Building Systems

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  1. Structural Function of Floor Systems
    • Transfer gravity loads to vertical structure
    • from decking or sheathing to joists and beams which frame into columns and bearing walls
    • loads transfer directly from slabs and plates into columns and beams
    • Transfer lateral loads to shear walls
    • floor system acts as diaphragm
  2. Structural Steel Floor Systems
    • Structural steel sections - such as wide flanges - are assembled into a skeleton frame, typically rectangular
    • Connection types: welded, riveted and bolted, moment sher and semi-rigid
  3. Structural Steel Types: One-way beam system
    Beams framed from column to column
  4. Structural Steel Types: two-way beam system
    Girders framed from column to column, beams frame into girders
  5. Structural Steel Types: Triple beam system
    Plate girders or truss framed from column to column, primary beams frame into girders, secondary beams frame into primary beams
  6. Open-Web Steel Joist
    • Joists are fabricated with a trussed web
    • Lighter weight than structural steel
    • Typical bears on structural steel and/or bearing walls
  7. Open-Web Steel Joist
    Image Upload
  8. Metal Decking
    Corrugated sheet steel designed to span from joist to joist or beam to beam, concrete poured on top
  9. Metal Decking
    Image Upload
  10. Form Decking
    Serves as a form for a cast-in-place reinforced concrete slab
  11. Composite Decking
    Serves as tensile reinforcement for the concrete slab
  12. Cellular decking
    Fabricated with raceways for wiring
  13. Light Gauge Joist Framing
    • Joists manufactured by cold-forming sheet steel
    • Typically bears on bearing walls and foundation walls
    • Image Upload
  14. Wood Joists
    • Solid wood joists ranging from 2x6's to 2x12's and prefabricated I-joists are spaced 12-24 inches on center
    • Framing is similar to light-gauge joist framingImage Upload
  15. Wood subflooring
    consists of panels (sheets) of plywood, oriented strand board (OSB) or high density particle board, ranging in thickness from 1/2" 1-1/2".Image Upload
  16. Engineered Lumber
    • Commonly used instead of solid lumber due to lower cost and longer span limits
    • Types:
    • I-joists (TJI)
    • Glue-laminated timber
    • Parallel strand lumber (PSL)
    • Laminated veneer lumber (LVL)
    • Trusses
  17. Plank-and-Beam Framing
    • Plank flooring with a minimum thickness of 2" is supported by heavy wood beams spaced 4-8'
    • Structure is typically left exposed to view
Card Set:
Building Systems
2011-09-29 03:08:10
Floor Systems

Building Systems
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