Creep Behavior of Flakeboards Made with a Mixture of Southern Speoes

Deftection of oriented ftakeboards, random ftakeboards, and southern pine plywood was evaluated for small size bending specimens and concentrated loads applied to panels nailed on framing lumber. The ftakeboards con~ed a mixture of southern hardwoods and pine; the plywood was 3-ply l/2-inch and 4-ply ~-inch construction. Tests of both panel ~ons, all load levels and RH cycles showed plywood bending specimens with the smallest deftection increase, and both random and oriented ftakeboard bending specimens showed more increases. The plywood relative creep averaged 1.76; the ftakeboard relative creep averaged 2.26 and 2.30 for oriented and random construction, respectively. For the concentrated loading, oriented ftakeboard panels with the smallest initial deftection had the l8IFst creep after 32 days. Random ftakeboard and plywood showed less creep.