domová kanalizácia 3 [vynechat] house drains kanalizácia 1 [vynechat] pipeline networks 1 [vynechat] potrubné siete 1 [vynechat] sewerage 1 [vynechat] technické zariadenia budov 1 [vynechat] technological equipment of buildings 1 [vynechat] vodovodné inštalácie 1 [vynechat] water supply installations 1 [vynechat]