Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 2K views

    Thrust Block Triangular

    Uploaded by

    MUTHUKKUMARAM
    This document provides the design calculations for a thrust block for a water pipeline. It includes the design data such as pipe diameter, soil properties, concrete properties, and pressure parameters. The calculations determine the thrust force, weights of soil and concrete, passive and active soil resistances, and frictional resistance. Stability is checked by comparing the overturning moment to the righting moment, and checking for sliding and bearing pressure. The design is found to be stable and safe based on the calculated safety factors exceeding minimum required values.

    Copyright:

    © All Rights Reserved
    Download as XLS, PDF, TXT or read online from Scribd

    Thrust Block Triangular

    Uploaded by

    MUTHUKKUMARAM
    2K views15 pages
    This document provides the design calculations for a thrust block for a water pipeline. It includes the design data such as pipe diameter, soil properties, concrete properties, and pressure parameters. The calculations determine the thrust force, weights of soil and concrete, passive and active soil resistances, and frictional resistance. Stability is checked by comparing the overturning moment to the righting moment, and checking for sliding and bearing pressure. The design is found to be stable and safe based on the calculated safety factors exceeding minimum required values.

    Original Description:

    Design of thrust block foundation for pipe lines

    Copyright

    © © All Rights Reserved

    Available Formats

    XLS, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    This document provides the design calculations for a thrust block for a water pipeline. It includes the design data such as pipe diameter, soil properties, concrete properties, and pressure parameters. The calculations determine the thrust force, weights of soil and concrete, passive and active soil resistances, and frictional resistance. Stability is checked by comparing the overturning moment to the righting moment, and checking for sliding and bearing pressure. The design is found to be stable and safe based on the calculated safety factors exceeding minimum required values.

    Copyright:

    © All Rights Reserved
    Download as XLS, PDF, TXT or read online from Scribd
    Download as xls, pdf, or txt
    2K views15 pages

    Thrust Block Triangular

    Uploaded by

    MUTHUKKUMARAM
    This document provides the design calculations for a thrust block for a water pipeline. It includes the design data such as pipe diameter, soil properties, concrete properties, and pressure parameters. The calculations determine the thrust force, weights of soil and concrete, passive and active soil resistances, and frictional resistance. Stability is checked by comparing the overturning moment to the righting moment, and checking for sliding and bearing pressure. The design is found to be stable and safe based on the calculated safety factors exceeding minimum required values.

    Copyright:

    © All Rights Reserved
    Download as XLS, PDF, TXT or read online from Scribd
    Download as xls, pdf, or txt
    of 15

    CALCULATION SHEET

    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    1600 mm Dia. Pipe

    KPR

    DATE

    5/17/2006

    SHEET

    1/2

    DESIGN DATA
    Nominal pipe diameter
    Maximum internal pressure

    =
    =

    =
    =

    1.60
    1,600.0

    m
    kN/m2

    D
    p
    h1

    Depth of earth cover

    0.60

    Depth of concrete

    h2

    3.70

    Width of concrete
    Minimum length of the block

    =
    =

    B
    L1

    =
    =

    4.80
    2.70

    m
    m

    Maximum length of the block

    L2

    12.50

    Unit weight of the pipe

    0.000

    kN/m

    Unit weight of the water

    10.00

    kN/m

    Unit weight of filled soil

    18.0

    kN/m3

    Unit weight of submerged soil

    sw

    8.0

    kN/m3

    Unit weight of concrete

    24.0

    kNm3

    Allowable bearing capacity


    Coefficient of soil friction
    Degree of bent
    Angle of internal friction of the soil

    =
    =
    =
    =

    SBC

    =
    =
    =
    =

    100.0
    0.38
    90.0
    30.0

    kN/m2
    o
    o

    CALCULATION
    y=

    L1

    1.8842 m

    L2

    CG

    B
    PLAN
    Centre line of pipe above thrust block

    1.9 m

    h1
    Ws
    P

    Wb

    w1

    h2

    P1
    w2

    Fr

    P2

    Toe

    ELEVATION
    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    800 mm Dia. Pipe - 90o bend

    KPR

    CALCULATION (Cont)
    Case -1 - (Dry Condition)
    Thrust force at Bent, P
    Weight of Soil above block , Ws
    Weight of Concrete block , Wb
    Passive Soil Resistance:
    Passive Earth Coefficient

    Kp

    =
    =
    =
    =
    =
    =

    2*pD2*sin(/2)
    4549.51
    KN
    (1/2 )* (L1+L2)*B*h1*s
    393.984
    KN
    (1/2 )* (L1+L2)*B*h2*c
    3239.424
    KN
    (1 +sin ) / (1 - sin )
    3.00
    32.4
    KN/M2

    w1

    = s h1 kp

    =
    =
    =

    w2

    = s h2 kp

    199.8

    KN/M2

    Pp1

    = w1L2h2

    1498.5

    KN

    Pp2

    1/2 w2L2h2

    4620.375

    KN

    Kp

    w1

    = s h1 ka

    =
    =

    0.33
    3.6

    w2

    = s h2 ka

    22.2

    Pa1

    = w1L2h2

    166.5

    Pa2

    513.375

    Active Earth Coefficient

    1/2 w2L2h2

    Frictional Resitance, Fr

    =
    =

    (1 -sin ) / (1 + sin )

    (Ws + Wb) *
    1380.69504 KN

    Stability Check
    a)
    Overturning ( Summation of moments about the toe)
    (Ws +Wb)*y + Pp1(h2/2) + Pp2*(h2/3)
    Righting Moment, RM
    =

    b)

    c)

    Overturning Moment, OM

    15316.79
    kNm
    P*(h)+ Pa1(h2/2) + Pa2*(h2/3)
    9357.78 kNm

    Safety Factor,

    RM/OM

    1.64

    (Fr + P1+P2)/P

    Sliding
    Sliding Factor,

    SF1

    SF2

    >

    1.5

    =
    1.434
    >
    1.4
    Check for Bearing Pressure (Active and passive pressure ignored conservatively)
    Righting Moment, RM
    =
    (Ws +Wb)*y
    =
    6846.11
    KN m
    Overturning Moment, OM
    P*(h)

    8416.60
    KN m

    CG of resultant
    =
    RM - OM
    =
    -0.432
    (Ws + Wb)
    CG lies in Middle Third
    M/Z =
    =

    -1570.492 /

    21

    -75.89 kN/m2

    SAFE

    SAFE

    SAFE

    Actual Bearing Pressure =

    W/A

    M/Z

    qL

    99.6

    75.9

    175.5

    KN/M2

    Ok

    qR

    99.6

    75.9

    23.7

    KN/M2

    Ok

    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    DATE

    5/17/2006

    SHEET

    2/2

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    1600 mm Dia. Pipe

    KPR

    DATE

    5/17/2006

    SHEET

    1/2

    DESIGN DATA
    Nominal pipe diameter
    Maximum internal pressure

    =
    =

    =
    =

    1.60
    1,600.0

    m
    kN/m2

    D
    p
    h1

    Depth of earth cover

    0.60

    Depth of concrete

    h2

    3.20

    Width of concrete
    Minimum length of the block

    =
    =

    B
    L1

    =
    =

    4.10
    2.10

    m
    m

    Maximum length of the block

    L2

    8.50

    Unit weight of the pipe

    0.000

    kN/m

    Unit weight of the water

    10.00

    kN/m

    Unit weight of filled soil

    18.0

    kN/m3

    Unit weight of submerged soil

    sw

    8.0

    kN/m3

    Unit weight of concrete

    24.0

    kNm3

    Allowable bearing capacity


    Coefficient of soil friction
    Degree of bent
    Angle of internal friction of the soil

    =
    =
    =
    =

    SBC

    =
    =
    =
    =

    100.0
    0.38
    45.0
    30.0

    kN/m2
    o
    o

    CALCULATION
    y=

    L1

    1.6374 m

    L2

    CG

    B
    PLAN
    Centre line of pipe above thrust block

    1.6 m

    h1
    Ws
    P

    Wb

    Fr

    w1

    h2
    Toe

    P1
    w2

    P2

    ELEVATION
    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    800 mm Dia. Pipe - 90o bend

    KPR

    CALCULATION (Cont)
    Case -1 - (Dry Condition)
    Thrust force at Bent, P
    Weight of Soil above block , Ws
    Weight of Concrete block , Wb
    Passive Soil Resistance:
    Passive Earth Coefficient

    Kp

    =
    =
    =
    =
    =
    =

    2*pD2*sin(/2)
    2462.18
    KN
    (1/2 )* (L1+L2)*B*h1*s
    234.684
    KN
    (1/2 )* (L1+L2)*B*h2*c
    1668.864
    KN
    (1 +sin ) / (1 - sin )
    3.00
    32.4
    KN/M2

    w1

    = s h1 kp

    =
    =
    =

    w2

    = s h2 kp

    172.8

    KN/M2

    Pp1

    = w1L2h2

    881.28

    KN

    Pp2

    1/2 w2L2h2

    2350.08

    KN

    Kp

    w1

    = s h1 ka

    =
    =

    0.33
    3.6

    w2

    = s h2 ka

    19.2

    Pa1

    = w1L2h2

    97.92

    Pa2

    261.12

    Active Earth Coefficient

    1/2 w2L2h2

    Frictional Resitance, Fr

    =
    =

    (1 -sin ) / (1 + sin )

    (Ws + Wb) *
    723.34824 KN

    Stability Check
    a)
    Overturning ( Summation of moments about the toe)
    (Ws +Wb)*y + Pp1(h2/2) + Pp2*(h2/3)
    Righting Moment, RM
    =

    b)

    c)

    Overturning Moment, OM

    7033.71
    kNm
    P*(h)+ Pa1(h2/2) + Pa2*(h2/3)
    4374.69 kNm

    Safety Factor,

    RM/OM

    1.61

    (Fr + P1+P2)/P

    Sliding
    Sliding Factor,

    SF1

    SF2

    >

    1.5

    =
    1.402
    >
    1.4
    Check for Bearing Pressure (Active and passive pressure ignored conservatively)
    Righting Moment, RM
    =
    (Ws +Wb)*y
    =
    3116.91
    KN m
    Overturning Moment, OM
    P*(h)

    3939.49
    KN m

    CG of resultant
    =
    RM - OM
    =
    -0.432
    (Ws + Wb)
    CG lies in Middle Third
    M/Z =
    =

    -822.575 /

    11

    -75.75 kN/m2

    SAFE

    SAFE

    SAFE

    Actual Bearing Pressure =

    W/A

    M/Z

    qL

    87.6

    75.8

    163.4

    KN/M2

    Ok

    qR

    87.6

    75.8

    11.8

    KN/M2

    Ok

    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    DATE

    5/17/2006

    SHEET

    2/2

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    1600 mm Dia. Pipe

    KPR

    DATE

    5/17/2006

    SHEET

    1/2

    DESIGN DATA
    Nominal pipe diameter
    Maximum internal pressure

    =
    =

    =
    =

    1.60
    1,600.0

    m
    kN/m2

    D
    p
    h1

    Depth of earth cover

    0.60

    Depth of concrete

    h2

    2.70

    Width of concrete
    Minimum length of the block

    =
    =

    B
    L1

    =
    =

    3.40
    1.50

    m
    m

    Maximum length of the block

    L2

    6.00

    Unit weight of the pipe

    0.000

    kN/m

    Unit weight of the water

    10.00

    kN/m

    Unit weight of filled soil

    18.0

    kN/m3

    Unit weight of submerged soil

    sw

    8.0

    kN/m3

    Unit weight of concrete

    24.0

    kNm3

    Allowable bearing capacity


    Coefficient of soil friction
    Degree of bent
    Angle of internal friction of the soil

    =
    =
    =
    =

    SBC

    =
    =
    =
    =

    100.0
    0.38
    22.5
    30.0

    kN/m2
    o
    o

    CALCULATION
    y=

    L1

    1.36 m

    L2

    CG

    B
    PLAN
    Centre line of pipe above thrust block

    1.4 m

    h1
    Ws
    P

    Wb

    Fr

    w1

    h2
    Toe

    P1
    w2

    P2

    ELEVATION
    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    800 mm Dia. Pipe - 90o bend

    KPR

    CALCULATION (Cont)
    Case -1 - (Dry Condition)
    Thrust force at Bent, P
    Weight of Soil above block , Ws
    Weight of Concrete block , Wb
    Passive Soil Resistance:
    Passive Earth Coefficient

    Kp

    =
    =
    =
    =
    =
    =

    2*pD2*sin(/2)
    1255.21
    KN
    (1/2 )* (L1+L2)*B*h1*s
    137.7
    KN
    (1/2 )* (L1+L2)*B*h2*c
    826.2
    KN
    (1 +sin ) / (1 - sin )
    3.00
    32.4
    KN/M2

    w1

    = s h1 kp

    =
    =
    =

    w2

    = s h2 kp

    145.8

    KN/M2

    Pp1

    = w1L2h2

    524.88

    KN

    Pp2

    1/2 w2L2h2

    1180.98

    KN

    Kp

    w1

    = s h1 ka

    =
    =

    0.33
    3.6

    w2

    = s h2 ka

    16.2

    Pa1

    = w1L2h2

    58.32

    Pa2

    131.22

    Active Earth Coefficient

    1/2 w2L2h2

    Frictional Resitance, Fr

    =
    =

    (1 -sin ) / (1 + sin )

    (Ws + Wb) *
    366.282
    KN

    Stability Check
    a)
    Overturning ( Summation of moments about the toe)
    (Ws +Wb)*y + Pp1(h2/2) + Pp2*(h2/3)
    Righting Moment, RM
    =

    b)

    c)

    Overturning Moment, OM

    3082.37
    kNm
    P*(h)+ Pa1(h2/2) + Pa2*(h2/3)
    1891.36 kNm

    Safety Factor,

    RM/OM

    1.63

    (Fr + P1+P2)/P

    Sliding
    Sliding Factor,

    SF1

    SF2

    >

    1.5

    =
    1.434
    >
    1.4
    Check for Bearing Pressure (Active and passive pressure ignored conservatively)
    Righting Moment, RM
    =
    (Ws +Wb)*y
    =
    1310.90
    KN m
    Overturning Moment, OM
    P*(h)

    1694.53
    KN m

    CG of resultant
    =
    RM - OM
    =
    -0.398
    (Ws + Wb)
    CG lies in Middle Third
    M/Z =
    =

    -383.626 /

    5.3

    -72.41 kN/m2

    SAFE

    SAFE

    SAFE

    Actual Bearing Pressure =

    W/A

    M/Z

    qL

    75.6

    72.4

    148.0

    KN/M2

    Ok

    qR

    75.6

    72.4

    3.2

    KN/M2

    Ok

    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    DATE

    5/17/2006

    SHEET

    2/2

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    1600 mm Dia. Pipe

    KPR

    DATE

    5/17/2006

    SHEET

    1/2

    DESIGN DATA
    Nominal pipe diameter
    Maximum internal pressure

    =
    =

    =
    =

    1.60
    1,600.0

    m
    kN/m2

    D
    p
    h1

    Depth of earth cover

    0.60

    Depth of concrete

    h2

    2.10

    Width of concrete
    Minimum length of the block

    =
    =

    B
    L1

    =
    =

    2.80
    1.00

    m
    m

    Maximum length of the block

    L2

    4.50

    Unit weight of the pipe

    0.000

    kN/m

    Unit weight of the water

    10.00

    kN/m

    Unit weight of filled soil

    18.0

    kN/m3

    Unit weight of submerged soil

    sw

    8.0

    kN/m3

    Unit weight of concrete

    24.0

    kNm3

    Allowable bearing capacity


    Coefficient of soil friction
    Degree of bent
    Angle of internal friction of the soil

    =
    =
    =
    =

    SBC

    =
    =
    =
    =

    100.0
    0.38
    11.25
    30.0

    kN/m2
    o
    o

    CALCULATION
    y=

    L1

    1.103 m

    L2

    CG

    B
    PLAN
    Centre line of pipe above thrust block

    1.1 m

    h1
    Ws
    P

    Wb

    Fr

    w1

    h2
    Toe

    P1
    w2

    P2

    ELEVATION
    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    800 mm Dia. Pipe - 90o bend

    KPR

    CALCULATION (Cont)
    Case -1 - (Dry Condition)
    Thrust force at Bent, P
    Weight of Soil above block , Ws
    Weight of Concrete block , Wb
    Passive Soil Resistance:
    Passive Earth Coefficient

    Kp

    =
    =
    =
    =
    =
    =

    2*pD2*sin(/2)
    630.64
    KN
    (1/2 )* (L1+L2)*B*h1*s
    83.16
    KN
    (1/2 )* (L1+L2)*B*h2*c
    388.08
    KN
    (1 +sin ) / (1 - sin )
    3.00
    32.4
    KN/M2

    w1

    = s h1 kp

    =
    =
    =

    w2

    = s h2 kp

    113.4

    Pp1

    = w1L2h2

    306.18

    KN

    Pp2

    1/2 w2L2h2

    535.815

    KN

    Kp

    w1

    = s h1 ka

    =
    =

    0.33
    3.6

    w2

    = s h2 ka

    12.6

    Pa1

    = w1L2h2

    34.02

    Pa2

    59.535

    Active Earth Coefficient

    1/2 w2L2h2

    Frictional Resitance, Fr

    =
    =

    KN/M2

    (1 -sin ) / (1 + sin )

    (Ws + Wb) *
    179.0712
    KN

    Stability Check
    a)
    Overturning ( Summation of moments about the toe)
    (Ws +Wb)*y + Pp1(h2/2) + Pp2*(h2/3)
    Righting Moment, RM
    =

    b)

    c)

    Overturning Moment, OM

    1216.35
    kNm
    P*(h)+ Pa1(h2/2) + Pa2*(h2/3)
    739.57 kNm

    Safety Factor,

    RM/OM

    1.64

    (Fr + P1+P2)/P

    Sliding
    Sliding Factor,

    SF1

    SF2

    >

    1.5

    =
    1.410
    >
    1.4
    Check for Bearing Pressure (Active and passive pressure ignored conservatively)
    Righting Moment, RM
    =
    (Ws +Wb)*y
    =
    519.79
    KN m
    Overturning Moment, OM
    P*(h)

    662.17
    KN m

    CG of resultant
    =
    RM - OM
    =
    -0.302
    (Ws + Wb)
    CG lies in Middle Third
    M/Z =
    =

    -142.381 /

    2.56

    -55.52 kN/m2

    SAFE

    SAFE

    SAFE

    Actual Bearing Pressure =

    W/A

    M/Z

    qL

    61.2

    55.5

    116.7

    KN/M2

    Ok

    qR

    61.2

    55.5

    5.7

    KN/M2

    Ok

    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    DATE

    5/17/2006

    SHEET

    2/2

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    1600 mm Dia. Pipe - TEE

    KPR

    DATE

    5/17/2006

    SHEET

    1/2

    DESIGN DATA
    Nominal pipe diameter
    Maximum internal pressure

    =
    =

    =
    =

    1.60
    1,600.0

    m
    kN/m2

    D
    p
    h1

    Depth of earth cover

    0.60

    Depth of concrete

    h2

    3.40

    Width of concrete
    Minimum length of the block

    =
    =

    B
    L1

    =
    =

    4.50
    2.00

    m
    m

    Maximum length of the block

    L2

    10.00

    Unit weight of the pipe

    0.000

    kN/m

    Unit weight of the water

    10.00

    kN/m

    Unit weight of filled soil

    18.0

    kN/m3

    Unit weight of submerged soil

    sw

    8.0

    kN/m3

    Unit weight of concrete

    24.0

    kNm3

    Allowable bearing capacity


    Coefficient of soil friction
    Degree of bent
    Angle of internal friction of the soil

    =
    =
    =
    =

    SBC

    =
    =
    =
    =

    100.0
    0.38

    kN/m2

    30.0

    CALCULATION
    y=

    L1

    1.75 m

    L2

    CG

    B
    PLAN
    Centre line of pipe above thrust block

    1.7 m

    h1
    Ws
    P

    Wb

    Fr

    w1

    h2
    Toe

    P1
    w2

    P2

    ELEVATION
    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    CALCULATION SHEET
    TITLE

    N 4028

    JOB No.

    DESIGN CALCULATION FOR THE THRUST BLOCK

    ORIG.

    CHECK

    APPD.

    800 mm Dia. Pipe - 90o bend

    KPR

    CALCULATION (Cont)
    Case -1 - (Dry Condition)
    Thrust force at Bent, P
    Weight of Soil above block , Ws
    Weight of Concrete block , Wb
    Passive Soil Resistance:
    Passive Earth Coefficient

    Kp

    =
    =
    =
    =
    =
    =

    pD2
    3216.99
    KN
    (1/2 )* (L1+L2)*B*h1*s
    291.6
    KN
    (1/2 )* (L1+L2)*B*h2*c
    2203.2
    KN
    (1 +sin ) / (1 - sin )
    3.00
    32.4
    KN/M2

    w1

    = s h1 kp

    =
    =
    =

    w2

    = s h2 kp

    183.6

    KN/M2

    Pp1

    = w1L2h2

    1101.6

    KN

    Pp2

    1/2 w2L2h2

    3121.2

    KN

    Ka

    w1

    = s h1 ka

    =
    =

    0.33
    3.6

    w2

    = s h2 ka

    20.4

    Pa1

    = w1L2h2

    122.4

    Pa2

    346.8

    Active Earth Coefficient

    1/2 w2L2h2

    Frictional Resitance, Fr

    =
    =

    (1 -sin ) / (1 + sin )

    (Ws + Wb) *
    948.024
    KN

    Stability Check
    a)
    Overturning ( Summation of moments about the toe)
    (Ws +Wb)*y + Pp1(h2/2) + Pp2*(h2/3)
    Righting Moment, RM
    =

    b)

    c)

    Overturning Moment, OM

    9775.98
    kNm
    P*(h)+ Pa1(h2/2) + Pa2*(h2/3)
    6070.00 kNm

    Safety Factor,

    RM/OM

    1.61

    (Fr + P1+P2)/P

    Sliding
    Sliding Factor,

    SF1

    SF2

    >

    1.5

    =
    1.403
    >
    1.4
    Check for Bearing Pressure (Active and passive pressure ignored conservatively)
    Righting Moment, RM
    =
    (Ws +Wb)*y
    =
    4365.90
    KN m
    Overturning Moment, OM
    P*(h)

    5468.88
    KN m

    CG of resultant
    =
    RM - OM
    =
    -0.442
    (Ws + Wb)
    CG lies in Middle Third
    M/Z =
    =

    -1102.984 /

    14

    -78.15 kN/m2

    SAFE

    SAFE

    SAFE

    Actual Bearing Pressure =

    W/A

    M/Z

    qL

    92.4

    78.2

    170.6

    KN/M2

    Ok

    qR

    92.4

    78.2

    14.2

    KN/M2

    Ok

    PROJECT

    WATER PIPELINE FROM FWPS TO JAZIRAT

    CLIENT

    ADWEA

    DOCUMENT No.

    PEC/4028/00202006

    DATE

    5/17/2006

    SHEET

    2/2

    You might also like