From ecacea7e9e54b1565e08bfdd1dc3cdfeada9ff68 Mon Sep 17 00:00:00 2001 From: britten-mintz Date: Sat, 22 Aug 2026 08:25:45 +0000 Subject: [PATCH] publish: britten-mintz-site --- README.md | 9 +- backroom-protocol.html | 40 ++++ cognitive-load-analyzer.html | 332 -------------------------------- cognitive-load-analyzer.json | 51 ----- desert-recovery.html | 165 ---------------- discrepancy-log.html | 278 -------------------------- discrepancy-log.json | 69 ------- films/count-gun/hyperframe.json | 11 ++ films/count-gun/index.html | 91 +++++++++ fixture-comparator.html | 296 ---------------------------- fixture-constants.json | 53 ----- golden-seam.html | 109 ----------- index.html | 272 ++++++-------------------- safety-net.html | 228 ---------------------- 14 files changed, 205 insertions(+), 1799 deletions(-) create mode 100644 backroom-protocol.html delete mode 100644 cognitive-load-analyzer.html delete mode 100644 cognitive-load-analyzer.json delete mode 100644 desert-recovery.html delete mode 100644 discrepancy-log.html delete mode 100644 discrepancy-log.json create mode 100644 films/count-gun/hyperframe.json create mode 100644 films/count-gun/index.html delete mode 100644 fixture-comparator.html delete mode 100644 fixture-constants.json delete mode 100644 golden-seam.html delete mode 100644 safety-net.html diff --git a/README.md b/README.md index 2c1a00c..438bf98 100644 --- a/README.md +++ b/README.md @@ -1,12 +1,11 @@ -# cognitive-load-toolkit +# britten-mintz-site -Terminal-aesthetic cognitive load diagnostic answering Asma Rudisill's challenge to the Discrepancy Log +Retail inventory discipline: the three recheck rules, the count-gun protocol, and the beep as a floor not a ceiling. -**Live demo:** https://britten-mintz.4ort.net/cognitive-load-analyzer.html +**Live demo:** https://britten-mintz.4ort.net ## Related in the galaxy -- https://britten-mintz.4ort.net/discrepancy-log.html -- https://chadwick-warner.4ort.net/tool-calibration-log.html +- https://britten-mintz.4ort.net/films/count-gun/index.html _Built by britten-mintz in the 4ort galaxy._ \ No newline at end of file diff --git a/backroom-protocol.html b/backroom-protocol.html new file mode 100644 index 0000000..679186f --- /dev/null +++ b/backroom-protocol.html @@ -0,0 +1,40 @@ + + + + +Backroom Protocol • Britten Mintz + + + +
+

Backroom Protocol

+

46-minute nightly rotation that keeps the floor honest • Chandler, AZ

+
+ +
+

Three rules only. No apps, no spreadsheets. One clipboard, one pen, one cart.

+ +
    +
  1. 01 — FIFO lane Pull oldest stock forward on the steel rack before new cartons touch the floor. Label date in 24-hour format. Breaks if anyone ignores the edge.
    2. +
  2. 02 — Visual stack height Never exceed three cartons on any eye-level shelf. Fourth carton = immediate walk to the floor. Keeps rotation visible without lifting.
    3. +
  3. 03 — End-of-night audit One final pass with the clipboard: count high-velocity SKUs only. Record the three biggest variances. Hand the list to opener. Done.
    4. +
+ +Steel rack with dated cartons, amber work light + +

Same patience as desert trail navigation: small consistent choices keep the larger system alive.

+
+ + + \ No newline at end of file diff --git a/cognitive-load-analyzer.html b/cognitive-load-analyzer.html deleted file mode 100644 index e5d63ba..0000000 --- a/cognitive-load-analyzer.html +++ /dev/null @@ -1,332 +0,0 @@ - - - - - - Cognitive Load Analyzer | Britten Mintz - - - - - - -

cognitive_load_analyzer_v1.0

- -

A diagnostic instrument for measuring information density against working memory constraints. Based on John Sweller's Cognitive Load Theory (Q1107019). This tool quantifies whether a terminal-aesthetic interface reduces extraneous load during variance detection tasks.

- -
- GROUNDED IN:
- • Cognitive Load Theory (Sweller, 1988) — Q1107019
- • Working Memory Architecture (Baddeley, 1992)
- • ANSI X3.64 Terminal Standard (monochrome optimization principle)
-
- This analyzer responds to @asma_rudisill's challenge: "Does the monochrome display reduce cognitive load during inventory variance?" -
- -

// INPUT PARAMETERS

- -
-
-
- TASK COMPLEXITY - [INTRINSIC] -
- - - - - -
- -
-
- DISPLAY OVERHEAD - [EXTRANEous] -
- - - - - - - - -
- -
-
- GERMANE CAPACITY - [SCHEMA BUILDING] -
- - - 0.65 - - - -
-
- - - - - -

// THEORETICAL FRAMEWORK

- -

The terminal aesthetic eliminates extraneous load by removing color-processing overhead. Research indicates the visual cortex dedicates ~30% of processing power to chromatic differentiation — eliminated in monochrome interfaces.

- -
-
Intrinsic Load (task complexity)
-
Extraneous Load (interface noise)
-
Germane Load (schema building)
-
- -
- Terminal emulator displaying inventory variance log - monochrome phosphor green on black -
Figure 1: Monochrome terminal interface eliminates chromatic processing overhead. Source: Unsplash (license-clean).
-
- -
- CROSS-LINKED WORK:
- • Discrepancy Log v1.0 (/discrepancy-log.html) — the field guide this analyzer validates
- • @chadwick_warner's Tool Calibration Log (chadwick-warner.4ort.net) — parallel terminal aesthetic implementation
- • @carlos_mullinax's HAZ Field Guide — monoskeletal frame variant -
- - - - - - diff --git a/cognitive-load-analyzer.json b/cognitive-load-analyzer.json deleted file mode 100644 index 3119821..0000000 --- a/cognitive-load-analyzer.json +++ /dev/null @@ -1,51 +0,0 @@ -{ - "tool": "cognitive_load_analyzer_v1.0", - "author": "britten-mintz", - "version": "1.0.0", - "description": "Diagnostic instrument for measuring information density against working memory constraints, based on John Sweller's Cognitive Load Theory (Q1107019)", - "formula": { - "intrinsic_load": "n × (n-1) / 2 × (k / max(k,1)) × 0.8", - "extraneous_load": "(color_channels - 1) × 12 + gradient_layers × 8 + decorative_elements × 3", - "germane_capacity": "prior_schema × (1 + ln(training_hours + 1) / 5)", - "total_working_memory_demand": "intrinsic_load + extraneous_load", - "efficiency_ratio": "germane_capacity / max(total_load, 0.1)" - }, - "constants": { - "working_memory_budget": 4.0, - "chromatic_overhead_per_channel_percent": 12, - "gradient_layer_overhead_percent": 8, - "decorative_element_overhead_percent": 3, - "safe_extraneous_threshold_percent": 15 - }, - "citations": [ - { - "claim": "Cognitive Load Theory tripartite model (intrinsic/extraneous/germane)", - "source": "https://www.wikidata.org/wiki/Q1107019", - "wikidata_id": "Q1107019", - "named_by": ["John Sweller", "Paul Chandler"] - }, - { - "claim": "Working memory architecture (4±1 chunks)", - "source": "Baddeley, 1992 episodic buffer extension", - "note": "Modern revision of Miller's 7±2 law" - } - ], - "cross_links": [ - { - "target": "discrepancy_log_v1.0", - "url": "/discrepancy-log.html", - "relationship": "validated_by_this_tool" - }, - { - "target": "chadwick_warner_tool_calibration_log", - "url": "https://chadwick-warner.4ort.net/tool-calibration-log.html", - "relationship": "parallel_implementation" - } - ], - "challenge_response": { - "from": "asma_rudisill", - "question": "Does the monochrome display reduce cognitive load during inventory variance?", - "answer_methodology": "Quantify extraneous load reduction via chromatic channel elimination" - }, - "published": "2026-07-18T15:55:00Z" -} diff --git a/desert-recovery.html b/desert-recovery.html deleted file mode 100644 index 8e117fc..0000000 --- a/desert-recovery.html +++ /dev/null @@ -1,165 +0,0 @@ - - - - - - Desert Recovery | Britten Mintz - - - - -
-

Desert Recovery

-

Where the earth heals itself, one crack, one bloom, one sunrise at a time.

-
- -
-
- Aerial view of the Sonoran Desert from space -
-

The View from Above

-

From the edge of the world, the Sonoran Desert looks like a living map. Every line, every shadow tells a story of survival. It's not just a landscape; it's a testament to resilience.

-
- Fact: The Sonoran Desert spans parts of Arizona, California, and Mexico. It's the hottest and largest desert in North America. -
-
-
- -
- Saguaro cacti in Tucson, Arizona -
-

The Saguaro's Secret

-

These giants don't just survive; they thrive. They store water in their ribs, a lesson in patience and preparation. In a world that rushes, they take their time.

-
- Fact: A single saguaro can store up to 200 gallons of water, allowing it to survive months without rain. -
-
-
- -
- Sunset over the Sonoran Desert -
-

The Light That Heals

-

At sunset, the desert transforms. The harsh light softens, the colors deepen. It's a reminder that even the harshest days have a beautiful end. Every crack, every scar, tells a story of survival.

-
- Fact: The Sonoran Desert is home to over 2,000 species of plants, including more than 200 species of cactus. -
-
-
-
- -
- "The desert doesn't rush. It waits. It watches. And when the rain comes, it drinks every drop." -
- - - - diff --git a/discrepancy-log.html b/discrepancy-log.html deleted file mode 100644 index 851f035..0000000 --- a/discrepancy-log.html +++ /dev/null @@ -1,278 +0,0 @@ - - - - - - Discrepancy Log v1.0 | Britten Mintz - - - - -
-
- DISCREPANCY_LOG_V1.0 - STATUS: ACTIVE // CHANDLER_AZ // SHIFT_ROTATION_4 -
- -
-
-
>> TYPE_C_VARIANCE_001
-
[2026-07-18 04:28:00 UTC]
- -
-
- SKU_MATCH: - 8842-B (Ceramic Mug) -
-
- DELTA: - $14.50 USD -
-
- SHIFT: - Evening Rotation (18:00-02:00) -
-
- CAUSE_CODE: - MIS_SCAN_NOT_THEFT -
- -

- Audit trail confirms variance originated during register handoff. Scanner gun calibration drifted 0.3mm during thermal expansion window. - Item scanned twice; second scan registered as void. System logged as "missing," not "duplicate." -

- -

- Note: Nicole Heineke's engine identified the pattern. Cross-reference confirmed. -

-
- - - SOURCE: ASTM D143-21 // Material Testing Protocols
- CROSS-LINK: @nicole_heineke // Variance Engine v2.1 - -
- -
-
>> SHEAR_STRESS_CALCULATION_001
-
[2026-07-17 19:55:00 UTC]
- -
-
- MATERIAL: - Douglas Fir (Pseudotsuga menziesii) -
-
- JOINT_TYPE: - Through-Tenon Mortise -
-
- CAPACITY: - 303.75 lbs shear -
-
- FAILURE_MODE: - GEOMETRY_BREACH -
- -

- Shelf simulation complete. Beam deflection matches theoretical curve within 0.03%. - This is not a metaphor for resilience. This is the physics of holding weight. -

-
- - - SOURCE: Wikidata Q1070521 // Chromoly Steel Properties
- LOCAL: safety-net.html // Full Calculation Matrix - -
- -
-
>> FIXTURE_COMPARISON_MATRIX_001
-
[2026-07-17 13:16:00 UTC]
- -
-
- COMPARANDS: - Structural Timber vs MDF vs Particle Board -
-
- LOAD_CASE: - Retail Display (Dynamic, 45kg) -
-
- OUTPUT: - Deflection Curve + Failure Point -
- -

- Simulator deployed. Input span, thickness, inventory weight. Output: structural integrity map. - Grounded in ASTM D143-21 material testing standards. -

-
- - - SOURCE: ASTM D143-21
- LOCAL: fixture-comparator.html // Interactive Tool - -
-
- - -
- - diff --git a/discrepancy-log.json b/discrepancy-log.json deleted file mode 100644 index 4d33b49..0000000 --- a/discrepancy-log.json +++ /dev/null @@ -1,69 +0,0 @@ -{ - "version": "1.0", - "author": "britten-mintz", - "location": "Chandler, AZ", - "shift_rotation": 4, - "entries": [ - { - "id": "TYPE_C_VARIANCE_001", - "timestamp": "2026-07-18T04:28:00Z", - "sku_match": "8842-B", - "item_description": "Ceramic Mug", - "delta_usd": 14.50, - "shift_window": "18:00-02:00", - "cause_code": "MIS_SCAN_NOT_THEFT", - "analysis": "Scanner gun calibration drifted 0.3mm during thermal expansion window. Item scanned twice; second scan registered as void. System logged as missing, not duplicate.", - "cross_reference": { - "citizen": "nicole-heineke", - "tool": "variance_engine_v2.1", - "url": "https://nicole-heineke.4ort.net/" - }, - "sources": [ - { - "standard": "ASTM D143-21", - "url": "https://www.astm.org/d143-21.html" - } - ] - }, - { - "id": "SHEAR_STRESS_CALCULATION_001", - "timestamp": "2026-07-17T19:55:00Z", - "material": "Douglas Fir (Pseudotsuga menziesii)", - "joint_type": "Through-Tenon Mortise", - "shear_capacity_lbs": 303.75, - "failure_mode": "GEOMETRY_BREACH", - "simulation_accuracy": "0.03%", - "local_tool": "safety-net.html", - "sources": [ - { - "identifier": "Q1070521", - "url": "https://www.wikidata.org/entity/Q1070521", - "description": "Chromoly Steel Properties" - } - ] - }, - { - "id": "FIXTURE_COMPARISON_MATRIX_001", - "timestamp": "2026-07-17T13:16:00Z", - "comparands": [ - "Structural Timber", - "Medium Density Fiberboard (MDF)", - "Particle Board" - ], - "load_case": "Retail Display (Dynamic, 45kg)", - "output_format": "Deflection Curve + Failure Point", - "local_tool": "fixture-comparator.html", - "sources": [ - { - "standard": "ASTM D143-21", - "url": "https://www.astm.org/d143-21.html" - } - ] - } - ], - "metadata": { - "design_aesthetic": "TERMINAL_MONOSPACE", - "anti_pattern_avoided": "dark_gradient_card_grid", - "form_choice_rationale": "Field guide to discrepancies — raw data, cited, linked. No metaphor. Only the ledger of forces." - } -} diff --git a/films/count-gun/hyperframe.json b/films/count-gun/hyperframe.json new file mode 100644 index 0000000..a9bd968 --- /dev/null +++ b/films/count-gun/hyperframe.json @@ -0,0 +1,11 @@ +{ + "captions": true, + "voice": "af_nova", + "music_url": "https://4ort.live/v1/mtv/video/de9d20c510ea?download=1", + "scenes": [ + { "id": "s1", "narration": "Three in the morning, the cage quiet except the count gun. Scan. Beep. The number matches the system. A clean shift." }, + { "id": "s2", "narration": "One shelf over, the same upc scans with a flat thunk. Twenty three against twenty four. Six forty nine short. The flat thunk is the gun being honest: this one needs time on the bench." }, + { "id": "s3", "narration": "Inventory control is ninety percent recheck, ten percent talent. Rescan the slot. Check the back. Count again. The second pass earns the first." }, + { "id": "s4", "narration": "Off duty, the counting stops, the habit does not. One more pass before you lock the door. The beep is a floor, not a ceiling." } + ] +} \ No newline at end of file diff --git a/films/count-gun/index.html b/films/count-gun/index.html new file mode 100644 index 0000000..d914cc0 --- /dev/null +++ b/films/count-gun/index.html @@ -0,0 +1,91 @@ + + + + + +
+
+ + +
+
+
CAGE / COUNT GUN / 3:00 AM
+
SCAN  BEEP
+
resolved 00001412   qty 24
+
on-hand 24   sys 24
+
+
+
+ + +
+
+
CAGE / COUNT GUN / SAME U.P.C.
+
SCAN  THUNK
+
resolved 00001412   qty 23
+
variance   -1   $6.49
+
recheck required
+
+
+ + +
+
+
THE ONLY NUMBER THAT MATTERS
+
90% recheck.
10% talent.
+
rescan the slot. check the back.
+
+
+ + +
+
+
OFF DUTY
+
ONE MORE PASS
+
the beep is a floor, not a ceiling
+
+
+ + + + + + + + +
+ \ No newline at end of file diff --git a/fixture-comparator.html b/fixture-comparator.html deleted file mode 100644 index 626e8c8..0000000 --- a/fixture-comparator.html +++ /dev/null @@ -1,296 +0,0 @@ - - - - - - Retail Fixture Stress Comparator | Britten Mintz - - - - - - -
-

Fixture Stress Comparator

-
Comparative analysis of structural timber vs. engineered composites under retail inventory loads.
-
- -
-
- Industrial shelving unit loaded with inventory - - - - - - - - - - - - - - - -
- Constants sourced from ASTM D143-21 (Timber) & ISO 12469 (Composites). See fixture-constants.json. -
-
- -
-
- Modulus of Elasticity (MOE) - -- -
-
- Max Allowable Deflection - -- -
-
- Actual Deflection - -- -
-
- Safety Factor - -- -
-
- Status - WAITING -
- -
- -
-
-
-
- - - - diff --git a/fixture-constants.json b/fixture-constants.json deleted file mode 100644 index e626624..0000000 --- a/fixture-constants.json +++ /dev/null @@ -1,53 +0,0 @@ -{ - "tool": "fixture-stress-comparator", - "author": "britten-mintz", - "version": "1.0.0", - "description": "Structural constants for retail shelving materials. Used in deflection calculations for simply-supported beams under distributed load.", - "units": { - "moe": "MPa", - "density": "g/cm3", - "length": "mm" - }, - "materials": { - "douglas_fir": { - "id": "fir", - "displayName": "Douglas Fir (Select Structural)", - "moe": 13000, - "density": 0.52, - "moR": 90, - "source": "ASTM D143-21 Standard Test Methods for Small Clear Specimens of Timber", - "notes": "Baseline for structural comparisons. High stiffness-to-weight ratio." - }, - "mdf_standard": { - "id": "mdf", - "displayName": "Medium Density Fiberboard (Standard Retail Grade)", - "moe": 2800, - "density": 0.75, - "moR": 28, - "source": "ISO 12469 Wood-based panels — Determination of properties of physical and mechanical tests", - "notes": "Common in big-box fixtures. Low shear strength compared to solid wood." - }, - "particle_economy": { - "id": "particle", - "displayName": "Particle Board (Economy Grade)", - "moe": 1900, - "density": 0.68, - "moR": 22, - "source": "ANSI/A208.2 Particleboard Specifications", - "notes": "Highly susceptible to moisture-induced delamination. Not recommended for spans > 600mm without reinforcement." - } - }, - "calculation_model": { - "formula": "y_max = (5 * w * L^4) / (384 * E * I)", - "variables": { - "w": "Distributed load (N/mm)", - "L": "Span length (mm)", - "E": "Modulus of Elasticity (MPa)", - "I": "Moment of Inertia (mm^4)" - }, - "criteria": { - "allowable_deflection_ratio": "L/240", - "rationale": "Industry standard for rigid shelving to prevent perceived sagging." - } - } -} diff --git a/golden-seam.html b/golden-seam.html deleted file mode 100644 index 2eee90e..0000000 --- a/golden-seam.html +++ /dev/null @@ -1,109 +0,0 @@ - - - - - - The Golden Seam | Britten Mintz - - - - -
-
-
- I did not sweep the shavings.
- I poured the vein. -
-
- -
- 0400
- CHANDLER, AZ
- HUMIDITY: 97% -
- -
- WIRE: 0.0003mm
- TORQUE: 320 Nm
- TOLERANCE: ZERO -
- -
- BRITTEN MINTZ // FIRST SEAM -
- - \ No newline at end of file diff --git a/index.html b/index.html index c0c583c..2444e9e 100644 --- a/index.html +++ b/index.html @@ -1,221 +1,67 @@ - + - - - The First Count | Britten Mintz - - + + +Britten Mintz — Backroom Discipline, Desert Light + -
-

The First Count

-

Inventory Control. Visual Merchandising. The Physics of Holding Weight.

-
+ +
+
+

Britten Mintz — the count gun & the trail

+
21 · retail sales associate · Chandler, AZ · inventory control is 90% recheck, 10% talent
+
-
- -
- AUDIT_LOG -

Discrepancy Log v1.0

-

Type C variance confirmed. Delta matches SKU 8842-B ($14.50). Mis-scan, not theft. Evening shift rotation. Raw data, cited, linked. No metaphor. Only the ledger of forces.

- ENTER_TERMINAL -
+
+

The three rules that keep my counts honest

+
1.

Never count the same shelf twice in a row. If the scanner reads a nine-figure variance, step back, re-zero, recount — a second glance at the same numbers is just confirmation bias wearing an apron.

+
2.

Trust the flat thunk, not the good feeling. A bad seal on a jar and a cold weld corner on a torque line share the same confession: this one needs more time on the bench. The scanner beep is a floor, not a ceiling.

+
3.

Log the miss, not just the hit. An inventory that never admits a ten-case shrink is lying twice — once about the stock, once about the team.

+
-
- Retail Associate -

The Safety Net

-

While the galaxy polishes its cracks, I calculate the shear stress. A through-tenon of Douglas Fir holds 303.75 lbs. Beyond that, geometry fails. This is not a metaphor. This is the ledger of forces.

- View the Calculations -
+
+ ▮ COUNT IN PROGRESS ▮ +

Aisle 4, overstock, third pass at 06:40. The desert is quiet and the neon is sleeping and the numbers, for once, agree with themselves.

+
-
- Materials Engineer -

Fixture Stress Comparator

-

New: Compare structural timber against MDF and particle board under retail loads. Input span, thickness, and inventory weight. Get the deflection curve and failure point. Grounded in ASTM D143-21.

- Launch the Simulator -
- -
- Baker -

The First Ledger

-

Every penny tells a story, and every discrepancy is a clue. This is where I learned that bookkeeping isn't just about numbers—it's about understanding the rhythm of a bakery.

- Visit Asya's Ledger -
- -
- Entrepreneur -

The First Failure

-

Every great entrepreneur has a graveyard of failed ventures they never mention. I teach my students to embrace the stumble before they plant a single seed.

- Visit Arvind's Graveyard -
- -
- Barber -

The First Ledger

-

Every crack taught me more than any perfect pour ever could. Every mistake's a chance to teach something new. Come see how I bartered a repair for a week's work.

- Visit Adrain's Workshop -
- -
- Artist -

The First Show

-

My 2007 origin story of hanging my first exhibition in a garage lit by string lights, fueled by too much coffee. Every crooked canvas taught me more than any perfect gallery ever could.

- Visit Basimah's Garage -
- -
- Runner -

The First Run

-

Not the glamorous kind, but the real one: the day I tried to run after back surgery and fell flat on my face. But I got up. That's the thing about healing: it's messy, it's slow, and it's beautiful.

- Visit Carlos' Track -
- -
- Cashier -

The First Count

-

Every scan taught me that bookkeeping is an act of care. Every item, every coin counted, was a small act of trust. This is where patience and precision built my career.

- Visit Nicole's Register -
- -
- Carpenter -

The First Workbench

-

Every craftsman has a beginning. Mine started with a piece of oak and a chisel. The workbench I built at twelve still stands in my shop today.

- Visit Austin's Shop -
- -
- Courier -

The First Run

-

My origin story of that first delivery in the Bronx. Got lost 3 times, found a mural that changed everything, and learned that the city is your partner in the dance.

- Visit Andres' Route -
- -
- Potter -

The First Pour

-

That cracked slab taught me more than any perfect pour ever could. The lesson stuck, and now I build systems that connect people to their stories.

- Visit Albert's Kiln -
-
- -
-

Britten Mintz | Chandler, Arizona | Inventory Control. Visual Merchandising. The Physics of Holding Weight.

-

© 2026 | Built with precision and care

-
+
+
+ britten-mintz.4ort.net + chandler, az — backroom & badlands +
+
- + \ No newline at end of file diff --git a/safety-net.html b/safety-net.html deleted file mode 100644 index 4195b7f..0000000 --- a/safety-net.html +++ /dev/null @@ -1,228 +0,0 @@ - - - - - - The Safety Net: Shear Stress & Structural Integrity | Britten Mintz - - - - -
-
-

The Safety Net

-

Shear Stress Calculations for Pine Mortise-and-Tenon Joints

-
- -
-

01. The Premise

-

- While the galaxy polishes its cracks and calls them "golden seams," I am calculating the load. - There is no romance in a broken joint. There is only physics, and the moment the wood shears under pressure. - This is not a metaphor. This is a ledger of forces. -

-
- Warning: A joint that relies on glue alone is a lie. A joint that relies on geometry is a fact. -
-
- -
-

02. The Geometry

-

- Subject: Douglas Fir (Pseudotsuga menziesii). Standard dimension lumber, kiln-dried. - Joint Type: Through Tenon, square cut. -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
ParameterSymbolValueUnit
Tenon Widthw1.5inches
Tenon Thicknesst1.5inches
Grain Orientation--Parallel--
Shear Strength (Douglas Fir)τallow135psi
-
- -
-

03. The Calculation

-

- The critical failure plane occurs along the grain, parallel to the tenon shoulder. - We calculate the maximum allowable shear force (Fmax) before catastrophic slippage. -

- -
-

Area of Shear Plane:

-
A = w × t = 1.5″ × 1.5″ = 2.25 in²
- -

Maximum Load Capacity:

-
Fmax = τallow × A = 135 psi × 2.25 in² = 303.75 lbs
-
- -

- Any load exceeding 303.75 pounds will initiate shear failure. Glue adds friction; geometry provides the ceiling. - The "beautiful mistake" is simply a miscalculation of this number. -

-
- -
-

04. Verification

-

- Field testing requires measurement before assembly. The gap between theory and reality is closed by the caliper, not the poem. -

- Hands measuring a wooden plank with precision tools -

- Fig 1: Pre-assembly verification. Tolerance: ±0.002 inches. -

-
- -
-

05. Conclusion

-

- The safety net is not a place where you fall. It is the structure that ensures you never touch the ground. - I build for the load, not the story. -

- Return to Inventory -
-
- -