A roof that rises by inclined planes from all four sides of a building. The sloping roofs on all four sides have two pitches, with the lower pitch usually very steep and the upper pitch less steep.

A roof which rises by inclined planes from all four sides of a building. The sloping roofs on all four sides have two pitches, the lower pitch usually very steep and the upper pitch less steep.

also called the curb roof. A roof in which the rafters, instead of forming a Λ, are broken on each side into an elbow. It was devised by François Mansard, the French architect, to give height to attic [..]

A four-sided hipped roof featuring two slopes on each side, the lower slopes being very steep, almost vertical, and the upper slopes sometimes being so horizontal that they are not visible from the ground. The Mansard roof was named after the French 17th-century architect Francois Mansart (1598-1666), who popularized the form.

A type of roof containing two sloping planes of different pitch on each of four sides. The lower plane has a much steeper pitch than the upper, often aproaching vertical. Contains no gables.