Georgia CO Exam - WDO Category
If a home has an infestation of wood boring beetles on the outside of the home what are
the requirements to treat the crawlspace? - ✔️✔️You do not need to treat the
crawlspace or apply vapor barrier. Wood on the outside should be treated with a
pesticide for wood boring beetles per the label.
If conducive conditions are discovered within _________ days of treatment and a WDI
report to remedy pests or fungi in a crawl space the PMP must return and remedy the
issues free of charge to the customer. - ✔️✔️90 days
Why is excess moisture in crawl spaces such a big deal to our customers? -
✔️✔️Facilitates an environment for pests that can cause structural and health concerns
in addition to being nuisances.
T/F: Do customers breath the air from the crawlspace? - ✔️✔️True!
What are some ways to remedy water in the crawl space? - ✔️✔️Install a new gutter
that slopes down and away from the house (following the grade) OR a sump pump
Crawlspaces: If you smell a gas leak what should you do? - ✔️✔️Don't go in or get out!
What safety equipment (or PPE) should you wear when in crawlspaces? - ✔️✔️Bump
cap, coveralls, safety glasses, RESPIRATOR, and knee pads
Are there ventilation standards in crawl spaces for sub termites? - ✔️✔️No!
Are there ventilation standards in crawl spaces for wood-destroying beetles and fungi? -
✔️✔️Yes!
All ventilation materials (ex: vents, vapor barriers, etc must meet the standard of the
__________________________ code - ✔️✔️International Building Code
How thick should your vapor barrier be? - ✔️✔️4-6mm
If less than 90% of the soil in the crawl is covered with a Class 1 vapor barrier
(4 or 6 ml poly).... - ✔️✔️divide the sq. ft. of soil in the crawl by 150...and that equals
the square footage of ventilation that is required to meet the Building Code.
If 90% or > of the soil of the crawl space is covered with a Class 1 vapor barrier
(4 or 6 ml poly)... - ✔️✔️divide the sq. ft. of soil in the crawl by 1,500...and that equals
the square footage of ventilation that is required to meet the Building Code.
,What are the minimum treatment standards for the prevention or control
of powder post beetles? - ✔️✔️If the PPB infestation is in the crawl space, at least 70%
of the soil of the crawl space must be covered with a vapor barrier and the under-floor
space must meet the ventilation standards of the International Residential Building
Code of 1 & 2 Family Homes.
The application of a pesticide registered by EPA and the Georgia Department of
Agriculture, in strict accordance with the product's registered directions for use.
What are the minimum standards for the prevention or control of wood
decay fungi? - ✔️✔️When wood decay fungi are present in the crawl space, at least
70% of the soil of the crawl space must be covered with a vapor barrier and the under-
floor space must meet the ventilation standards of the International Residential Building
Code of 1 & 2 Family Homes.
If the wood decay fungus in the crawl space is water-conducting rot (Poria incrassata),
the additonal treatment measures must be met: - ✔️✔️1. Cut the visible rhizomorphs
and scrape visible fungal growth from the
foundation walls.
2. Removal of all wooden contacts between buildings and inside crawl space
soil, other than those wooden supports which have been treated with
preservatives to a minimum preservative retention designed for ground
contact.
T/F: Is inadequate ventilation a conducive condition on the Georgia WDI form? -
✔️✔️Yes! (True)
Question #1 - How many standard vents (8" x 16") would be needed to meet the
International Residential Building Code for a residential crawl space structure that is 65'
long by 30' wide without a vapor barrier?
2
10
15
20 - ✔️✔️1. 65*30 = 1950 (square footage of crawl space)
2. 1950/150 (since the crawlspace has less than 70% vapor barrier) = 13
3. 13 * 144 (square inches in a foot) = 1,872
4. 1,872/128 (size of the 8X16 vent) = 14.625
5. Since you can't have .625 of a vent you round up to 15
Question #2 - If that structure in Question #1 had 15 standard vents with a vent within 3'
of each corner of the structure, no vapor barrier and the wood was treated with a
product that is labeled for control of Powder Post Beetles, would that meet the treatment
standard in the Rules of the Structural Pest Control Commission for control of Powder
Post Beetles?
YES
, NO - ✔️✔️Why NO? Well...remember that in order for it meet the treatment standard
for Powder Post Beetles in the Rules of the Structural Pest Control Commission, at least
70% of the soil in the crawl space would need to be covered by a Class 1 vapor barrier
(4 mm), ventilation would have to meet the requirements of the International Residential
Building Code and the wood of the crawl would have to be treated with a product that is
labeled for the control of Powder Post Beetles. It met the standard for the International
Residential Building Code, the wood of the crawl was treated with a product that was
labeled for control of PPBs, but the crawl space had no vapor barrier. If a vapor barrier
covered at least 70% of the soil of the crawl, then it would have met the standards.
How many standard vents would be needed to meet the International Residential
Building Code for a 1,500 square foot residential crawl space structure that has a 4 mm
vapor barrier that overlaps by 6" and is taped, provides 100% coverage of the soil of the
crawl space, and extends up the exterior foundation walls by at least 6" and is taped
and secured to the exterior foundation walls and has mechanical exhaust ventilation
that meets the International Residential Building Code?
0
2
4
24 - ✔️✔️0!
Question #9 - Which of the following are the 3 conditions which are conducive to wood
destroying organism infestation and must be reported on an Official Georgia Wood
Infestation Inspection Report when you find it on a home that you are inspecting for the
sale of the property?
1. Wood within 6" of the soil
2. Wood touching the soil
3. Cellulose debris in the crawl space
4. Inadequate ventilation - ✔️✔️Wood touching the soil, cellulose debris in the crawl
space, and inadequate ventilation
*Wood within 6" of the soil that is not treated for ground contact must either be removed,
properly insulated or Waived using the Official Waiver form for the prevention or the
control of subterranean termites, but untreated wood must be touching soil to be
considered a condition which is conducive to wood destroying organism infestation on
an Official Georgia Wood Infestation Inspection Report.
When do Lyctid (true powerpost beetles) usually emerge? - ✔️✔️December to early
spring
When do Anobiid beetles usually emerge? - ✔️✔️April to June
Old House Borer - ✔️✔️June to August
Exit size holes and shapes of beetles (LABO) - ✔️✔️Lyctid: Round shape 1/32-1/16
If a home has an infestation of wood boring beetles on the outside of the home what are
the requirements to treat the crawlspace? - ✔️✔️You do not need to treat the
crawlspace or apply vapor barrier. Wood on the outside should be treated with a
pesticide for wood boring beetles per the label.
If conducive conditions are discovered within _________ days of treatment and a WDI
report to remedy pests or fungi in a crawl space the PMP must return and remedy the
issues free of charge to the customer. - ✔️✔️90 days
Why is excess moisture in crawl spaces such a big deal to our customers? -
✔️✔️Facilitates an environment for pests that can cause structural and health concerns
in addition to being nuisances.
T/F: Do customers breath the air from the crawlspace? - ✔️✔️True!
What are some ways to remedy water in the crawl space? - ✔️✔️Install a new gutter
that slopes down and away from the house (following the grade) OR a sump pump
Crawlspaces: If you smell a gas leak what should you do? - ✔️✔️Don't go in or get out!
What safety equipment (or PPE) should you wear when in crawlspaces? - ✔️✔️Bump
cap, coveralls, safety glasses, RESPIRATOR, and knee pads
Are there ventilation standards in crawl spaces for sub termites? - ✔️✔️No!
Are there ventilation standards in crawl spaces for wood-destroying beetles and fungi? -
✔️✔️Yes!
All ventilation materials (ex: vents, vapor barriers, etc must meet the standard of the
__________________________ code - ✔️✔️International Building Code
How thick should your vapor barrier be? - ✔️✔️4-6mm
If less than 90% of the soil in the crawl is covered with a Class 1 vapor barrier
(4 or 6 ml poly).... - ✔️✔️divide the sq. ft. of soil in the crawl by 150...and that equals
the square footage of ventilation that is required to meet the Building Code.
If 90% or > of the soil of the crawl space is covered with a Class 1 vapor barrier
(4 or 6 ml poly)... - ✔️✔️divide the sq. ft. of soil in the crawl by 1,500...and that equals
the square footage of ventilation that is required to meet the Building Code.
,What are the minimum treatment standards for the prevention or control
of powder post beetles? - ✔️✔️If the PPB infestation is in the crawl space, at least 70%
of the soil of the crawl space must be covered with a vapor barrier and the under-floor
space must meet the ventilation standards of the International Residential Building
Code of 1 & 2 Family Homes.
The application of a pesticide registered by EPA and the Georgia Department of
Agriculture, in strict accordance with the product's registered directions for use.
What are the minimum standards for the prevention or control of wood
decay fungi? - ✔️✔️When wood decay fungi are present in the crawl space, at least
70% of the soil of the crawl space must be covered with a vapor barrier and the under-
floor space must meet the ventilation standards of the International Residential Building
Code of 1 & 2 Family Homes.
If the wood decay fungus in the crawl space is water-conducting rot (Poria incrassata),
the additonal treatment measures must be met: - ✔️✔️1. Cut the visible rhizomorphs
and scrape visible fungal growth from the
foundation walls.
2. Removal of all wooden contacts between buildings and inside crawl space
soil, other than those wooden supports which have been treated with
preservatives to a minimum preservative retention designed for ground
contact.
T/F: Is inadequate ventilation a conducive condition on the Georgia WDI form? -
✔️✔️Yes! (True)
Question #1 - How many standard vents (8" x 16") would be needed to meet the
International Residential Building Code for a residential crawl space structure that is 65'
long by 30' wide without a vapor barrier?
2
10
15
20 - ✔️✔️1. 65*30 = 1950 (square footage of crawl space)
2. 1950/150 (since the crawlspace has less than 70% vapor barrier) = 13
3. 13 * 144 (square inches in a foot) = 1,872
4. 1,872/128 (size of the 8X16 vent) = 14.625
5. Since you can't have .625 of a vent you round up to 15
Question #2 - If that structure in Question #1 had 15 standard vents with a vent within 3'
of each corner of the structure, no vapor barrier and the wood was treated with a
product that is labeled for control of Powder Post Beetles, would that meet the treatment
standard in the Rules of the Structural Pest Control Commission for control of Powder
Post Beetles?
YES
, NO - ✔️✔️Why NO? Well...remember that in order for it meet the treatment standard
for Powder Post Beetles in the Rules of the Structural Pest Control Commission, at least
70% of the soil in the crawl space would need to be covered by a Class 1 vapor barrier
(4 mm), ventilation would have to meet the requirements of the International Residential
Building Code and the wood of the crawl would have to be treated with a product that is
labeled for the control of Powder Post Beetles. It met the standard for the International
Residential Building Code, the wood of the crawl was treated with a product that was
labeled for control of PPBs, but the crawl space had no vapor barrier. If a vapor barrier
covered at least 70% of the soil of the crawl, then it would have met the standards.
How many standard vents would be needed to meet the International Residential
Building Code for a 1,500 square foot residential crawl space structure that has a 4 mm
vapor barrier that overlaps by 6" and is taped, provides 100% coverage of the soil of the
crawl space, and extends up the exterior foundation walls by at least 6" and is taped
and secured to the exterior foundation walls and has mechanical exhaust ventilation
that meets the International Residential Building Code?
0
2
4
24 - ✔️✔️0!
Question #9 - Which of the following are the 3 conditions which are conducive to wood
destroying organism infestation and must be reported on an Official Georgia Wood
Infestation Inspection Report when you find it on a home that you are inspecting for the
sale of the property?
1. Wood within 6" of the soil
2. Wood touching the soil
3. Cellulose debris in the crawl space
4. Inadequate ventilation - ✔️✔️Wood touching the soil, cellulose debris in the crawl
space, and inadequate ventilation
*Wood within 6" of the soil that is not treated for ground contact must either be removed,
properly insulated or Waived using the Official Waiver form for the prevention or the
control of subterranean termites, but untreated wood must be touching soil to be
considered a condition which is conducive to wood destroying organism infestation on
an Official Georgia Wood Infestation Inspection Report.
When do Lyctid (true powerpost beetles) usually emerge? - ✔️✔️December to early
spring
When do Anobiid beetles usually emerge? - ✔️✔️April to June
Old House Borer - ✔️✔️June to August
Exit size holes and shapes of beetles (LABO) - ✔️✔️Lyctid: Round shape 1/32-1/16
