Wind Eurocode

WIND PRESSURE IN BUILDINGS by Eurocode 1 (EN 1991-1-4) Basic wind velocity Terrain category

Building height Building depth

Roughness factor Orography factor Terrain factor Mean wind velocity Turbulence intensity

vb =

m/s

z0 = zmin =

25 0 0.003 1

h= b=

77.36 28

m m

4.2 table 4.1

m m

cr(z) = 1.585 c0(z) = 1 kr = 0.156 vm(z) = 39.624 m/s Iv(z) = 0.098

(4.4) 4.3.1 (4.5) (4.3) (4.7) 2

Peak velocity pressure

qp(z) =

1.658

Relation

h/b =

2.763

Pressure coefficient Suction coefficient

cpe,10 = cpe,10 =

0.800 -0.588

Uper zone, Press.

qp(h) =

1.326

kN/m2

Suction

-0.975

Bottom zone, Press.

qp(b) =

1.123

kN/m2

Suction

-0.825

kN/m

(4.8)

h > 2b table 7.1 table 7.1

Roughness factor Orography factor Terrain factor Mean wind velocity Turbulence intensity Peak velocity pressure

cr(b) = 1.426 c0(b) = 1 kr = 0.156 vm(b) = 35.659 Iv(b) = 0.109 qp(b) = 1.403

991-1-4)

kN/m2

Total

2.301

kN/m2

kN/m2

Total

1.948

kN/m2

0 I II III IV