0137033451 pp12
TRANSCRIPT
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
Chapter 12
CONCRETE CONSTRUCTION
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
• Concrete, or more properly portland cement concrete, is one of the world’s most versatile and widely used construction materials. – Other construction applications range from
its use in foundations for small structures, through structural components such as beams, columns, and wall panels, to massive concrete dams.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-1. Typical distribution of concrete construction costs.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
• Cast-in-Place Concrete– Walls and Wall Footings– Floors and Roofs
• One-Way Slabs• Two-Way Slabs• Flat Slabs
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-2. Typical cast-in-place column and wall shapes.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-3. Pumping concrete into bottom of column form. (Courtesy of Gates & Sons, Inc.)
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-4. Floor slab construction. (Courtesy of Concrete Reinforcing Steel Institute [CRSI])
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-5. Waffle slab. (Courtesy of Concrete Reinforcing Steel Institute [CRSI])
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-6. Flat slab and flat plate slab. (Courtesy of Concrete Reinforcing Steel Institute [CRSI])
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
• Precast Concrete
• Prestressed Concrete
• Architectural Concrete
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-7. Precast beam and girder shapes.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-8. Precast slab shapes.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-9. Steps in tilt-up construction. (Courtesy of Meadow Burke)
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-10. Stresses in a prestressed simple beam.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONSTRUCTION APPLICATIONS OF CONCRETE
FIGURE 12-11. Lifting prestressed beam at the center.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE CONSTRUCTION PRACTICES
• Concrete construction involves concrete batching, mixing, transporting, placing, consolidating, finishing, and curing.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE CONSTRUCTION PRACTICES
• Transporting and Handling
• Placing and Consolidating
• Finishing and Curing
• Hot-Weather Concreting
• Cold-Weather Concreting
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE CONSTRUCTION PRACTICES
FIGURE 12-15. Concrete pump and truck mixer. (Courtesy of Morgen Manufacturing Co.)
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE CONSTRUCTION PRACTICES
FIGURE 12-16. Ride-on power trowel. (Courtesy of Wacker Corporation)
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE CONSTRUCTION PRACTICES
FIGURE 12-17. Roller finisher being used on large slab pour. (Courtesy of Terex Roadbuilding)
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
• General Requirements for Formwork
• Typical Formwork
• Minimizing Cost of Formwork
• Construction Practices
• Expansion and Control Joints
• Formwork Safety
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-18. Typical wall form.
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-19. Typical form ties.FIGURE 12-20. Typical column form. (U.S. Department of the Army)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-21. Form for elevated slab. (Courtesy of American Concrete Institute)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-22. Beam and slab form. (Courtesy of American Concrete Institute)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-23. One-way slab form. (Courtesy of American Concrete Institute)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-24. Two-way slab form. (Courtesy of American Concrete Institute)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-25. Wood form for stairway. (U.S. Department of the Army)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-26. Repositioning flying form. (Courtesy of CMI Terex Corporation)
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Construction Methods and Management, 8th ed. S. W. Nunnally
CONCRETE FORMWORK
FIGURE 12-27. Mudsills. (Courtesy of American Concrete Institute)
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
• Concrete Reinforcing Steel– Reinforcing Bars– Welded Wire Fabric– Spirals
• Placement of Reinforcing
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
Table 12-1. ASTM standard reinforcing bar sizes
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
FIGURE 12-28. Reinforcing bar identification marks. (Courtesy of Concrete Reinforcing Steel Institute [CRSI])
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
FIGURE 12-28. Continued
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Copyright ©2011, 2006 by Pearson Education, Inc.publishing as Pearson [imprint]
Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
Table 12-2. Steel wire data for welded wire fabric
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
FIGURE 12-29. Placement of reinforcing steel. (Courtesy of Concrete Reinforcing Steel Institute [CSRI])
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
FIGURE 12-30. Wire bar supports. (Courtesy of Concrete Reinforcing Steel Institute [CSRI])
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Construction Methods and Management, 8th ed. S. W. Nunnally
REINFORCING STEEL
FIGURE 12-31. Placing reinforcing steel in a beam. (Courtesy of Concrete Reinforcing Steel Institute [CRSI])
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Construction Methods and Management, 8th ed. S. W. Nunnally
QUALITY CONTROL
• Common Deficiencies in Concrete Construction– Structural Concrete– Concrete Slabs on Grade
• Inspection and Testing