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40d:Screw pump
A screw pump can remove water from one location. Its size is two tiles by one tile, and it can be either manually operated by a dwarf with the pump operator job or by using a water wheel or windmill (along with axles and gear assemblies to move the power). The direction you want the water to travel must be chosen at the time of construction.
Construction requires an enormous corkscrew, stone blocks, and a pipe section.
Having specified the direction of travel, you must ensure that the source side of the pump is placed adjacent to and above (in the Z axis) a liquid. The screw pump will draw the liquid up from below, and distribute it out of the other side of the pump.
Example Layout:
TOP VIEW SIDE VIEW
█████████
█████,,,, █████████
≈≈≈≈█,███ <--pumping ≈≈≈≈%%
≈≈≈≈%%··· ██████≈≈≈ reservoir (below)-->
≈≈≈≈██···
██████···
<--pumping (same level)
reservoir (below)-->
Note that it is critical that the rear side of the pump be directly adjacent to "Open Space" that is directly above a filled pool of liquid.