Flex TPO Enhanced Wind Uplift - Manual (Page 2)

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2) Approved Decks (wind speeds to 80 mph)
a) 22 gauge steel
b) Structural concrete (3000 psi)
c) Wood Plank (1 ½” min.)
d) CDX Plywood (5/8”min.)
e) OSB (7/16”min)
f) Lightweight Insulating concrete over steel deck
3) Approved Decks (wind speeds to 90 mph)
a) 22 gauge steel
b) Structural concrete (3000 psi)
c) Wood Plank (1 ½” min.)
d) CDX Plywood (15/32”min.)
e) Lightweight Insulating concrete over steel deck
4) Approved Decks (wind speeds to 120 mph)
a) 22 gauge steel
b) Structural concrete (3000 psi)
c) Wood Plank (1 ½” min.)
d) CDX Plywood (15/32”min.)
e) Lightweight Insulating concrete over concrete deck
B. Fastening Criteria:
Mechanically Fastened Roof Systems
1) Wind Speeds to 72 mph.
All decks minimum of 2 perimeter sheets. 8’ wide or 10’ wide field sheets Fasteners
12” o.c.
2) Wind Speeds to 80 mph.
Structural concrete decks Minimum of 4 perimeter sheets. 8’ wide or 10’ wide field sheets.
Fasteners 12” o.c.
Steel and Wood Decks Minimum of 3 perimeter sheets. 8’ wide or 10’ wide field sheets. Fasteners
12” o.c.
3) Wind Speeds to 90 mph.
Structural concrete decks, Steel and approved Wood Decks. Minimum of 3 perimeter
sheets. 8’ wide sheets fastened 12” o.c., 10’ wide sheets fastened 6” o.c.
4) Wind Speeds to 100 mph.
60 mil minimum membrane thickness.
Structural concrete decks, Steel and approved Wood Decks, Minimum of 2 perimeter
sheets fastened 6” o.c. 8’ wide sheets fastened 12” o.c. 10’ wide sheets fastened 6” o.c.
Adhered Roof Systems
1) Wind Speeds to 80 mph.
a) Polyisocyanurate Insulation Board (20 psi Min 1 ½” thick) 11 fasteners per 4’x 8’ board.