Preface |
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xiii | |
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1 Introduction to Metal Building Systems |
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1 | (14) |
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1.1 Two Main Classes of Metal Building Systems |
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1 | (1) |
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1.2 Frame-and-Purlin Buildings: Primary and Secondary Framing |
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1 | (8) |
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1.2.1 Primary Frames: Usage and Terminology |
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3 | (1) |
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1.2.2 Single-Span Rigid Frames |
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3 | (1) |
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1.2.3 Multiple-Span Rigid Frames |
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4 | (1) |
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5 | (1) |
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6 | (1) |
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1.2.6 Other Primary Framing Systems |
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7 | (1) |
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1.2.7 Endwall and Sidewall Framing |
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7 | (2) |
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1.3 Frame-and-Purlin Buildings: Lateral-Force-Resisting Systems |
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9 | (4) |
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1.4 Quonset Hut-Type Buildings |
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13 | (2) |
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14 | (1) |
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2 Foundation Design Basics |
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15 | (22) |
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2.1 Soil Types and Properties |
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15 | (7) |
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15 | (1) |
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2.1.2 Some Relevant Soil Properties |
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15 | (1) |
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2.1.3 Soil Classification |
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16 | (1) |
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2.1.4 Characteristics of Coarse-Grained Soils |
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17 | (1) |
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2.1.5 Characteristics of Fine-Grained Soils |
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17 | (2) |
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2.1.6 The Atterberg Limits |
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19 | (1) |
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20 | (1) |
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21 | (1) |
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21 | (1) |
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22 | (2) |
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2.2.1 Expansive Soils: The Main Issues |
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22 | (1) |
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2.2.2 Measuring Expansive Potential of Soil |
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22 | (1) |
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23 | (1) |
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2.2.4 Collapsing Soils and Karst |
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24 | (1) |
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24 | (5) |
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2.3.1 Types of Investigation |
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24 | (1) |
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2.3.2 Preliminary Exploration |
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25 | (1) |
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2.3.3 Detailed Exploration: Soil Borings and Other Methods |
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26 | (2) |
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28 | (1) |
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2.4 Settlement and Heave Issues |
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29 | (4) |
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2.4.1 What Causes Settlement? |
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29 | (1) |
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2.4.2 Settlement in Sands and Gravels |
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29 | (1) |
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2.4.3 Settlement in Silts and Clays |
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30 | (1) |
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2.4.4 Differential Settlement |
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31 | (1) |
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2.4.5 Some Criteria for Tolerable Differential Settlement |
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32 | (1) |
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2.5 Determination of Allowable Bearing Value |
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33 | (2) |
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2.5.1 Why Not Simply Use the Code Tables? |
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33 | (1) |
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2.5.2 Special Provisions for Seismic Areas |
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34 | (1) |
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2.5.3 What Constitutes a Foundation Failure? |
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34 | (1) |
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35 | (1) |
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2.6 Shallow vs. Deep Foundations |
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35 | (2) |
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36 | (1) |
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3 Foundations for Metal Building Systems: The Main Issues |
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37 | (22) |
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3.1 The Differences between Foundations for Conventional Buildings and Metal Building Systems |
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37 | (6) |
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3.1.1 Light Weight Means Large Net Uplift |
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37 | (3) |
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3.1.2 Large Lateral Reactions |
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40 | (1) |
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3.1.3 Factors of Safety and One-Third Stress Increase |
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41 | (1) |
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3.1.4 In Some Circumstances, Uncertainty of Reactions |
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42 | (1) |
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3.2 Estimating Column Reactions |
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43 | (2) |
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3.2.1 Methods of Estimating Reactions |
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43 | (1) |
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3.2.2 How Accurate Are the Estimates? |
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44 | (1) |
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3.3 Effects of Column Fixity on Foundations |
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45 | (1) |
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3.3.1 Is There a Cost Advantage? |
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45 | (1) |
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3.3.2 Feasibility of Fixed-Base Columns in MBS |
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45 | (1) |
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3.3.3 Communication Breakdown |
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46 | (1) |
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3.4 General Procedure for Foundation Design |
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46 | (4) |
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3.4.1 Assign Responsibilities |
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46 | (1) |
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3.4.2 Collect Design Information |
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47 | (1) |
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3.4.3 Research Relevant Code Provisions and Determine Reactions |
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47 | (1) |
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3.4.4 Determine Controlling Load Combinations |
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47 | (2) |
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3.4.5 Choose Shallow or Deep Foundations |
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49 | (1) |
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3.4.6 Establish Minimum Foundation Depth |
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49 | (1) |
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3.4.7 Design the Foundation |
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49 | (1) |
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3.5 Reliability, Versatility, and Cost |
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50 | (2) |
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50 | (1) |
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50 | (2) |
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3.6 Column Pedestals (Piers) |
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52 | (7) |
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3.6.1 The Area Inviting Controversy |
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52 | (1) |
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3.6.2 Two Methods of Supporting Steel Columns in Shallow Foundations |
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52 | (2) |
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3.6.3 Establishing Sizes of Column Pedestals (Piers) |
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54 | (1) |
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3.6.4 Minimum Reinforcement of Piers |
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54 | (3) |
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57 | (2) |
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4 Design of Isolated Column Footings |
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59 | (20) |
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4.1 The Basics of Footing Design and Construction |
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59 | (3) |
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4.1.1 Basic Design Requirements |
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59 | (1) |
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4.1.2 Construction Requirements |
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60 | (1) |
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60 | (1) |
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4.1.4 Reinforced-Concrete Footings |
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60 | (1) |
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4.1.5 Plain-Concrete and Other Footings |
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60 | (1) |
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4.1.6 Nominal vs. Factored Loading |
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61 | (1) |
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62 | (17) |
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4.2.1 General Design Procedure |
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62 | (1) |
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4.2.2 Using ASD Load Combinations |
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62 | (1) |
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4.2.3 Using Load Combinations for Strength Design |
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63 | (1) |
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4.2.4 What Is Included in the Dead Load? |
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63 | (1) |
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4.2.5 Designing for Moment |
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64 | (1) |
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4.2.6 Designing for Shear |
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65 | (3) |
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4.2.7 Minimum Footing Reinforcement |
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68 | (1) |
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4.2.8 Distribution of Reinforcement Rectangular Footings |
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68 | (1) |
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4.2.9 Designing for Uplift |
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69 | (1) |
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4.2.10 Reinforcement at Top of Footings |
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70 | (7) |
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77 | (2) |
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5 Foundation Walls and Wall Footings |
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79 | (10) |
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5.1 The Basics of Design and Construction |
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79 | (10) |
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5.1.1 Foundation Options for Support of Exterior Walls |
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79 | (1) |
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5.1.2 Design and Construction Requirements for Foundation Walls |
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80 | (3) |
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5.1.3 Construction of Wall Footings |
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83 | (1) |
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5.1.4 Design of Wall Footings |
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84 | (3) |
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87 | (2) |
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6 Tie Rods, Hairpins, and Slab Ties |
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89 | (24) |
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89 | (14) |
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89 | (1) |
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6.1.2 Some Basic Tie-Rod Systems |
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90 | (2) |
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6.1.3 A Reliable Tie-Rod Design |
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92 | (3) |
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6.1.4 Development of Tie Rods by Standard Hooks |
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95 | (1) |
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6.1.5 Design of Tie Rods Considering Elastic Elongation |
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96 | (1) |
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6.1.6 Post-Tensioned Tie Rods |
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97 | (2) |
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99 | (1) |
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6.1.8 Which Tie-Rod Design Is Best? |
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100 | (3) |
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6.2 Hairpins and Slab Ties |
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103 | (10) |
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6.2.1 Hairpins: The Essence of the System |
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103 | (1) |
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6.2.2 Hairpins in Slabs on Grade |
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104 | (1) |
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6.2.3 Hairpins: The Design Process |
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105 | (2) |
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6.2.4 Development of Straight Bars in Slabs |
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107 | (2) |
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109 | (2) |
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6.2.6 Using Foundation Seats |
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111 | (1) |
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111 | (2) |
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7 Moment-Resisting Foundations |
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113 | (30) |
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113 | (2) |
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7.1.1 A Close Relative: Cantilevered Retaining Wall |
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113 | (2) |
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7.1.2 Advantages and Disadvantages |
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115 | (1) |
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7.2 Active, Passive, and At-Rest Soil Pressures |
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115 | (4) |
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7.2.1 The Nature of Active, Passive, and At-Rest Pressures |
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115 | (2) |
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7.2.2 How to Compute Active, Passive, and At-Rest Pressure |
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117 | (1) |
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7.2.3 Typical Values of Active, Passive, and At-Rest Coefficients |
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117 | (2) |
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7.3 Lateral Sliding Resistance |
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119 | (2) |
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7.3.1 The Nature of Lateral Sliding Resistance |
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119 | (1) |
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7.3.2 Combining Lateral Sliding Resistance and Passive Pressure Resistance |
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120 | (1) |
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7.4 Factors of Safety against Overturning and Sliding |
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121 | (1) |
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7.4.1 No Explicit Factors of Safety in IBC Load Combinations |
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121 | (1) |
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7.4.2 Explicit Factors of Safety for Retaining Walls |
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121 | (1) |
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7.4.3 How to Increase Lateral Sliding Resistance |
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122 | (1) |
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7.5 The Design Procedures |
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122 | (21) |
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122 | (1) |
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7.5.2 Design Using Combined Stresses Acting on Soil |
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123 | (3) |
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7.5.3 The Pressure Wedge Method |
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126 | (1) |
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7.5.4 General Design Process |
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127 | (1) |
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7.5.5 Moment-Resisting Foundations in Combination with Slab Dowels |
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127 | (14) |
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141 | (2) |
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8 Slab with Haunch, Trench Footings, and Mats |
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143 | (30) |
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143 | (21) |
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143 | (1) |
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8.1.2 The Role of Girt Inset |
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144 | (1) |
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8.1.3 Resisting the Column Reactions |
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144 | (20) |
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164 | (1) |
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165 | (8) |
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165 | (2) |
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8.3.2 The Basics of Design |
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167 | (1) |
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8.3.3 Typical Construction in Cold Climates |
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168 | (3) |
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8.3.4 Using Anchor Bolts in Mats |
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171 | (1) |
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172 | (1) |
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173 | (12) |
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173 | (1) |
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173 | (3) |
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9.2.1 The Basics of Design and Construction |
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173 | (1) |
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9.2.2 Resisting Uplift and Lateral Column Reactions with Deep Piers |
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174 | (2) |
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176 | (9) |
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176 | (1) |
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9.3.2 The Minimum Number of Piles |
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177 | (1) |
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9.3.3 Using Structural Slab in Combination with Deep Foundations |
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178 | (3) |
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9.3.4 Resisting Uplift with Piles |
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181 | (1) |
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9.3.5 Resisting Lateral Column Reactions with Piles |
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181 | (2) |
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183 | (2) |
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10 Anchors in Metal Building Systems |
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185 | (50) |
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185 | (1) |
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10.1.1 Terminology and Purpose |
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185 | (1) |
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10.1.2 The Minimum Number of Anchor Bolts |
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186 | (1) |
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10.2 Anchor Bolts: Construction and Installation |
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186 | (7) |
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10.2.1 Typical Construction |
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186 | (1) |
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10.2.2 Field Installation |
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187 | (1) |
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10.2.3 Placement Tolerances vs. Oversized Holes in Column Base Plates |
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188 | (2) |
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10.2.4 Using Anchor Bolts for Column Leveling |
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190 | (1) |
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10.2.5 Should Anchor Bolts Be Used to Transfer Horizontal Column Reactions? |
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191 | (2) |
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10.3 Design of Anchor Bolts: General Provisions |
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193 | (5) |
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10.3.1 Provisions of the International Building Code |
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193 | (3) |
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10.3.2 ACI318-08 Appendix D |
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196 | (2) |
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10.4 Design of Anchor Bolts for Tension per ACI 318-08 Appendix D |
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198 | (16) |
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10.4.1 Tensile Strength of Anchor Bolt vs. Tensile Strength of Concrete for a Single Anchor |
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198 | (1) |
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10.4.2 Tensile Strength of an Anchor Group |
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198 | (2) |
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10.4.3 Tensile Strength of Steel Anchors |
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200 | (1) |
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10.4.4 Pullout Strength of Anchor in Tension |
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201 | (1) |
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10.4.5 Concrete Side-Face Blowout Strength of Headed Anchors in Tension |
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202 | (1) |
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10.4.6 Concrete Breakout Strength of Anchors in Tension |
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202 | (5) |
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10.4.7 Using Anchor Reinforcement for Tension |
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207 | (7) |
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10.5 Design of Anchors for Shear per ACI 318-08 Appendix D |
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214 | (21) |
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214 | (1) |
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10.5.2 Steel Strength of Anchors in Shear |
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215 | (1) |
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10.5.3 Concrete Breakout Strength in Shear: General |
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216 | (4) |
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10.5.4 Basic Concrete Breakout Strength in Shear Vb |
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220 | (1) |
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10.5.5 Concrete Breakout Strength in Shear for Anchors Close to Edge on Three or More Sides |
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221 | (1) |
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10.5.6 Concrete Breakout Strength in Shear: Modification Factors |
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222 | (2) |
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10.5.7 Using Anchor Reinforcement for Concrete Breakout Strength in Shear |
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224 | (3) |
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10.5.8 Using a Combination of Edge Reinforcement and Anchor Reinforcement for Concrete Breakout Strength in Shear |
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227 | (1) |
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10.5.9 Concrete Pryout Strength in Shear |
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227 | (1) |
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10.5.10 Combined Tension and Shear |
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228 | (1) |
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10.5.11 Minimum Edge Distances and Spacing of Anchors |
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228 | (5) |
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10.5.12 Concluding Remarks |
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233 | (1) |
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234 | (1) |
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11 Concrete Embedments in Metal Building Systems |
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235 | (28) |
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11.1 The Role of Concrete Embedments |
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235 | (2) |
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11.1.1 Prior Practices vs. Today's Code Requirements |
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235 | (1) |
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11.1.2 Two Options for Resisting High Horizontal Column Reactions |
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235 | (1) |
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11.1.3 Transfer of Uplift Forces to Foundations: No Alternative to Anchor Bolts? |
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236 | (1) |
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11.2 Using Anchor Bolts to Transfer Horizontal Column Reactions to Foundations |
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237 | (5) |
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11.2.1 Some Problems with Shear Resistance of Anchor Bolts |
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237 | (1) |
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11.2.2 Possible Solutions to Enable Resistance of Anchor Bolts to Horizontal Forces |
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238 | (2) |
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11.2.3 Design of Anchor Bolts for Bending |
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240 | (2) |
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11.3 Concrete Embedments for the Transfer of Horizontal Column Reactions to Foundations: An Overview |
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242 | (1) |
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11.4 Shear Lugs and the Newman Lug |
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243 | (11) |
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11.4.1 Construction of Shear Lugs |
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243 | (2) |
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11.4.2 Minimum Anchor Bolt Spacing and Column Sizes Used with Shear Lugs |
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245 | (2) |
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11.4.3 Design of Shear Lugs: General Procedure |
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247 | (2) |
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11.4.4 Determination of Bearing Strength |
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249 | (1) |
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11.4.5 Determination of Concrete Shear Strength |
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249 | (1) |
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250 | (4) |
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11.5 Recessed Column Base |
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254 | (3) |
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254 | (1) |
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255 | (2) |
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257 | (6) |
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257 | (3) |
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11.6.2 Embedded Plate with Welded-On Studs |
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260 | (1) |
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261 | (2) |
A Frame Reaction Tables |
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263 | (30) |
Index |
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293 | |