The gothic roof is a pointed arch formed by two similar curved roof sections meeting at a center ridge. It is used on two-story barns and also for separate free-standing
structures to provide shelter at ground level. It is adaptable to both narrow and wide structures.
Clear-span laminated or segmented rafters are supported by and anchored to the walls and loft floor or to the foundation. Segmented wood rafters are usually used for spans of 40 feet or less. Laminated wood rafters are suitable for almost all spans.
Ashley Griffin, University of Kentucky