Applied Research -  Field Tests -  Ground Contact
WEATHER AND TERMITES ICON

Field Decay Stakes


Test Method:AWPA E7-93-Standard Method Of Evaluating Wood Preservatives By Field Tests With Stakes.

Field decay stake testing is the most comprehensive means for evaluating the efficacy of wood preservatives in wood under severe, or very severe ground contact conditions. Wood foundations, utility poles, building poles, and land or fresh water pilings may undergo similar exposures. Treated (and untreated) wood stakes are inserted half-way into the ground. At specified time intervals the stakes are removed and rated for severity of decay and insect damage. They are placed back into the ground after each rating until light bending pressure causes them to fail.
FIELD DECAY STAKES

WEATHER AND TERMITES ICON

Depletion Rate Stakes


Test Method:AWPA E7-93 (modified)

Stake depletion rate testing evaluates the persistence of the wood preservative while under ground contact. Stake depletion rate specimens are inserted half-way into the ground. At specified intervals a number of specimens are removed from the field and analyzed for preservative content to determine the rate of preservative depletion.
DEPLETION RATE STAKES
Rows of depletion stakes at our Hawaii field site.

WEATHER AND TERMITES ICON

Posts


Test Method:AWPA E8-96 Standard Methods For Field Tests With Posts


POST SPECIMEN1
Post specimens ready for internment in the field.

POST SPECIMEN2
Post specimens at our Florida field test site.

POST SPECIMEN3
Post specimens pulled to determine decay and insect damage.

POST SPECIMEN4
Taking an increment bore sample.

POST SPECIMEN5
Failed post specimen.