Structural Engineer Costs. Homeowners spend an average of $512 on hiring a structural engineer, with most homeowners spending between $319 and $708. The larger and more detailed the project is, the higher the cost of hiring a structural engineer becomes. Some professionals charge by the job, while others may charge by the hour.
The total surface area of Earth is about 197 million square miles (509 million square km). About 71 percent is covered by water and 29 percent by land.
How many acres of land are in the world? The land are of the earth is about 148,940,000 kmÂ² , or about 57,491,000 mi2 or about 36,794,240,000 acres. Wikipedia has more information, and a link is provided.