Construction bidding. Construction bidding is the process of submitting a proposal (tender) to undertake, or manage the undertaking of a construction project. The process starts with a cost estimate from blueprints and material take offs.
In the Earth's crust, the most common elements are:    Oxygen 46.1%   Silicon 28.2%   Aluminum 8.23%   Iron 5.63%   Calcium 4.15%   Sodium 2.36%  â¦  Magnesium 2.33%   Potassium 2.09%   Titanium 0.565%   Hydrogen 0.14%   In the atmosphere, the most common elements are Nitrogen and  Oxygen.he most common gas in the earth's atmosphere is in fact, nitrogen, with it making up 78% of the air you're breathing right now. However, oxygen does make up 21% of the air. + 57 others found this useful.
Nitrogen and oxygen are the only gases that exist in the dry atmosphere that have concentrations above one percent near the earth's surface. The third most abundant gas in the dry atmosphere is argon (Ar).Argon is also considered a permanent gas.The permanent concentration of Argon is just less than one percent (about 0.93% to be more exact).itrogen and oxygen are the only gases that exist in the dry atmosphere that have concentrations above one percent near the earth's surface. The third most abundant gas in the dry atmosphere is argon (Ar).