DAVID-32 calculates temperatures and heat flows in 2- and 3-dimensional thermal bridges. The program divides the thermal bridge into small rectangular cells. The temperature in every cell is calculated (two models are used, giving an upper and a lower limit) so that the same amount of heat is entering and leaving the cell. From start, all temperatures are zero, but new temperatures are calculated over and over again until heat balance is obtained in all cells. The text is in Swedish or English.