This is how I would translate it.

Example Sentence

The sewage riser lines and septic tank risers must be protected from water and debris flow damage; risers should be on the landward side of a pile… https://www.fema.gov/sites/default/files/2020-08/fema55_voli...



--------------------------------------------------
Note added at 21 mins (2022-01-12 14:23:52 GMT)
--------------------------------------------------

Note que em ambas as definições abaixo estão implícitos dois níveis diferentes (da estrutura ou do solo).

What is a sewer riser?
When a section of pipe is connected on the top of a city sewer, and runs on a direct vertical path, it is considered a riser. That is to say, a connection that runs directly from the top of the public sewer towards the roadway above. Typically a riser is left 12′ below grade, then the house sewer connection begins. https://www.balkanplumbing.com/sewer-riser-connection-house-...

O que é um recalque na construção civil?

Engenheiros e arquitetos conhecem bem o termo recalque nas fundações. Na arquitetura e na engenharia civil tal expressão é usada quando numa edificação ocorre um rebaixamento devido ao processo de consolidação do solo sobre sua fundação, causada pelo peso da estrutura. https://treinamento24.com/library/lecture/read/36215-o-que-e...

Recalque, em instalações hidráulicas = booster pumping

https://www.google.com.br/search?q=sewerage booster pumping ...

https://www.google.com.br/search?q="recalque" "booster pump"...

:)
https://www3.epa.gov/npdes/pubs/force_main_sewers.pdf

--------------------------------------------------
Note added at 1 hr (2022-01-12 15:17:48 GMT)
--------------------------------------------------


Force main Definition & Meaning - Merriam-Websterhttps://www.merriam-webster.com › ...
Traduzir esta página
The meaning of FORCE MAIN is a principal conduit (as in a sewer system) through which water is pumped as distinguished from one through which it flows by ..