Snowman’s Notes

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SNOWMAN’S NOTES

Insulator’s Notes

FEBRUARY 1, 2018

SNOWMAN

Member of Local 110

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CONTENTS

Snowman’s Notes ................................ ....... 1

Basics ................................ .......................... 6

Line Numbering ................................ .......7

Abbreviations ................................ ..........8

Basic Tool List ................................ ..........9

Fractions and Decimals ......................... 10

Flanges ................................ .................. 11

Circle Weights ................................ ....... 12

Metal Bands ................................ .......... 13

90-Degree Elbows ................................ . 15

Jacketing and 45-degree elbows ........... 16

Flange Sizes ................................ ........... 17

Copper Tube Table ................................ 18

90 Degree Aluminum ELL-JACS ............. 19

45-Degree Aluminum ELL-JACS ............. 20

Copper Pipe Jacketing ........................... 22

Iron Jacketing ................................ ........ 23

Math ................................ ......................... 24

Math ................................ ..................... 25

Shapes and Formulas ........................ 25

Square or Rectangle .......................... 26

Parallelogram ................................ .... 26

Triangle ................................ ............. 26

Apezoid ................................ ............. 26

Circle ................................ ................. 26

Prism ................................ ................. 27

Cylinder ................................ ............. 27

Pyramid ................................ ............. 27

Cone ................................ .................. 27

Sphere ................................ ............... 27

Rise ................................ ................... 28

Mitres: ................................ .............. 29

Lags: ................................ .................. 29

Figuring Lag Sizes .............................. 29

Finding the inside lag size ................. 29

Parallel Line Development .................... 30

Truncated Cylinder ............................ 30

The Development of Figure 2 ............ 31

1.2 Position of Joint lines .................. 31

2.2 Development of an Offset ........... 32

2.3 Development of a 90º Segmental

bend -1 ................................ .............. 34

Full, 2 Half Segments ........................ 34

2.4 Development of a 90º Segmental

Bend -5................................ .............. 34

Full, 2 Half Segments ........................ 34

The Development of Figure 2 ............ 35

2.5 Segmental Joints (Simplified) ...... 35

2.6 Efficient Drawing Layout and

Sequencing ................................ ....... 36

of Layouts ................................ ......... 36

Shape Math ................................ .......... 37

Line and Circle Division ............................. 39

Line Division ................................ .......... 40

Mathematically: ................................ 40

Basic Geometry: ................................ 40

Ruler Method: ................................ ... 40

Trial & Error: ................................ ..... 40

Circle Division (Bisecting) ...................... 41

Parts of a Circle ................................ ..... 42

Circle Division (Bisecting) ...................... 43

Reference Cards ................................ ........ 44

K-Factor ................................ ................ 45

Comparative Insulation Efficiency ..... 45

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Elbows ................................ ................... 46

Elbows Continued ................................ . 47

End Caps ................................ ............... 48

Calculating Elbows ................................ 49

C Bevels: Square Method ...................... 51

Iron Pipe Sizes: Call out versus Actual ... 52

Copper Pipe Call-out versus actual size . 53

Pipe Wall Thickness (I.P.) ...................... 54

Work Rest Regimen for Hot Weather ... 55

Wind Chill Chart ................................ .... 56

Fractions and Decimals ......................... 57

Flange Size Chart ................................ ... 58

Head Segments ................................ ..... 59

Enlarging or Reducing a Pattern ............ 60

Long Radius Mitered Insulation Elbows

(Long Radius Weld ELL Chart)................ 61

Bevel and End Caps ................................ ... 63

Calculating Elbows ................................ 64

Bevels: Square Method ......................... 65

Patterns and Layouts ................................ 66

Geometric Construction ........................ 67

Ellipse Construction .............................. 69

Dividing a Circle into Equal Parts ........... 70

Equal Tee ................................ .............. 71

Alternate Formula for Equal Tee ........... 72

Equal Tee ................................ .............. 73

Unequal Tee ................................ .......... 74

Unequal Tee ................................ .......... 75

Unequal Tee ................................ .......... 77

Another Formula for an Unequal Tee ... 78

Layouts for Equal and Unequal Tees Stem

Portions Only ................................ ........ 80

Another Method for Unequal Tees Stem

Portion ................................ .................. 81

Equal Laterals ................................ ........ 82

Steps for a 45-Degree Equilateral ......... 83

Gore Elbows ................................ .......... 85

Butterfly Gores ................................ ..... 86

Snap-Line Gores ................................ .... 87

Orange Peel Gores ................................ 88

Diameter Method for Orange Peel Gores

................................ .............................. 89

Six Division Method for Orange Peel

Gores ................................ .................... 90

Concentric Reducer ............................... 91

Eccentric Reducers ................................ 92

Square to Square ................................ .. 93

Square to Square Transition ................. 94

Square to Round ................................ ... 95

Alternate for Square to Round .............. 96

Square to Round (Where Round is Larger)

................................ .............................. 97

Square to Round with Single Offset ...... 98

Square to Round with Double Offset .... 99

Square to Round with Double Offset,

Round Outside the Square .................. 100

Round to Square ................................ . 101

Rectangle to Rectangle ....................... 102

Rectangle to Round............................. 103

Oval to Round ................................ ..... 104

Semi Elliptical Head Segments ............ 106

Equal Laterals ................................ ...... 107

Unequal Laterals ................................ . 108

Formula for a 45 degree Conical ......... 111

Another method for a 45-degree conical

................................ ............................ 112

Another Method for a 45-Degree Equal

Lateral ................................ ................. 113

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Formula for an Unequal 45-Degree

Lateral ................................ ................. 114

Concentric Reducer (Equal Cone) ........ 116

Layout for a Cone or Taper ................. 117

Eccentric Reducer or Hognose ............ 118

Conic Reducing Tee at 90-Degrees ...... 119

Extruded Foam Rubber ........................... 121

Extruded Foam Elbows ........................ 122

Long Radius Rubber 90 Degree Elbow. 123

Short Radius Rubber 90 Degree Elbow 124

Equal Reducing Rubber 90 Degree Elbow

................................ ............................ 125

Concentric Extruded Foam Rubber

Reducer ................................ ............... 127

Eccentric Extruded Foam Rubber Reducer

................................ ............................ 128

Measurements ................................ ........ 129

MEASURING COMPLETED INSULATION

METHOD A ................................ .......... 130

MEASURING COMPLETED INSULATION

METHOD B ................................ .......... 131

MEASURING COMPLETED INSULATION

METHOD A ................................ .......... 132

STRAIGHT PIPE ................................ 132

FITTINGS - VALVES .......................... 132

FLANGES ................................ ......... 132

MEASURING COMPLETED INSULATION

METHOD B ................................ .......... 133

Notes: ................................ ............. 133

GENERAL ................................ ......... 133

Measurement Imagery ....................... 134

Gores to A Domed Head ..................... 136