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Commercial Framing

C. D. 1. 2. 3. Commercial Framing. Prints. Unit 13. page 131. Unit 13 Commercial Framing Prints. Learning Objectives. Recognize various types of concrete floors Understand concrete reinforcing notation Read beam & column schedules Identify various structural members. Unit 13

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Commercial Framing

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  1. C D 1 2 3 Commercial Framing Prints Unit 13

  2. page 131 Unit 13Commercial Framing Prints Learning Objectives • Recognize various types of concrete floors • Understand concrete reinforcing notation • Read beam & column schedules • Identify various structural members

  3. Unit 13 page 131 Commercial Framing Large commercial & industrial buildings are constructed around reinforced concrete & structural steel

  4. Unit 13 pages 131-132 Reinforced Concretefloor systems • one-way floor system • two-way floor system • waffle slab or dome • beam & joist

  5. Unit 13 page 132 Figure 13 - 2 Reinforced Concretefloor systems - one way

  6. Pan Joist system Concrete beam Unit 13 page 132 Reinforced Concretefloor systems - one way

  7. Unit 13 page 132 Reinforced Concretefloor systems - two way waffle Figure 13 - 3

  8. Waffle Pan or dome system Unit 13 page 132 Reinforced Concretefloor systems - two way waffle

  9. Unit 13 page 13 Figure 13 - 4 Reinforced Concretefloor systems - two way flat plate

  10. Unit 13 page 132 Steel Reinforcementrebar • use to provide additional strength to the concrete to resist forces in tension, shear, and compression • designated by • number of bars • size of bars • represented in eighths of an inch • placement or spacing

  11. location bars size bar spacing number of bars length of bar Unit 13 page 132 Steel Reinforcementrebar drawing identification 2 - # 5 x 19’-0” @ 2’ - 6” o/c place on 1 1/2” chairs 8 - #10 x 14’-6” @ 12” o/c top

  12. Unit 13 pages 132-133 Figure 13 - 5 Steel Reinforcementrebar grades

  13. Expansion Joints Unit 13 page 132 • placed between a slab & wall and around columns • used to to allow movement caused by expansion and contraction • located by the designer on the drawings

  14. Expansion Joints Unit 13 page 133 Figure 13 - 6

  15. Unit 13 pages 132 - 133 Columns & Beams columns • columns - are vertical support members designed to carry loads from the floors above down to the foundation • reinforced with reinforcing steel • shown on drawings on a grid system of numbers and letters • specified on a column schedule

  16. Unit 13 page 133 Figure 13 - 7 Columns

  17. Column Schedules • identify the size and shape of column • number, size, & location of bars • size & spacing of ties

  18. centerlines Columns typical centerline layout C D 1 2 3

  19. 24” 24” 24” 20” 20” 20” 8 - #9 6 - #7 #3 @ 4” Column Schedules Column # size rebar ties C1 C2 C3 D1 D2 D3

  20. Splicing Reinforcement • splicing is required to transfer the stresses through the reinforcing steel • accomplished by overlapping the bars by a number of times the size of the bars

  21. lapped up thru the column some tie into the beam Splicing Reinforcement Unit 13 page 134 Figure 13 -9

  22. Column reinforcing Footing reinforcing Splicing Reinforcement

  23. Slab reinforcing Slab Reinforcement

  24. Unit 13 page 135 Figure 13 - 11 Slab Reinforcement

  25. post tension steel slab steel beam steel Slab Reinforcement

  26. Unit 13 page 134 Structural Steel • structural steel refers a buildings constructed from structural steel shapes • wide flange beams - columns • I-beams - beams • angles - brick ledges • pipes - columns, handrail • tubes - columns • “C” channels • tees

  27. Unit 13 page 136 Structural Steel • loads are designed so floor loads are transferred to beams, beams to columns, and columns down to the foundation Figure 13 - 14

  28. Bar Joists Beams Columns Floor Framing Plan Structural Steel

  29. Structural Steel

  30. Unit 13 pages 134 - 135 Joists - Steel • typically refereed to open-web joists • used for floor and roof structures • support loads more efficiently than steel shapes • more affordable • designated by Steel Joist Institute

  31. Unit 13 pages 134 - 135 Joists - Steel • joist labeling • shortspan • longspan • deep longspan • two grades • J series • H series

  32. Unit 13 page 137 Figure 13 - 15 Joists - Steel Top Bearing Bottom Bearing

  33. Unit 13 Test Your Knowledge • take 10 minutes to complete the test on page 138

  34. Unit 13 Reinforced Concrete and Structural Steel Framing • Take 10 minutes & complete the questions for Activity 13-1 on page 139 refer to large prints 13-1a and 13-1b

  35. Unit 13 Reinforced Concrete and Structural Steel Framing • Take 10 minutes & complete the questions for Activity 13-2 on pages 140-141 refer to large prints 13-2a and 13-2b END OF UNIT 13

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