01 / ISSA PRODUCTION TIMES
Estimate each cleaning task.
We calculate sweeping, damp mopping, scrubbing and vacuuming by zone. Published reference
rates include 7.0, 11.2, 10.14 or 7.18, and 21.0 minutes per 1,000 ft², respectively. The
scrubber rate depends on cleaned floor area.
02 / ONSHIFT ASSUMPTIONS
Adjust for real buildings.
Zone sizes, cleaning frequency, clutter (1.00–1.30×), 15% prep/travel, 85% eligible-task
coverage and 3 hours of monthly robot care are planning assumptions, not ISSA standards.
03 / ROBOT FEASIBILITY
Check the nightly route.
Machine run time is separate from cleaner-hours freed. We use 45% of manufacturer-rated speed
for initial sizing and check an eight-hour window. Layout, carpets, access between floors
and obstacles must be checked on site.
Reference: ISSA 540 production times as reproduced in the supplied review materials;
some rates and assumptions require confirmation against current ISSA 612 and actual site conditions.