Sovereignty Module: Raise the Frame

Cover of Raise the Frame
Raise the Frame
Complete Timber Framing: From Standing Tree to Standing Structure
⟁ cover painted for this edition — the source module carried no illustrations

Complete Timber Framing: From Standing Tree to Standing Structure

Timber framing creates buildings that last centuries using only wood and joinery — no nails, no steel. This campaign covers tree selection, layout, joinery, raising, and structural principles.

Chapter 1: Timber Selection and Preparation

SpeciesStrengthWeightRot ResistanceWorkabilityAvailabilityBest Use
White oakVery highHeavyExcellentModerateEastern forestsSills, posts, major beams
Douglas firVery highMediumModerateGoodWestern forestsAll structural
Eastern white pineModerateLightPoorExcellentEastern forestsRafters, purlins, boards
HemlockModerateMediumPoorGoodEastern forestsGeneral framing
Cedar (red)Low-moderateLightExcellentExcellentVariousSills, shingles, siding
Larch/tamarackHighMedium-heavyGoodModerateNorthern forestsSills, ground contact
ChestnutHighMediumExcellentGood(Rare now)All structural

Timber preparation: 1) Fell in winter (less sap, fewer insects, ground frozen for skidding). 2) Hew or saw to square section (broadaxe for hewing, pit saw or sawmill for sawing). 3) Size timbers to plan (standard: posts 8×8, beams 8×10 or 8×12, rafters 6×8). 4) Air dry minimum 6 months per inch of thickness (green timber shrinks and checks). 5) Alternatively: frame green and allow to dry in place (traditional method — joints tighten as wood shrinks). 6) Mark each timber with layout marks (Roman numerals or scribe marks for assembly).

Chapter 2: Layout and Design

ComponentTypical SizeSpan CapacityFunctionJoinery
Sill beam8×8 to 8×10Foundation perimeterBase of frame, sits on foundationMortise and tenon at corners
Posts (corner)8×8N/A (vertical)Carry roof load to foundationTenon into sill, receive beam
Posts (intermediate)6×6 to 8×8N/A (vertical)Support between cornersTenon into sill and plate
Girts (wall beams)6×8 to 8×88-16 ftConnect posts, support floorTenon into posts
Summer beam8×10 to 10×1212-20 ftMain floor supportTenon into girts
Plate (top wall)6×8 to 8×8Wall lengthTop of wall, receives raftersTenon into post tops
Tie beam8×8 to 8×10Building widthPrevents walls from spreadingTenon into plates
Rafters6×6 to 6×8Roof spanSupport roof coveringBirdsmouth at plate, peak joint
Purlins4×6 to 6×8Rafter spacingSupport roof boards between raftersTenon into rafters
Braces4×6 to 6×63-5 ftTriangulate frame (prevent racking)Tenon into post and beam
King post8×8N/ACenter of truss, supports ridgeTenon into tie beam

Chapter 3: Timber Frame Joinery

JointUseStrengthDifficultyToolsPegged?
Mortise and tenonUniversal connectionVery highModerate-highChisel, mallet, augerYes
Housed jointBeam into post (partial)HighModerateChisel, sawSometimes
Scarf jointExtend timber lengthModerate-highHighChisel, sawYes
Lap jointCrossing timbersModerateLow-moderateChisel, sawSometimes
BirdsmouthRafter on plateHighModerateSaw, chiselNo (gravity)
DovetailResist pulling outVery highHighChisel, sawSometimes
Tusk tenonThrough-tenon with wedgeVery highHighChisel, saw, wedgeWedged

Mortise and tenon (timber scale): 1) Tenon: typically 1/3 width of timber, 2/3 depth. 2) Mark tenon with framing square and marking gauge. 3) Cut tenon cheeks with handsaw (tenon saw or frame saw). 4) Cut shoulders cleanly (defines visible joint line). 5) Mortise: mark from tenon (transfer dimensions exactly). 6) Bore out waste with auger (series of overlapping holes). 7) Chop to lines with framing chisel (wide, heavy chisel). 8) Pare walls smooth and square. 9) Test fit (should require mallet to seat — snug, not forced). 10) Drill for peg: offset peg hole in tenon slightly toward shoulder (drawbore — pulls joint tight when pegged).

Chapter 4: Raising the Frame

PhaseCrew SizeEquipmentTimeSafetySequence
Layout (on ground)2-4Tape, square, chalk line1-2 daysLow riskFirst
Cut joinery2-4Chisels, saws, augers1-4 weeksModerateSecond
Pre-assemble bents4-8Mallets, pegs1-2 daysLow riskThird
Raise bents10-20+Pike poles, ropes, gin pole1-2 daysHIGH riskFourth
Connect bents4-8Mallets, pegs, ladders1-2 daysHigh riskFifth
Add braces2-4Mallets, pegs1 dayModerateSixth
Roof structure4-8Ropes, ladders1-2 daysHigh riskSeventh

Raising procedure: 1) Assemble bent (cross-section of frame) flat on ground. 2) Peg all joints in bent. 3) Position bent at foundation edge (bottom will pivot on sill). 4) Attach ropes to top of bent. 5) Crew pushes with pike poles (long poles with metal tips). 6) Other crew pulls ropes from opposite side. 7) Guide bent vertical — do NOT let it go past vertical. 8) Brace immediately with temporary diagonal braces. 9) Repeat for each bent. 10) Connect bents with girts, plates, and tie beams. 11) Add permanent braces. 12) Traditional: entire community helps raise — "barn raising."

Chapter 5: Enclosure and Finishing

SystemInsulationDifficultyCostAppearanceLifespan
Board and battenNone (add separately)LowLowRustic30-50 years
Clapboard sidingNone (add separately)ModerateModerateTraditional40-60 years
Straw bale infillR-30 (excellent)Low-moderateLowPlastered (smooth)50-100 years
SIP panelsR-20-40ModerateHighModern50+ years
Wattle and daubR-3-5 (low)LowVery lowRustic/plastered20-40 years
Brick infillR-4-8Moderate-highModerate-highClassic100+ years

Reference Card

  1. Braces make it rigid (without diagonal braces, a frame racks and collapses — triangulation is structural). 2. Drawbore pulls tight (offset peg hole in tenon pulls joint together — no clamps needed). 3. Layout is everything (measure twice, cut once applies tenfold — a miscut timber is wasted). 4. Green framing is traditional (frame with green wood, joints tighten as wood shrinks around pegs). 5. Sill on stone (wood touching ground rots — always elevate sill beams on stone or concrete foundation). 6. Raise with community (a bent raising requires 10-20 people — this is a community event by necessity). 7. Oak for strength, pine for ease (oak is strongest but hardest to work; pine is easy but weaker — choose wisely). 8. Pegs not nails (wooden pegs flex with the frame; metal fasteners corrode and work loose over centuries).
TransmissionCOMPLETE — unaltered & unabridged
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