subbase
Noun
Meaning
(architecture) The lowest projecting part of a baseboard, a pedestal or a similar construct.
(mathematics) A certain subcollection of a topological space
Source: en.wiktionary.orgSynonyms
Antonyms
Hypernyms
Examples
24: quadrovigesimal The Sko languages have a base-24 system with a subbase of 6. 32: duotrigesimal main Ngiti has base 32. 60: sexagesimal main Ekari has a base-60 system.
Concrete is a rigid pavement, which can take heavier loads but is more expensive and requires more carefully prepared subbase.
Modern pavements are designed for heavier vehicle loads and faster speeds, requiring thicker slabs and deeper subbase.