DF Gameplay Questions / Floor hatches on freezing maps.
« on: April 24, 2008, 04:08:00 am »
To grow non dwarven crops I dug 3x3 shafts down in the earth. These are considered outside and light. So make them inside, then build a glass ceiling, with a glass hatch in the middle.
For irrigation purpose the water is constantly moved on the glass ceiling/glass hatch. WHen I want to irrigate I pull a lever, thus opening the hatches and the fields are flooded.
code:
z=0
.....
.fff.
.fff.
.fff.
.....z=1
.....
.ggg.
.ghg.
.ggg.
..w..
..w..
..w..
f is the farm
g is a glass flor
h a glass hatch
and w the way water enters the reservoir
The big problem is, that the tiles with the glass floor/hatch are themselve still above ground so the water freezes in winter, deconstructing the hatch, when it unfreezes 
So is there anyway of fixing this in time, besides pumping more water out, than is flowing in and putting a second glass floor above the current one?
On my current save the water is already frozen, so I would prefer a method that prevents the destruction of the floor hatch this one time. Putting another glass ceiling in should be a breeze after that.

