{ "verification_date": "2026-09-16", "version": "1.2.0", "sources": [ { "source_id": "S1", "publisher": "Steel Door Institute", "title": "Specifications for Standard Steel Doors and Frames (SDI-100)", "url": "https://steeldoor.org/ansi-250-8/", "edition_or_date": "ANSI/SDI A250.8-2023", "locator": "Sections 1.4, 2.1–2.4; Tables 2–4; Appendices A–C", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S2", "publisher": "Steel Door Institute", "title": "Manufacturing Tolerances for Standard Steel Doors & Frames", "url": "https://steeldoor.org/sdi-117/", "edition_or_date": "SDI 117-26", "locator": "Sections 1, 3.2, 4.1–4.2, 6.2–6.5", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S3", "publisher": "Steel Door Institute", "title": "Recommended Selection and Usage Guide for Standard Steel Doors", "url": "https://steeldoor.org/sdi-108/", "edition_or_date": "SDI 108-23", "locator": "Table 1 and notes", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S4", "publisher": "Steel Door Institute", "title": "Test Procedure and Acceptance Criteria for Physical Endurance for Steel Doors, Frames and Frame Anchors", "url": "https://steeldoor.org/ansi-250-4/", "edition_or_date": "ANSI/SDI A250.4-2026", "locator": "Sections 2.2, 5.1, 7.1", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S5", "publisher": "DASMA", "title": "Technical Data Sheet 154: DASMA Metal Gauge Chart", "url": "https://www.dasma.com/wp-content/uploads/2020/06/TDS154-DASMA-Metal-Gauge-Chart.pdf", "edition_or_date": "10/9/03; revised 12/10; reaffirmed 09/17", "locator": "Steel table, PDF page 2; introduction and references", "verification_method": "Issuer PDF text plus table screenshot", "verified": "2026-09-16" }, { "source_id": "S6", "publisher": "DASMA / Karl A. Hermann", "title": "The Gauge Controversy Explained", "url": "https://www.dasma.com/the-gauge-controversy-explained/", "edition_or_date": "Door & Access Systems, Winter 2008, p. 56", "locator": "Historical 24-gauge G40 tolerance example", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S7", "publisher": "NAAMM / Hollow Metal Manufacturers Association", "title": "Guide Specifications for Commercial Hollow Metal Doors and Frames", "url": "https://naamm.org/wp-content/uploads/2026/06/hmma_861_14_non_ansi.pdf", "edition_or_date": "NAAMM HMMA 861-14; seventh edition, September 15, 2014", "locator": "Sections 1.04, 1.05.A.2, 2.01.B, 2.03.B; foreword", "verification_method": "Issuer-hosted PDF parsed text read directly; page-image renderer unavailable", "verified": "2026-09-16" }, { "source_id": "S8", "publisher": "NAAMM", "title": "HMMA Publications catalogue", "url": "https://naamm.org/divisions/hmma/publications/", "edition_or_date": "Catalogue checked September 16, 2026", "locator": "Listings and issuer download links for HMMA 803-08 and HMMA 861-14", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S9", "publisher": "Clopay Building Products", "title": "Steel Gauge vs. Decimal Thickness of Steel", "url": "https://cdn.clopay.com/public/documents/steel%20gauge%20vs.pdf", "edition_or_date": "Undated", "locator": "24-gauge worked example; 41.82 lb/ft²/in and 669.12 oz/ft²/in reference constants", "verification_method": "Manufacturer PDF text and page 1 screenshot", "verified": "2026-09-16" }, { "source_id": "S10", "publisher": "Steel Source", "title": "Gage Table / Tabla de Calibres", "url": "https://steelsource.us/gage-tabletabla-de-calibres/", "edition_or_date": "Undated", "locator": "Galvanized table; Hot Rolled/P&O/Cold Rolled nominal and lower ordering-limit columns; weight formula", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S11", "publisher": "National Institute of Standards and Technology", "title": "SI Units – Length", "url": "https://www.nist.gov/pml/owm/si-units-length", "edition_or_date": "Page updated September 19, 2025", "locator": "FAQ: exact inch-to-millimeter conversion", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S12", "publisher": "Wisconsin Department of Safety and Professional Services", "title": "Commercial Buildings", "url": "https://dsps.wi.gov/pages/Programs/CommercialBuildings/Default.aspx", "edition_or_date": "Live program notice checked September 16, 2026", "locator": "2021 ICC adoption September 1, 2025; November 1, 2025 plan-compliance date", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S13", "publisher": "Wisconsin Department of Safety and Professional Services", "title": "SPS 361 insert pages for the 2021 IBC", "url": "https://dsps.wi.gov/Documents/Programs/CommercialBuildings/SPS361Insert.pdf", "edition_or_date": "September 1, 2025", "locator": "Heading and SPS 361.03(14)", "verification_method": "Issuer PDF text and page 2 screenshot", "verified": "2026-09-16" }, { "source_id": "S14", "publisher": "Overhead Door", "title": "Rolling Steel Service Doors – Advanced, model 611", "url": "https://www.overheaddoor.com/commercial/commercial-details/rolling-steel-service-doors-611", "edition_or_date": "Undated live product page", "locator": "Curtain specifications and curved-profile options", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S15", "publisher": "Conspectus", "title": "What thickness is that gage?", "url": "https://www.conspectusinc.com/blog/2012/07/what_thickness_is_that_gage", "edition_or_date": "July 9, 2012", "locator": "Prior published comparison of HMMA and SDI; not used as thickness data", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S16", "publisher": "NAAMM / Hollow Metal Manufacturers Association", "title": "Steel Tables", "url": "https://naamm.org/wp-content/uploads/2026/07/20hmma_803-08.pdf", "edition_or_date": "HMMA 803-08 (2008)", "locator": "Minimum uncoated-steel thickness table and source/metric notes", "verification_method": "Issuer PDF text plus table screenshot", "verified": "2026-09-16" }, { "source_id": "S17", "publisher": "U.S. Government Publishing Office / U.S. Code", "title": "15 U.S.C. §206, Standard gauge for sheet and plate iron and steel", "url": "https://www.govinfo.gov/link/uscode/15/206", "edition_or_date": "Act of March 3, 1893, as reproduced in the linked U.S. Code extract", "locator": "Weight per square foot in ounces avoirdupois, gauges 3–30; NOT its thickness column", "verification_method": "Official PDF text plus table screenshot", "verified": "2026-09-16" }, { "source_id": "S18", "publisher": "UL Solutions", "title": "Doors, Windows and Related Hardware Application Guide", "url": "https://www.ul.com/thecodeauthority/knowledge/ul-fire-rated-doors-guide", "edition_or_date": "Undated live guide", "locator": "Fire-door certification, installation and application", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S19", "publisher": "Overhead Door", "title": "Insulated Rolling Service Doors, model 626", "url": "https://www.overheaddoor.com/commercial/commercial-details/rolling-steel-service-doors-626", "edition_or_date": "Undated live product page", "locator": "Flat-profile F-265i front and back slat options", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" }, { "source_id": "S20", "publisher": "UL Solutions", "title": "UL Fire Door Inspection and Field Evaluation Programs: What Are the Differences?", "url": "https://www.ul.com/resources/ul-fire-door-inspection-and-field-evaluation-programs-what-are-differences", "edition_or_date": "Undated live explanation", "locator": "Inspection versus field evaluation of modified labelled assemblies", "verification_method": "Issuer/publisher HTML read directly", "verified": "2026-09-16" } ], "steel_source_galvanized": { "8": "0.168", "9": "0.153", "10": "0.138", "11": "0.123", "12": "0.108", "13": "0.093", "14": "0.079", "15": "0.071", "16": "0.064", "17": "0.058", "18": "0.052", "19": "0.046", "20": "0.040", "21": "0.037", "22": "0.034", "23": "0.031", "24": "0.028", "25": "0.025", "26": "0.022", "27": "0.020", "28": "0.019", "29": "0.017", "30": "0.016" }, "steel_source_nominal": { "3": "0.239", "4": "0.224", "5": "0.209", "6": "0.194", "7": "0.179", "8": "0.164", "9": "0.150", "10": "0.135", "11": "0.120", "12": "0.105", "13": "0.090", "14": "0.075", "15": "0.067", "16": "0.060", "17": "0.054", "18": "0.048", "19": "0.042", "20": "0.036", "21": "0.033", "22": "0.030", "23": "0.027", "24": "0.024", "25": "0.021", "26": "0.018", "27": "0.016", "28": "0.015" }, "steel_source_lower_ordering_limit": { "3": "0.2281", "4": "0.2162", "5": "0.2012", "6": "0.1863", "7": "0.1723", "8": "0.1574", "9": "0.1425", "10": "0.1285", "11": "0.1136", "12": "0.0986", "13": "0.0847", "14": "0.0697", "15": "0.0623", "16": "0.0548", "17": "0.0498", "18": "0.0438", "19": "0.0378", "20": "0.0329", "21": "0.0299", "22": "0.0269", "23": "0.0239", "24": "0.0209", "25": "0.0179", "26": "0.0159", "27": "0.0144", "28": "0.0129" }, "dasma_bare_min": { "8": "0.1584", "10": "0.1285", "11": "0.1136", "12": "0.0986", "13": "0.0847", "14": "0.0697", "15": "0.0623", "16": "0.0548", "17": "0.0498", "18": "0.0438", "19": "0.0388", "20": "0.0329", "21": "0.0299", "22": "0.0269", "23": "0.0239", "24": "0.0209", "25": "0.0179", "26": "0.0159", "27": "0.0144", "28": "0.0129", "29": "0.0115", "30": "0.0100" }, "sdi_min": { "20": "0.032", "18": "0.042", "16": "0.053", "14": "0.067", "12": "0.093", "10": "0.123", "7": "0.167" }, "hmma_min": { "4": "0.214", "5": "0.199", "6": "0.184", "7": "0.167", "8": "0.152", "10": "0.123", "12": "0.093", "14": "0.067", "16": "0.053", "18": "0.042", "20": "0.032", "22": "0.026", "24": "0.020", "26": "0.016", "28": "0.013" }, "hmma_printed_mm": { "4": "5.43", "5": "5.05", "6": "4.67", "7": "4.24", "8": "3.86", "10": "3.12", "12": "2.36", "14": "1.70", "16": "1.34", "18": "1.06", "20": "0.81", "22": "0.66", "24": "0.50", "26": "0.40", "28": "0.33" }, "sdi_table2_printed_mm": { "20": "0.8", "18": "1.0", "16": "1.3", "14": "1.7" }, "statutory_weight_column_oz_sqft": { "3": 160, "4": 150, "5": 140, "6": 130, "7": 120, "8": 110, "9": 100, "10": 90, "11": 80, "12": 70, "13": 60, "14": 50, "15": 45, "16": 40, "17": 36, "18": 32, "19": 28, "20": 24, "21": 22, "22": 20, "23": 18, "24": 16, "25": 14, "26": 12, "27": 11, "28": 10, "29": 9, "30": 8 }, "clopay_weight_conversion_constant_oz_sqft_per_in": "669.12", "sdi_reference_coating_inches_per_oz_sqft_both_sides": "0.0017", "coating_selection_gauges": [ 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 ], "dasma_coating_reference": { "G-10": { "weight_oz_sqft_both_sides": "0.10", "published_increment_in": "0.0002" }, "G-30": { "weight_oz_sqft_both_sides": "0.30", "published_increment_in": "0.0005" }, "G-40": { "weight_oz_sqft_both_sides": "0.40", "published_increment_in": "0.0007" }, "G-60": { "weight_oz_sqft_both_sides": "0.60", "published_increment_in": "0.0010" }, "G-90": { "weight_oz_sqft_both_sides": "0.90", "published_increment_in": "0.0015" } }, "reference_note": "Transcribed source inputs and clause selections checked September 16, 2026; running the accompanying script does not repeat the external-source verification or advance its date.", "endurance_qualification_inputs": [ { "standard": "ANSI/SDI A250.8-2023 + A250.4-2026", "class_name": "Level 1, performance C", "door_face_min_in": ".032", "frame_min_in": ".042", "cycles_required": "250000", "max_twist_in_at_300lb": "2.5", "max_permanent_deformation_in": ".125", "scope": "Models 1 and 2; representative assembly qualification, not each delivered door", "frame_scope": "A250.8 Table 3", "edition_scope": "Current cited SDI editions; not a claim about editions incorporated in a particular contract" }, { "standard": "ANSI/SDI A250.8-2023 + A250.4-2026", "class_name": "Level 2, performance B", "door_face_min_in": ".042", "frame_min_in": ".053", "cycles_required": "500000", "max_twist_in_at_300lb": "1.25", "max_permanent_deformation_in": ".125", "scope": "Models 1 and 2; representative assembly qualification, not each delivered door", "frame_scope": "A250.8 Table 3", "edition_scope": "Current cited SDI editions; not a claim about editions incorporated in a particular contract" }, { "standard": "ANSI/SDI A250.8-2023 + A250.4-2026", "class_name": "Level 3, performance A", "door_face_min_in": ".053", "frame_min_in": ".053", "cycles_required": "1000000", "max_twist_in_at_300lb": "1.25", "max_permanent_deformation_in": ".125", "scope": "Models 1 and 2; representative assembly qualification, not each delivered door", "frame_scope": "A250.8 Table 3", "edition_scope": "Current cited SDI editions; not a claim about editions incorporated in a particular contract" }, { "standard": "ANSI/SDI A250.8-2023 + A250.4-2026", "class_name": "Level 4, performance A", "door_face_min_in": ".067", "frame_min_in": ".067", "cycles_required": "1000000", "max_twist_in_at_300lb": "1.25", "max_permanent_deformation_in": ".125", "scope": "Models 1 and 2; representative assembly qualification, not each delivered door", "frame_scope": "A250.8 Table 3", "edition_scope": "Current cited SDI editions; not a claim about editions incorporated in a particular contract" }, { "standard": "NAAMM HMMA 861-14", "class_name": ".042-in face-sheet tier", "door_face_min_in": ".042", "frame_min_in": ".053", "cycles_required": "1000000", "max_twist_in_at_300lb": "1.25", "max_permanent_deformation_in": ".125", "scope": "Tier is based on face-sheet thickness, not exclusively interior/exterior location; representative assembly", "frame_scope": ".067 in required for single doors >4 ft wide, pairs with either leaf >4 ft, or nominal opening height >10 ft", "edition_scope": "HMMA 861-14 cites A250.4 under its 2014 reference-edition rule; not asserted identical to A250.4-2026" }, { "standard": "NAAMM HMMA 861-14", "class_name": ".053-in-and-thicker face-sheet tier", "door_face_min_in": ".053", "frame_min_in": ".053", "cycles_required": "4000000", "max_twist_in_at_300lb": ".625", "max_permanent_deformation_in": ".062", "scope": "Tier is based on face-sheet thickness, not exclusively interior/exterior location; representative assembly", "frame_scope": ".067 in required for single doors >4 ft wide, pairs with either leaf >4 ft, or nominal opening height >10 ft", "edition_scope": "HMMA 861-14 cites A250.4 under its 2014 reference-edition rule; not asserted identical to A250.4-2026" } ], "component_clause_inputs": [ { "standard": "NAAMM HMMA 861-14", "component": "Grout guard", "min_thickness_in": "0.016", "clause": "Sec 2.03.B.17", "qualification": "At hardware mortises on frame product to be grouted." }, { "standard": "NAAMM HMMA 861-14", "component": "Vertical door stiffener", "min_thickness_in": "0.026", "clause": "Sec 2.01.B.6", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "NAAMM HMMA 861-14", "component": "Glazing stop or moulding", "min_thickness_in": "0.032", "clause": "Sec 2.01.B.11", "qualification": "Where specified/scheduled; fire-rated door glazing remains subject to the manufacturer’s fire-rating procedure." }, { "standard": "NAAMM HMMA 861-14", "component": "Frame in-fill panel", "min_thickness_in": "0.032", "clause": "Sec 2.03.B.19", "qualification": "Where specified; .032-in steel is laminated to each face of the specified backing, with approved backing for fire-rated frames." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Door end channel or closure, all levels", "min_thickness_in": "0.042", "clause": "Sec 2.3.1.4", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Stile and rail: centre panel", "min_thickness_in": "0.042", "clause": "Sec 2.3.3", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Frame anchor, sheet type", "min_thickness_in": "0.042", "clause": "Sec 2.4.4", "qualification": "Other than slip-on drywall; cited clause also permits .167-in-diameter wire anchors." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Frame base anchor", "min_thickness_in": "0.042", "clause": "Sec 2.4.4.2", "qualification": "Other than slip-on drywall; cited clause provides an additional-jamb-anchor alternative where floor anchoring cannot be used." }, { "standard": "NAAMM HMMA 861-14", "component": "Louver vane, welded V, Y or Z type", "min_thickness_in": "0.042", "clause": "Sec 2.01.B.12", "qualification": "Welded inverted-V, Y or Z louvers for non-fire-protection-rated doors; fire-rated doors require listed louvers." }, { "standard": "NAAMM HMMA 861-14", "component": "Drywall jamb anchor", "min_thickness_in": "0.042", "clause": "Sec 2.03.B.15.c", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Stile and rail: stiles and rails", "min_thickness_in": "0.053", "clause": "Sec 2.3.3", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Pull plate and bar reinforcing", "min_thickness_in": "0.053", "clause": "Table 4", "qualification": "Table 4 note 3 permits omission of reinforcement with the specified through-bolting arrangement." }, { "standard": "NAAMM HMMA 861-14", "component": "Door top and bottom closure channel", "min_thickness_in": "0.053", "clause": "Sec 2.01.B.7", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "NAAMM HMMA 861-14", "component": "Masonry jamb anchor, strap or stirrup", "min_thickness_in": "0.053", "clause": "Sec 2.03.B.15.b", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Mortise or bored lock reinforcing", "min_thickness_in": "0.067", "clause": "Table 4", "qualification": "Table 4 note 1 permits thinner reinforcement with extruded/tapped holes providing equivalent thread engagement." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Surface exit device reinforcing", "min_thickness_in": "0.067", "clause": "Table 4", "qualification": "Table 4 note 3 permits omission of reinforcement with the specified through-bolting arrangement." }, { "standard": "NAAMM HMMA 861-14", "component": "Frame, single door >4 ft wide, pair with either leaf >4 ft, or nominal opening height >10 ft", "min_thickness_in": "0.067", "clause": "Sec 2.03.B.2", "qualification": "Width trigger is the individual door leaf, not the combined width of a pair." }, { "standard": "NAAMM HMMA 861-14", "component": "Other surface-mounted hardware reinforcing", "min_thickness_in": "0.067", "clause": "Sec 2.01.B.10.e", "qualification": "Applies to the component and construction specified in the cited clause." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Mortise hinge reinforcing, 1-3/8 in door", "min_thickness_in": "0.093", "clause": "Table 4", "qualification": "Table 4 note 1 permits thinner reinforcement with extruded/tapped holes providing equivalent thread engagement." }, { "standard": "NAAMM HMMA 861-14", "component": "Head stiffener, masonry opening over 48 in", "min_thickness_in": "0.093", "clause": "Sec 2.03.B.16", "qualification": "Steel angle/channel head stiffener for frame product installed in masonry; not a lintel or load-bearing member." }, { "standard": "NAAMM HMMA 861-14", "component": "Lock front and strike reinforcing", "min_thickness_in": "0.093", "clause": "Sec 2.01.B.10.e", "qualification": "Also permits .053-in unitized reinforcement with extruded/tapped holes providing an equivalent number of threads." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Mortise hinge reinforcing, 1-3/4 in door", "min_thickness_in": "0.123", "clause": "Table 4", "qualification": "Table 4 notes 1–2 permit thinner extruded/tapped reinforcement with equivalent threads, or .093-in angular/channel reinforcement." }, { "standard": "ANSI/SDI A250.8-2023", "component": "Floor checking hinge and pivot reinforcing", "min_thickness_in": "0.167", "clause": "Table 4", "qualification": "Applies to the component and construction specified in the cited clause." } ] }