ABSTRACT
Pitched roofs have their surfaces sloping at an angle greater than 100 to provide a run-off for rainwater at the eaves. The roofs may be pitched on one side only ( monopitch ), on two sides ( dual pitch ) or on three or four sides (hipped). In addition, pitched roofs may be designed where the lower portion of the roof is pitched at a steeper angle than the upper portion (mansard). On dual pitch roofs the two ends of a detached building that are not covered by the roof structure are termed the gable ends.
