WIND LOAD

WIND LOAD CALCULA SHOULD'NT CH YOU CAN CHAN

INPUT Bay spacing of the Building, b (m) = Total Bay of the Building, B (m) = Span of the Building, L (m) = Mean height of the building h (m) = Slope of the Structure in Degree = Basic wind Speed Vb (Kmph)= Structure Importance Factor C I = Exposure Category = Purlin Spacing (m) = Velocity to pressure co-efficient C c =

6.400 m 25.600 m 29.700 m 18.29 m 5.71 215 1.00 B 1.20 m 4.72E-05

WIND DIRECTION

0 h/B L/B

0.71 1.16015625

Dead Load on Roof Weight of Roof sheet = Weight of Purlin = DL from Roof sheet = DL from Purlin = Total DL =

4.5 Kg/m2 5.1 Kg/m 0.28 KN/m 0.27 KN/m 0.55 KN/m

Live Load on Roof Live load = LL on frame =

0.57 KN/m2 3.65 KN/m

Collateral Load on Roof Collateral = Collateral on frame =

0.2 KN/m2 1.28 KN/m

Collateral = Collateral on frame =

3 KN K N/m2 19.20 KN/m

2

EXTERNAL PRESSURE COEFFICIENT , Cpe

b

c

(a) SingleGable

Cpe Design wind pressure

Pz KN/m

a

b

c

0.8

-0.8142

-0.7

16.32 -16.576 -14.272

c

b

c

m

m

m

a

(b)Pitched Roof  a

WIND DIRECTION 0

b 0.7

-0.8142

Design wind pressure

Pz

c d

b

e

m

a

(c)North Light R

WIND DIR. a 0 Design wind pressur

Pz

b 0.7

c 0.6

d -0.7

e -0.7

m -0.4

-0.3

b

c

d

m

n

a

(d)Saw-Tooth Roof  a 0

b 0.7

Design wind pressure

Pz

c

-0.9 FALSE FALSE

0

9

d -0.9

m -0.5 0.2 FALSE FALSE

-0.5 0.5 FALSE

n -0.5 0.3 FALSE

ION NGE THE RED E

1.435

1.1205

1.825

COMBINED HEIGHT & EXPOSURE COEFFICIENT, Cz

Coefficient, Cz H e ig h t a b o v e g ro E

E

E

v

le

n

u s

o

o

o

x

x

x

d

p

p

p s s u

u e l, z (

4.5 6

u re A

0.368 0.415

re B

0.801 0.866

re ,C

1.196 1.263

9

0.497

0.972

1.37

d

12

0.565

1.055

1.451

-0.47

15 18

0.624 0.677

1.125 1.185

1.517 1.573

-9.6

21

0.725

1.238

1.623

24 27 30 35 40 45 50 60 70 80 90 100 110 120 130 140 150 160

0.769 0.81 0.849 0.909 0.965 1.017 1.065 1.155 1.237 1.313 1.383 1.45 1.513 1.572 1.629 1.684 1.736 1.787

1.286 1.33 1.371 1.433 1.488 1.539 1.586 1.671 1.746 1.814 1.876 1.934 1.987 2.037 2.084 2.129 2.171 2.212

1.667 1.706 1.743 1.797 1.846 1.89 1.93 2.002 2.065 2.12 2.171 2.217 2.26 2.299 2.337 2.371 2.404 2.436

170

1.835

2.25

2.465

180 190 200

1.883 1.928 1.973

2.287 2.323 2.357

2.494 2.521 2.547

220

2.058

2.422

2.596

240 260 280 300

2.139 2.217 2.91 2.362

2.483 2.541 2.595 2.647

2.641 2.684 2.724 2.762

30 35 18.29 m

0.849 0.909 0.709

1.371 1.433 1.226

1.743 1.797 1.617

m

c

m

m -0.7

z -0.3 0.2

-0.2

x

n

y z

EXTERNAL PRESSURE CO-EFFICIENT FO

of 

n

x -0.2

y -0.1

z -0.3

SURFACE

L/B

WINDWARD WALL

all values

-0.2 LEEWARD WALL

<=

0.1

>=

0.65 1 2 4

x

1.17

y z

SIDE WALL

all values

EXTERNAL PRESSURE CO-EFFICIENT FO

x -0.3 0.5 FALSE

y

WIND WARD ROOF h/L

0.62

LEEWARD ROOF

0.62

z -0.4

-0.2

0.14

1.152211

Guest Response Factor, Gh H e ig h t a b o v e g ro u E

E

E

le

o

o

o

n

x

x d

x p

p

p s

s

s

v

u

u e

u

l( m )

4.5 6

re , A

1.654 1.592

re , B

1.321 1.294

re , C

1.154 1.14

C

C P

P E

1.435

E

3.31 3.51

1.12 1.12

9

1.511

1.258

1.121

3.83

1.12

12

1.457

1.233

1.107

15 18

1.418 1.388

1.215 1.201

1.097 1.089

4.07 4.28 4.46

1.12 1.12 1.12

21

1.363

1.189

1.082

24 27 30 35 40 45 50 60 70 80 90 100 110 120 130 140 150 160

1.342 1.324 1.309 1.287 1.268 1.252 1.238 1.215 1.196 1.18 1.166 1.154 1.114 1.134 1.126 1.118 1.111 1.104

1.178 1.17 1.162 1.151 1.141 1.133 1.126 1.114 1.103 1.095 1.087 1.081 1.075 1.07 1.065 1.061 1.057 1.053

1.077 1.072 1.067 1.061 1.055 1.051 1.046 1.039 1.033 1.028 1.024 1.02 1.016 1.013 1.01 1.008 1.005 1.003

4.61 4.74 4.87 4.99 5.16 5.32 5.46 5.59 5.83 6.03 6.22 6.38 6.55 6.69 6.82 6.95

1.12 1.12 1.12 1.12

170

1.098

1.049

1.001

180 190 200

1.092 1.087 1.082

1.046 1.043 1.04

1 1 1

220

1.073

1.035

1

240 260 280 300

1.065 1.058 1.051 1.045

1.03 1.026 1.022 1.018

1 1 1 1

30 35 18.29 m

1.309 1.162 1.287 1.151 1.360512 1.188

1.067 1.061 1.081

WALL qz=CCXCIXCzXVb2

Cpe

0.8 2.674911 KN/m2 -0.5 -0.6 -0.5 -0.3 -0.2

pz=CGXCpeXqz 2.55 KN/m2

Pz KN/m 16.32 KN/m

-0.47 2.674911 KN/m2

-1.5 KN/m2

-9.6 KN/m

-0.7 2.674911 KN/m2

-2.23 KN/m2

-14.272 KN/m

-0.8142 2.674911 KN/m2

-2.59 KN/m2

-16.576 KN/m

-0.4281 2.674911 KN/m2

-1.37 KN/m2

-8.768 KN/m

-0.7 2.674911 KN/m2

-2.23 KN/m2

-14.272 KN/m

ROOF

-16.576 KN/m

2.59 2.74

2.99 3.18 3.34 3.48 3.60 3.70 3.80 3.89 0.00