For this project we had to choose a floor system to use on the second floor.  i chose the pre cast concrete because it is cheaper to use and easier to put in.  This activity helped me to learn more about concrete. 

Structural Efficiency Card building

For this project we had to design and build a card structure.  It needed to be at least 7 and a half inches tall and be able to hold up 5 pounds.  We came in second holding up 5407 grams and had an efficiency rating of 215.  In our original structure we only had an efficiency rating of 40.87.  So for our design renovations we change the whole design.  Instead of triangles we used a circle with cards inbetween for support. 
5407 / 25.1 = 215

Keystone Library Commertial Roof

For this part of the project we had to resurch Green roofs, and then put on a the best layers for the green roof.  I also put on a curved roof for the top layer.  We also had to resurch low slope walkable roofs.  I learned that EPDM roofs can support the weight of people walking on then.  Also that concrete roofs can handle people walking on them http://www.wbdg.org/design/env_roofing.php   So from this project I learned how to created a curved and green roof and what materials are needed for their layers.  It was quite difficult to find information on low slope roofs but it helped in my decision of materials. 

For this project we had to learn about the different wall types and then choose one to put in the Keystone building.  I chose to use a curtain wall.  I learned some of the different uses for each type of wall.