Bridge Report

                All bridge builders are the same, right? You have to use the same things as others use, balsa wood and glue to make a bridge.  The balsa wood has hydrogen, oxygen, and nitrogen. The chemistry principle is that glue bonds with wood for stronger joints. They are the gravity; weigh of bridge stretchy, compression load. 

          In the bridge design the most important thing is measuring and using good math in it. If you measure incorrectly or do not use the right way your bridge will not bear much weight. Before we make a bridge we need to design it on a piece of paper or on the computer graphic designs. So that could be easy to make good designs and load more weight.  I recommend that you should us a square, rectangle, and triangle all this mist together.  It became strongest thing.  Because a diagonal brace converts the rectangle into tow triangles, thus making the figure much stronger. Converting figures into triangles is one are the strongest possible figure. When you had done draw a bridge in three views. Cut strips of wood to fit the outline of the bridge that the three-view drawing provides.  Use the knife cut bossily wood.  To ensure a nice fit, cut the pieces as little too long on the first cut them trim the end for a nice fit. Pin each piece into its place once a nice fit is attained.  Once all of the cut strips fit smoothly, glue them in place on the What ever you have drawing your bridge on. Use pins to hold the pieces flat.  After the outline has been glued into place, fill in the wood strips which make up the other members of the first side of the bridge.  Make sure that joints are completely dry before moving the pins. It needs to take time to do this. After one side had dried, complete side two by following the steps just completed. Now build the cross braces which support the roadway of the bridge.  Build them exactly the same length.  Build the top cross braces which support the bridge. Build them exactly the same length.  After the cross braces have been built and have dried. You build the X from 4 Conner. To complete the model bridge by checking all the joints to see that they are well glue and that all are tightly in place.

          The strength is that the type of bridge you make and when you joint it together. When you load the weight on your bridge is that you put the weight on your bridge equally.  You need to know that if you put the weight low is the gravity is not height.