Pipes systems and manhole woks made of concrete, unreinforced, steel fibre and reinforced for the conveyance of waste water - Design, proof of load bearing capacity and fitness for use, installation
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Installation of lightning protection, surge protection and earthing systems
Draft Document - Heating systems in buildings - Energy performance of buildings - Overall energy use, primary energy and CO2 emissions; German version prEN 15315:2005