your formula is correct, so why did you divide by 20??dymand68 said:Homework Statement
Suppose the 1.3 km main span of steel for the Golden Gate Bridge had no expansion joints. How much longer would it be for an increase in temperature of 20°C?
Homework Equations
change in Length=Length*coefficient linear expansion*change in temp.
=1300*(11*10^-6/20)*20
The Attempt at a Solution
incorrect:
.0143 meters
.2625
.1575
correct answer =.286 meters
A change in span length refers to any adjustment made to the distance between two fixed points or supports in a structure, such as a bridge or building. This can involve increasing or decreasing the length of the span, which can impact the overall stability and strength of the structure.
There are several factors that can contribute to a change in span length, including environmental conditions such as temperature fluctuations or natural disasters, changes in the weight or load on the structure, or structural damage due to wear and tear.
A change in span length can significantly impact the structural integrity of a building by altering the distribution of forces and loads within the structure. This can lead to increased stress or strain on certain components, potentially causing structural failure if not addressed properly.
In some cases, a change in span length can be prevented by implementing proper design and construction techniques, using high-quality materials, and regularly maintaining and inspecting the structure. However, certain factors, such as natural disasters, may be beyond our control.
A change in span length can be measured and monitored using various techniques, including strain gauges, displacement sensors, and laser scanning. These tools can accurately measure any changes in the length of the span and help engineers determine the best course of action to address them.