Brief definition
Cost group 410 (KG 410) under DIN 276 comprises drainage, water and gas installations — pipe routes, connections, and related components of building services.
Relevance for quantity take-off and BoQ
Items are often derived from lengths, counts, and diameter classes on services and floor plans. Traceable sources are decisive for VOB bills of quantities and variation review.
Normraum relevance
Pipe lengths, connections and diameter classes for KG 410 are not read from the plan by Normraum – services symbols are not part of the detection. What comes from the as-built floor plan is the room structure: rooms with use and area under DIN 277 in the room book, with the source reference in the plan, as the basis for connection points and completeness checks.