Collapsing Deck

Structural deadfall in a Derelict or black-site.

Derelicts have a way of remembering why they were abandoned. A deck panel goes weak at the seams, the cross-braces rust through, and the first crew to walk the hall learns what the previous crew learned. Sometimes the trigger is weight; sometimes it is a shock that has been waiting years to land. Either way, the room ends up one floor lower, and anyone still on the panel comes down with it. The tell is a bow, a hairline crack, or a dust-gust that lifts when no one has walked near it.

Rules Reference

FieldValue
Detect / Dc15
Detect / NoteMechanics (DC 14) reads the cross-brace rust; Engineering (DC 14) reads the seam-bow.
Detect / SkillPerception
Prevented ByBraced panel, Bypassed load path
ResetManual; requires new panel and cross-brace.
Save / Dc16
Save / NoteAcrobatics (DC 16) lets the PC ride the panel down and roll clear on a successful check.
Save / TypeReflex
Trigger / DetailFails on a sustained weight load, on a percussive vibration (heavy footfall), or on a direct hit.
Trigger / Typeweight / vibration / weapon-hit
Categoryhazard

Disarm

dc: 18

FieldValue
dc18
noteBrace the panel with a salvage beam; takes 2 rounds and a tool kit.
skillMechanics

dc: 18

FieldValue
dc18
noteBypass load to an adjacent beam; riskier than Mechanics.
skillEngineering

dc: 16

FieldValue
dc16
noteWalk a light rig across first; if it holds, the crew can follow the rail.
skillDrone Ops

Effect

description: Fall into the deck below; +1d6 per additional story.

FieldValue
descriptionFall into the deck below; +1d6 per additional story.
modifier-2d6 bludgeoning (per story)
targethp

description: Lands in debris; standing costs a move action.

FieldValue
descriptionLands in debris; standing costs a move action.
modifierProne
targetcondition

description: Room below is a mess; further deadfalls possible.

FieldValue
descriptionRoom below is a mess; further deadfalls possible.
modifierDifficult terrain (debris)
targetenvironment

Mitigation

description: Mechanics brace or Engineering bypass before crossing.

FieldValue
descriptionMechanics brace or Engineering bypass before crossing.

description: Distribute weight one at a time across a known-good rail.

FieldValue
descriptionDistribute weight one at a time across a known-good rail.

Severity Tiers

damage: 1d6 bludgeoning, prone

FieldValue
damage1d6 bludgeoning, prone
saveDc13
tierhairline

damage: 2d6 bludgeoning, prone

FieldValue
damage2d6 bludgeoning, prone
saveDc16
tierindustrial

damage: 4d6 bludgeoning + 1 level, prone

FieldValue
damage4d6 bludgeoning + 1 level, prone
saveDc19
tierstacked