This part of NS 3420 covers the operation and maintenance of various buildings and facilities, such as outdoor sports and activity facilities for summer and winter operation, Text deleted. as well as for roads.
NS 3420-Z-2014+A1-2016 history
2019NS 3420-Z:2019 Specification texts for building, construction and installations — Part Z: Operation and maintenance
2017NS 3420-Z:2017 Specification texts for building, construction and installations — Part Z: Operation and maintenance
2014NS 3420-Z:2014 Specification texts for building, construction and installations — Part Z: Operation and maintenance
2008NS 3420-Z-2008 Specification tests for building,construction and installations Part Z:Operation and maintenance
2007NS 3420-CK-2007 Specification texts for building and construction Part CK:Maintenance and operation of parks and landscape