0
Sections of bridges expand due to heating and/or changes over time in the bridge structural material (e.g. wood). [[User:Cjonb|Cjonb]] 18:33, 2 Jun 2008 (UTC)
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoThey dont
Add your answer:
Earn +20 pts
What material allows concrete sections to expand on bridges?
Material such as wood allow the concrete to expand
Why do metal bridges have gaps at one end?
So it can expand
Does concrete expand?
yes, that is why they put expansion joints on bridges. (: your welcomeyes, that is why they put expansion joints on bridges. (: your welcome
Why are there expansion gaps in bridges?
Hot weather causes the metal the bridges are made of to heat up and expand. If there was no space for them to expand then the bridge would either crack it's foundations or tear itself to pieces.
Does structure contract or expand?
If a structure is made of a flimsy type of material, it may cause the structure to contract or expand. Bridges are a type of structure that may expand or contract depending on the weather environment the bridge is in.
What is the gaps in bridges used for and what material?
it is used so when sunlight falls on the bridge and it will expand so it will no crack
Why do steal bridges have gaps on them?
The gaps allow the steal to expand as the day gets hotter, and prevent the steal from buckling.
Why do engineers design bridges with expansion slotsions?
Because bridges expand and contract with the change in temperature. The expansion joints allow the bridge to 'flex' as the temoerature rises and falls, ensuring the structure doesn't buckle or collapse.
How would temperature affect bridges?
the metal or concrete might expand if it gets too hot and compress when it gets too cold.
Why does the Eiffel tower grow in summer?
The heat from the Sun causes the metal framework of the tower to expand slightly. The same happens to any exposed metal structure - including bridges. That's why bridges have an 'expansion gap' at each end.
Why do big bridges have small gap in them?
Bridges, along with many other structural elements, expand (get wider and longer) when heated by the climate or by the Sun. If the bridge decks were fit tightly together, the heat expansion would cause them to buckle up and create a serious hazard to vehicles crossing. The gaps let the bridge expand into them, and nothing buckles.
Why do roads over bridges have small gaps in them?
To allow them to expand and contract with heat and cold. Without those, the road would end up buckling.
