Wind Load vs. Wind Speed
Wind load on surface  Wind load calculator.
When moving air  wind  is stopped by a surface  the dynamic energy in the wind is transformed to pressure. The pressure acting the surface transforms to a force
F_{w} = p_{d} A
= 1/2 ρ v^{2} A (1)
where
F_{w} = wind force (N)
A = surface area (m^{2})
p_{d }= dynamic pressure (Pa)
ρ = density of air (kg/m^{3})
v = wind speed (m/s)
Note  in practice wind force acting on a object creates more complex forces due to drag and other effects.
Wind Load Calculator
Wind Speed (m/s)  Wind Load^{1)} (Pa) 

1  0.6 
2  2.4 
3  5.4 
4  9.6 
5  15 
6  22 
7  29 
8  38 
9  49 
10  60 
11  73 
12  86 
13  101 
14  118 
15  135 
16  154 
17  173 
18  194 
19  217 
20  240 
21  265 
22  290 
23  317 
24  346 
25  375 
26  406 
27  437 
28  470 
29  505 
30  540 
31  577 
32  614 
33  653 
34  694 
35  735 
36  778 
37  821 
38  866 
39  913 
40  960 
41  1009 
42  1058 
43  1109 
44  1162 
45  1215 
46  1270 
47  1325 
48  1382 
49  1441 
50  1500 
^{1)} density of air 1.2 kg/m^{3}
 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph
 1 Pa = 1 N/m^{2} = 1.4504x10^{4} psi (lb/in^{2})
Example  Hurricane Wind Load acting on a Wall Surface
A hurricane with wind speed 35 m/s is acting on a 10 m^{2} wall. The dynamic force can be calculated as
F_{w} = 1/2 ρ v^{2} A
= 1/2 (1.2 kg/m^{3}) (35 m/s)^{2} (10 m^{2})
= 7350 N
= 7.35 kN
Or  from the table above the wind load per square metre is 735 N/m^{2}. The total load on the wall can be calculated as
(735 N/m^{2}) (10 m^{2}) = 7350 N^{ }
A hurricane acting on a 10 m^{2} wall creates a force equal to the weight of aprox. 750 kg.
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