **Sprinklers**: OH2 sprinkler system, ring main, and hydrants are planned
|
||
but not designed (see [facility security](../facility-security.md)). 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.
|
||
- **Crane**: achievable hook height at the 7.0 m eave, the frame premium
|
||
for crane loads, and whether they supply the crane or price a
|
||
specialist sub (§1c).
|
||
- **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
|
||
- Separate rates for **heavy-duty** and **general** paving
|
||
- A separate rate for **mineral-wool core** panel
|
||
- The **crane package** separately: runway and frame premium, machine
|
||
door, the crane itself, and the hook height they achieve
|
||
- A lump figure for the rest of the site works
|
||
- The foundation/geotech assumption behind all of it
|
||
|
||
That is enough to sanity-check against the ~24–42M THB Thai-sourced
|
||
utilities baseline in the [utilities CSV](utilities-investment.csv);
|
||
building construction is currently an unpriced line in
|
||
[scale](../scale.md).
|