{
    "id": "ds021",
    "title": "3D Grid on Reinforced Concrete — Rebar Mesh and Diagonal Electrical Cable",
    "title_fr": "Grille 3D sur béton armé — Ferraillage et câble électrique en diagonale",
    "description": "3D grid acquired on a reinforced concrete slab with a GSSI StructureScan XT 2.7 GHz antenna: 38 profiles over a 1.2 × 0.6 m area. The horizontal time slices reveal the reinforcement mesh and an electrical cable crossing the surveyed area diagonally.\n\nThe diagonal cable is what makes this dataset instructive: on a single 2D profile it produces a hyperbola indistinguishable from a rebar. Only the 3D reconstruction shows that it cuts across the mesh at an angle — the situation that leads to accidental strikes when drilling is planned from 2D scans alone.\n\nRaw unprocessed files, suitable for training on 3D grid interpretation, time-slice reading, and distinguishing embedded services from reinforcement.",
    "description_fr": "Grille 3D acquise sur une dalle en béton armé avec une antenne GSSI StructureScan XT 2,7 GHz : 38 profils sur une zone de 1,2 × 0,6 m. Les coupes horizontales font apparaître le treillis d'armatures et un câble électrique traversant la zone en diagonale.\n\nCe câble en biais fait tout l'intérêt du dataset : sur un profil 2D isolé, il produit une hyperbole impossible à distinguer d'une armature. Seule la reconstruction 3D révèle qu'il recoupe le ferraillage selon un angle — précisément la configuration à l'origine des percements accidentels lorsque le repérage s'appuie sur des profils 2D seuls.\n\nFichiers bruts non traités, adaptés à la formation à l'interprétation de grilles 3D, à la lecture de coupes temporelles et à la distinction entre réseaux noyés et armatures.",
    "applications": [
        "beton",
        "reseaux"
    ],
    "measurementTechnique": "Ground Penetrating Radar",
    "manufacturer": "GSSI",
    "antenna": "StructureScan Mini XT/LXT",
    "frequency_mhz": "2700",
    "format": "DZT",
    "dataType": "raw",
    "fileCount": 38,
    "targets": [
        "rebar mesh",
        "electrical cable",
        "embedded service"
    ],
    "contributor": "MDSLab",
    "datePublished": "2026-08-17",
    "license": "https://creativecommons.org/licenses/by-nc-sa/4.0/",
    "status": "public",
    "channels": 1,
    "gpsAvailable": false,
    "groundTruth": "partial",
    "groundTruthMethod": "Electromagnetic (EM) detection",
    "isAccessibleForFree": true,
    "isAccessibleForPro": false,
    "url": "https://www.gprbase.com/en/dataset/ds021-3d-grid-on-reinforced-concrete-rebar-mesh-and-diagonal/",
    "url_fr": "https://www.gprbase.com/dataset/ds021-grille-3d-sur-beton-arme-ferraillage-et-cable-electrique-en/",
    "publisher": "GPRbase",
    "mirrors": [
        {
            "name": "Hugging Face",
            "url": "https://huggingface.co/datasets/gprbase/ds021-3d-grid-reinforced-concrete"
        }
    ],
    "temporalCoverage": null,
    "citation": {
        "apa": "MDS - Le Matériel de Sondage - GPRbase (2026). 3D Grid on Reinforced Concrete — Rebar Mesh and Diagonal Electrical Cable [Data set]. GPRbase. GSSI, StructureScan Mini XT/LXT, 2700 MHz. https://www.gprbase.com/en/dataset/ds021-3d-grid-on-reinforced-concrete-rebar-mesh-and-diagonal/",
        "bibtex": "@misc{gprbase_ds021,\n  author       = {MDS - Le Matériel de Sondage - GPRbase},\n  title        = {3D Grid on Reinforced Concrete — Rebar Mesh and Diagonal Electrical Cable},\n  year         = {2026},\n  publisher    = {GPRbase},\n  howpublished = {\\url{https://www.gprbase.com/en/dataset/ds021-3d-grid-on-reinforced-concrete-rebar-mesh-and-diagonal/}},\n  note         = {GSSI, StructureScan Mini XT/LXT, 2700 MHz. Licensed under CC BY-NC-SA 4.0},\n}"
    }
}