Questions tagged [roadway]

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1answer
35 views

Are storm drains put after road has been finished and asphalted?

Local government has been doing main capital city road reconstruction for a year now (had to be done in 3 month originally, but it is out of budget and out of time as usual). They have finally opened ...
-1
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1answer
36 views

Why do the sidewalks on USA roads use big, massive stone plates instead of asphalt?

Roads in the USA use asphalt, like every other country. However, the sidewalks don't use asphalt. Instead, they use enormous, gigantic square blocks of some kind of stone material. Where I live, the ...
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2answers
72 views

Banking progression in NASCAR tracks

the Bristol Motor Speedway is 0.533 mi long racetrack. The road is banked and circular. The straights are banked to 6–10° and turns to 26–30°. I have made a small diagram for ilustration. Before the ...
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2answers
74 views

NASCAR corners on public roads

Why don't engineers build highways with corners such those on NASCAR speedways?
1
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3answers
106 views

What kind of splines should be used when planning roads?

I would like to plan a small road network for an imaginary city, and I am looking for a way to create curved road segments. I am familiar with cubic Bezier curves, but I am not sure if it's the best ...
1
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2answers
101 views

How do enginners build highway interchanges ? Are highway interchanges build based on a mathematical theory such as braids and knots theory?

I am trying to find how do enginners build roads especially highway interchanges. Are they relying on any topology theories such as braids and knots theory? Is there any connection or link between ...
3
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1answer
99 views

Does rain cause Tarmac / asphalt pot holes? If so, how?

Does rain cause Tarmac / asphalt pot holes? If so, how? After a period of rain in my city there are plenty of fresh new pot holes in the Tarmac / asphalt surfaces. The immediate cause is obviously ...
3
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1answer
75 views

Street Light Arrangement Method

Hello I am a high school student and I am curious about how street light is arranged along the road. Is there government laws to install street light on the road or is the arangement of the street ...
3
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1answer
105 views

Vehicle load factor discrepancies

I am doing research on the impact of vehicles on roadways, specifically garbage trucks. In my research I am finding largely different "answers." For example "Using American Association of State ...
-1
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1answer
119 views

What would be the implications of a metal highway design? [closed]

I'm an engineering enthusiast but I don't yet have a formal education in engineering and I'm hoping you guys can tell me about the implications of using a metal road design in terms of durability and ...
3
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3answers
1k views

Are crushed cement stones and additional digging necessary when repaving a road?

These days the city is repaving the main road close to my office. Looks like the rainwater drainage system is being upgraded and curbs and drains are added to manage the flow of rain water. Few casual ...
8
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7answers
4k views

Why do we pave roads instead of making them from removable parts?

If roads were made of removable parts, we'd probably have fiber cable internet everywhere by now I'd say. It'd be so much easier to install e.g. new electricity and water infrastructure and to ...
20
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2answers
2k views

Why are earthfills fully covered in concrete where they join bridges?

Here's how a typical earthfill carrying a roadway joins a typical bridge Parts of the earthfill slopes are greenish - that's grass - and parts are whitish - that's concrete. The earthfill slope is ...
12
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2answers
1k views

Why do earth cuts sometimes have steps on their walls

A neat image from Wikipedia: There're clearly visible steps on the cut wall. This makes the cut wider at the top and so requires more work so those steps have some serious reason behind them. What's ...
5
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2answers
529 views

Term for double slope from street

One of the places I frequent recently had the curb and sidewalk rebuilt by the city. Previously, there was a roughly continuous transition from the street to the rest of the private drive next to the ...
6
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1answer
2k views

Does passenger car traffic actually damage roads?

Pavement Design In roadway pavement design, the (US) controlling design load is usually the Equivalent Single Axle Load (ESAL). This number attempts to quantify how much bending stress a given ...