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Dear All,
Our client wants to compete for the construction of a complete sewage system, which includes the construction of sewage pipes in more than 200 streets.
During the construction streets will be closed, and some of them will be closed at the same time. It is a requirement (and we should prove it now in the tender phase) that despite of the cut offs (blockades) of the streets all the adresses will be accessible from everywhere.
At the same time - as deadline is tight - we want to start the construction at as many as possible streets.
What we have is the topology (graph) of the city. From matemathical point of view it is quite clear (we have to look for the minimal spanning tree, and we can close all the other roads) If you have any other suggestion that can solve this problem please let me know.
If you have any application even in Excel that can handle this problem please let me know. (I do not want to waste my time on developing an application for this)
I also would like to know if anyone of you had encountered this kind of problem before
Thanks in advance
Miklós
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Rafael,
Thanks for the info, I couldn't imagine that so many software deal with traffic simulation. This is a proof for the statement of on of my old professor, "there is nothing new in science the only problem is that we do not follow the literature"
An this unfortunately more or less true.
Thanks again
Daniel
Thanks for the info, in case of small projects I would follow your recommendations, but here we have several hundred roads to lock temporarliy.
Miklós
Miklos,
You can request a soft copy of the topography and you can use powerpoint to design your temporary traffic arrangement schemes. Somebody needs to sit down and study, no software can do it automatically. You need to plan it in stages for example, TTM Stage 1, you will close half of the road for Roads 1,2 & 3 and so forth.
Regards,
Daniel
Guys,
Thanks for all your comments.
Iin this case the client has a definite requirements, We have to pkan when and what to close (depends on our resources, technology, organizing skills, etc.) and we have to prove that traffic will work in each phases. It means that it is not enough to say that I'll close this 20 streets now, and that 35 after that at the same time and everything will be fine, but I have to prove that all the points of the town will be accessible from everywhere, and the neighbouring streets can take the whole load without or with the less problem.
So I software that is affordable would be a great help. I do not want to call in expensive traffic consultants in the tender phase. So if you know such a software please let me know
Thanks
Miklos
Hi Miklos
When you have assimilated all the excellent advice from Daniel and Rafael it would be helpful to put the blockade zones on calendars and assign them to each work zone.
This will emphasise the impact if you do not get possession of the road in time.
Best regards
Mike Testro
Miklos,
As Daniel just said, close one lane only and keep the other open, luckily usually sanitary lines go at one side of the street only, at the opposite side of potable water lines. You will need a crew for traffic control as you will be left with one side of the street only, and if a two lane street you will have only one lane or one way traffic at a time. Also at some times loading of trucks to get rid of dirt will stop al traffic, here again the continuous need of the traffic control crew.
For back filling there is a special kind of concrete that can be excavated, more expensive than dirt but can be an alternative, at times even required as it does not require compaction.
The sequence I guess must be starting from low point toward upper point as to make building connections and keep the system running.
Best Regards,
Rafael
Hi Miklos,
What you actually need is a good and viable Traffic Management System. You need to study how you can accomplish your work without causing disruption or cutting the access to the people living in the village. For example you can only close half of the road at a time and leaving half open so the villagers can still pass.
Regards,
Daniel
Email: PPadmin@planningplanet.com
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