ASME BTH 1 2014 w Errata
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ASME BTH-1 Design of Below-the-Hook Lifting Devices – with Errata
| Published By | Publication Date | Number of Pages |
| ASME | 2014 | 81 |
BTH-1 provides minimum structural and mechanical design and electrical component selection criteria for ASME B30.20 below-the-hook lifting devices. The provisions in this Standard apply to the design or modification of below-the-hook lifting devices. Compliance with requirements and criteria that may be unique to specialized industries and environments is outside of the scope of this Standard. Lifting devices designed to this Standard shall comply with ASME B30.20, Below-the-Hook Lifting Devices. ASME B30.20 includes provisions that apply to the marking, construction, installation, inspection, testing, maintenance, and operation of below-the-hook lifting devices. ASME BTH-1 addresses only design requirements. As such, this Standard should be used in conjunction with ASME B30.20, which addresses safety requirements. ASME BTH-1 does not replace ASME B30.20. The design criteria set forth are minimum requirements that may be increased at the discretion of the lifting device manufacturer or a qualified person. ASME BTH-1 and ASME B30.20 are to be used in conjunction with equipment described in other volumes of the ASME B30 series of safety standards.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | Errata to ASME BTH-1-2014 Design of Below-the-Hook Lifting Devices |
| 6 | CONTENTS |
| 8 | FOREWORD |
| 9 | COMMITTEE ROSTER |
| 10 | CORRESPONDENCE WITH THE BTH COMMITTEE |
| 11 | SUMMARY OF CHANGES |
| 14 | Chapter 1 Scope, Definitions, and References 1-1 PURPOSE 1-2 SCOPE 1-3 NEW AND EXISTING DEVICES 1-4 GENERAL REQUIREMENTS 1-4.1 Design Responsibility 1-4.2 Units of Measure 1-4.3 Design Criteria 1-4.4 Analysis Methods 1-4.5 Material |
| 15 | 1-4.6 Welding 1-4.7 Temperature 1-5 DEFINITIONS 1-5.1 Definitions — General |
| 16 | 1-5.2 Definitions for Chapter 3 1-5.3 Definitions for Chapter 4 |
| 17 | 1-5.4 Definitions for Chapter 5 1-6 SYMBOLS 1-6.1 Symbols for Chapter 3 |
| 19 | 1-6.2 Symbols for Chapter 4 |
| 20 | 1-7 REFERENCES |
| 22 | Chapter 2 Lifter Classifications 2-1 GENERAL 2-1.1 Selection 2-1.2 Responsibility 2-1.3 Identification 2-1.4 Environment 2-2 DESIGN CATEGORY 2-2.1 Design Category A 2-2.2 Design Category B 2-3 SERVICE CLASS Tables Table 2-3-1 Service Class |
| 23 | Chapter 3 Structural Design 3-1 GENERAL 3-1.1 Purpose 3-1.2 Loads 3-1.3 Static Design Basis 3-1.3.1 Nominal Design Factors. 3-1.3.2 Other Design Conditions. 3-1.4 Fatigue Design Basis 3-1.5 Curved Members 3-1.6 Allowable Stresses 3-2 MEMBER DESIGN 3-2.1 Tension Members 3-2.2 Compression Members |
| 24 | Table 3-2.2-1 Limiting Width–Thickness Ratios for Compression Elements |
| 25 | 3-2.3 Flexural Members 3-2.3.1 Major Axis Bending of Compact Sections. 3-2.3.2 Major Axis and Minor Axis Bending of Compact Sections With Unbraced Length Greater Than Lp and Noncompact Sections. |
| 26 | 3-2.3.3 Major Axis Bending of Solid Rectangular Bars. 3-2.3.4 Minor Axis Bending of Compact Sections, Solid Bars, and Rectangular Sections. 3-2.3.5 Biaxial Bending. |
| 27 | 3-2.3.6 Shear on Bars, Pins, and Plates. 3-2.4 Combined Axial and Bending Stresses 3-2.5 Combined Normal and Shear Stresses |
| 28 | 3-2.6 Local Buckling 3-3 CONNECTION DESIGN 3-3.1 General 3-3.2 Bolted Connections |
| 29 | 3-3.3 Pinned Connections 3-3.3.1 Static Strength of the Plates. 3-3.3.2 Combined Stresses. 3-3.3.3 Fatigue Loading. 3-3.3.4 Bearing Stress. 3-3.3.5 Pin-to-Hole Clearance. 3-3.3.6 Pin Design. |
| 30 | 3-3.4 Welded Connections 3-3.4.1 General. 3-3.4.2 Groove Welds. 3-3.4.3 Fillet Welds. Table 3-3.4.2-1 Minimum Effective Throat Thickness of Partial-Penetration Groove Welds |
| 31 | 3-3.4.4 Plug and Slot Welds. 3-4 FATIGUE DESIGN 3-4.1 General 3-4.2 Lifter Classifications Table 3-3.4.3-1 Minimum Sizes of Fillet Welds |
| 32 | 3-4.3 Allowable Stress Ranges 3-4.4 Stress Categories 3-4.5 Tensile Fatigue in Threaded Fasteners 3-4.6 Cumulative Fatigue Analysis Table 3-4.3-1 Allowable Stress Ranges, ksi (MPa) |
| 33 | Table 3-4.4-1 Fatigue Design Parameters |
| 45 | 3-5 OTHER DESIGN CONSIDERATIONS 3-5.1 Impact Factors 3-5.2 Stress Concentrations 3-5.3 Deflection |
| 46 | Chapter 4 Mechanical Design 4-1 GENERAL 4-1.1 Purpose 4-1.2 Relation to Chapter 3 4-2 SHEAVES 4-2.1 Sheave Material 4-2.2 Running Sheaves 4-2.3 Equalizing Sheaves 4-2.4 Shaft Requirement 4-2.5 Lubrication 4-2.6 Sheave Design 4-2.7 Sheave Guard Figures Fig. 4-2.6-1 Sheave Dimensions Fig. 4-2.7-1 Sheave Gap |
| 47 | 4-3 WIRE ROPE 4-3.1 Relation to Other Standards 4-3.2 Rope Selection 4-3.3 Environment 4-3.4 Fleet Angle 4-3.5 Rope Ends 4-3.6 Rope Clips 4-4 DRIVE SYSTEMS 4-4.1 Drive Adjustment 4-4.2 Drive Design 4-4.3 Commercial Components 4-4.4 Lubrication 4-4.5 Operator Protection 4-5 GEARING 4-5.1 Gear Design 4-5.2 Gear Material 4-5.3 Gear Loading 4-5.4 Relation to Other Standards |
| 48 | Table 4-5.3-1 Strength Factors for Calculating Load Capacity (American Standard Tooth Forms) |
| 49 | 4-5.5 Bevel and Worm Gears 4-5.6 Split Gears 4-5.7 Lubrication 4-5.8 Operator Protection 4-5.9 Reducers 4-6 BEARINGS 4-6.1 Bearing Design 4-6.2 L10 Life 4-6.3 Bearing Loadings 4-6.4 Sleeve and Journal Bearings Table 4-6.2-1 L10 Life |
| 50 | 4-6.5 Lubrication 4-7 SHAFTING 4-7.1 Shaft Design 4-7.2 Shaft Alignment 4-7.3 Operator Protection 4-7.4 Shaft Details 4-7.5 Shaft Static Stress 4-7.6 Shaft Fatigue 4-7.6.1 Fatigue Stress Amplification Factor. 4-7.6.2 Endurance Limit. 4-7.6.3 Fatigue Stress. |
| 51 | 4-7.7 Shaft Displacement 4-8 FASTENERS 4-8.1 Fastener Markings 4-8.2 Fastener Selection 4-8.3 Fastener Stresses Table 4-7.5-1 Key Size Versus Shaft Diameter (ASME B17.1) Table 4-7.5-2 Key Size Versus Shaft Diameter (DIN 6885-1) Table 4-7.6.1-1 Fatigue Stress Amplification Factors |
| 52 | 4-8.4 Fastener Integrity 4-8.5 Fastener Installation 4-8.6 Noncritical Fasteners 4-9 GRIP SUPPORT FORCE 4-9.1 Purpose 4-9.2 Pressure-Gripping and Indentation Lifter Support Force 4-10 VACUUM LIFTING DEVICE DESIGN 4-10.1 Vacuum Pad Capacity 4-10.2 Vacuum Preservation Fig. 4-9.2-1 Illustration of Holding and Support Forces |
| 53 | 4-10.3 Vacuum Indicator 4-11 FLUID POWER SYSTEMS 4-11.1 Purpose 4-11.2 Fluid Power Components 4-11.3 Power Source/Supply 4-11.4 Fluid Pressure Indication 4-11.5 Fluid Pressure Control 4-11.6 System Guarding 4-12 LIFTING MAGNETS |
| 54 | Chapter 5 Electrical Components 5-1 GENERAL 5-1.1 Purpose 5-1.2 Relation to Other Standards 5-1.3 Power Requirements 5-2 ELECTRIC MOTORS AND BRAKES 5-2.1 Motors 5-2.2 Motor Sizing 5-2.3 Temperature Rise 5-2.4 Insulation 5-2.5 Brakes 5-2.6 Voltage Rating 5-3 OPERATOR INTERFACE 5-3.1 Locating Operator Interface 5-3.2 Unintended Operation |
| 55 | 5-3.3 Operating Levers 5-3.4 Control Circuits 5-3.5 Push-Button Type 5-3.6 Push-Button Markings 5-3.7 Sensor Protection 5-3.8 Indicators 5-4 CONTROLLERS AND AUXILIARY EQUIPMENT 5-4.1 Control Considerations 5-4.2 Control Location 5-4.3 Control Selection 5-4.4 Magnetic Control Contactors 5-4.5 Static and Inverter Controls 5-4.6 Lifting Magnet Controllers 5-4.7 Rectifiers 5-4.8 Electrical Enclosures 5-4.9 Branch Circuit Overcurrent Protection 5-4.10 System Guarding |
| 56 | 5-5 GROUNDING 5-5.1 Grounding Method 5-6 POWER DISCONNECTS 5-6.1 Disconnect for Powered Lifter 5-6.2 Disconnect for Vacuum Lifter 5-6.3 Disconnect for Magnet 5-6.4 Generator Supplied Magnets 5-7 BATTERIES 5-7.1 Battery Condition Indicator 5-7.2 Enclosures 5-7.3 Battery Alarm |
| 58 | NONMANDATORY APPENDIX A COMMENTARY FOR CHAPTER 1: SCOPE, DEFINITIONS, AND REFERENCES1 A-1 PURPOSE A-2 SCOPE A-3 NEW AND EXISTING DEVICES A-4 GENERAL REQUIREMENTS A-4.1 Design Responsibility A-4.2 Units of Measure A-4.3 Design Criteria A-4.4 Analysis Methods |
| 59 | A-4.5 Material A-4.6 Welding A-4.7 Temperature A-5 DEFINITIONS A-6 SYMBOLS A-7 REFERENCES |
| 62 | NONMANDATORY APPENDIX B COMMENTARY FOR CHAPTER 2: LIFTER CLASSIFICATIONS1 B-1 GENERAL B-1.1 Selection B-1.3 Identification B-1.4 Environment B-2 DESIGN CATEGORY B-2.1 Design Category A B-2.2 Design Category B |
| 63 | B-3 SERVICE CLASS |
| 64 | NONMANDATORY APPENDIX C COMMENTARY FOR CHAPTER 3: STRUCTURAL DESIGN1 C-1 GENERAL C-1.1 Purpose C-1.2 Loads C-1.3 Static Design Basis |
| 66 | C-1.5 Curved Members C-1.6 Allowable Stresses C-2 MEMBER DESIGN C-2.2 Compression Members C-2.3 Flexural Members C-2.3.1 Major Axis Bending of Compact Sections. C-2.3.2 Major Axis and Minor Axis Bending of Compact Sections With Unbraced Length Greater Than Lp and Noncompact Sections. |
| 67 | C-2.3.3 Major Axis Bending of Solid Rectangular Bars. C-2.3.4 Minor Axis Bending of Compact Sections, Solid Bars, and Rectangular Sections. C-2.3.6 Shear on Bars, Pins, and Plates. C-2.4 Combined Axial and Bending Stresses C-2.5 Combined Normal and Shear Stresses C-2.6 Local Buckling C-3 CONNECTION DESIGN C-3.1 General |
| 68 | C-3.2 Bolted Connections |
| 69 | C-3.3 Pinned Connections C-3.3.1 Static Strength of the Plates. |
| 70 | C-3.3.2 Combined Stresses. C-3.3.3 Fatigue Loading. C-3.3.4 Bearing Stress. C-3.3.5 Pin-to-Hole Clearance. C-3.3.6 Pin Design. C-3.4 Welded Connections |
| 71 | C-4 FATIGUE DESIGN C-4.1 General C-4.2 Lifter Classifications C-4.3 Allowable Stress Ranges C-4.4 Stress Categories C-4.5 Tensile Fatigue in Threaded Fasteners C-4.6 Cumulative Fatigue Analysis C-5 OTHER DESIGN CONSIDERATIONS C-5.1 Impact Factors |
| 72 | C-5.2 Stress Concentrations C-5.3 Deflection |
| 73 | NONMANDATORY APPENDIX D COMMENTARY FOR CHAPTER 4: MECHANICAL DESIGN1 D-1 GENERAL D-1.1 Purpose D-1.2 Relation to Chapter 3 D-2 SHEAVES D-2.1 Sheave Material D-2.2 Running Sheaves D-2.4 Shaft Requirement D-2.5 Lubrication D-2.6 Sheave Design D-2.7 Sheave Guard |
| 74 | D-3 WIRE ROPE D-3.1 Relation to Other Standards D-3.2 Rope Selection D-3.3 Environment D-4 DRIVE SYSTEMS D-4.1 Drive Adjustment D-4.3 Commercial Components D-4.5 Operator Protection D-5 GEARING D-5.3 Gear Loading D-5.4 Relation to Other Standards D-5.7 Lubrication D-6 BEARINGS D-6.2 L10 Life D-6.3 Bearing Loadings |
| 75 | D-6.5 Lubrication D-7 SHAFTING D-7.5 Shaft Static Stress D-7.6 Shaft Fatigue D-8 FASTENERS D-8.5 Fastener Installation D-9 GRIP SUPPORT FORCE D-9.2 Pressure-Gripping and Indentation Lifter Support Force D-10 VACUUM LIFTING DEVICE DESIGN D-10.2 Vacuum Preservation D-11 FLUID POWER SYSTEMS D-11.2 Fluid Power Components |
| 76 | NONMANDATORY APPENDIX E COMMENTARY FOR CHAPTER 5: ELECTRICAL COMPONENTS1 E-1 GENERAL E-1.1 Purpose E-2 ELECTRIC MOTORS AND BRAKES E-2.1 Motors E-2.2 Motor Sizing E-2.4 Insulation E-2.5 Brakes E-2.6 Voltage Rating E-3 OPERATOR INTERFACE E-3.1 Locating Operator Interface E-3.3 Operating Levers E-3.4 Control Circuits E-3.5 Push-Button Type E-3.6 Push-Button Markings E-4 CONTROLLERS AND AUXILIARY EQUIPMENT E-4.2 Control Location |
| 77 | E-4.4 Magnetic Control Contactors E-4.5 Static and Inverter Controls E-4.7 Rectifiers E-4.8 Electrical Enclosures E-5 GROUNDING E-5.1 Grounding Method |
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