Estimate and compare construction costs for different years in the same city. To estimate the national average construction cost of a building in 1970, knowing that it cost $900,000 in 2016: INDEX in 1970 = 28.7. INDEX in 2016 = 207.2. Note: The city cost indexes for Canada can be used to convert.
The four types of landforms are: Mountains, Plains, Plateaus and  Valleys. These types of landforms can be found in any part of the  world. Landforms also have different ide â¦ ntifying characteristics. Answered.
The three most common types of mountains are fault-block, folded, and volcanic mountains.he three most common land forms in the state of Washington are  lakes, rivers and mountains. One of the major land forms is Puget  Sound and the Olympic Mountains. 2 people found this useful. Edit.