What is the purpose of gaps in the road on bridges?
Expansion and contraction with heat and cold causes the road to swell and shrink. the gaps are for that purpose so the road or bridge would buckle and break if they were not there! Before this was discovered things broke often
There are 8 bridges in Cologne (German: Köln) crossing the Rhine: two raliway bridges and six road bridges. they are: The Hohenzollernbrücke (railway) The Südbrücke (railway) The Rodenkirchener Brücke (Autobahn) Leverkusener Brücke (Autobahn) The Deutzer Brücke (road) The Müllheimer Brücke (road) The Severinsbrücke (road) The Zoobrücke (road)
Expansion gaps are the controlled gaps between the structure. The gaps purpose is to compensate and go with the changes of the structure overtime. For example: Materials such as concrete shrink overtime and clay expand slowly. So, it is needed for the structure to have expansion gaps to avoid damages.
beam bridges are usually the cheapest. The cost usually depends on the size of the bridge and the materials used. Beam bridges usually consist of storng wood and san small gaps, therfore being the cheapest to build. Although they are cheap, they are not the strongest nor the most reliable and can not span large gaps.
A bridge is a structure built to span a road, a body of water , or other physical obstacle, for the purpose of providing passage over the obstacle. Designs of bridges vary depending on the function of the bridge and the nature of the terrain where the bridge is constructed. But since the world has been making new types of bridges, more have been proven to be safer and to be more logical to use…
The property of solids in which they enlarge when warmed is thermal expansion. The opposite, shrinking when cooled, is thermal contraction. This property greatly effects how bridges, sidewalks, and concrete roads are made. They all have "expansion gaps," gaps between sections that allow the sections to expand in the heat of summer. Without those, the concrete would break and the bridges would warp and bend.