99 lines
3.1 KiB
JSON
99 lines
3.1 KiB
JSON
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{
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"title": "Central Valley Field Manual — Machine Constants",
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"author": "Basimah Gomez",
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"location": {
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"ecoregon": "California Central Valley Grasslands",
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"wikidata": "Q104715382",
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"wwf_code": "NA0801",
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"coordinates": {
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"latitude": 37.0,
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"longitude": -120.3,
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"altitude_min_m": 0,
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"altitude_max_m": 400
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},
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"realm": "Nearctic",
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"country": "United States",
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"state": "California"
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},
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"classification_system": {
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"name": "Unified Soil Classification System",
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"wikidata": "Q905795",
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"standards_body": "ASTM International",
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"bartoc_id": "1082"
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},
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"uscs_groups": [
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{
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"symbol": "GW",
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"name": "Well-graded gravel",
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"particle_size_mm": { "min": 4.75, "max": null },
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"thermal_behavior": "rapid_drainage_minimal_retention",
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"garden_application": "foundation_stability_drainage_layers",
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"water_holding_capacity_ml_per_g": 0.08,
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"thermal_conductivity_w_per_mk": 2.1
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},
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{
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"symbol": "SW",
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"name": "Well-graded sand",
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"particle_size_mm": { "min": 0.075, "max": 4.75 },
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"thermal_behavior": "quick_heat_transfer_low_water_holding",
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"garden_application": "root_zone_warming_nightshade_family",
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"water_holding_capacity_ml_per_g": 0.15,
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"thermal_conductivity_w_per_mk": 1.8
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},
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{
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"symbol": "ML",
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"name": "Silt, lean clay",
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"particle_size_mm": { "min": 0.002, "max": 0.075 },
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"thermal_behavior": "moderate_plasticity_moderate_retention",
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"garden_application": "seed_beds_legumes_brassicas",
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"water_holding_capacity_ml_per_g": 0.35,
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"thermal_conductivity_w_per_mk": 1.2
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},
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{
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"symbol": "CH",
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"name": "High-plasticity clay",
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"particle_size_mm": { "min": 0, "max": 0.002 },
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"thermal_behavior": "slow_heating_extreme_water_retention",
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"garden_application": "water_reservoirs_terracing_cores",
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"water_holding_capacity_ml_per_g": 0.65,
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"thermal_conductivity_w_per_mk": 0.9
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},
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{
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"symbol": "GM",
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"name": "Gravel-silt mix",
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"particle_size_mm": { "mixed": true },
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"thermal_behavior": "thermal_buffering_zone",
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"garden_application": "perennial_root_zones_compost_bins",
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"water_holding_capacity_ml_per_g": 0.28,
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"thermal_conductivity_w_per_mk": 1.5
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}
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],
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"hand_test_protocol": {
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"steps": [
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"dry_state_grinding",
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"moist_state_addition_dropwise",
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"ribbon_length_measurement_cm",
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"heat_proximity_cracking_observation"
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],
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"ribbon_thresholds": {
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"sand": "<2cm",
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"silt": "2-5cm",
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"clay": ">5cm"
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}
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},
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"citizen_tools": {
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"feast_calculator_url": "https://basimah-gomez.4ort.net/calculator/",
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"film_render_url": "https://basimah-gomez.4ort.net/films/turmeric-at-dawn/",
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"homepage_url": "https://basimah-gomez.4ort.net/"
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},
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"metadata": {
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"created_utc": "2026-07-18T03:00:00Z",
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"version": "1.0.0",
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"license": "CC0-1.0",
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"citation_urls": {
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"ecoregon_source": "https://4ort.xyz/entity/california-central-valley-grasslands",
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"uscs_source": "https://4ort.xyz/entity/unified-soil-classification-system"
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}
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}
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}
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