House nerves

Blipped at my brother's new building, where we were doing various things together before the laying of the floors and ceiling materials next week. My job included taking also several photos of everything that will remain invisible from now on. Just for future reference, that is.

The red and blue tubes are for conveying hot and cold water. On the floor lies the network of geothermal heating pipes; the pair of black tubes are the main ducts for the intake of geothermal heat.

A previous entry from April shows what the building looks like.