Chimneys - Part 1: Design and performance; National supplement for the use of clay/ceramik flue liners according DIN EN 1457, allocation of the classification system for custom built chimneys— 5 стр.
Chimneys - Part 1: Design and performance; Supplement 2: National complement for the use of clay/ceramik flue liners according DIN EN 1457-1 and DIN EN 1457-2, allocation of the classification system for custom-built chimneys— 6 стр.
German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Installation of central heating systems and hot water supply systems— 28 стр.
