Curbs: What Not To Do

Preamble: This article has nothing to do with Civil 3D, but it is of a civil nature.  If you’re only interested in Civil 3D and Civil 3D related blogs then go on to the next article. If, however, you have other personal interests and want to see something rather remarkable, click more.
I’ve always been taught to avoid curbs when designing a manhole layout. Nobody wants the curb to cut through a manhole lid.

Now I know on occasion you may have no choice. On other occasions…oops, the manhole is in the ground and curbs are being laid out. Uh, that manhole lid is in the way.

Ok, so stuff happens. You can deal with it in a few ways.  Here is one way.

It’s relatively inexpensive and shouldn’t affect anyone adversely.

In the following example (lower right) it would seem that:
This was constructed on a Monday morning.
The inspector was sleeping in the truck.
The contractor got out of school the previous Friday and drank a 24 on each of the nights thereafter.

If you look closely you can see a few chunks taken out of that curb undoubtedly from some unwary motorist, or worse a bicycle.

This one isn’t all that bad, as it doesn’t stick out that far into the travel way. There was another one within 1km of this one (same road) that stuck out further and had many marks on it. This one was removed not long before I took these shots, so I can’t show it. It was just at the end of a curb return so any driver rounding the corner had a little surprise waiting for them.

Interestingly, all three of these manholes are all within 2km of each other in the same City. I have not seen this phenomenon anywhere else.

For the Love of Pete, and all the cyclists out there, please don’t do this.


  1. Daryl Standrich says:

    Interesting pictures. What city were (are) these in? Around here in Kansas the first snaowfall would take care of the curbs sticking out. A Snowplow at 35 to 40 M.P.H. would (does) a number on anything in it’s path.

  2. Nick Zeeben says:

    If I had to guess I would say somewhere in Lowermainland area of British Columbia Canada. Which doesnt happen to get much snow.

  3. Matt Kolberg says:

    I won’t say which City specifically, to protect the innocent. Nick is on the right track.

  4. Nick Zeeben says:

    It’s ok Matt, you can tell us that you were the designer on this job. And that your plans have specific callouts for the “traffic calming measures”

  5. Matt Kolberg says:

    I think you made a typo. i think you meant “Traffic Calamity”.

  6. John Davis says:

    These are great! On a related subject (a PT?), a designer comes out of his office furious. “What are those idiots in the field thinking?” and “They should have known not to put a fire hydrant in the middle of the street.” Point 1.) Your approved plans gave the location (STILL wouldn’t use the software, even after this!!) 2.) They get paid to install things, not to inform you of your error then wait for days for you to “pull your head out”. 3.) They get paid to UN-install things, so your loss is their gain. Install, remove, re-install… BONUS! 4.) Who’s the idiot here? The idiot who leads or the idiot who follows the idiot? I’m telling this story since I quit them and won’t go back… not after this, at least!