The complete manual contains 4 parts and costs 25 Euro plus VAT. Alternatively you can order only part 1 for 7 Euro plus VAT.
The manual is only available in German.
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Part 1 - 4
Part 1 Technische Regeln
43 pages
Part 2 Verwahrungen
48 pages
Part 3 Abdeckungen
48 pages
Part 4 Dächer und Fassaden
88 pages