Wastewater treatment plants - Part 4: Primary treatment; German and English version prEN 12255-4:2021
Edition 2021-09

Wastewater treatment plants - Part 13: Chemical treatment - Treatment of wastewater by precipitation/flocculation; German and English version prEN 12255-13:2021
Edition 2021-07

Library objects for architecture, engineering, construction, and use (ISO/DIS 22014:2023); German and English version prEN ISO 22014:2023
Edition 2023-05

Drain and sewer systems outside buildings - Design - Part 2: Hydraulic design; German version EN 16933-2:2017
Edition 2017-12

Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 9: Lining with a rigidly anchored plastics inner layer (ISO 11296-9:2022); German version EN ISO 11296-9:2022
Edition 2023-03

Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 1: General and energy performance expression, Module M3-1, M3-4, M3-9, M8-1, M8-4; German version EN 15316-1:2017
Edition 2017-09

Drain and sewer systems outside buildings - Pumping systems - Part 2: Positive pressure systems; German version EN 16932-2:2018
Edition 2018-07

Drain and sewer systems outside buildings - Pumping systems - Part 3: Vacuum systems; German version EN 16932-3:2018
Edition 2018-07

Drain and sewer systems outside buildings - Pumping systems - Part 1: General requirements; German version EN 16932-1:2018
Edition 2018-07

Energy performance of buildings - Ventilation for buildings - Part 1: Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics - Module M1-6; German version EN 16798-1:2019
Edition 2022-03