{
  "@context": [
    "https://schema.org",
    {
      "ec": "https://entitycodes.org/vocab#"
    }
  ],
  "@type": "DefinedTerm",
  "@id": "https://entitycodes.org/sic/1791/",
  "identifier": "1791",
  "name": "Structural Steel Erection",
  "description": "Standard Industrial Classification (SIC) code 1791: Structural Steel Erection.",
  "url": "https://entitycodes.org/sic/1791/",
  "inDefinedTermSet": {
    "@type": "DefinedTermSet",
    "name": "SIC 1987",
    "url": "https://entitycodes.org/sic/"
  },
  "sameAs": [
    "https://www.osha.gov/data/sic-manual"
  ],
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "SIC division",
      "value": "Division C: Construction"
    },
    {
      "@type": "PropertyValue",
      "name": "SIC major group",
      "value": "Major Group 17: Construction - Special Trade Contractors"
    }
  ],
  "ec:crosswalk": [
    {
      "system": "NAICS 2022",
      "code": "238190",
      "title": "Other Foundation, Structure, and Building Exterior Contractors",
      "confidence": "chain",
      "via": "SIC1987:1791\u2192NAICS1997:23591\u21922002:238190\u21922007:238190\u21922012:238190\u21922017:238190\u21922022:238190",
      "url": "https://entitycodes.org/naics/238190/"
    },
    {
      "system": "NAICS 2022",
      "code": "238310",
      "title": "Drywall and Insulation Contractors",
      "confidence": "chain",
      "via": "SIC1987:1791\u2192NAICS1997:23591\u21922002:238190\u21922007:238190\u21922012:238310\u21922017:238310\u21922022:238310",
      "url": "https://entitycodes.org/naics/238310/"
    },
    {
      "system": "NAICS 2022",
      "code": "238120",
      "title": "Structural Steel and Precast Concrete Contractors",
      "confidence": "chain",
      "via": "SIC1987:1791\u2192NAICS1997:23591\u21922002:238120\u21922007:238120\u21922012:238120\u21922017:238120\u21922022:238120",
      "url": "https://entitycodes.org/naics/238120/"
    },
    {
      "system": "NAICS 2022",
      "code": "238220",
      "title": "Plumbing, Heating, and Air-Conditioning Contractors",
      "confidence": "chain",
      "via": "SIC1987:1791\u2192NAICS1997:23591\u21922002:238220\u21922007:238220\u21922012:238220\u21922017:238220\u21922022:238220",
      "url": "https://entitycodes.org/naics/238220/"
    }
  ],
  "ec:provenance": {
    "definition": {
      "source": "US OSHA 1987 SIC Manual",
      "type": "US gov \u2014 public domain"
    },
    "crosswalk": {
      "source": "Census NAICS\u2194SIC concordance",
      "method": "transitive chain (NOT direct)"
    }
  },
  "license": "https://www.usa.gov/government-works",
  "dateModified": "2026-07-21",
  "isPartOf": {
    "@type": "DefinedTerm",
    "identifier": "Major Group 17: Construction - Special Trade Contractors",
    "name": "SIC Major Group Major Group 17: Construction - Special Trade Contractors",
    "@id": "https://entitycodes.org/sic/group/Major Group 17: Construction - Special Trade Contractors/"
  }
}