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twenty steel construction: welds & light gages nrmc.org Steel - PowerPoint PPT Presentation

Sep 14, 2023 •262 likes •429 views

E LEMENTS OF A RCHITECTURAL S TRUCTURES : F ORM, B EHAVIOR, AND D ESIGN ARCH 614 D R. A NNE N ICHOLS S PRING 2019 lecture twenty steel construction: welds & light gages nrmc.org Steel Welding 1 Elements of Architectural Structures

  1. E LEMENTS OF A RCHITECTURAL S TRUCTURES : F ORM, B EHAVIOR, AND D ESIGN ARCH 614 D R. A NNE N ICHOLS S PRING 2019 lecture twenty steel construction: welds & light gages nrmc.org Steel Welding 1 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  2. Welds • welded steel connections http://courses.civil.ualberta.ca Steel Welding 2 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  3. Welded Connection Design • considerations – shear stress – yielding – rupture Steel Welding 3 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  4. Welded Connection Design • weld terms – butt weld – fillet weld – plug weld – throat • field welding • shop welding (AISC - Steel Structures of the Everyday) Steel Welding 4 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  5. Welded Connection Design • weld process – melting of material – melted filler - electrode – shielding gas / flux – potential defects • weld materials – E60XX – E70XX F EXX = 70 ksi Steel Welding 5 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  6. Welded Connection Design • shear failure assumed • throat – T = 0.707 x weld size • area – A = T x length of weld • weld metal generally stronger than base metal (ex. F y = 50 ksi) Steel Welding 6 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  7. Welded Connection Design • minimum – table • maximum – material thickness ( to ¼”) – 1/16” less • min. length – 4 x size min. – ≥ 1 ½” Steel Welding 7 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  8. Welded Connection Design R • shear    R R R n  u n a   0 . 75   R 0 . 6 F Tl Sl n EXX area – table for  S Steel Welding 8 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  9. Framed Beam Connections • welded example (shear) (AISC - Steel Structures of the Everyday) Steel Welding 9 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  10. Framed Beam Connections • welded moment example (AISC - Steel Structures of the Everyday) Steel Welding 10 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  11. Framed Beam Connections • welded/bolted moment example (AISC - Steel Structures of the Everyday) Steel Welding 11 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  12. Framed Beam Connections • welded/bolted moment example (AISC - Steel Structures of the Everyday) Steel Welding 12 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  13. Light-gage Steel • sheet metal – shaped – studs, panels, window frames – gage • based on weight of http:// nisee.berkeley.edu/godden 41.82 lb/ft 2 / inch of thickness • 24, 22, 18, 16, i.e. • 0.0239, 0.0329, 0.0474, 0.0598 in • 0.6, 0.85, 1.0, 1.3, 1.6 mm Steel Welding 13 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  14. Steel Decks • “Texas” style – corrugated • common – 1 – 3 spans – can be insulated – composite • with concrete Steel Welding 14 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  15. Steel Decks • load tables Steel Welding 15 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

  16. Steel Decks • common fire proofing – cementicious spray – composite concrete • non-composite – concrete is fill • lateral bracing • diaphragm action Steel Welding 16 Elements of Architectural Structures S2019abn Lecture 20 ARCH 614

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