# Seed Hex Floorplan (Single-Story)

**Building Type**: Single-story hexagonal residential building  
**Footprint**: ~10,000 sq ft (120 ft diameter)  
**Max occupancy**: 50 residents (38 pods + commons)  
**Roof height**: 12 ft perimeter, 18 ft center peak  

---

## Structural Design: Central Column + Radiating Trusses

```
                    ╱╲
                  ╱    ╲
                ╱   ●    ╲     ← Central column (commons core)
              ╱   ╱   ╲    ╲
            ╱   ╱       ╲    ╲
          ╱───────●───────●────╲
        ╱       ╱   ╲   ╱   ╲    ╲
      ╱   ●───●───────●───────●   ╲
    ╱    ╱      ╲   ╱   ╲   ╱    ╲  ╲
  ╱────●──────────●───────●─────────●──╲
  ╲    ╲      ╱   ╲   ╱   ╲    ╱    ╱  ╱
    ╲   ●───●───────●───────●───╱   ╱
      ╲       ╲   ╱   ╲   ╱   ╱   ╱
        ╲───────●───────●───────╱
          ╲    ╲   ╱   ╲    ╱  ╱
            ╲   ╲   ╱   ╲   ╱
              ╲  ●─────●  ╱
                ╲   ╱   ╱
                  ╲●╱
```

**Central Hub** (30 ft diameter):
- Commons kitchen
- Dining area
- Playspace/lounge
- Utility core (electrical, water, HVAC)
- Structural column support

**Radiating Trusses**:
- 6 engineered timber trusses extend from central column to each vertex
- Clear span — no internal load-bearing walls
- Pods can be placed anywhere along perimeter
- Roof: 12 ft height at walls, slopes to 18 ft at center

---

## Pod Layout

Pods are arranged along the perimeter walls, leaving the center open for commons and circulation.

### Zone Breakdown

```
                    ╱╲
                  ╱    ╲
            [Zone A - Pods 1-7]
              ╱        ╲
    [Zone F]  ●────────●  [Zone B]
    Pods 29-34 │ COMMONS │  Pods 8-14
              ●────────●
    [Zone E]    ╲    ╱  [Zone C]
    Pods 23-28   ╲  ╱   Pods 15-21
                  ╲╱
              [Zone D - Pods 22-23]
```

---

## Detailed Layout

### Central Commons (30 ft diameter, ~700 sq ft)

```
                    ╱╲
                  ╱    ╲
                ╱  DINING ╲
              ╱   (seats 30)  ╲
            ╱────────────────────╲
          ╱   KITCHEN        LOUNGE  ╲
        ╱   (commercial)    (sofas,    ╲
      ╱                     playspace)   ╲
    ╱───────────────────────────────────────╲
  ╱      LAUNDRY      │ CORE │     BATHROOMS  ╲
 ╱   (2 W/D, lockers) │UTIL. │   (4 shower)   ╲
╱────────────────────────────────────────────────╲
╲                                                ╱
 ╲           ENTRANCE / MUDROOM                 ╱
  ╲                                            ╱
   ╲                                          ╱
    ╲                                        ╱
      ╲                                      ╱
        ╲                                    ╱
          ╲──────────────────────────────────╱
```

**Kitchen**:
- Commercial 8-burner range
- 2 convection ovens
- 3-basin sink (commercial)
- Walk-in cooler (8 x 10 ft)
- Walk-in freezer (6 x 8 ft)
- Dry storage pantry
- Island with prep space (seats 6 for casual meals)

**Dining**:
- 4 large tables (seats 8 each)
- 2 small tables (seats 4 each)
- Total: 40 seats

**Lounge / Playspace**:
- 2 large sofas
- 4 armchairs
- Kids play corner (foam mats, toy storage)
- Media area (projector, screen)
- Book exchange shelf

**Bathrooms**:
- 4 shower stalls (private, ADA accessible)
- 6 toilets (3M, 3F, all private stalls)
- 6 sinks
- Changing bench in each shower room

**Laundry**:
- 2 commercial washers
- 2 commercial dryers
- Folding table
- 50 personal lockers (linen storage)

**Utility Core**:
- Electrical panel (400A service)
- Water heater (commercial, 120 gal)
- HVAC equipment (mini-splits or geothermal)
- Water filtration/treatment
- Fire suppression control

---

## Pod Distribution (38 pods total)

### Zone Assignments

| Zone | Pod Types | Count | Notes |
|------|-----------|-------|-------|
| A | Solo pods | 7 | Quiet zone, faces north |
| B | Solo + Double | 7 | Faces morning sun (east) |
| C | Family pods | 7 | Faces south (best light) |
| D | Care pods | 2 | Ground floor, near bathrooms |
| E | Flex + Double | 6 | Mixed use, faces west |
| F | Solo pods | 7 | Faces northwest |

### Pod Mix

| Type | Count | Sq ft | Total sq ft |
|------|-------|-------|-------------|
| Solo (Type A) | 20 | 150 | 3,000 |
| Double (Type B) | 8 | 200 | 1,600 |
| Family (Type C) | 4 | 300 | 1,200 |
| Care (Type D) | 4 | 280 | 1,120 |
| Flex (Type E) | 2 | 160 | 320 |
| **TOTAL** | **38** | — | **7,240** |

---

## Circulation

### Main Corridor

A 6-ft wide corridor runs the perimeter, connecting all pods to the commons:

```
POD POD POD POD POD POD POD
─────────────────────────── ← 6-ft corridor
                        COMMONS ENTRANCE
POD POD POD POD POD POD POD
```

**Total corridor length**: ~360 linear ft  
**Total circulation area**: ~2,200 sq ft

### Emergency Exits

- 2 main exits from commons (front and back)
- 1 emergency exit per zone (6 total)
- All exits lead to exterior walkway

---

## Roof System

### Structure

- **Central column**: 24" diameter steel or laminated timber
- **Radiating trusses**: Engineered timber, 24" deep
- **Roof deck**: SIPs (structural insulated panels)
- **Covering**: Metal roofing (40-year warranty)
- **Slope**: 6:12 pitch (water/snow shedding)

### Functions

| Roof Area | Function |
|-----------|----------|
| 6,000 sq ft | Solar panels (40-60 kW system) |
| 3,000 sq ft | Rainwater collection (to cisterns) |
| 1,000 sq ft | Greenhouse glazing (optional) |

### Snow Load (Indiana)

- Design for 30 psf snow load
- Trusses sized accordingly
- Metal roof sheds snow efficiently

---

## Mechanical Systems

### Electrical

| Item | Spec |
|------|------|
| Service | 400A, 120/240V single phase |
| Solar | 50 kW array (grid-tied + battery backup) |
| Battery | 40 kWh storage |
| Generator | 30 kW propane backup |

### Water

| Item | Spec |
|------|------|
| Source | Well (300-500 ft depth) + rainwater |
| Storage | 5,000 gal cistern |
| Treatment | Whole-building filtration + UV |
| Hot water | Commercial 120 gal heat pump |

### Wastewater

| Item | Spec |
|------|------|
| Type | Septic system (1,500 gal tank) |
| Drain field | 2,000 sq ft (per county code) |
| Greywater | Diverted to irrigation (optional) |

### Heating/Cooling

**Option A**: Mini-split heat pumps (12-15 units)
- Efficient, zone control
- Easy installation
- ~$25,000 total

**Option B**: Geothermal (horizontal loop)
- Higher upfront ($40,000)
- Lower operating cost
- Better for Indiana climate

---

## Accessibility

- All pods at ground level (no thresholds > ½")
- Corridors 6 ft wide (wheelchair passing)
- 4 ADA-accessible care pods
- All bathrooms ADA compliant
- Ramped entrances (no steps)

---

## Construction Sequence

1. **Foundation**: Slab-on-grade with thickened edges (6 weeks)
2. **Central column + trusses**: Erected as kit (2 weeks)
3. **Roof**: SIPs installed, sealed (1 week)
4. **Exterior walls**: Framed and sheathed (3 weeks)
5. **Windows/doors**: Installed (1 week)
6. **Interior framing**: Pod walls, bathrooms (2 weeks)
7. **MEP rough-in**: Electrical, plumbing, HVAC (3 weeks)
8. **Finishes**: Drywall, flooring, trim (4 weeks)
9. **Pod install**: Prefab units placed (1 week)
10. **Final**: Punch list, CO (2 weeks)

**Total construction time**: 16-20 weeks

---

## Expansion: Adding Hex 002

When population exceeds 40 residents or waitlist > 10:

1. **Select edge**: Choose zone with best solar access or land availability
2. **Clear land**: 0.5 acre adjacent to selected edge
3. **Build foundation**: Share one wall with existing hex
4. **Connect commons**: Doorway between commons areas
5. **Install pods**: 38 new pods + shared bathrooms
6. **Update utilities**: Expand septic, solar, water as needed

**Shared wall becomes**: Community pass-through + emergency exit

---

## Cost Estimate (Single-Story)

| Category | Cost |
|----------|------|
| Foundation (slab) | $45,000 |
| Structure (column + trusses + roof) | $120,000 |
| Exterior envelope | $60,000 |
| Commons build-out | $85,000 |
| Pods (38 units, prefab) | $380,000 |
| MEP systems | $95,000 |
| Solar + battery | $65,000 |
| Site work (well, septic) | $35,000 |
| Permits + fees | $15,000 |
| Contingency (10%) | $90,000 |
| **TOTAL** | **$990,000** |

---

## Advantages of Single-Story

| Factor | Single-Story | Two-Story |
|--------|--------------|-----------|
| Accessibility | ✅ 100% accessible | ⚠️ Stairs required |
| Pod modularity | ✅ Crane in/out | ⚠️ Upper floor harder |
| Construction | ✅ Simpler, faster | ⚠️ More complex |
| Emergency egress | ✅ Ground level | ⚠️ Multiple levels |
| Roof solar | ✅ Full area available | ⚠️ Split between floors |
| Expansion | ✅ Add at any edge | ⚠️ More complex connections |
| Cost per sq ft | ✅ Lower foundation cost | ⚠️ Structural complexity |
| Land efficiency | ⚠️ More land needed | ✅ Smaller footprint |

**Conclusion**: Single-story is the right choice for this pod-based system. Land is cheap in target counties; accessibility and modularity are worth the trade-off.