1.  Giorgina Cumarin.  Gustavo Villareal.  Rosa Ortiz. 09-10592 English for Architecture and Urban Planning II ID2-125 April-July 2012 Prof. Marianela Najul

2.  Introduction  History  Uses  Advantages and disadvantages  Physical properties  Mechanical properties

3.  Used as fuel and as a construction material.  It is an organic material.  In a living tree it performs a support function.  Transfer water and nutrients to the leaves and other growing tissues.

4.  A 2011 discovery, uncovered the earliest known plants to have grown wood.  People have used wood for making houses, tools, weapons, furniture, packaging, artworks, and paper.  Wood can be dated by carbon dating and in some species by dendrochronology.

5.  Fuel  Furniture and utensils  Construction  Engineered wood  Sports and recreational equipment

6.  Advantages: ◦ Potash storage building. ◦ Salt storage domes. ◦ Cooling towers.  Disadvantages: ◦ You can get splinters. ◦ You can break your neck and back if a branch falls on you. ◦ Trees absorb carbon dioxide and give out oxygen.

7.  Moisture Content  Shrinkage  Density  Permeability  Thermal  Electrical

8.  Elastic  Strength  Vibration These properties are dependent from:  Species  Grain orientation  Moisture content  Loading rate  Size  Location

9. The first everything; including the first submarine and airplane; were first made of wood. Good for making anything from paper to desks to furniture to entire homes. It is also used for heating purposes. Wood is an important natural resource, one of the few that are renewable. It is prevalent in our everyday lives and the economy, in wood-frame houses and furniture; newspapers, books, and magazines; bridges and railroad ties; fence posts and utility poles; fuelwood; textile fabrics; and organic chemicals. Wood and wood products are also a store for carbon, thus, helping to minimize carbon dioxide in the atmosphere.

10.  http://wiki.answers.com/Q/Why_wood_is_important#i xzz1xlqVQybKhttp://wiki.answers.com/Q/Why_wood_is_important#i xzz1xlqVQybK  http://en.wikipedia.org/wiki/Wood http://en.wikipedia.org/wiki/Wood  http://www.kramers.org/whywood.html http://www.kramers.org/whywood.html  http://www.wicnet.org/consumer/wooduses.asp http://www.wicnet.org/consumer/wooduses.asp  http://www.cwc.ca/index.php/en/topmenudesignwithw ooddurability/ http://www.cwc.ca/index.php/en/topmenudesignwithw ooddurability/