Measuring walking time: how much of the day goes to the gate, the hoist and the washroom
The tower superintendent hears that the upper-floor finishing trades lose half an hour reaching work. The estimate includes ordinary access, but nobody has separated the gate walk, the hoist queue and the ride. Management wants a number before considering changes to the site arrangement.
Measure defined trips and the people actually making them, then distinguish walking, queuing and riding. A whole-site headcount multiplied by the longest observed journey can greatly overstate the result. The useful page shows where the time goes, when it was observed and which routes deserve assessment. It supports layout and access decisions without deciding paid-time treatment, equipment capacity or the controls needed for a proposed change.
Build a travel baseline people can check
- Define the route and event. Name start and finish points, direction and time of day. Include relevant gate-to-workface, facility, cut-station and return trips. Keep the morning journey separate from repeated trips during the shift so it is not counted twice.
- Choose observations across the week. Explain the purpose to the foremen and workers, and observe through approved safe access. Include different busy periods and locations. Record conditions and missed observations rather than calling one quiet mid-afternoon journey representative of every shift start.
- Time the components separately. Record walking, queue and ride where practical, with a clear measurement basis. Keep a changed destination or interruption identified. An equipment wait and a long walking route may need different interventions even when their combined minutes match.
- Count actual users and frequency. Establish which crews use that route and how often from the observed work arrangement. Use measured worker-trips where available. If extrapolating a sample, show the assumed frequency and population rather than silently multiplying by every person on site.
- Summarize with labelled units. Multiply mean trip minutes by the matching worker-trips, then divide by sixty for person-hours. Retain individual components and the observation period. Show variation and gaps beside the total so apparent precision does not hide a weak sample.
- Take two priorities to the decision meeting. Identify the routes with significant recurring effort and their actual constraints. Ask responsible leads to assess potential layout, booking or equipment changes. Keep essential facilities accessible, and measure the changed arrangement before claiming the baseline hours were all recovered.
Common mistakes
- Multiplying the longest journey by unrelated headcount.
- Adding the same route in both travel and waiting totals.
- Calling one convenient observation a whole-week measure.
- Reducing access to necessary facilities to improve a number.
Checklist
The one-page travel baseline
- Defined route, period and direction.
- Walking, queue and riding components.
- Actual users and trip frequency.
- Person-minute calculation with assumptions.
- Variation and unobserved conditions.
- Two assessed priorities and a follow-up measure.
Check your understanding
Only one crew uses the upper-floor route you timed. Should the measured average be multiplied by total site headcount?
