10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The GARBC exam has 80 questions and runs 200 minutes.
These 10 free GARBC questions are organized by exam domain, so you can see how each part of the Georgia Residential-Basic Contractor License Exam blueprint is tested. Reveal the answer and explanation under each question.
The pervious finish grade at a new house falls 4 inches over the first 10 feet away from the foundation. No approved drain or swale is provided. Under the 2018 IRC, which correction is appropriate before final acceptance?
Correct answer: C - Regrade for at least 6 inches of fall, or provide an approved drain or swale.
Excavation for a continuous footing exposes a pocket of dark organic soil and roots at the planned bearing elevation. The surrounding soil is firm, and the footing has not been poured. What is the best field response?
Correct answer: A - Remove the unsuitable material and restore bearing by an approved correction before concrete placement.
A concrete truck arrives with a 6.5-inch slump. The approved mixture design calls for a 6- to 8-inch slump produced with a high-range water reducer, the batch ticket shows the designed water quantity, and no water was added at the site. What should the superintendent do?
Correct answer: D - Verify the approved admixture and continue the specified acceptance testing.
During a footing pre-pour inspection, #4 reinforcing bars are lying 1.5 inches above the soil. The concrete will be cast directly against and permanently exposed to earth. What correction is required?
Correct answer: B - Support the bars on approved chairs so the concrete cover is at least 3 inches.
Water appears at the interior base of a brick-veneer wall only during wind-driven rain. Exterior mortar joints are sound, but mortar droppings bridge the 1-inch cavity and block the weeps immediately above the base flashing. Which failure mechanism best explains the leak?
Correct answer: B - Water is crossing the bridged cavity instead of draining through the flashing and weeps.
Which proposed alteration complies with the cutting limits for an actual 9.25-inch-deep solid-sawn floor joist?
Correct answer: D - A 3-inch-diameter hole centered vertically, more than 2 inches from both edges
A straight stair connects two finished floors 105 inches apart. Using the fewest risers that do not exceed 7.75 inches, which layout is correct?
Correct answer: A - 14 risers at 7.50 inches, with 13 treads
While routing a supply duct, the mechanical subcontractor proposes cutting one web of an installed metal-plate-connected roof truss. What direction should the contractor give?
Correct answer: C - Reroute the duct or obtain a written truss-design repair before altering the truss.
Plans show a deck ledger against a brick-veneer wall. The installer intends to anchor only into the veneer and seal the top edge with caulk. Which revision avoids relying on the veneer for structural support?
Correct answer: A - Use freestanding support or an engineered connection that bypasses the veneer.
An asphalt-shingle roof is designed at a 3:12 slope on a sound deck. Which underlayment approach matches the 2018 IRC?
Correct answer: C - A two-layer application that provides double underlayment coverage
The GARBC exam also covers these domains. Drill them in the full free practice test:
The full bank has 1,020 more GARBC questions with explanations.
Continue in the free practice test →
View plans