Type of microporous sheath (IW) - From a traditional terminology to an adapted one

Descriptor : Type of microporous sheath (IW)

Microporous sheath: Thin skeletal plate supported by carcass and pierced by micropores (lesser diameter than pores).

IW: Inner wall.

Attached (continuous or discontinuous): Attached: Microporous sheath attached directly to carcass pore lintels.

Carcass: Part of wall on intervallum side.

Lintel: Skeletal structure separating and bounding adjacent pores.
Independent: Independent: Microporous sheath supported by short beams arising from carcass pore lintels.

Lintel: Skeletal structure separating and bounding adjacent pores.

Carcass: Part of wall on intervallum side.
isn't included in the term

Type of additional sheath (IW)
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 |_ Type of microporous sheath (IW)