calculation of wind pressure

Upload: ray-kinnaird

Post on 08-Aug-2018

216 views

Category:

Documents


0 download

TRANSCRIPT

  • 8/22/2019 calculation of wind pressure

    1/3

    Part 1 (iii)

    Frontal Length = 50 m = Pad foundationBuilding depth = 25 m

    Therefore, use grid spacing of 5 m

    = Typical pad foundColumn spacing = 5 m

    Beam Span = 5 m = Area of influence p

    Floor loading = 3 kN/m2

    Area of influence = 6.25 m2 (2.5m x 2.5m)

    Load of column / floor = 18.75 kN

    No. of floors = 4

    Load on foundation = 75 kN

    * Note that I am only taking into consideration a basic floor load of 3kN/m2 here, whereas in reality other loads such as slab weight and s

    25 m

    Part 2 (i) (this is a brief overview of the load path - you should perhaps include a visual sketch of this load path and a short descriptio

    Wind

    Roof cladding

    Purlins / Rafters

    Roof truss structure

    Columns / Beams of ste

    Bracing / Gable posts

    Wind Cladding / Brickwork

    (walls)

    Part 2(ii)

    Calculation of Basic wind pressure

    kb = 1

    Eaves Height = 12

    Roof Height = 4.55 m

    Total height = 16.5 m

  • 8/22/2019 calculation of wind pressure

    2/3

    Cr = 0.02

    vb = 23.8 m/s

    Sa = 1 (assumed topography is not significant)

    Sd = 1 (orientation unkown)

    Ss = 1

    Sp = 1

    vs = 23.8 m/s

    Hr = 16.5 m (max. height as a conservative value)

    Sb = 1.82

    Ve = 43.3 m/s

    DYNAMIC PRESSURE, qs = 1150 Pa

  • 8/22/2019 calculation of wind pressure

    3/3

    tion loading

    er floor on pad foundation

    ad weight of steel alongside live loads would come into play

    50 m

    n - I just dont have the time lad)

    el frame

    Foundation