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CAESAR II Users Guide

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CAESAR II
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CAESAR II Version
12

Specifies the cold stress value. Typically, this is the cold allowable stress for the specific material taken directly from the governing piping code. CAESAR II fills this box automatically after you select the material and piping code. The value of SC is usually divided by the longitudinal weld efficiency (Eff) before being used.

Typical units (depending on your unit system):

  • lb/in2

  • KPa

  • N/mm²

See the notes that follow for your selected piping code.

B31.1

Allowable stress tables in Appendix A include the longitudinal weld joint efficiencies where applicable. Do not use these efficiencies for flexibility stress calculations. If the joint efficiency (Eff) is given on this dialog box, then CAESAR II divides the SC by the joint efficiency before using it in the allowable stress equations.

B31.3, B31.3 Chapter IX

Values from tables in Appendix A do not include the joint efficiency. The Eff value should be zero, blank, or one. The 1980 version of B31.3 included the longitudinal weld joint efficiencies as part of the tables in Appendix A. If you are using this version of the code, then you should type a value for Eff in the appropriate box on this dialog box.

B31.4, B31.4 Chapter IX, B31.4 Chapter XI

Not used. The only stress value in B31.4 is the yield stress taken from Table 1 in the appendix. For more information, see Sy.

B31.5

Values from tables in Appendix A do not include the joint efficiency. The value of Eff should be zero, blank, or one.

B31.8

Su, the specified minimum ultimate tensile strength.

B31.8 Chapter VIII

Not used. The only stress value in B31.8 is the yield stress taken from Appendix D. For more information, see Sy.

B31.9

SC is taken directly from I-1. If you define a value for Eff, the software only uses it in the minimum wall thickness check.

ASME NC and ND

SC is taken directly from Appendix I. If you define a value for Eff, the software ignores it.

Navy 505

There is no mention of joint efficiency in the 505 specification; however, it is implied in Footnote 1 of Table TIIA. If a joint efficiency is given, then CAESAR II divides SC by the joint efficiency before using it in the allowable stress equations. Eff should be zero, blank, or one.

CAN Z662

Not used. The only stress value in Z184 is the yield stress specified in the standards or specification under which the pipe was purchased. For more information, see Sy.

BS 806

0.2% of the proof stress at room temperature from Appendix E. Eff is not used in BS 806. If you define a value for Eff, the software ignores it.

Swedish Method 1

Not used. Method 1 only uses the yield or creep rupture stress at temperature (SHn and Fn respectively on this dialog box). Eff is used but is the circumferential weld joint efficiency and has a different meaning.

Swedish Method 2

SC is the allowable stress at room temperature from Appendix 2. Eff is not used. If you define a value for Eff, the software ignores it.

B31.1 (1967)

SC is the allowable stress at room temperature from the tables in Appendix A. These tables include the longitudinal weld joint efficiencies where applicable. Do not use these efficiencies for flexibility stress calculations. If you define a value for Eff, then CAESAR II divides the SC by the joint efficiency before using it in the allowable stress equations.

Stoomwezen (1989)

SC is the yield stress at room temperature. This value is referred to as Re in the code.

RCC-M C, D

SC is taken from the Appendix. Eff is not used. If you define a value for Eff, the software ignores it.

CODETI

This is famb from the code. Eff is not used. If you define a value for Eff, the software ignores it.

Norwegian

This is f1 from the code. Eff is not used for longitudinal joint efficiency.

BS 7159

Not used. Design stress is typed in the SH boxes.

UKOO

Not used. Design stress (in the hoop direction) is typed in the SH boxes.

IGE/TD/1

Not used.

DNV

Not used.

EN-13480

SC is the basic allowable stress at minimum metal temperature as defined in Section 12.1.3.

GPTC/Z380

Not used.

PD 8010-1

Not used.

PD 8010-2

Not used.

ISO 14692

SC is used in a different way. See reference for ISO 14692.

HPGSL

Not used.

JPI

Not used.