wind load

39 m/seck1 1k2 0.91k3 1

Vz 35.49 m/sec5.66793045

Pd 0.75572406 kN/m2

Cpi 0.2-0.2

7.5 ml 30.49 mh 11.7 mw 9.75 mh/w 1.2l/w 3.12717949

Wind Angle Cpe Cpi Cpe-Cpiwindward leeward windward leeward

0 0.7 -0.3 0.2 0.5 0.50 0.7 -0.3 -0.2 0.9 0.1

b) For roofWind Angle Cpe Cpi Cpe-Cpi

windward leeward windward leeward0 -0.94 -0.6 0.2 1.14 0.80 -0.94 -0.6 -0.2 0.74 0.4

Basic wind speed

column spacing

a) For walls

(Cpe-Cpi).A.Pd (kN/m) Y(LEEWARD) GX (WINDWARD)windward leeward 1 6.46 4.53 2.83

2.834 2.834 2 4.19 2.27 5.105.101 0.567

(Cpe-Cpi).A.Pd (kN/m)

windward leeward6.461 4.5344.194 2.267

Y(WINDWARD)

GX(LEEWARD)2.830.57

CLASS OF STRUCTURE K1 FOR BASIC WIND SPEED

33 39 44 47

All general buildings and structures 50 1 1 1 1

5 0.82 0.76 0.73 0.71

25 0.94 0.92 0.91 0.9

100 1.05 1.06 1.07 1.07

K2

TOPOGRAPHY FACTOR

TABLE 1 RISK COEF’FICIENTS.FOR DIFFERENT CLASSES OF STRUCTURES IN DIFFERENT WIND SPEED ZONES K1

MEAN PROBABLE DESIGN LIFE OF STRUCTURE IN YEARS

Temporary sheds, structures such as those used

during construction operations ( for example,

formwork and falsework ), structures during

construction stages and boundary walls.

Buildings and structures presenting a low degree of

hazard to life and property in the event of failure,

such as isolated towers in wooded areas, farm

buildings other than residential buildings

Important buildings and structuressuch as hospitals communicationbuildings / towers, power plantstructures

TERRAIN CATEGORY

K1 FOR BASIC WIND SPEED

50 55

1 1

0.7 0.67

0.9 0.89

1.08 1.08

K2

TABLE 1 RISK COEF’FICIENTS.FOR DIFFERENT CLASSES OF STRUCTURES IN DIFFERENT WIND SPEED ZONES