BuriedPipe.xls

Buried Pipe Calculation Report

Input Data General Information

Title Date

Name Report Name

Piping Dimensions

Pipe Diameter 508 mm

Nominal Pipe Thickness 8.7 mm

Sum of Allowance 0 mm

Material

Specified Min Yield Strength 358.52 Mpa

Ultimate Stress 500 MPa

Weld Joint Factor 1

-Design factor 0.72

-Pipe Modulus of Elasticity 203000 Mpa

Poisson's Effect 0.3

-Thermal Expansion Coefficient 0.0000117

Lining Thickness 2 mm

Coating Thickness 3 mm

Lining Modulus of Elasticity 100000 MPa

Coating Modulus of Elasticity 125000 MPa

Lining/ Coating Mortar-Lined and Coated

Design Condition

Max. Design Temp. 76.7 °C

Installation Temp. 10 °C

Design Pressure 8273.7 Kpa(g)

Longitudinal Stress Resulting from SUS Loads

SL 2.52E+03 MPa

Bending Moment due to Weight N/A KN.m

N/A

-Axial Load 0 KN

Longitudinal Stress Resulting from OCC Loads

SL 0.00E+00 MPa

Bending Moment due to Weight N/A KN

Thermal Stress for Unrestrained System

SE 0 MPa

Analysis Settings

Elastic Stability Safe Factor 3

-N/A

-Impact Factor for Live Load N/A

-Impact Factor 1.5

Bedding Constant 0.1

-Deflection Lag Factor 1.5

-Failure Theory Max Shear Stress

Not Design for Engineering Practice (See Notes bellow Report)

mm/mm°c

Component SIF in Plane of Loading

Soil Properties

Dry Backfill Density 2002.3 kg/m3

Water Density 1000 kg/m3

Modulus of Soil Reaction 3000 Psi

Dead Load

Concentrated Surface Load 50 KN

Height of Fill 1.2192 m

Height of Water 0.5 m

Offset Distance 1 m

Live Load

Height of Cover (for Live )Load 1 ft

Live Load 12.5 Psi

Height of Cover (for Impact Factor) 0-1 ft

Live Load Case "Highway"

Results

Stress Source Stress Type Stress Allowable

Mpa MPa

Hoop Stress 241.55 258.13 0.72.E.Sy

Hoop Stress 3.41 258.13 0.72.E.Sy

EXP (Thermal) Longitudinal 158.42 322.67 0.9.Sy

EXP (Thermal) Longitudinal 0 -2047.63

SUS+P(υ)+EXP (SL) Longitudinal _{2607.95 322.67} 0.9.Sy

SUS+P (SL) Longitudinal 2642.78 268.89 0.75.Sy

SUS+P(υ)+EXP+OCC Longitudinal 2607.95 322.67 0.9.Sy

SUS+P+OCC Longitudinal _{2642.78 286.82} 0.8.Sy

Combined 2849.51 322.67 0.9.Sy

Eff. Combined 324.1 322.67 0.9.Sy

Eff. Combined 117.37 322.67 0.9.Sy

Elastic Stability 0.12 0.75 Note (3)

SUS+P(υ)+EXP 2607.95 434.57 Note (3)

124.06 179.26 0.5.Sy

Ring Buckling 0.12 1.35 Note (3)

Source Lining Coating

mm mm

Ovality Mortar-Lined and Coated 4.5319 10.16

Warning:

Notes:

1. Res and Unres stand for Restrained and Unrestrained systems respectively.

Code Allowable P_in P_ext S_A (2) SUS+P+EXP (6) EXP+P_in+P_ext-Road (7) EXP+P_in+P_ext-Road(7) P_ext

Longitudinal Local Shell Buckling

P_ext Circumferential _{Through_Wall} P_ext

3. Refer to Appendix A of ALA.

4. It is checked only in restrained system. User can check it in unrestrained system. 5. ΔY is defined as ovality.

Disclaimers

4. This sheet content may change without any prior notice.

5. Users are highly appreciated if they let CALCSTRESS know any problems or mistakes in the application. 6. User’s knowledge about the proper valid range of inputs and the methods limitations is necessary.

2. For calculation of SA, please refer to 403.3.2 of B31.4-2012. Temperature ranges for restrained and unrestrained systems are based on what is mentioned in 402.5.1 and 402.5.2 of B31.4-2012 respectively. All allowable stresses must be less than Ultimate stress (SU). For unrestrained system: SA=f(1.25*(Sc+Sh)-SL), here it is assumed that f=1, Sc=Sh=2/3SY.

6. In combined stress calculation, it is assumed that SL=|Fa|-|νS_H|+|M/z|+|F_A/A|. If it fails, user can check the combined stress by correct sign of stress of |FA/A|.

7. In effective stress calculation for a pipe at road (Table 403.3.1-1 B31.4-20012), longitudinal expansion stress, longitudinal and circumferential hoop stresses resulting from internal pressure and circumferential hoop stresses due to external pressure are combined to reach an equivalent stress.

1. The calculated stresses in this sheet may not encompass all analyses which are required in a real engineering practice. For instance, buoyancy, earthquake, landslide, mine subsidence analysis have not been considered. Moreover some buried pipe analysis such as a unrestrained part of a buried pipe needs to be analyzed by a finite element methods.

2. The formula and methods which are used in this calculation sheet are based on those mentioned in the technical papers on the

WWW.CALCSTRESS.COM website.User must be aware of the applied method's restrictions.

3. The owners of CALCSTRESS.COM cannot guarantee the completeness and accuracy of any information including formula and methods applied and used in this datasheet. It has been designed for training only. It may not be complete enough for a professional service. So, it must not be used

for any professional services. CALCSTRESS IS NOT RESPONSIBLE FOR ANY DAMAGES, OMISSIONS AND ERRORS ARISING FROM

Buried Pipe Calculation Report

General Information

Piping Dimensions

Material

Mortar-Lined and Coated Design Condition

Longitudinal Stress Resulting from SUS Loads

Longitudinal Stress Resulting from OCC Loads

Thermal Stress for Unrestrained System

Analysis Settings

Code: B31.4-2012 American Lifeline Alliance

Soil Properties Dead Load Live Load Accept. Ref Pass Res/Unres B31.4-2012 Pass Res/Unres B31.4-2013 Pass Res. B31.4-2014 Failed Unres. B31.4-2015 Failed Res. B31.4-2016 Failed Unres. B31.4-2017 Failed Res. B31.4-2018 Failed Unres. B31.4-2019 Failed Res. B31.4-2020 Failed Res. B31.4-2021 Pass Unres. B31.4-2021

Pass Res/Unres ALA

Failed ALA

Pass Res/Unres ALA

Pass Res/Unres ALA

Accept. Ref

Pass Res/Unres ALA

1. Res and Unres stand for Restrained and Unrestrained systems respectively.

System(1)

Res. 4

3. Refer to Appendix A of ALA.

4. It is checked only in restrained system. User can check it in unrestrained system. 5. ΔY is defined as ovality.

Disclaimers

4. This sheet content may change without any prior notice.

5. Users are highly appreciated if they let CALCSTRESS know any problems or mistakes in the application. 6. User’s knowledge about the proper valid range of inputs and the methods limitations is necessary.

2. For calculation of SA, please refer to 403.3.2 of B31.4-2012. Temperature ranges for restrained and unrestrained systems are based on what is mentioned in 402.5.1 and 402.5.2 of B31.4-2012 respectively. All allowable stresses must be less than Ultimate stress (SU). For unrestrained system:

/A|. If it fails, user can check the combined stress by correct sign of

7. In effective stress calculation for a pipe at road (Table 403.3.1-1 B31.4-20012), longitudinal expansion stress, longitudinal and circumferential hoop stresses resulting from internal pressure and circumferential hoop stresses due to external pressure are combined to reach an equivalent stress.

1. The calculated stresses in this sheet may not encompass all analyses which are required in a real engineering practice. For instance, buoyancy, earthquake, landslide, mine subsidence analysis have not been considered. Moreover some buried pipe analysis such as a unrestrained part of a 2. The formula and methods which are used in this calculation sheet are based on those mentioned in the technical papers on the

User must be aware of the applied method's restrictions.

3. The owners of CALCSTRESS.COM cannot guarantee the completeness and accuracy of any information including formula and methods applied and used in this datasheet. It has been designed for training only. It may not be complete enough for a professional service. So, it must not be used

Buried Pipe Calculation Report

Practice (See Notes bellow Report) Code: B31.4-2012 American Lifeline Alliance

0 2 4 6 8 10 12 0 2 4 6 8 10 12

Title 1

Code: B31.4-2012 American Lifeline Alliance

0 2 4 6 8 10 12 0 2 4 6 8 10 12

Title 1