Forces In Gable Roof

House roof framing loads.

Forces in gable roof.

Roof sag or roof collapse forces. Also known as pitched or peaked roof gable roofs are some of the most popular roofs in the us. Collar tie is a colloquial term for collar beam. We include photographs of collapsing wood framed roofs and photo sequences.

A gabled roof is a roof with two sloping sides that come together at a ridge creating end walls with a triangular extension called a gable at the top. Gable roofs will easily shed water and snow provide more space for an attic or vaulted ceilings and allow more ventilation. Parts of a roof the main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang. Houses with gable roofs may also have vents located on the side of the house as high as possible within the peak of the gable.

The roof of a house can t do its job if it doesn t remain where it s supposed to be and a variety of forces are always at work trying to make the roof fail to stay in. Whether round triangular or rectangular. This article describes explains the directions of forces in roof structures illustrating downwards force horizontal thrust and the causes of rafter sags rafters that disconnect from the ridge or top plate and why a sagging roof pushes the building walls outwards at the wall top. Pros of gable roofs.