{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.guard-stone","code":"thing-q1649815","url":"https://ver.cy/models/thing/q1649815/","name":"guard stone","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.BLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A stone or post set at the corner of a building, gateway or wall, or at the edge of a road or bridge, to protect the structure from damage by the wheels and hubs of passing vehicles, common from Roman times through the age of horse-drawn traffic and often surviving as heritage features, sometimes decorated or made from reused cannon; guard stones are related to bollards and to kerb and wheel guards in modern traffic design.","purpose":"Let an agent explain guard stones and their function, relay history, forms and surviving examples from heritage and architectural sources, describe their modern equivalents, and distinguish guard stones from bollards, boundary stones and milestones.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Corner or edge placement","Deflects wheels","Historic survival","Sometimes decorative"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What a guard stone is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is a guard stone, and how does it differ from a bollard, boundary stone and milestone?","kind":"definition"},{"text":"Is the question about guard stones, bollards or another marker?","kind":"boundary"}]}]},{"id":"forms","name":"Forms","description":"Forms.","findings":[{"id":"forms-finding","name":"Forms","description":"Forms.","questions":[{"text":"What forms do guard stones take, from plain stones to carved and cannon posts?","kind":"definition"},{"text":"Which entry fits the specific form?","kind":"action"}]}]}]},{"id":"history","name":"History","description":"History.","layers":[{"id":"origins","name":"Origins","description":"Origins.","findings":[{"id":"origins-finding","name":"Origins","description":"Origins.","questions":[{"text":"How did guard stones develop from Roman roads through the horse-drawn era?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"examples","name":"Examples","description":"Surviving examples.","findings":[{"id":"examples-finding","name":"Examples","description":"Examples.","questions":[{"text":"Where do notable guard stones survive, and how are they documented?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"today","name":"Today","description":"Today.","layers":[{"id":"heritage","name":"Heritage","description":"Heritage.","findings":[{"id":"heritage-finding","name":"Heritage","description":"Heritage.","questions":[{"text":"How are guard stones protected and recorded as heritage features?","kind":"provenance"},{"text":"Which entry fits street furniture heritage?","kind":"action"}]}]},{"id":"modern","name":"Modern","description":"Modern equivalents.","findings":[{"id":"modern-finding","name":"Modern","description":"Modern.","questions":[{"text":"What modern wheel guards and corner protectors serve the same purpose?","kind":"provenance"},{"text":"Which entry fits bollard?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Context.","layers":[{"id":"names","name":"Names","description":"Names.","findings":[{"id":"names-finding","name":"Names","description":"Names.","questions":[{"text":"What are guard stones called in different languages and regions?","kind":"provenance"},{"text":"Which entry fits street furniture?","kind":"action"}]}]},{"id":"culture","name":"Culture","description":"Culture.","findings":[{"id":"culture-finding","name":"Culture","description":"Culture.","questions":[{"text":"How do guard stones feature in local lore and urban photography?","kind":"provenance"},{"text":"Which entry fits vernacular architecture?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe guard stones and their purpose, citing heritage sources.","Report damage to a guard stone to the owner or heritage authority."],"mustNot":["Remove or damage a historic guard stone.","Steer a vehicle into a guard stone or building corner.","Present local legends about guard stones as history."],"requiresHuman":["Removing or relocating a guard stone, especially a listed one."]},"ethics":{"considerations":["Guard stones are small heritage features easily lost in road works.","They mark the history of streets and traffic."],"affectedParties":["Local communities","Heritage visitors"]},"owners":{"steward":"The owner of the building or road; heritage authorities protect listed ones.","roles":[],"masterSystems":["National heritage registers"]},"relations":[{"target":"Q19603939","type":"parent","note":"registry parent class"},{"target":"Q2180428","type":"parent","note":"registry parent class"},{"target":"building component","type":"related","note":"in registry terms"},{"target":"pole","type":"related","note":"in registry terms"},{"target":"gate","type":"related","note":"and corners from vehicles"},{"target":"bollard","type":"related","note":"which controls traffic"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.guard-stone","Wikidata: Q1649815 (https://www.wikidata.org/wiki/Q1649815)"]},"properties":{"applicability":"required","items":["typical height: about 0.5-1 m","period: Roman to 19th century range - horse-drawn traffic","materials: stone, cast iron, reused cannon list"]},"recognition":{"applicability":"required","items":["Corner-protecting stone or post","Guard stones at gateways, corners, bridges and roadsides, cannon reused as guards","Bollards control traffic; boundary stones mark limits; milestones mark distance","A short sloping or rounded stone or post at a corner or gateway."]},"capabilities":{"applicability":"required","items":["explain function and forms","relay history and examples","describe modern equivalents","distinguish related stones"]},"hazards":{"applicability":"required","items":["Loss during road widening and redevelopment","Confusing with bollards and boundary stones","Trip hazards in modern settings"]},"interfaces":{"applicability":"required","items":["Heritage protection for historic guard stones","Modern traffic design standards for kerbs and wheel guards"]},"context":{"applicability":"required","items":["Protecting corners and edges from vehicle damage.","gateway guard stones","corner guard stones on buildings","bridge and roadside guard stones","cannon guard posts","decorated and carved guard stones","modern wheel guards and corner protectors"]}},"sources":[{"title":"Wikidata item Q1649815: guard stone","url":"https://www.wikidata.org/wiki/Q1649815","note":"identity and sense of the item"},{"title":"Wikipedia: Guard stone","url":"https://en.wikipedia.org/wiki/Guard_stone","note":"general description of the item"}],"openQuestions":["Should bollard be linked as a primary entry?","How should heritage sources be linked?","How should regional names be recorded?"],"resources":{"spec":"/models/things/publications/thing-q1649815/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1649815/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T05:51:18Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:54+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}