{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.tensile-structure","code":"thing-q145765","url":"https://ver.cy/models/thing/q145765/","name":"tensile structure","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.5","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 structure whose elements carry only tension, with no compression or bending in those elements, such as membrane roofs, cable nets and cable-stayed or suspension systems; tensioned membranes and cables are anchored to masts, arches or edge beams that take the compression.","purpose":"Let an agent describe tensile structures by form, materials and design standards, and point to engineering guidance, without giving structural approvals.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Mechanically prestressed membranes commonly use anticlastic (saddle) curvature; pneumatic membranes use synclastic curvature stabilised by pressure.","Compression is carried by separate masts, arches or rings; form-finding links geometry, prestress and supports.","Prestress gives stiffness, but wrinkling, slackening and stability must be checked under each load combination."],"structure":{"bundles":[{"id":"form","name":"Form","description":"Which structure.","layers":[{"id":"type","name":"Type","description":"Membrane, cable net, tensegrity.","findings":[{"id":"structural-type","name":"Structural type","description":"Type and shape.","questions":[{"text":"What type of tensile structure is it?","kind":"definition"},{"text":"What is its shape?","kind":"definition"}]}]},{"id":"support","name":"Support","description":"Masts, arches, anchors.","findings":[{"id":"support-system","name":"Support system","description":"Compression members.","questions":[{"text":"Which elements carry compression?","kind":"definition"},{"text":"How is it anchored?","kind":"provenance"}]}]}]},{"id":"materials","name":"Materials","description":"What it is made of.","layers":[{"id":"membrane","name":"Membrane","description":"Fabric and coating.","findings":[{"id":"membrane-material","name":"Membrane material","description":"Type and life.","questions":[{"text":"Which membrane material is used?","kind":"provenance"},{"text":"What is its expected life?","kind":"measurement"}]}]},{"id":"cables","name":"Cables","description":"Steel and fittings.","findings":[{"id":"cable","name":"Cable","description":"Type and fittings.","questions":[{"text":"Which cables and fittings are used?","kind":"provenance"},{"text":"How are they protected?","kind":"provenance"}]}]}]},{"id":"design","name":"Design","description":"Standards and loads.","layers":[{"id":"standards","name":"Standards","description":"Applicable codes.","findings":[{"id":"standard","name":"Standard","description":"Code and edition.","questions":[{"text":"Which design standards apply?","kind":"provenance"},{"text":"Which edition?","kind":"provenance"}]}]},{"id":"loads","name":"Loads","description":"Wind, snow, prestress.","findings":[{"id":"load-case","name":"Load case","description":"Loads.","questions":[{"text":"Which loads govern the design?","kind":"provenance"},{"text":"What prestress is set?","kind":"measurement"}]}]}]},{"id":"operation","name":"Operation","description":"Inspection and maintenance.","layers":[{"id":"inspection","name":"Inspection","description":"Checks.","findings":[{"id":"inspection","name":"Inspection","description":"Date and findings.","questions":[{"text":"When was it last inspected?","kind":"provenance"},{"text":"What was found?","kind":"provenance"}]}]},{"id":"maintenance","name":"Maintenance","description":"Retensioning and repair.","findings":[{"id":"maintenance","name":"Maintenance","description":"Works.","questions":[{"text":"Which maintenance was done?","kind":"provenance"},{"text":"Was the membrane retensioned or replaced?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["describe structures and point to standards"],"mustNot":["approve designs or declare structures safe"],"requiresHuman":["design and inspection by qualified engineers"]},"ethics":{"considerations":["public safety"],"affectedParties":["users of buildings"]},"owners":{"steward":"the owner of each structure","roles":[],"masterSystems":["asset records"]},"relations":[{"target":"Q811430","type":"parent","note":"registry parent class"},{"target":"structural system","type":"related","note":"engineering"},{"target":"cable","type":"related","note":"tension element"},{"target":"architectural membrane","type":"related","note":"material"},{"target":"shell structure","type":"related","note":"carries tension, compression and shear"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.tensile-structure","Wikidata: Q145765 (https://www.wikidata.org/wiki/Q145765)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"required","items":["Saddle-shaped or conical membranes","Cables and masts with anchor points","Curved membranes or cable nets stretched between masts, arches and anchors."]},"capabilities":{"applicability":"required","items":["describe forms and materials","explain how loads are carried","point to design standards","describe notable examples"]},"hazards":{"applicability":"required","items":["Loss of prestress and ponding","Tearing of membranes","Cable or anchor failure"]},"interfaces":{"applicability":"required","items":["CEN/TS 19102:2023 design of tensioned membrane structures (Technical Specification)","EN 1993-1-11 design of steel structures with tension components","ASCE/SEI 55-16 tensile membrane structures, including air-supported (US)"]},"context":{"applicability":"required","items":["Roofs, canopies, stadium covers and bridges with long spans and light weight.","mechanically prestressed membrane structures (PTFE-coated glass fibre, PVC-coated polyester, ETFE)","cable nets","air-supported and inflated structures","tensile subsystems of tensegrity structures and cable-supported bridges"]}},"sources":[{"title":"Q145765","url":"https://www.wikidata.org/wiki/Q145765","note":"identity of the registry item, labels and sitelinks"},{"title":"Tensile structure","url":"https://en.wikipedia.org/wiki/Tensile_structure","note":"general description of the subject"},{"title":"Prospect for European Guidance for the Structural Design of Tensile Membrane Structures","url":"https://eurocodes.jrc.ec.europa.eu/sites/default/files/2023-11/JRC132615_01.pdf","note":"Membrane materials, form-finding, prestress, pneumatic curvature and ponding hazards."},{"title":"STN P CEN/TS 19102","url":"https://normy.normoff.gov.sk/norma/138090/?lang=sk","note":"CEN/TS 19102:2023 designation and scope."},{"title":"ASCE 55 - Air Supported Structures and Tensioned Fabric Structures","url":"https://www.asce.org/communities/institutes-and-technical-groups/structural-engineering-institute/committees/sei-board-of-governors/sei-technical-community-executive-committee/asce-55---air-supported-structures---tensioned-fabric-struct","note":"ASCE standards work covering tensile, air-supported, air-inflated and frame-supported membranes."},{"title":"Tensegrity","url":"https://lasr.tamu.edu/research/tensegrity/","note":"Tensegrity combines tensile strings and compressive bars."},{"title":"Lecture 7: Shell Structures","url":"https://fgg-web.fgg.uni-lj.si/~/pmoze/esdep/master/wg08/l0700.htm","note":"Shell membrane action, bending and buckling."},{"title":"Structures: Huff Hall, the Armory, the Irwin Indoor Football Facility, and the State Farm Center","url":"https://iopn.library.illinois.edu/pressbooks/designbuiltenvironment/chapter/structures/","note":"Tensile members in bridges and tents coexist with compression supports."}],"openQuestions":[],"resources":{"spec":"/models/things/publications/thing-q145765/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q145765/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-10-21T20:48:55Z","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":"not-applicable","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 2026-10-21T20:50:30+00:00: completeness 1.00; sense: Wikidata description; 8 live sources; review by codex: pass","interaction.properties":"Structures vary; spans and loads belong to each structure."},"score":1.0}}