Related illustrations

0416

Horizontal projection

· p. 75

Three schematic roof-framing cross sections illustrate rafter span measured by horizontal projection rather than along the sloping member. The upper diagram shows a 20-foot-wide gable roof with a 10-foot horizontal rafte

1380

Channeled vents versus cross ventilation

· p. 250

Two roof-to-wall cross sections compare channeled ventilation with cross ventilation for cathedral ceilings and flat roofs. The left drawing shows air entering a soffit vent and traveling up a sloped shingle roof through