Tony M Jan 29, 2019:

@ Asker There is an ambiguity in EN here that your wider context may well be able to clarify: because one noun qualifying another stays in the singular, we have no way of telling here if this is 'the layout of the risers for each individual service' OR 'the layout of the services that are all run together in one riser' — typically, a 'tremie / gaine technique'.

I had originally pictured the latter, but then you added context with dry risers etc. tends to favour the former. Either way, one could be referring to 'the layout of the different services withon a single riser' OR 'the layout of all the various risers'.

Note that in some not-unrelated technical contexts 'layout' is often rendered by 'implantation'.

florence metzger Jan 29, 2019:

conduite technique verticale ou si on prend en compte air balance conduite verticale de ventilation..

Dominique Stiver (asker) Jan 29, 2019:

je rencontre maintenant dry/wet risers qui me confirme colonnes sèches/colonnes humides donc parfait... d'autres questions suivront ! Merci

Odile Breuvart Jan 29, 2019:

ok :)

Dominique Stiver (asker) Jan 29, 2019:

cela correspond à la seule chose que j'étais en mesure de m'imaginer parlant d'un bâtiment...