German standard DIN 4701 rules for calculating building heat demand DIN 4701 Regeln fur die Berechnung des Warmebedarfs von Gebauden - Grundzuge des Neuentwurfs.

Compares the new draft standard with the 1959 original. More sophisticated mathematical methods and meteorological data processing has necessitated the revision. The new standard incorporates SI units, uses resistance calculations and develops computer compatible stationery