Learn about the basic types of pitched roofs and roof frame designs.
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Trusses are manufactured in many different designs. Some are designed for a particular type of roof type or to fulfill a particular structural need. Others are made to match a span. The trusses for shorter spans usually have fewer web members than the trusses intended for larger buildings. The truss types illustrated below offer just a sample of some of the more common types.
Gives a vaulted or cathedral ceiling.
Provides a living space in the attic.
A clerestory truss, pronounced "clear story," allows for a high wall with a band of narrow windows along the very top.
For very wide spans of 54 to 80 feet.
Excerpted from Do It Yourself Home Improvement
© Dorling Kindersley Limited 2009
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