Packhouse Spec — Hawaii Farming, Lalamilo

1. Spec

Item Packhouse Fert Room and Storage
Footprint 100 × 80 ft, 8,000 ft² 100 × 80 ft, 8,000 ft²
Heights Eave 14 ft, ridge about 17 ft 4 in (1:12 roof) Eave 15 ft, ridge about 18 ft 4 in (1:12 roof)
Light panels No Yes, 12.5 to 14.5 ft
Slab – 4,000 psi– Pack room slopes to its trench drain at 1/8 in per ft (1%) – 8,000 lb forklift wheel loads– Courtyard between buildings, 8,000 lb, sloping north/south to a centre drain that falls east
Parking – North wall: 5 stalls flush against the packhouse– 20 stalls, one row (180 × 42 ft with its aisle), east property line
Septic 100 × 15 ft between the packhouse and the Lettuce Grow
Floor finish Epoxy
Drains – Pack room: trench drain– Bin wash Trench drain along the front of the fertigator, forklift grade
Ventilation None – Fert room: one exhaust fan high in the gable end, a low intake vent– Storage: roof vents only, no fans
Insulation See open questions See open questions
Water Potable for sanitation; hot water for bin wash Fill tanks. Ag water only
Fitout – 6 × 6 ft block of lockers– Eyewash station near the bathrooms– Manual leveller and dock shelter. Thomas: can we get angled prefab shelters?– All doors auto– Japanese/English shrinkwrap and labeller– 5 Keiki tables– Box erector– Pallet wrapper– 2 desks– Bin wash awning, open, 70 × 30 ft off the south wall – Dry storage pallet racking (two high on the floor plus one shelf)– Manual dock levellers, no shelters– All doors auto– Exhaust fan centred high in the fert room's gable end

2. Open questions

3. Electrical schedule

Load Building Where Est. kW Basis
Cooler refrigeration Packhouse Cold storage 12 Mini-splits on CoolBot Pros, held at 55 °F. kW is a placeholder until the HVAC sizing
HVAC Packhouse Pack room, box store, break room 18 Mini-splits, held at 70 °F. kW is a placeholder until the HVAC sizing
Packing machine (J/E) Packhouse Pack room 10 Wrapper, packers and rotary table; vendor to confirm
Box erector Packhouse Box store 3
Air compressor Packhouse Box store 7.5 10 hp, for the box erector and packing machine
Pallet wrapper Packhouse Pack room, by the cooler door 1.5 Turntable wrapper
Scale/checkweigher Packhouse End of the packing machine 0.5
Bin washer and water heater Packhouse Bin wash 25 7.5 kW of pumps and drive plus an 18 kW electric heater; about 7.5 kW if the hot water is propane
Water heater, break room appliances Packhouse Break room, bathrooms 6 4.5 kW water heater, fridge and microwave
Roll-up operators, 3 Packhouse R1, R2, R3 2.2 1 hp each
Lighting Packhouse All rooms 5 LED at 0.6 W/ft² over 8,000 ft²
Reefer plugs, 3 Packhouse Truck court, by D1/D2 30 240 V 3-phase, ours; about 10 kW each holding a 40 ft reefer at 50 °F, about 27 A running
Forklift charging Packhouse Box store 6 48 V charger; eyewash if lead-acid
General receptacles Packhouse All rooms 3 Desks, tools
Fertigator and irrigation pumps Fert Fert room 15 Placeholder: two 10 hp pumps; count and hp TBD
Exhaust fan Fert F1, fert room gable end 0.75 36 in, 1 hp; storage has roof vents only
Roll-up operator Fert R1 0.75 1 hp
Lighting Fert All rooms 4 LED at 0.5 W/ft²; less by day under the light panels
General receptacles Fert All rooms 3

Estimated service

Building Est. kW Amps at 240 V 3-phase Panel
Packhouse 130 347 600 A
Fert Room and Storage 24.25 65 100 A
Both, one service 154 412 600 A, 240 V 3-phase

Sources

Source Where Est. kW Basis
Backup generator Outdoors by the service 80 Standby, automatic transfer switch on the critical loads: cooler refrigeration (12 kW), the three reefer plugs (30 kW), fertigator and irrigation pumps (15 kW), some lighting and controls (about 8 kW). About 65 kW running, 80 kW to start the motors. Diesel or propane
Solar, with batteries TBD TBD Get a quote, check grants; location TBD

4. Door and window schedule

Doors

Door Building Type Size (W × H) Where Notes
D1 Packhouse Dock 8 × 9 ft East wall, into cold storage Insulated, angled 22°, manual leveller, dock shelter; 40 ft containers out. Auto
D2 Packhouse Dock 8 × 9 ft East wall, into cold storage As D1
R1 Packhouse Roll-up 10 × 10 ft North wall, into the pack room Harvest box trucks in. Auto
R2 Packhouse Roll-up 10 × 10 ft North wall, into cold storage Box trucks out. Insulated. Auto
R3 Packhouse Roll-up 8 × 10 ft South wall, pack room, east end Forklift only: boxes from the fert building
P3 Packhouse Personnel 3 × 7 ft South wall, pack room Onto the bin wash
P4 Packhouse Personnel 3 × 7 ft North wall, west end, break room Staff entry
I1 Packhouse Cooler door 8 × 9 ft Pack room to cold storage, by the wrapper Insulated high-speed door. Not yet marked on the drawings
I2 Packhouse Glass door 4 × 7 ft Break room to pack room
I3–I5 Packhouse Interior, 3 3 × 7 ft Break room to the cleaning store and both bathrooms
D1 Fert Dock 8 × 9 ft East wall, south part, into dry storage Manual leveller, dock shelter; 45 ft containers. Auto
D2 Fert Dock 8 × 9 ft East wall, north part, into dry storage Box truck. Manual leveller, dock shelter. Auto
R1 Fert Roll-up 8 × 10 ft North wall, fert room Forklift only: boxes out to the packhouse's R3
P1 Fert Personnel 3 × 7 ft South wall, east end, dry storage Egress
P3 Fert Personnel 3 × 7 ft North wall, fert room, beside R1 Swings out, panic bar
I1 Fert Interior opening 8 × 10 ft Partition, dry storage to fert room Forklift route

Windows

Window Building Size (W × H) Where Notes
— Packhouse 14 × 3.5 ft Break room to pack room, sill 3.5 ft Interior glazing
— Packhouse 11 × 3.5 ft Break room to pack room, sill 3.5 ft Interior glazing
— Fert Band, 2 ft high All four walls, 12.5 to 14.5 ft Translucent light panels