Where the roof consists of half trusses (mono-pitched roof), the span of the half truss shall be taken as the half span (h), and one criterion from sections 13.2 to 134 shall be applied.

The apex of the half truss shall be braced to the supporting structure with diagonal bracing in the vertical plane as specified for half truss fixing for apex bracing in Figure C5-04-12-08 and Figure C5-04-12-09.