Structural Bolting Handbook 2010

Based upon the December 31, 2009 edition of the RCSC Specification and the 2010 edition of the AISC Specification for Structural Steel Buildings

 a must for:

4" by 8" pocket-sized convenience, 116 pages

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100+ copies

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Table of Contents

 

 

page

Joint Types

5

Load Transfer through Shear-Bearing

6

Load Transfer through Friction

8

Load Transfer through Direct Tension

9

 

 

Guide to RCSC Specification Provisions

 

Loading - Shear Only

10

Loading - Combined Shear and Tension

11

Loading - Direct Tension Only

12

 

 

Snug-Tightened Joints

 

Installation

13

Inspection Procedures

15

 

 

Pretensioned and Slip-Critical Joints

 

Pre-Installation Verification Requirements

16

Table PIV-1. Pre-Installation Verification Required Pretension

16

Table P-1. Required Minimum Bolt Pretension

17

 

 

Turn-of-Nut Method

 

Pre-Installation Verification

 

   Using Bolt Tension Calibration Device (BTCD)

18

   For Bolts Too Short to Fit into the  BTCD

19

Pretensioning

 

   Turning the nut

20

   Turning the bolt head

21

Table T-1. Turn of Nut Tightening Turns

22

Table T-2. Turn of Nut Tightening Turns for Sloped Surfaces under Bolt Head and/or Nut

24

Table T-3. Turn-of-Nut Rotation Table

26

Inspection Procedures

27

 

 

Twist-Off-Type Tension-Control Bolt Method

 

Pre-Installation Verification

 

   Using Bolt Tension Calibration Device (BTCD)

29

   For Bolts Too Short to Fit into the  BTCD

30

Pretensioning

31

Inspection Procedures

32

 

 

Direct-Tension-Indicator Method

 

Pre-Installation Verification

 

  Using Bolt Tension Calibration Device (BTCD)

 

     DTI placed under bolt head

34

     DTI placed under nut

36

 For Bolts Too Short to Fit into the  BTCD

 

     DTI placed under bolt head

38

     DTI placed under nut

40

Pretensioning

 

     DTI placed under bolt head

42

     DTI placed under nut

43

Table DTI-1. DTI Data

45

Inspection Procedures

46

 

 

Squirter®  DTIs

 

Calibration

 

Using Bolt Tension Calibration Device (BTCD)

48

For Bolts Too Short to Fit into the  BTCD

49

Pretensioning

51

Inspection Procedures

53

 

 

Calibrated Wrench Method

 

Pre-Installation Verification

 

   Using Bolt Tension Calibration Device (BTCD)

54

   For Bolts Too Short to Fit into the  BTCD

56

Pretensioning

58

Inspection Procedures

59

 

 

Inspection under the AISC Specification for Structural Steel Buildings (2010), Chapter N Quality Control and Quality Assurance

61

 

 

Arbitration of Disputes - Torque Method

 

Using Bolt Tension Calibration Device (BTCD)

63

For Bolts Too Short to Fit into the  BTCD

66

 

 

Discussions

 

Hole-Making

68

Table H-1. Hole Sizes

69

Jobsite Storage

70

Lubrication of Uncoated Fasteners

71

Lubrication of Galvanized Fasteners

73

Systematic Tightening

74

Requirements for Washers

75

Bolt Stickout

78

Torque

79

Overtightening High-Strength Bolts

81

Thread Stripping

83

Reuse of Bolts Previously Pretensioned

84

 

 

AASHTO / FHWA Rotational Capacity Test

 

Using Bolt Tension Calibration Device (BTCD)

85

For Bolts Too Short to Fit into the  BTCD

88

 

 

Bolt Tension Calibration Devices

 

Bolt Tension Calibration Devices

90

Table SW-1. Skidmore-Wilhelm Data

91

Determining the DTI Calibration for Use as Bolt Tension Calibration Device

93

 

 

Installation Wrenches

 

Table W-1. Suggested Impact Wrenches

95

 

 

Bolt / Nut Combinations

 

Table N-1. Nuts for A325 and A490 Bolts

96

Table N-2. Nuts for A307 Bolts

97

Table N-3. Nuts for A449 Bolts

98

Table N-4. Nuts for A354 Bolts

99

 

 

Bolts

 

Bolt Head Markings - A325, A490, A449

100

Bolt Head Markings - A307, A354

101

Table D-1. Dimensions of Heavy Hex Bolts

102

Table D-2. Dimensions of F1852 and F2280 Twist-Off-Type Tension-Control Bolts

103

Table D-3. Dimensions of Hex Bolts

104

Bolt Manufacturers’ and Suppliers’ Marks

105

 

 

Nuts

 

Nut Markings - A563, A194

106

Table D-4. Dimensions of Heavy Hex Nuts

107

 

 

Washers and Direct-Tension Indicators (DTIs)

 

Table D-5. Dimensions of F436 Washers

107

Table D-6. Dimensions of F959 Direct-Tension-Indicators

108

 

 

Bolt Lengths

 

Table L-1. Approximate Bolt Lengths - A325, F1852, A490 and F2280

109

Suggested Bolt Lengths - 3/4" diameter

110

Suggested Bolt Lengths - 7/8" diameter

112

Suggested Bolt Lengths - 1" diameter

114

 

 

Notes

116