Field glossary

t/NMAS

Lift-thickness-to-NMAS ratio; a minimum near 3 (fine) to 4 (coarse) sets the thinnest lift that will compact

Used across 2 Anvilfield field guides, most in Paving.

Also defined as

Lift-thickness-to-nominal-maximum-aggregate-size ratio that sets the thinnest lift that will compact
Ratio of lift thickness to NMAS; a minimum near 3 (fine) to 4 (coarse) is commonly specified

Where this shows up