Discussions on Dams

spencermountain

 I notice though you have created a flood type in a disaster2 base - is this what you are referring to? 

 The flood type is good, I will update the 'led to flooding disaster' property of the 'Dam failure' type to point to the 'flood' type. (don't have the time to migrate the data at the moment, but will get round to it in the next few days).

I've made some changes to Dam Failure - it is now a topic itself (rather than a CVT) and is a specific event, which leads onto a flooding disaster event.

See South Fork Dam which had the South Fork Dam Failure event andthat  leads onto the Johnstown flood. 

Note how I have slightly changed the meaning of your 'Flood Cause' type - rather than being assigned to generic terms, such as 'rain' or 'dam failure', it is now pointing to a specific topic of dam failure, in this case the 'South Fork Dam Failure'.

Similarly instead of having 'rain' as a cause of a flood, it would be better to link it to a specific weather event e.g. Hurricane Katrina.  

hey cool, terrific job iain. In response to your moves here i am rethinking my http://crime.freebase.com/type/schema/base/crime/crime crime topic- which i could really use some help with now aswell.

same issue as dams- though maybe less clean a solution.  Ive made a clever cvs type that links specific crimes, criminals, and crime types -but doing it this way requires a topic for every crime a person commits, like a topic for every dam failure, but if someone has a large criminal record we would need a topic for every crime they've commited, which is crazy. is there a way to make the specific crime topic optional here do you think? im stuck. i added you as admin to the crime base This has the potential to be a really complex, though valuable type.

Great idea - I have created a Destroyed Dams type where the date and method of destruction can be noted.  For this I created a further type, Dam Destruction Method.

I hope you can make use of these new types, and add topics to them.  Thanks for joining and contributing to the Dams base. 

thanks sprocketonline,

is a merge possible?

http://www.freebase.com/view/user/spencermountain/default_domain/failed_dams

Done.

Actually, I've just added all the topics currently existing in your type to the destroyed dams type.  Your failed dams type still exists, it is up to you if you wish to delete your type.

A big modification to the way the schema works:

I realised that quite often dams are not totally destroyed when the fail.  Also most of the failed dams are patched up and are operational shortly afterwards.  It is possible for a dam to fail (and be patched up) multiple times.

This led me to rename the 'Destroyed Dams' type as 'Dam Failure' and change it to a CVT.

The 'Dam' type now has a property called 'failures' which allows multiple Dam Failures to be listed.

As a Dam is also a structure it made sense to co-type it with the 'structure' type from the architecture domain.  Amongst other things this allows the opening date and destruction date to be noted. (so if a failure did permanently destroy the dam, then the date can be noted here).

The below is a description of the process I used to add your suggestion (you should be able to do it all yourself) 

I have created a topic for Mohne Reservoir Dam and Edersee Dam (I tend to keep the dam topics seperate from the reservoir topics, Mohne Reservoir & Edersee, but link to them in the 'reservoir created' property).

I then added the 'Dam' type to these topics.

In the dam type I filled in the 'failure' property, ensuring 'bouncing bomb' was listed as the cause.

 Job done.