Russian standards
System of design documents for construction. Symbols for presentation of pipelines
Document status: Active
System of building design documents. Pipelines. Symbols for presentation
Document status: Replaced by GOST 21.206-2012
System of building design documents. Centralized power supply control. Graphical and letter designations of the type and contents of information
Document status: Active
System of building design documents. Water supply and sewerage. Outside networks. Working drawings
Document status: Replaced by GOST 21.704-2011
Jigs for machining holes of moulding boxes and pattern plates. Specifications
Document status: Active
