Commercial Framing C D 1 2 3 Prints Unit 13

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

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

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

Reinforced Concrete floor systems - one way Unit 13 page 132 Figure 13 - 2

Reinforced Concrete floor systems - one way Unit 13 page 132 Pan Joist system Concrete beam

Reinforced Concrete floor systems - two way waffle Unit 13 page 132 Figure 13 - 3

Reinforced Concrete floor systems - two way waffle Unit 13 page 132 Waffle Pan or dome system

Reinforced Concrete floor systems - two way flat plate Unit 13 page 13 Figure 13 - 4

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

Steel Reinforcement rebar Unit 13 page 132 Steel Reinforcement rebar 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 number of bars bars size length of bar bar spacing location

Steel Reinforcement rebar grades Unit 13 pages 132-133 Figure 13 - 5

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

Expansion Joints Unit 13 page 133 Figure 13 - 6

Columns & Beams columns Unit 13 pages 132 - 133 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

Columns Unit 13 page 133 Figure 13 - 7

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

Columns typical centerline layout centerlines D 1 2 3

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 #3 @ 4”

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

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

Splicing Reinforcement Column reinforcing Footing reinforcing

Slab Reinforcement Slab reinforcing

Unit 13 page 135 Figure 13 - 11 Slab Reinforcement

Slab Reinforcement post tension steel slab steel beam steel

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

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 13 - 14

Structural Steel Floor Framing Plan Bar Joists Beams Columns

Structural Steel

Joists - Steel typically refereed to open-web joists 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

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

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

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

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

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 140-141 refer to large prints 13-2a and 13-2b END OF UNIT 13