dulles airport 04

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    The Dulles International Airport is often described as a monument, a

    “Platonic ideal of an airport” . Yet it lacks the neo-Roman, staticmonumentality of the Federal architectural tradition. Its monumentality is one

    appropriate for the technological age. It is a symbol of the future, designed at a

    time when jet travel was still a fresh, exciting concept.

    ARCH 513 (Fall 2004)

    SEMINAR:

    ADVANCED STRUCTURESProf. G. Schierle

    Sumit B. and V.K.S. Namburi

    Term Project

     DULLES INTERNATIONAL

     AIRPORT, WASHINGTON.

    (1958-1962) by Eero Saarinen

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    SOME VIEWS

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    SOME VIEWS

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    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

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    AN ISOMETRIC

    VIEW OF

    PROPOSED

    STRUCTURE(N.T.SCALE)

     After reviewing the present status andarchitecture of the building, we tried to

    evolve new structre, keeping most of thedesign rationals and architects pholosophy.

    One of the major problem the structure is

    facing presently is of rain water drainage.Sometimes roof leaks and creats mess incertain areas.

     Apart from that the overall structure is a

    very good example of archtectural synergyintegrating form, and functions with

    innovative structure.

    We had tried to change the roofing system,

    with keeping overall design almost same.

    PROPOSED STRUCTURE

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    150’ x 600’ IS OVERALL SIZE OF THE STRUCTURE.

    15 BAYS, EACH OF 40’

    SUSPENSION CABLES, SPACED AT 40’

    SPAN L = 150’

     ALLOWABLE CABLE STRESS Fa = Fy/3Fa = 70ksi

    MAXIMUM SAG AT THE CENTRE f = 10’  f = 15’

    L.L. = 12 psf 

    D.L. = 38 psf 

     ____________   = 50 psf 

    NOW DESIGNING SUSPENSION CABLE.

    UNIFORM CABLE LOAD w (klf)

    w = 40 x 50/1000 = 2.0klf w = 2.0klf 

    GLOBAL MOMENT M

    M = WL²/ 8

      = 2.0 x 150²/8

      =5625k’M = 5625k’

    HORIZONTAL REACTION H

    H = M/f 

      = 5625/15

      = 375.0kH = 375.0k

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    VERTICAL REACTION R

    R = Wl/2  =2.0 x 150 / 2

      = 150 kR = 150k

    CABAL TENSION (MAXIMUM T)

    T = (H² + R² )½

      = ( 375.0² + 150² ) ½  = 404k

    T = 404k

    METALIC CROSS SECTION AREA REQUIRED Am

     Am = T/ Fa  = 404 / 70

      = 5.77 in²Am = 5.77 in ²

    GROSS CROSS SETION (Ag 70% METALLIC)

     Ag = Am / 0.70

      = 5.77 / 0.70  = 8.20 in²

    Ag = 8.20 in²

    CABLE SIZE ø (inch)

    Ø = 2 (Ag/3.14) ½  = 2 (8.20 / 3.14) ½

      = 3.2 in²

    Ø = 3 1/4 in

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    STATIC MODEL Assume:

    Fising Line as model “cables”

    main cable fishing line is having 0.0625” diaAm = 0.0031 in²

    and

    secondary tieing fishing line used for is having0.012” dia (area 0.00011 sq. in)

    Geometric scale Sg = 1: 48

    Strain scale Ss = 1 (due to large deflections)

    Original strand Eo = 24,000ksi

    Fishing Line Em = 185  

    (not yet measured)

    Em/Eo = 185 / 24,000Em/Eo = 0.0078

    Original cross section area

    Strand dia = 3.25” ( 70% Metallic)

     Ao = 0.7 (3.14) r ²

      = .7 x 3.14x (1.625)²Ao = 5.80 in²

    Force Scale

    Sf = AmEm / (AoEo)

    (0.0031/5.80) x (0.0078)

      = 0.0000042Sf = 1/0.000001 so Sf = 1 : 239867

    For Model load

    w = 50psf x 40’

    = 2000 plf 

    used 0.024” dia

    (area = 0.00045 in² )

    used 0.012” dia(area = 0.00011 in² )

    study model

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    Original load Po

    Po = w L = 2000 x 160’= 320000 #

    Pm = Po Sf   = 320,000/239867

     Pm = 1.34 #

    Assume 7 cups to load from top coard/cable

    Pcup = Pm/7

    Load per cup = 1.34 / 7

    Pcup = 0.19 #simulated model

    a view of model

    series of picturesshowingdefelectionsfor equallyloadedmodel

    series of picturesshowingdefelectionsfor equallyloadedmodel

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    equally simulated model deflections

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    one side loaded model deflections

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    series of pictures

    showingdefelectionsfor singlesideloadedmodel

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    Books Refered..Eero Saarinen on his work , 1962

    Eero Saarinen, an architecture of multiplicity , Antonio Roman, 2003

    Structure, redear, G.G Schierle, 2004The Airport, architecture-urban integration-ecological problems, Edward G., 1974

    http://www.graphics.cornell.edu/academic/archartpcg/fall2000/students/mhj5/arch476.05/dulles/main.html

    (spirit scale and structure)

    Our special thanks to....

    Prof. G. Goetz Schierle and

    Xiaoun cheng (T.A.)

    Prepared by:

    Sumit Brahmbhatt (M.B.S. 2006)

    Varma Namburi (M.B.S. 2006)

    “Almost two miles away across the green

    Virginia countryside the great building comes into view with classic lucidity,

     massed in white splendor on its monumental

    base, its giant columns rising like muscular 

    arms to hold aloft the long brow of the 

    roof; and one knows immediately that this is

    the fulfillment of the search.”