Reinforced concrete ribbed floor slabs of 300 mm depth for buildings and structures. Specifications
NORMA vydána dne 1.1.1988
Designation standards: GOST 21506-87
Note: NEPLATNÁ
Publication date standards: 1.1.1988
The number of pages: 88
Approximate weight : 295 g (0.65 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST