Steel Roof Truss Design

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    Steel Roof Truss Design

    By : 1.Husain Nur Zharfan F (141144013)  2. Kiki Setiawan (141144017)

      3. Kreshna !h"a# $ (141144017)

      4. %irna $urna"a S (14114401&)

      '. *i +u"e,ar (14114402&)

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    DefinitonDefiniton

    Pratt Truss is A type of truss with parallelchords, all vertical members incompression, and all diagonal members in

    tension. The diagonals slant toward thecenter.

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    %iss!e,,aneus -ata

    +e"etri! Stru!ture

    %ateria,

    a#s (/ye "*inatin)

    Stru!ture a,uatin

    Contents

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    Geometric Structure

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    5 m

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    Material

    MaterialSNI 03-1729-2002

    Mechanical properties of steel :

    •Modulus of ElasticityE ! 200000 M"a

    •Shear Modulus

    # ! $0000 M"a

    •"oisson%s &atio' ! 0(3

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    Table of Mechanical Propertiesof Structural Steel

    S)*&+E: SNI 03-1729-2002

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    rame Section

    .50.50.7

    2.'0.'0.'

    .60.60.6

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    ,he load that used on this calculation of this roof truss

    consist of :

    ead .oad /.

    Super ead .oad /S.

    .i'e .oad /..

    ind .oad /

    &ain .oad /.r

    Type of !oad

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    !oad Combination

    *! 12 1 S./+o45o 1

    *! 12 06 . 12 S./+o45o 2

    *! 12 0$ 12 S. 1 . /+o45o 3*! 12 13 12 S. 06 . /+o45o

    *! +o45 1 +o45 2 +o45 3 +o45 /En'elope

    ! ead .oad. ! .ife .oad

    S. ! Super I4posed ead .oad

    ! ind

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    !oad of Structure

    • Dead Load

    • Superimposed Dead Load

     – Plafond – Roof 

    • Wind Load

     – Pressure Wind

     – Suction Wind

    • Live Load

     – worker 

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    Superimposed "ead !oad#Plafond$

    ata istance 5et8een truss ! 6 4 Epanse distance /. ! 19 4

    eiht of "lafond +o4ponent ! 1$ ;

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    Superimposed "ead !oad#%oof$

    ata istance 5et8een truss ! 6 4 istance /o5li@ue ! 1031 4

    eiht of &oof +o4ponent ! 60 ;

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    Superimposed "ead !oad#Plafond & %oof$

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    'ind !oad #Press 'ind$

    ata istance 5et8een truss ! 6 4 istance /o5li@ue ! 1031 4

    eiht of ind ! 26 ;

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    ata istance 5et8een truss ! 4 istance /o5li@ue ! 1031 4

    eiht of ind ! 26 ;

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    'ind !oad

    Pressure Wind and Suction Wind

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    !ive !oad

    eiht "er ?oint ?oint ! 100 ;

    ,his .oad Bssin to 2 Coint in 4iddle truss

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    STRUCTURE EVALUATION 

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    Capacity %atio & Misscellaneous"ata

    • Ma( eflection : -1$$$9 44 D 61 44• ,otal eiht : 12$199 ;

    • ,otal +ost : &p1(090($90

    1. 2L.50.50.5

    2. L.60.60.6

    3. L.90.90.7

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    (ase %eactions#)nvelope$

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    A*ial orce#)nvelope$

    N 44 +

    58

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    Shear orce#)nvelope$

    N 44 +

    ! "

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    Moment#)nvelope$

    N 44 +

    !

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    "eformed Shape#)nvelope$

    N 44 +

    #

    .endutan yan terCadi D .endutan yan diiCinan  -1$$$$7 44 D 61 44 );F

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    Total 'eight & Cost

    • ,otal Ara4e : 37 fra4es• ,otal eiht : 2$01 ;• ,otal +ost : &p9(1(110

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    i* %oof Truss "esign

    • 2.60(60(6 ! 20• .0(0( ! 10• .90(90(7 ! 7

    ,otal ! 37 Ara4es

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    $ttp%&&www'dictionar(ofconstruction'com&definition&pratt)truss'$tml

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