Random sample locations and times

ASTM D3665 · Tex-225-F

Calculator

ASTM D3665 · Tex-225-F

One random sample per sublot, by tonnage, by station and offset, or by time, from a seed you can record so the list can be made again.

Units US customary SI (metric)

Lot

Sample by

Number of sublots

One sample in each.

Station at the start of the lot, ft

As a distance: station 12+50 is 1250 ft. If stationing isn’t continuous, adjust the results.

Sublot length, ft

Sublot width, ft

The width paved, for the offset.

Keep clear of a joint or edge by, ft (optional)

Tex-225-F moves an offset within 2 ft of a longitudinal joint or the edge by no more than needed. Blank for no adjustment.

Random numbers

Seed

Any whole number. Record it: the same seed gives the same list. Pick it before the work is done, and don’t reroll for a nicer list.

Example values: the Tex-225-F pavement core example (four 1,640 ft sublots, 12 ft wide). Use your own seed.