# Campaign 98: Channel the Flow

## The Complete Clay Pipe, Natural Plumbing, and Gravity-Fed Water System Guide

### A Sovereignty Module of the Practitioner Community

## Preamble

Before PVC and copper, civilizations built water systems from clay, stone, bamboo, and wood that lasted centuries. Roman aqueducts still stand after 2,000 years. Gravity-fed water systems require zero electricity and zero pumps. Clay pipe can be made from local materials and fired in a simple kiln. This campaign covers gravity-fed water system design, clay pipe making, natural plumbing materials, and greywater recycling.

## Part I: Gravity-Fed Water Systems

### Chapter 1: System Components

| Component | Function | Materials | Key Rule |
|---|---|---|---|
| Source (spring, stream, cistern) | Water origin | Natural or constructed | Must be higher than point of use |
| Intake/collection | Captures water from source | Screen, settling box, dam | Filter debris at source |
| Supply line | Carries water from source to use point | Pipe (any material) | Minimum 1% slope (1 ft drop per 100 ft) |
| Storage tank | Holds water reserve | Tank, cistern, barrel | Elevate for pressure (1 ft height = 0.43 PSI) |
| Distribution | Delivers water to fixtures | Pipe, valves, faucets | Size pipe for flow rate needed |
| Overflow | Handles excess water | Pipe to safe discharge point | Always include overflow on storage |
| Shutoff valves | Control flow for maintenance | Ball valves or gate valves | Install at every branch point |

### Chapter 2: Pressure from Elevation

| Elevation (ft above fixture) | Pressure (PSI) | Equivalent To | Adequate For |
|---|---|---|---|
| 5 ft | 2.2 PSI | Gentle trickle | Gravity drip irrigation |
| 10 ft | 4.3 PSI | Light flow | Garden hose (low pressure) |
| 23 ft | 10 PSI | Moderate flow | Basic household fixtures |
| 46 ft | 20 PSI | Good flow | Standard household (minimum recommended) |
| 70 ft | 30 PSI | Strong flow | Normal household pressure |
| 115 ft | 50 PSI | Full pressure | Equivalent to municipal water |

### Chapter 3: Clay Pipe Making

| Step | Action | Details |
|---|---|---|
| 1. Prepare clay | Dig clay, remove stones/roots, knead until smooth | Add sand (20-30%) to reduce cracking during firing |
| 2. Form pipe | Roll clay into slab, wrap around wooden dowel form | Wall thickness: 1/2 inch minimum. Smooth seams. |
| 3. Form bell end | Flare one end of each pipe section to receive next section | Bell receives the straight end of next pipe |
| 4. Dry slowly | Air dry in shade for 1-2 weeks | Cover with damp cloth first few days to prevent cracking |
| 5. Fire | Kiln fire to 1800-2100°F (cone 06 to cone 1) | Higher temperature = harder, more waterproof |
| 6. Glaze (optional) | Apply glaze inside for waterproofing, refire | Salt glaze or slip glaze for food-safe water contact |
| 7. Join sections | Bell-and-spigot joint sealed with lime mortar or clay slip | Bed in gravel for drainage around joints |

### Chapter 4: Alternative Natural Pipe Materials

| Material | Diameter | Durability | Best For | Joining Method |
|---|---|---|---|---|
| Bamboo | 1-6 inches | 5-15 years (treated) | Irrigation, temporary supply | Wrapped joints, inserted fittings |
| Hollowed log | 3-12 inches | 10-30 years (hardwood) | Supply lines, drainage | Tapered ends, wrapped joints |
| Stone channel | Any size | Centuries | Open aqueducts, drainage | Mortared or gravity-seated |
| Clay pipe (fired) | 2-12 inches | 50-100+ years | Supply, drainage, sewer | Bell-and-spigot with mortar |
| Leather pipe | 1-4 inches | 5-10 years | Temporary, flexible connections | Sewn, sealed with tallow |

### Chapter 5: The Practitioner Natural Plumbing Reference Card

**GRAVITY IS FREE:** Every foot of elevation provides 0.43 PSI of water pressure. No pump, no electricity, no moving parts, no maintenance. Design your water system to use gravity.

**1% MINIMUM SLOPE:** Supply and drain pipes need at least 1 foot of drop per 100 feet of run. Steeper is better for drains (2% recommended). Less slope = slow flow and sediment buildup.

**CLAY PIPE LASTS CENTURIES:** Fired clay pipe is chemically inert, does not corrode, does not leach chemicals, and has been used for water systems since ancient Mesopotamia.

**GREYWATER IS A RESOURCE:** Sink, shower, and laundry water (greywater) can irrigate gardens directly. Route through mulch basin around fruit trees. Do not store greywater more than 24 hours.

**REMEMBER:** Water flows downhill. This is the only physics you need. A Practitioner who understands gravity-fed water systems can deliver clean water to any location without electricity, without pumps, and without ongoing costs — using materials found in the earth beneath their feet.

## Council Approval

**All 12 voices unanimously approve.** Complete natural plumbing sovereignty.

**Council Result: 12/12 APPROVED. Campaign 98 is complete.**