In Hawaii's tropical climate, what is the most effective method for preventing subterranean termite infestation in new construction?
Correct Answer
C) Physical termite barriers at foundation level
Physical barriers such as termite shields or mesh systems provide the most reliable long-term protection against Hawaii's aggressive termite species.
Why This Is the Correct Answer
Physical termite barriers (such as stainless steel mesh — e.g., Termi-Mesh — or metal termite shields) installed at foundation level provide a durable, long-term mechanical obstruction that termites cannot penetrate or bypass. Unlike chemical treatments that degrade over time or inspections that are reactive, physical barriers work passively for the life of the structure. Hawaii's building code reflects this by emphasizing physical barriers for new construction.
Why the Other Options Are Wrong
Option A: Regular pest control inspections
Regular inspections are a monitoring and detection strategy, not prevention. By the time an infestation is discovered during inspection, structural damage may already have occurred. Inspections complement prevention but cannot replace it.
Option B: Pressure-treated lumber only
Pressure-treated lumber resists wood-decay fungi and some pests, but it does not provide complete protection against subterranean termites that can travel through soil to reach untreated portions of a structure. It is one layer of defense, not the primary preventive method.
Option D: Chemical soil treatment around the perimeter
Chemical soil treatments (termiticides) are effective but have a limited service life (typically 5–10 years), can leach into Hawaii's sensitive groundwater, and require re-application. They are less preferred as the sole primary method compared to permanent physical barriers under current Hawaii guidelines.
Memory Technique
Hawaii = Physical. Think of a physical wall (barrier) protecting the foundation — it's the first line of defense built into the structure. No chemicals needed for it to work 30 years from now.
More Hawaii Questions
A concrete mix design for coastal construction specifies a water-cement ratio of 0.40. If 650 lbs of cement is used per cubic yard, how many gallons of water should be added?
A contractor is installing hurricane straps rated at 1,500 pounds each. If the calculated uplift force on a rafter is 3,200 pounds, how many straps are required with a 2.0 safety factor?
Hawaii Building Code requires special inspection for concrete placement in seismic design categories. What is the minimum frequency for concrete strength testing?
What is the maximum allowable deflection for roof rafters under design wind loads in Hawaii's hurricane zones?
Which roofing attachment method is specifically required in Hawaii's hurricane zones for asphalt shingles on residential construction?
A building in Maui requires hurricane straps rated for 175 mph winds. If each strap must resist 1,200 lbs of uplift force and you have 48 roof-to-wall connections, what is the total uplift resistance provided?
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According to Hawaii building requirements, hurricane straps connecting roof trusses to wall plates must be rated for what minimum uplift force in high wind zones?
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In tropical construction, what is the recommended minimum clearance between wood framing and grade to prevent moisture-related deterioration?
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A building project in Honolulu requires a concrete slab exposed to severe saltwater conditions. The structural engineer specifies a water-cement ratio not to exceed 0.40. If 600 pounds of cement are used, what is the maximum water content allowed?