Dwarf Fortress Bug Tracker - Dwarf Fortress
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0003219Dwarf FortressDwarf Mode -- Environmentpublic2010-09-14 07:402010-11-24 11:09
0003219: frozen ramps lack floor.
If a ramp tile covered in water freezes it will not have a floor on the z-level above it. This then proceeds a produce a lot of weird bugs including heavy pathing errors (you create a one way road and the system can't handle that)And creature dodging into it get stuck inside the ice, just to name a few.
1 Embark on an area that freezing during the winter and has water.
2 dig out a few ramps
3 flood the ramps
4 wait till the tiles are frozen, you now have bugged tiles.

For bonus
5 dig (not channel) out these tiles you now have one way ramps.
0.31.12, floor, Frozen, ice, ramp, ramps
duplicate of 0001558new  When water freezes/thaws on a ramp tile, upward ramp is left without corresponding downward ramp 
Issue History
2010-09-14 07:40thijserNew Issue
2010-09-14 07:54thijserTag Attached: 0.31.12
2010-09-14 07:54thijserTag Attached: floor
2010-09-14 07:54thijserTag Attached: Frozen
2010-09-14 07:54thijserTag Attached: ice
2010-09-14 07:54thijserTag Attached: ramp
2010-09-14 07:54thijserTag Attached: ramps
2010-09-14 23:28thijserNote Added: 0012643
2010-09-14 23:30thijserNote Added: 0012644
2010-09-15 00:24fivexNote Added: 0012645
2010-09-16 10:23thijserNote Added: 0012713
2010-09-17 01:09amlorNote Added: 0012741
2010-09-17 03:48thijserNote Added: 0012746
2010-11-24 11:09FootkerchiefRelationship addedduplicate of 0001558
2010-11-24 11:09FootkerchiefStatusnew => resolved
2010-11-24 11:09FootkerchiefResolutionopen => duplicate
2010-11-24 11:09FootkerchiefAssigned To => Footkerchief

2010-09-14 23:28   
I have a save but I think this is easy enough to duplicate (one way to do this is embark on any frozen sea). But if it's really needed I can get a save.
2010-09-14 23:30   
And I found this bug trough it's supposed to be resolved.
http://www.bay12games.com/dwarves/mantisbt/view.php?id=2487 [^]
2010-09-15 00:24   
Alternatively, embark on a freezing/cold biome with an aquifier and expose an aquifier tile to open air(the floor above it should be outside light aboveground) and then channel it.
Even if it wouldn't create a ramp it still does it.
2010-09-16 10:23   
And I'm suprised there are so few people mentioning this it clearly shows people don't embark on freezing biomes
2010-09-17 01:09   
Yeah, i have the same bug in 0.31.13. And 2487 is not resolved because it's a clone of http://www.bay12games.com/dwarves/mantisbt/view.php?id=1558 [^] .
2010-09-17 03:48   
I think it's best if a relationship is shown but this stays open to show that it's still there in 31.12/31.13. And it's getting quite annoying while setting up a system which uses a lot of ice.