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What is a Piperack

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piping

Text of What is a Piperack

  • Prepared by: Prakash KothakondaCivil Structural

    Jan 2013

    Prepared by: Prakash KothakondaCivil Structural

    Jan 2013

    What is a Piperack

  • Presentation Outline

    Purpose of Presentation

    Types of Piperack Systems

    Construction Materials

    Details of Continuous Piperack System

    Training Module2

  • Purpose of Presentation

    To know what is a Piperack mean

    To understand various components of Piperacks for

    Modeling in PDS etc.,

    How to read the Structural Steel Section / Shape

    Dimensions and Sizes for the shapes which are used in

    Piperack structure for Modeling

    Training Module3

  • A sample Piperack 3D view

    Training Module4

  • Types of Piperack Systems

    Two basic types of structural Piperack systems

    Continuous Piperack system

    A number of 2D frames or bents spaced typically at 20

    tied together in the longitudinal direction with struts and vertical

    bracing to form a 3D space frame arrangement.

    Non continuous Piperack system (Goal Post type)

    Independent freestanding cantilevered 2D frames and anchor bays.

    May be utilized for long uniform runs of product lines, flare or

    tank farm piping usually outside battery limit. Frame spacing may be

    increased up to 40 ft (12m).

    Training Module5

  • Types of Piperack Systems

    Continuous Piperack system EXAMPLE:

    Training Module6

    TRANSVERSE

    BEAMSTRANSVERSE

    BEAMSTRANSVERSE

    BEAMS

    LONGITUDINAL

    BEAM STRUTS

    COLUMNS

    LONGITUDINAL

    BEAM STRUTS

    COLUMNS

    PRECAST

    CONCRETE

    FRAME

    TRANSVERSE ELEVATION

  • Types of Piperack Systems

    Continuous Piperack system EXAMPLE

    Training Module7

    LONGITUDINAL

    BEAM STRUTS

    BENTS BRACED

    BAY

    VERTICAL BRACING

  • Types of Piperack Systems

    Non-Continuous Piperack system EXAMPLE

    Training Module8

    COLUMN

    COLUMN

  • Types of Piperack Systems

    Non-Continuous Piperack system EXAMPLE

    Training Module9

    COLUMNS

    Non-Continuous Piperacks are not common in use

    (except for Flare Lines & Tank Farm Pipelines)

  • Construction Material

    Steel

    Concrete

    (But generally Steel is widely

    used Material for Piperacks)

    Training Module10

  • Design Coordination

    The following should be coordinated by Civil with the

    Plant Design, Electrical, and Control Systems groups

    before the start of detailed design:

    Bent Spacing. Normally 20 for economical design.

    Elevations of support levels.

    Elevation of the longitudinal struts.

    Locations of vertical bracings and braced bays.

    Should be away from pumps and other equipment at

    grade level.

    Minimum Clearance required by applicable codes or

    for maintenance purpose.

    Training Module11

  • Continuous Piperack System COMPONENTS

    Training Module12

    Frames (Bents)

    Transverse Beams

    Longitudinal Beam Struts

    Vertical Bracing

  • Frames

    Training Module13

    Piperack consists of Bents (or) Frames see attached sample

    These Frames (or) Bents are generally spaced at 20 for economical

    design

    KNEE

    BRACE

    COLUMNS

    TRANSVERSE

    BEAMS

  • Transverse Beams

    Training Module14

    Transverse Beams are Main Members (beams) which are directly

    supporting the Pipes & Cable Trays TRANSVERSE BEAMS

  • Longitudinal Beam Struts Longitudinal Beam Struts are side beams tied between to bents or

    frames along the Piperack. These are required to transfer the

    longitudinal pipe forces along the Piperack.

    In the longitudinal direction there should be at least one

    continuous level of beam struts on each side to carry the

    longitudinal forces transmitted through the beam struts to the

    base plate and foundation levels.

    Training Module15

    BENTS (OR)

    FRAMESLONGITUDINAL

    BEAM STRUTS

  • Vertical Bracing

    Vertical bracing is used to transmit the longitudinal forces from

    the beam struts to the foundations. Knee-bracing or K-bracing is

    most often used for this purpose.

    Training Module16

    VERTICAL BRACING

    BENTS (OR)

    FRAMES

    LONGITUDINAL

    BEAM STRUTS

  • Piperack Example

    Training Module17

    PIPES ARE LAYED IN

    VARIOUS LEVELS

  • Structural Steel Shapes commonly used

    Training Module18

    HP

    SHAPES

    W

    SHAPES

    MC & C

    CHANNELS

    WT TEES

    (OR) CUT

    FROM W

    SHAPES

    ANGLESEQUAL LEGS

    (OR) UNEQUAL

    LEGS

  • Structural Steel Shapes & their sizes

    Training Module19

  • Structural Steel Shapes & their sizes

    Training Module20

  • Structural Steel Shapes & their sizes

    Training Module21

  • Structural Steel Shapes & their sizes

    Training Module22

  • Structural Steel Shapes & their sizes

    Training Module23

  • Pipe Bridge Example

    Training Module24

  • Question?

    Training Module25

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