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Commercial Framing C D 1 2 3 Prints Unit 13
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Unit 13 Commercial Framing Prints
page 131 Learning Objectives Recognize various types of concrete floors Understand concrete reinforcing notation Read beam & column schedules Identify various structural members
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Unit 13 page 131 Commercial Framing Large commercial & industrial buildings are constructed around reinforced concrete & structural steel
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Reinforced Concrete floor systems
Unit 13 pages Reinforced Concrete floor systems one-way floor system two-way floor system waffle slab or dome beam & joist
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Reinforced Concrete floor systems - one way
Unit 13 page 132 Figure
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Reinforced Concrete floor systems - one way
Unit 13 page 132 Pan Joist system Concrete beam
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Reinforced Concrete floor systems - two way waffle
Unit 13 page 132 Figure
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Reinforced Concrete floor systems - two way waffle
Unit 13 page 132 Waffle Pan or dome system
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Reinforced Concrete floor systems - two way flat plate
Unit 13 page 13 Figure
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Steel Reinforcement rebar
Unit 13 page 132 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
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Steel Reinforcement rebar
Unit 13 page 132 Steel Reinforcement rebar drawing identification 2 - # 5 x 2’ - 6” o/c place on 1 1/2” chairs 8 - #10 x 12” o/c top number of bars bars size length of bar bar spacing location
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Steel Reinforcement rebar grades
Unit 13 pages Figure
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Expansion Joints placed between a slab & wall and around columns
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
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Expansion Joints Unit 13 page 133 Figure
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Columns & Beams columns
Unit 13 pages 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
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Columns Unit 13 page 133 Figure
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Column Schedules identify the size and shape of column
number, size, & location of bars size & spacing of ties
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Columns typical centerline layout
centerlines D 1 2 3
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Column Schedules C1 24” 8 - #9 #3 @ 4” C2 C3 D1 20” 6 - #7 D2 D3
size rebar ties C1 C2 C3 D1 D2 D3 24” 20” 8 - #9 6 - #7 4”
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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
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Splicing Reinforcement
Unit 13 page 134 lapped up thru the column some tie into the beam Figure 13 -9
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Splicing Reinforcement
Column reinforcing Footing reinforcing
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Slab Reinforcement Slab reinforcing
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Unit 13 page 135 Figure Slab Reinforcement
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Slab Reinforcement post tension steel slab steel beam steel
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Structural Steel Unit 13 page 134 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
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Structural Steel Unit 13 page 136 loads are designed so floor loads are transferred to beams, beams to columns, and columns down to the foundation Figure
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Structural Steel Floor Framing Plan Bar Joists Beams Columns
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Structural Steel
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Joists - Steel typically refereed to open-web joists
Unit 13 pages 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
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Joists - Steel joist labeling two grades shortspan longspan
Unit 13 pages Joists - Steel joist labeling shortspan longspan deep longspan two grades J series H series
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Joists - Steel Top Bearing Bottom Bearing Unit 13 page 137
Figure Top Bearing Bottom Bearing
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Test Your Knowledge take 10 minutes to complete the test on page 138
Unit 13 Test Your Knowledge take 10 minutes to complete the test on page 138
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Reinforced Concrete and Structural Steel Framing
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
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Reinforced Concrete and Structural Steel Framing
Unit 13 Reinforced Concrete and Structural Steel Framing Take 10 minutes & complete the questions for Activity 13-2 on pages refer to large prints 13-2a and 13-2b END OF UNIT 13
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