Free CGC Practice Questions

Question 1

A contractor's monthly WIP schedule shows earned revenue to date of $3,240,000 and billings to date of $3,410,000. The cost-to-cost percentage complete has already been verified. How should the $170,000 difference be reported?

Accepted Answer

As an overbilling and contract liability

Answer

As an underbilling and current contract asset

Answer

As gross profit earned but not yet billed to the owner

Answer

As accounts receivable due immediately from the owner

Question 2

Concrete for a structural slab has f'c = 4,000 psi. The testing report states that the arithmetic average of three consecutive strength tests is 4,080 psi and the lowest individual strength test is 3,620 psi. Under common ACI 318 acceptance criteria, which conclusion is supported?

Accepted Answer

The results satisfy both stated strength criteria.

Answer

The results fail because the lowest test is below 4,000 psi.

Answer

The results fail because no individual test may be below 3,900 psi.

Answer

The slab must be demolished before any further evaluation.

Question 3

During an occupied renovation, the architect issues a properly authorized Construction Change Directive requiring an additional temporary dust-control enclosure. The parties have not yet agreed on price or time, and the contract uses an AIA A201-style change mechanism. How should the contractor respond?

Accepted Answer

Proceed, track the cost and time, and use the contract adjustment process.

Answer

Treat the directive as an ASI with no price or time effect.

Answer

Suspend the affected work until a bilateral change order is signed.

Answer

Respond with an RFI and disregard the directive until clarified.

Question 4

A competent person inspects a 4 ft 6 in-deep trench and finds no indication of a potential cave-in. Employees enter from one end, and the nearest ladder is 38 ft laterally from the work area. What correction is required before work continues?

Accepted Answer

Add or relocate safe egress so lateral travel is no more than 25 ft.

Answer

Install a trench shield because every excavation 4 ft or deeper requires protection.

Answer

Have each employee wear a personal fall-arrest system in the trench.

Answer

Obtain a professional engineer's protective-system design for the excavation.

Question 5

A pay application shows $620,000 of completed work, $80,000 of eligible stored materials, 10% retainage on both, and $525,000 in previous payments. What current payment is due?

Accepted Answer

$105,000

Answer

$70,000

Answer

$175,000

Answer

$113,000

Question 6

On a Florida private project, a material supplier contracted directly with the general contractor and has no direct contract with the owner. The supplier first furnished materials 32 days ago, and the owner has not made final disbursement. Which action best preserves the supplier's standard construction-lien rights at this stage?

Accepted Answer

Serve a Notice to Owner now, before the 45-day period expires.

Answer

Wait until final furnishing, then serve the Notice to Owner within 90 days.

Answer

Serve a contractor's final payment affidavit at least 5 days before any lien action.

Answer

Rely on the recorded Notice of Commencement instead of giving separate notice.

Question 7

A Phase I environmental site assessment for a proposed warehouse identifies a former dry-cleaning operation as a recognized environmental condition. The owner now needs to determine whether soil or groundwater contamination is present. What investigation is appropriate next?

Accepted Answer

Perform a targeted Phase II assessment with sampling and testing.

Answer

Update the boundary and topographic survey.

Answer

Repeat the Phase I assessment with another consultant.

Answer

Begin mass excavation and classify the soil by visual observation.

Question 8

A newly designed parking facility contains 430 spaces. Under the 2010 ADA Standards, what is the minimum accessible-space count, including the minimum van-accessible portion?

Accepted Answer

9 accessible spaces, including 2 van spaces

Answer

8 accessible spaces, including 2 van spaces

Answer

9 accessible spaces, including 1 van space

Answer

10 accessible spaces, including 2 van spaces

Question 9

A contractor's estimated project cost is $800,000. An estimator multiplies the cost by 1.20 and reports that the resulting $960,000 price provides a 20% gross margin. Which statement correctly evaluates the estimate?

Accepted Answer

$1,000,000 is required; a $960,000 price produces a 16.67% margin.

Answer

$960,000 is correct because markup and margin use the same denominator.

Answer

$960,000 is correct because profit divided by cost is the margin.

Answer

$1,000,000 is required; a $960,000 price produces a 25% margin.

Question 10

A project network uses finish-to-start logic: A takes 3 days; B and C follow A and take 5 and 4 days; D follows both B and C and takes 2 days. The contractor must shorten project completion by one day. B can be shortened one day for $2,000, C one day for $1,000, and D one day for $4,000. Which change is the least-cost option that actually shortens completion?

Accepted Answer

Shorten B by one day for $2,000.

Answer

Shorten C by one day for $1,000.

Answer

Shorten D by one day for $4,000.

Answer

Shorten both B and C by one day for $3,000.

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