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bridge was then tested again. Therefore, every bridge type was tested a total of two times and the results were recorded. Results The first beam bridge held 14.5 pounds. Beam bridge number two held 12 pounds so the average weight of the beam bridges was 13.25 pounds. Arch bridge number one held 21.5 pounds. The second arch bridge held 21 pounds so the average weight held by the arch bridges was 21.25 pounds. Truss bridge number one held 24 pounds. The second truss bridge held 23 pounds so the average weight held by the truss bridges was 23.5 pounds. Conclusions/Discussion The results of this experiment proved that the hypothesis was correct in that the truss bridge held the most weight. The beam bridge was the weakest holding the least amount of weight and the arch bridge was the
For instance, if a bridges strength is 110 pounds, and the weight of material is 100 pounds, then you can only put 10 pounds on the bridge before failure. Bridges can be made from any material.Wood is commonly used on hiking trails, Composite (Plastics) have been used on some small bridges. However, the two most popular are Steel, and reinforced concrete (Reinforced Concrete has steel rods inside the concrete to increase the strength).he strength of the bridge is how much load it can handle. The weight is how much the bridge weighs before loads (such as cars) are applied. The weight of the construction material must be included when considering the total strength of the bridge.