Grabber: Truss bridges are a good creation because it helps with traveling since it is a sturdy and cheap efficient bridge to make.
Define truss bridges and explain how they are different from other bridges:
A truss bridge is a bridge whose load-bearing super structure is composed of a truss, a structure of connected elements forming triangular units. The connected elements are typically straight. The truss bridge is different because it uses triangles, its way brought about in the 19th and 20th century. in paragraph citation (author, year) ) J.B. Calvevt Created July 19 2000.
Who When, why and where were truss bridges first used and why did they become popular again? The truss bridge was first developed by Thomas and Caleb Pratt in 1844. They were…
Describe optimal length, width and height ratios: The Golden Gate Bridge is one mile wide and three miles long and it is 4200 feet high.
(author, year) https://en.wikipedia.org/wiki/Golden_Gate_Bridge
Benefits of triangles, arches, and crosses: The benefits of triangles is that it is a strong support along with arches and crosses.
Advantages and disadvantages of wood vs. steel vs. concrete: Advantages of wood is that heat makes it stronger but the disadvantage is it deteriorates. The advantages of steel is lightness, high strength and stiffness per weight. Low fire resistance, susceptibility corrosion. Advantages of concrete is the durability is very high withstand high temperatures the disadvantages are less ductile, the weight of compared is high compared to its strength.
(author, year) http://www.kultur.gov.tr/EN,35285/wood-as-a-building-material-its-benefits-and-disadvanta-.html, http://civilengegy.blogspot.com/2012/02/advantages-and-disadvantages-of-steel.html, http://civiltoday.com/civil-engineering-materials/concrete/15-advantages-and-disadvantages-of-concrete….
