Free GACP Practice Questions

Question 1

During a water test before cladding installation, water appears on the sheathing immediately below a newly installed window. The frame's drainage openings are clear. Inspection shows that the sill-pan flashing discharges behind, rather than over, the wall's water-resistive barrier. Which repair addresses the cause of the leak?

Accepted Answer

Reintegrate the sill pan with the drainage plane so water exits outward.

Answer

Run a continuous exterior sealant bead across the sill drainage openings.

Answer

Replace the window with a unit that has a lower air-leakage rating.

Answer

Apply an interior vapor-retarder coating to the sheathing below the window.

Question 2

A house's final blower-door test records 900 CFM50. Its tested air-barrier enclosure contains 18,000 cubic feet; an attached 6,000-cubic-foot garage is outside that enclosure. The project's maximum permitted leakage is 2.5 ACH50. How should the supervisor assess the enclosure result?

Accepted Answer

3.00 ACH50; require leakage repairs and another enclosure test.

Answer

2.25 ACH50; accept after including the garage volume.

Answer

0.05 ACH50; accept the enclosure because leakage is below the project limit.

Answer

2.50 ACH50; accept the enclosure as exactly meeting the permitted limit.

Question 3

The conventional ventilation package for an office costs $44,000 installed. An equally suitable high-efficiency package costs $62,000. The efficient package reduces annual utility costs by $4,500 but increases annual maintenance costs by $1,500. The owner approves upgrades with a simple payback of no more than seven years. There are no incentives or other cost differences. The financial recommendation is:

Accepted Answer

Approve: the upgrade pays back in six years.

Answer

Approve: the upgrade pays back in four years.

Answer

Approve: the upgrade pays back in three years.

Answer

Decline: the upgrade pays back in about 21 years.

Question 4

A hospital is renovating space across a corridor from occupied protective-environment rooms for highly immunocompromised patients. Infection prevention has approved continued occupancy with sealed construction containment and appropriate exhaust. The patients do not require airborne-infection isolation. Relative to the corridor, how should the construction zone and patient rooms be pressurized?

Accepted Answer

Negative construction zone; positive patient rooms.

Answer

Positive construction zone; negative patient rooms.

Answer

Negative construction zone; negative patient rooms.

Answer

Positive construction zone; positive patient rooms.

Question 5

A buyer is comparing two insulation Environmental Product Declarations (EPDs). One reports cradle-to-gate global warming potential per kilogram; the other reports cradle-to-grave global warming potential per square meter at a specified thermal resistance. The products need different thicknesses to provide the wall's required insulation. Before ranking their climate impacts for this wall, the buyer should:

Accepted Answer

Compare equivalent thermal performance and service life within matching life-cycle boundaries.

Answer

Convert both results to emissions per kilogram of insulation before comparing.

Answer

Apply identical transport distances from each manufacturing plant to the jobsite.

Answer

Adjust the results according to each product's percentage of recycled content.

Question 6

The approved remediation plan for a former industrial site prohibits infiltration through its protective cap. The redevelopment must still filter parking-lot runoff through planted media before discharge to an authorized outlet. Which concept should the team take forward for design approval?

Accepted Answer

A lined bioretention planter with an underdrain above the cap.

Answer

A deeper unlined rain garden excavated below the protective cap.

Answer

A sealed detention vault discharging through a flow-control orifice.

Answer

Elimination of landscape treatment to avoid disturbing the contaminated soil.

Question 7

After extensive air sealing and insulation, an office retains its original single-stage air conditioner. The unit reaches the cooling setpoint quickly, cycles off frequently, and leaves indoor relative humidity at 67%. Refrigerant charge, supply airflow, and thermostat operation check out; outdoor-air delivery also matches the design. What most plausibly explains the new comfort problem?

Accepted Answer

Reduced cooling loads have left the unit oversized, shortening moisture-removal cycles.

Answer

Low refrigerant charge is impairing evaporator performance.

Answer

Insufficient compressor capacity is leaving the thermostat's cooling demand unmet for long periods.

Answer

Excess outdoor air is overwhelming the system's dehumidification capacity.

Question 8

A permitted rainwater system supplies toilet flushing and receives potable makeup water through an approved air gap into its storage tank. To simplify the pipework, an installer proposes a direct connection between the pressurized potable and nonpotable lines, controlled by a solenoid and a single check valve. The plumbing authority has approved no alternative backflow arrangement. What is the appropriate response to the proposal?

Accepted Answer

Keep the air-gapped makeup connection rather than install the proposed cross-connection.

Answer

Replace the rainwater supply with a potable-only toilet system.

Answer

Accept the connection provided the solenoid opens only when the rainwater tank is empty.

Answer

Accept the connection if potable-line pressure stays above the rainwater distribution pressure.

Question 9

An approved concrete mix uses slag cement to reduce Portland-cement content. The engineer's form-removal plan permits removal of wall forms once representative field-cured tests verify at least 2,000 psi, with continued curing afterward. The current result is 2,400 psi, and the remaining release conditions are documented as satisfied. A foreman insists that any mix containing slag must remain in forms for 28 days. The superintendent should:

Accepted Answer

Release the forms under the approved plan and continue the specified curing.

Answer

Keep the forms until day 28 because supplementary cementitious materials require a fixed cure period.

Answer

Reject field-cured results and require standard laboratory curing instead.

Answer

Release the forms and end curing because the specified removal strength has been reached.

Question 10

Replacing hard finishes with acoustic ceiling tiles and carpet has reduced echo inside two adjacent interview rooms, but normal speech is still intelligible between them. The separating wall stops at the suspended ceiling, and a field investigation identifies the shared plenum as the transmission path. Which change targets the remaining defect?

Accepted Answer

Extend and seal the separating partition to the structural deck.

Answer

Specify ceiling tiles with a higher noise reduction coefficient (NRC).

Answer

Add thicker sound-absorbing wall panels to both rooms.

Answer

Add a second gypsum-board layer to each side of the wall below the ceiling.

Free GACP Practice Questions

Domain 1: GREEN BUILDING CONTEXT 5% of exam

Question 1

Domain 2: SITES 8% of exam

Question 2

Domain 3: WATER 5% of exam

Question 3

Domain 4: ENERGY 25% of exam

Question 4

Question 5

Domain 5: MATERIALS 30% of exam

Question 6

Question 7

Question 8

Domain 6: INDOOR ENVIRONMENTAL QUALITY (IEQ) 6% of exam

Question 9

Domain 7: GREEN BUILDING PROCESS 19% of exam

Question 10

That's 10 of 1,030