It is the POSITIVE pressure. Basically how much "push" the wind causes.
Without wind tunnel testing and other testing, testing in flight would be even more dangerous to the test pilot, and anyone killed should the aeroplane crash.
Live
The dead load is the weight of the bridge itself. The live load is things like traffic, wind, rain, etc. The dynamic load are things like earthquakes, big gusts of wind, and other things.
In a wind tunnel test the plane never leaves the ground. It's only to see how the wind will affect the plane. When your testing during real flight, your actually in the sky and really flying the plane.
more money
the purpose is they can find the best shape to go with the wind
by siltation, as part of the bed load
by siltation, as part of the bed load
The load of a bridge is the amount of weight that can be distributed throughout the bridge without collapsing. Engineers take into effect, wind, rain, and earthquakes when calculating the load.
Curtain wall is a term used to describe a building faced which does not carry any dead load from the building other than its own dead load, and one which transfers the horizontal loads (wind loads) that are incident upon it.
THat depends on what you would use it for.
When wind drops its load of sand, it can form a hill called a sand dune. Sand dunes are commonly found in deserts and coastal areas, and their formation is a result of the movement and deposition of sand by wind.