Instrument
INS-01
Revision
r0.3 · pre-alpha
Status
In development
Target release
Q3 2026
Expansion Gap Calculator
Derives perimeter and intermediate expansion allowances for engineered timber, hybrid and vinyl plank under specified environmental deltas.
Reconciles product coefficient, room geometry and seasonal humidity range into a compliant movement schedule.
Preview interface · not yet operational
beta://library/expansion-gap-calculator
INS-01 · r0.3 · pre-alpha
Input parameters
Product family
Engineered timber · 15mmLocked
Room length
mm
12,400Locked
Room width
mm
6,800Locked
Installation RH
%
48Locked
Service RH range
%
35 – 65Locked
Restraint condition
Floating on acoustic underlayLocked
Perimeter allowance schedule
15mm ↕Room · 12.4m × 6.8m↕ 15mm
15mm ↔15mm ↔
Output register
01
Perimeter gap (mm)
Awaiting · release
02
Intermediate break threshold (m)
Awaiting · release
03
Recommended profile family
Awaiting · release
04
Movement schedule (PDF)
Awaiting · release
Session · read-only · logged
Substrate & movement
Planned capability
- 01Product library synchronised with current supply capability.
- 02Automatic detection of runs exceeding intermediate break threshold.
- 03Export as annotated setout drawing.