0003468: Mining created obsidian pillars causes created floor above to crash down

ID	Project	Category	View Status	Date Submitted	Last Update

0003468	Dwarf Fortress	Dwarf Mode -- Environment	public	2010-10-25 03:26	2017-11-01 15:13

Reporter	DrunkenMonk	Assigned To	Loci
Priority	normal	Severity	tweak	Reproducibility	have not tried
Status	resolved	Resolution	no change required
Product Version	0.31.16

Summary	0003468: Mining created obsidian pillars causes created floor above to crash down
Description	Covering magma with water will create pillars on the water level due to splashing magma. Mining these pillars causes the floro above to fall down in a cavein. There shouldnt be a floor above any more than a constructed pillar will cause a pseudo-floor.
Steps To Reproduce	Locate a magma pipe. Drill a hole from a aquifer or river source. Allow the water to cover the pipe from one side, to allow the obsidian cover to attach to the side. When water spills diagonally into the lava, a cave in occours. On some of these, the splashed magma will create a wall on the water level. digg these walls to reproduce the cave-in.
Tags	No tags attached.

Date Modified	Username	Field	Change
2010-10-25 03:26	DrunkenMonk	New Issue
2014-12-30 20:30	~~user6~~	Relationship added	related to 0008444
2017-11-01 15:13	Loci	Note Added: 0036834
2017-11-01 15:13	Loci	Status	new => resolved
2017-11-01 15:13	Loci	Resolution	open => no change required
2017-11-01 15:13	Loci	Assigned To	=> Loci

Loci 2017-11-01 15:13 viewer ~0036834	The floor above is intentional, to keep items and creatures from falling into the pillar tile. You can use a channel or ramp designation to dig out the pillar (and floor above) without creating a cave-in. You can use an upstair or up/down-stair designation to mine out the pillar while leaving the floor above intact.