Rationale

1. Adding TRIM to the list of product applications of fiber-cement sheets in the scope. This is consistent with phrasing in IBC and NBCC codes where fiber-cement cladding is referred to and the product applications of siding, soffit and trim are named... the present scope does name siding and soffits but was missing trim, so we are adding trim. 2. Deletion of long withdrawn non-astm standards from the list of referenced standards. These are not relevant to the present content and use of C1186, providing no benefit as being referred to.