Question 1

Is it free?

Accepted Answer

Yes. No sign-up, no limit and no watermark. It is made by Trestle Path Analytics, whose paid product reviews whole schedules; this page is free so that a planner can check one duration, or a pasted list, without either.

Question 2

Is anything I type sent anywhere?

Accepted Answer

No. Every calculation happens in this page. Your own rates and settings are kept in this browser's storage so they are there next time, and nowhere else.

Question 3

Where do the rates come from?

Accepted Answer

From published production tables of public road agencies (several publish the rates they set contract times with, measured on their own contracts), from equipment-performance methods worked from first principles, and from published industry guidance. No single table is copied: each range combines several sources, and each work item says what kind of source it rests on, its region and its year. Open it in the Rate library to see how far the sources agree.

Question 4

Can I use it outside North America?

Accepted Answer

Yes. Units switch between metric and imperial, the working week is whatever days you tick (Sunday to Thursday included), holiday sets cover several countries and take your own dates, and the season can be scored for any location from its monthly temperature and rainfall. The rates themselves come mostly from North American and UK sources: where your market works differently (labour-intensive methods, different plant), save your own rates.

Question 5

Which kinds of work does it cover?

Accepted Answer

Civil and infrastructure work: roads and highways, bridges and structures, drainage, water and sewer, pipelines, rail and transit, airports, renewables, site civil, and tunnels and marine work, where the calculators work the rate out from the machine and the cycle because published tables are thin. Choose a sector at the top of the checker to see its work first. Building and industrial trades are not covered yet: their best-known figures sit in commercial labour manuals that this page does not copy. Save your own rates from your records for those.

Question 6

How should I read "Faster than the fast end"?

Accepted Answer

That the duration needs a production rate better than the best comparable jobs in the sources, every day, with no lost time. It is not proof the duration is wrong: a bigger crew, longer shifts or a method the table does not cover can explain it. It is the point at which the basis of the duration should be asked for.

Question 7

What does a review comment from this page say?

Accepted Answer

What the duration implies (a rate per crew-day), what comparable published production is and where it comes from, what that gives for the quantity, and what to provide or explain. It comments on the duration and its basis, not on how the work should be done: means and methods stay with whoever is building it.

Question 8

Why is weather not one of the site conditions?

Accepted Answer

Because it is a calendar question. A rate describes a worked day; how many worked days a month offers depends on the season, and the season moves when the dates move. Tab 06 counts the days lost month by month and gives finish dates that include them.

Question 9

What can it not see?

Accepted Answer

The site. Haul routes, ground conditions, access, the crew's experience, the plant actually on site and the work windows of the permits all move production more than any table. Use the range as a check and the calculators to build a rate from the job's own numbers.

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