There have been many ice ages during the last 2.6 million years but when people talk about the Ice Age, they are often referring to the most recent glacial period, which peaked about 21,000 years ago and ended about 11,500 years ago.
It costs roughly â¦ $11-$13 for the materials and contractors average about $5-$8 per square foot for labor, not including steps. For example, my company charges approximately $18 per square foot to build a deck.
If you plan to build the deck yourself, plan to spend $1.50 to $5.00 per square foot for decking and $4 to $6 per square foot for joists and other framing materials. High-end woods such as cedar, redwood and ipe -- Brazilian walnut -- can cost more than twice as much as pressure-treated lumber.