GURPS Spaceships Design Spreadsheet

[DaltonS]

I am currently designing a Mars base that is largely underground, and I have several suggestions:

1. All propulsion systems should be filtered out when a "Building" Orientation Design Option is selected.
2. Systems that should not be "Underground" include Solar power systems (this includes panels, mirrors and boilers), Weapon systems

   unless either the entire building is underground (in which case top-facing fixed mount or any turret weapons can be installed in upper level section of the basement), or unless they’re a third of a spinal battery or a ghost particle beam.
   

   Pyramid 3/43: Alternate GURPS, Alternate Spaceships p.10

   and Enhanced/Multipurpose/Tactical Comm/Sensor Arrays (they need a line-of-sight). Some Hangar Bays may be underground if at least one isn't (or 3 if you want a larger door) in the current or a connecting section.

3. Armor: A building requires a minimum of one Armor system per section, representing its structural composition.
   

   Pyramid 3/43: Alternate GURPS, Alternate Spaceships p.10

   Can this Armor use the Spread dDR option.
4. If any system in an Upper or Middle section of a "Building" is "Underground", shouldn't the systems in the sections below it automatically be set to "Underground"?

Dalton “now where's that shovel?” Spence