Question: How did Effel account for the effects of wind?
About the article "Eiffel Tower", section "Wind considerations".

Candidate passages:
Graitec local software packages include the following:  Effel, a program of CAE / structural analysis and design.
Based on the finite element calculation method, Effel performs static and dynamic analyses of 2D or 3D buildings.
The software is provided with a large range of functionalities, such as 3D climatic generator, non-linear calculation, large displacement reinforced, concrete structure optimization, regulatory verification for reinforced concrete, steel and timber, etc.
In 1991, with Effel v. 2, GRAITEC was the first software provider to deliver automated optimization of materials according to reinforced concrete and steel construction standards.
Moreover, in 1995, Effel was the first software application provided with an automatic 3D climatic action generator.
Effel is currently available in France and French-speaking countries.
Arche, a software application for CAE / reinforced concrete structural analysis and design.
Dedicated to calculation of reinforced concrete buildings, Arche is used to conduct preliminary sizing of the structure and to perform simultaneously load distribution, wind bracing and seismic analyses.
For each structural element, Arche also automates the creation of reinforcement drawings.
Arche is available in France and French-speaking countries.
Melody, an application for CAE / steel framework analysis and design.
It allows automatic dimensioning of steel frames and creation of "turnkey" calculation reports.
Melody is available in France and French-speaking countries.
Cadkon, an application for automatic drawing in AutoCAD dedicated to CAD / architecture and MEP (sanitary, heating, electrical and plumbing).
CADKON also includes a timber drawing module for AutoCAD Architecture.
Cadkon is produced in the Czech Republic and distributed in Europe.
MillerCAD: a program for CAD / office layout design.
MillerCAD is an AutoCAD based application for specifying Herman Miller office furniture and automating the design of office layouts.
It provides built-in quality control, preventing the designer from creating invalid product specifications.
MillerCAD is produced in United Kingdom and used worldwide.  
Effel was born in Paris and graduated in art, music and philosophy.
Despite all efforts and wishes of his father to take over his merchant trade, Effel chose path of a professional artist.
Often he drew for French newspaper l'Humanité and he is also author of illustrations of Jean de La Fontaine fables.
The cartoon cycle "The Creation of the World" is considered to be his greatest work.
It was (filmed in 1957 by director E. Hofman).
The entire cycle includes five books: "Le Ciel et la Terre" (Sky and earth), "Les Plantes et Animaux" (Plants and animals), "L'Homme" (Man), "La Femme" (Woman) and "Le Roman d'Adam et Eve" (Story of Adam and Eve).
Among his important works are also the collection of anti-fascist caricatures from 1935 and the book of cartoons "When Animals Still Talked" from 1953.
Effel's paintings are easily readable, fresh, humorous and novel, and carry his recognizable curly signature often with a little daisy in the lower right corner that shows the author's kind view of the world.
Jean Effel had close relation to the USSR and Czechoslovakia, and was the longstanding chairman of the "Company of French-Czechoslovak Friendship".
He received the Lenin Peace Prize in 1967.
He died in Paris in 1982. 
Turbines are often mounted on a tower to raise them above any nearby obstacles.
One rule of thumb is that turbines should be at least higher than anything within .
Better locations for wind turbines are far away from large upwind obstacles.
Measurements made in a boundary layer wind tunnel have indicated that significant detrimental effects associated with nearby obstacles can extend up to 80 times the obstacle's height downwind.
However, this is an extreme case.
Another approach to siting a small turbine is to use a shelter model to predict how nearby obstacles will affect local wind conditions.
Models of this type are general and can be applied to any site.
They are often developed based on actual wind measurements, and can estimate flow properties such as mean wind speed and turbulence levels at a potential turbine location, taking into account the size, shape, and distance to any nearby obstacles.
A small wind turbine can be installed on a roof.
Installation issues then include the strength of the roof, vibration, and the turbulence caused by the roof ledge.
Small-scale rooftop turbines suffer from turbulence and rarely generate significant amounts of power, especially in towns and cities. 
When in flight, the main forces acting on the projectile are gravity, drag, and if present, wind.
Gravity imparts a downward acceleration on the projectile, causing it to drop from the line of sight.
Drag, or the air resistance, decelerates the projectile with a force proportional to the square of the velocity.
Wind makes the projectile deviate from its trajectory.
During flight, gravity, drag, and wind have a major impact on the path of the projectile, and must be accounted for when predicting how the projectile will travel.
For medium to longer ranges and flight times, besides gravity, air resistance and wind, several meso variables described in the external factors paragraph have to be taken into account.
Meso variables can become significant for firearms users that have to deal with angled shot scenarios or extended ranges, but are seldom relevant at common hunting and target shooting distances.
For long to very long ranges and flight times, minor effects and forces such as the ones described in the long range factors paragraph become important and have to be taken into account.
The practical effects of these variables are generally irrelevant for most firearms users, since normal group scatter at short and medium ranges prevails over the influence these effects exert on firearms projectiles trajectories.
At extremely long ranges, artillery must fire projectiles along trajectories that are not even approximately straight; they are closer to parabolic, although air resistance affects this.
In the case of ballistic missiles, the altitudes involved have a significant effect as well, with part of the flight taking place in a near-vacuum. 
Wind shear affects sailboats in motion by presenting a different wind speed and direction at different heights along the mast.
Wind shear occurs because of friction above a water surface slowing the flow of air.
Thus, a difference in true wind creates a different apparent wind at different heights.
Sailmakers may introduce sail twist in the design of the sail, where the head of the sail is set at a different angle of attack from the foot of the sail in order to change the lift distribution with height.
The effect of wind shear can be factored into the selection of twist in the sail design, but this can be difficult to predict since wind shear may vary widely in different weather conditions.
Sailors may also adjust the trim of the sail to account for wind gradient, for example, using a boom vang.