Will a queen mattress fit up my apartment stairs?

✕ Does not fit — 30.9 cm too large [why-details] > Why it doesn't fit The item exceeds the opening in every orientation — no rotation or tilt resolves this. Tightest point: Item vs Opening (width axis) Remaining clearance: -30.9 cm (-50%) [/why-details] [maneuver-details] > How to make it work The item exceeds the space in every orientation — standard entry won't work. Consider these alternatives: - Disassemble the item if possible - Check for wider doors or windows - Consider professional movers with pivot techniques [/maneuver-details] [difficulty-details] > Effort required Safety margin: Negative Operational expectation: Item exceeds the space — no handling technique can resolve the size difference. [/difficulty-details] [details-below] What we used · Medium Confidence Assumptions - Item is rigid and cannot be compressed, bent, or disassembled - No obstructions (light fixtures, handrails, trim, furniture) in the path - Maneuver assumes one person carrying — no grip width accounted for - Stairway handrails protrude a standard distance from the wall - Standard stair dimensions assumed: 178mm (7") riser, 254mm (10") tread, 2032mm (80") headroom - Some dimensions were estimated — not provided by you. Verify before proceeding. - Detected mattress, size: queen - Estimated depth, height from local_db (depth, height not provided by user) - Assumed standard stair width: 36" - Standard stair geometry assumed: 178mm riser, 254mm tread, 2032mm headroom - Handrail protrusion: 75mm per side (150mm total) - Stair slope: ~35° (178mm rise / 254mm run) - Tread nosing overhang: 25mm reduces effective tread depth All orientations tested (6 orientations) | | Orientation | Width | Height | Note | |---|------------|-------|--------|------| | ✗ | upright front-first | — | — | | | ✗ | upright side-first | — | — | | | ✗ | on side, front-first | — | — | | | ✗ | on side, side-first | — | — | | | ✗ | laid flat, depth across | — | — | | | ✗ | laid flat, height across | — | — | | Step-by-step proof (best: upright front-first) 1. Width: 0 cm item > 0 cm opening → ✗ (0 cm clearance) Limiting: stair_headroom at -30.9 cm *Measure your specific space to confirm — dimensions vary.*