This VDE application guide (FNN) contains minimum formal, material and personal resources requirements as well as optional criteria for building companies in underground line construction with respect to the district heating, gas, electricity, telecommunications and drinking water divisions. The relevant technical regulations and legal provisions remain fully applicable for the construction of lines and related aspects.
The term "minimum requirements" implies here that further requirements may result from technical regulaions and legal provisions or that clients may impose further requirements.

This Document is related to the following Topics (in bold):

93 CIVIL ENGINEERING
93.020 Earthworks. Excavations. Foundation construction. Underground works
93.080 Road engineering
93.100 Construction of railways
93.120 Construction of airports
93.140 Construction of waterways, ports and dykes

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