Bond

The system of aligning tiles on the roof in relationship to each other. With straight bond, the sides of tiles form straight lines from bottom to top course. With staggered, broken or cross bond, tiles in each alternate course overlap, by half, the tiles above and below them. For installation as a quarter bond (Linea) tiles, in each alternate course overlap by a quarter of the tile width - https://goo.gl/1hQhRG page 7

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Swiss terracotta roof tiles interlock at the head and side lap and are laid in a straight bond pattern. - https://irp-cdn.multiscreensite.com/06309c93/files/uploaded/... - page 26

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They are designed to interlock at both the head and the sides and are laid in either a cross-bond or straight-bond pattern, depending on the profile. - http://shoalhavenbrickandtile.com.au/products/roof-tiles/Bor... - page 8

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Roof tiles have only three accepted bond patterns, straight bond, half bond and quarter bond. Which tiles are used will dictate which is the most appropriate bond pattern. - http://www.roofconsult.co.uk/articles/tiling/tips8.htm