Russian standards PDF
GOST 20372-2015
Reinforced concrete rafter and longitudinal beams. Specifications
Document status: Active
€10
GOST 21.201-2011
System of design documents for construction. Symbol graphics elements of buildings, works and structures
Document status: Active
€10
GOST 21.205-2016
System of design documents for construction. Symbols of elements of pipeline systems of buildings and structures
Document status: Active
€10