Campaign 52: Build in Stone
The Complete Masonry, Concrete, and Earthen Construction Guide
A Sovereignty Module of the Practitioner Community
Preamble
Stone and earth are the oldest building materials on the planet. Every ancient civilization built with them because they are abundant, durable, fireproof, and require no industrial supply chain. A Practitioner who can work with stone, concrete, and earth can build structures that last centuries. This campaign covers concrete mixing, block laying, stone wall construction, earthen building methods (cob, rammed earth, adobe), mortar formulation, and foundation work.
Part I: Concrete Fundamentals
Chapter 1: Concrete Composition
| Component | Proportion | Function |
|---|---|---|
| Portland cement | 1 part | Binder (chemical reaction with water) |
| Sand (fine aggregate) | 2 parts | Fills gaps between gravel, adds workability |
| Gravel (coarse aggregate) | 3 parts | Provides structural strength and bulk |
| Water | 0.5 parts (by weight of cement) | Activates cement (hydration reaction) |
The 1-2-3 rule: 1 cement, 2 sand, 3 gravel. This produces standard structural concrete (~3,000 PSI).
| Mix Type | Ratio (Cement:Sand:Gravel) | Strength | Use |
|---|---|---|---|
| Standard structural | 1:2:3 | 3,000-4,000 PSI | Foundations, walls, slabs |
| High strength | 1:1.5:2.5 | 4,000-5,000 PSI | Columns, load-bearing elements |
| Lean mix | 1:3:6 | 1,500-2,000 PSI | Fill, non-structural pads |
| Mortar (no gravel) | 1:3 (cement:sand) | N/A | Bonding blocks and bricks |
Chapter 2: Concrete Placement
| Step | Action | Key Points |
|---|---|---|
| 1 | Build forms (wood or metal) to contain concrete | Level, plumb, braced. Oil forms for easy removal. |
| 2 | Place rebar or wire mesh for reinforcement | Rebar on chairs (2-3" off ground). Overlap bars 40 diameters. |
| 3 | Mix concrete (mixer, wheelbarrow, or ready-mix truck) | Add water slowly. Too much water = weak concrete. |
| 4 | Pour into forms, work into corners | Do not drop more than 4 feet (causes segregation) |
| 5 | Consolidate (vibrate or tap forms) | Removes air pockets |
| 6 | Screed (level) with straight board | Pull across form tops in sawing motion |
| 7 | Float surface (bull float, then hand float) | Smooths surface. Do not overwork. |
| 8 | Cure: keep moist for 7 days minimum | Cover with plastic or wet burlap. Concrete gains 70% strength in 7 days, full strength at 28 days. |
Chapter 3: Common Concrete Repairs
| Problem | Cause | Fix |
|---|---|---|
| Surface cracks (hairline) | Shrinkage during curing | Fill with concrete crack filler. Cosmetic, not structural. |
| Structural cracks (>1/4") | Settlement, overload, or frost heave | Requires assessment. May need epoxy injection or replacement. |
| Spalling (surface flaking) | Freeze-thaw cycles, deicing salt | Remove loose material, apply bonding agent, patch with polymer-modified concrete |
| Scaling | Poor finishing or curing | Resurface with thin overlay |
| Popouts | Reactive aggregate near surface | Cosmetic. Fill holes with patching compound. |
Part II: Block and Brick
Chapter 4: Concrete Block (CMU) Wall Construction
| Step | Action | Key Points |
|---|---|---|
| 1 | Lay out first course dry (no mortar) to check spacing | Standard block: 8×8×16" (nominal). Actual: 7-5/8×7-5/8×15-5/8" |
| 2 | Mix mortar (1 cement : 3 sand + water + lime for workability) | Consistency of thick peanut butter |
| 3 | Lay mortar bed on footing (1" thick) | Full bed for first course |
| 4 | Set corner blocks first, check level and plumb | Corners are the reference for everything |
| 5 | String line between corners | All blocks between corners align to string |
| 6 | Butter ends of blocks, set in mortar bed | Push down and tap to level. Check with 4' level. |
| 7 | Tool joints when mortar is "thumbprint" firm | Concave joint is strongest and most weather-resistant |
| 8 | Fill cores with grout and rebar at corners, door/window jambs, and every 4 feet | Required for structural walls |
Chapter 5: Brick Patterns (Bonds)
| Pattern | Description | Strength | Use |
|---|---|---|---|
| Running bond | All stretchers (long side out), offset 1/2 brick each course | Good | Most common. Walls, veneers. |
| Stack bond | All stretchers, aligned vertically | Weak (needs reinforcement) | Decorative only |
| English bond | Alternating courses of stretchers and headers | Very strong | Structural walls |
| Flemish bond | Each course alternates stretcher-header | Strong | Decorative structural |
| Herringbone | 45-degree zigzag pattern | Good | Paving, decorative panels |
Part III: Earthen Building
Chapter 6: Earthen Construction Methods
| Method | Materials | Process | Advantages | Limitations |
|---|---|---|---|---|
| Adobe | Clay soil + straw + water | Form bricks, sun-dry 2-4 weeks, lay with mud mortar | Simple, thermal mass, ancient proven method | Needs dry climate or good roof/plaster protection |
| Cob | Clay soil + sand + straw + water | Mix by foot, build walls in lifts (courses), sculpt by hand | No forms needed, sculptural freedom, very strong | Slow (each lift must dry before next). Labor intensive. |
| Rammed earth | Damp soil (clay + sand + gravel) | Compact in forms with tamper, 6" lifts | Extremely strong (1,000+ PSI), beautiful layered appearance | Requires strong forms and significant labor |
| Wattle and daub | Woven sticks + clay/mud plaster | Weave frame, pack with mud mixture | Fast, uses minimal materials | Less durable, needs maintenance |
| Earthbag | Soil in polypropylene bags | Fill bags, tamp, stack with barbed wire between courses | Very strong, flood/earthquake resistant, uses any soil | Labor intensive, needs good plaster protection |
Chapter 7: Mortar and Plaster Formulas
| Type | Recipe | Use |
|---|---|---|
| Standard mortar | 1 Portland cement : 1 lime : 6 sand | Block and brick laying |
| Lime mortar (historic) | 1 lime putty : 3 sand | Historic restoration, breathable walls |
| Earthen mortar | Clay soil + sand + chopped straw | Adobe and cob construction |
| Cement plaster (stucco) | 1 cement : 3 sand (3 coats: scratch, brown, finish) | Exterior weather protection |
| Lime plaster | 1 lime putty : 3 sand | Breathable interior/exterior finish |
| Earthen plaster | Clay + sand + chopped straw + water | Natural finish for earthen walls |
Chapter 8: The Practitioner Masonry Reference Card
CONCRETE: 1 cement : 2 sand : 3 gravel. Add water slowly (less is stronger). Cure 7 days minimum (keep moist).
MORTAR: 1 cement : 3 sand (add lime for workability). Peanut butter consistency. Use within 90 minutes of mixing.
BLOCK WALLS: Corners first, string line between, level every block. Fill cores with grout and rebar at corners and every 4 feet.
EARTHEN BUILDING: Adobe for dry climates. Cob for sculptural freedom. Rammed earth for maximum strength. All need good roofs ("a good hat and good boots" = roof overhang and foundation).
FOUNDATION RULE: Below frost line. On undisturbed soil. Level. Wider than the wall it supports.
REMEMBER: Stone, earth, and concrete are the most durable building materials available to humanity. A well-built stone wall lasts 1,000 years. A well-poured concrete foundation lasts 200. These materials are available everywhere on Earth, require no industrial supply chain to source, and resist fire, rot, and insects. A Practitioner who builds in stone builds for generations.
Council Approval
All 12 voices unanimously approve. The campaign covers concrete fundamentals, placement, repairs, block wall construction, brick patterns, earthen building methods, and mortar formulas. Complete masonry sovereignty.
Council Result: 12/12 APPROVED. Campaign 52 is complete.