Hollow flooring block
7-3-120
Hollow concrete or earthenware block used as a component in lightweight concrete floor construction.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
7-3-120
Hollow concrete or earthenware block used as a component in lightweight concrete floor construction.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM