When 4 fasteners per 4' X 8' sheet is specified.
(1 fastener/ 8 sq. ft.)
When 8 fasteners per 4' X 8' sheet is specified.
(1 fastener/ 4 sq. ft.)
When 11 fasteners per 4' X 8' sheet is specified.
(1 Fastener/ 2.9 sq. ft.)
(Use 8-fastener spacing and add center row of 3)
*(based on FM Reports J.I. 1T6A2.AM and J.I. 2M3A2.AM)