STATIC EXAMPLE
Declared complete stack: 12 in support + 10 in mattress + 2 in topper
- Status
- estimated complete declared stack
- Known subtotal
- 24 in
- Final top surface
- 24 in
FIT LAB / HEIGHT TOOL 04
Add the stack. Do not invent the missing layers.
Bed Height Estimator v1 adds explicit vertical contributions from the floor to the top sleep surface. It requires an explicit floor-to-support height and mattress thickness before it will report an assembled top-surface height, and it never recommends an ergonomic, accessibility, or health target.
INTERACTIVE ENHANCEMENT
Build an explicit vertical stack
JavaScript is optional. Static worked examples and methodology remain visible below.
STATIC / NO JAVASCRIPT REQUIRED
Complete and incomplete stacks behave differently
STATIC EXAMPLE
Declared complete metric stack: 30 cm support + 25 cm mattress
- Status
- estimated complete declared stack
- Known subtotal
- 55 cm
- Final top surface
- 55 cm
STATIC EXAMPLE
Only the support surface is known
- Status
- partial stack
- Known subtotal
- 12 in
- Final top surface
- Not reported
Missing: mattress-thickness
Stack not declared complete, so the known subtotal is not labeled as final.
STATIC EXAMPLE
Base and mattress known, but stack not declared complete
- Status
- partial stack
- Known subtotal
- 22 in
- Final top surface
- Not reported
Stack not declared complete, so the known subtotal is not labeled as final.
METHOD / STACK SEMANTICS
What counts toward the height?
- Start with an explicit vertical measurement from the floor to the surface that supports the mattress or next declared layer.
- Add explicit mattress thickness.
- Add only topper or other layer thicknesses that are actually supplied.
- If a required role is missing, report the known subtotal but no assembled top-surface height.
- If the user has not declared the stack complete, the known subtotal remains partial even when the two required roles are present.
GENERATION C / SHARED CONTEXT
Fit Lab session boundaries
A portable, memory-only context layer that keeps explicit visitor inputs separate from derived tool outputs and never turns one tool's conclusion into another tool's evidence.
- Memory-only by default
- Derived results are not evidence
- ICU owns account + Save