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These 10 free CDT questions are organized by exam domain, so you can see how each part of the Certified Dental Technician blueprint is tested. Reveal the answer and explanation under each question.
At schematic design, an estimator must compare the costs of complete exterior-wall systems, including their structure, enclosure, and finishes. Individual materials and trade packages have not been selected. The organizing approach best suited to this comparison is to:
Correct answer: A - Group costs by UniFormat functional elements.
A product representative offers a verified Environmental Product Declaration for a wall panel and says, 'This proves our panel has a lower environmental impact than the competing panel.' No comparable life-cycle data for the competing product is provided. Which assessment of that claim is defensible?
Correct answer: A - The declaration reports impacts but does not, by itself, establish comparative environmental superiority.
A university wants to retain its own architect while obtaining a constructor's estimating and constructability advice during design. That same constructor will later hold the trade subcontracts and assume responsibility for construction under a guaranteed maximum price. Which delivery arrangement fits these contractual relationships?
Correct answer: D - Construction manager at risk
Two mechanical systems meet the same performance requirements and fit the owner's initial budget. The owner will select the lower life-cycle cost over a common study period. All future costs and residual values below are already expressed in present-value dollars. System A: installed cost $120,000; operating and maintenance costs $65,000; replacement costs $20,000; residual value $5,000. System B: installed cost $150,000; operating and maintenance costs $35,000; replacement costs $10,000; residual value $10,000. Which selection follows the owner's criterion?
Correct answer: D - System B, with a $15,000 life-cycle cost advantage.
Under an unmodified AIA A201-2017 contract, the flooring specification requires an underlayment throughout the tile area. The finish plan identifies the tile but does not mention the underlayment, and no drawing detail conflicts with installing it. The contractor omitted the underlayment from its estimate. How should this requirement be treated?
Correct answer: B - Include the underlayment in the work at the existing contract sum.
A metal-panel specification must address three separate requirements: installer qualifications, factory testing of fabricated panels, and field testing of installed panels. Under SectionFormat, where do these requirements belong, in that order?
Correct answer: B - Part 1, Part 2, Part 3
Eight days before sealed bids are due, a bidder's question reveals that a flashing detail must be revised. The revision adds material and labor to the work. The architect has completed the corrected detail. What is the proper way to make it part of the procurement requirements?
Correct answer: A - Issue an addendum identifying the revision and distribute it to all registered plan holders.
Before roofing materials are ordered, the contractor submits product data showing a 45-mil membrane where the specification requires 60 mils. The contractor does not identify the deviation. The architect returns the submittal marked 'Reviewed' without commenting on thickness. No contract modification has been issued. On this project, unmodified AIA A201-2017 governs. Which conclusion follows?
Correct answer: C - The specified thickness remains required; review did not authorize the undisclosed deviation.
The owner and architect sign a construction change directive relocating a non-load-bearing partition on a project governed by unmodified AIA A201-2017. The relocation is within the general scope of the contract and presents no unresolved safety or design issue. The contractor disputes the proposed price adjustment. What must the contractor do while that adjustment is being resolved?
Correct answer: C - Proceed with the relocation, documenting costs and schedule effects for the unresolved adjustment.
A progress-payment review establishes the following amounts: Work completed to date: $480,000, including $40,000 of materials billed as stored last month and now installed. Materials currently stored on site and eligible for payment: $60,000. Additional materials stored off site: $30,000; the required insurance evidence for payment has not been provided. The contract requires 10% retainage on completed work and eligible stored materials. Previous certificates for payment total $360,000, and no other adjustments apply. What current payment should be certified?
Correct answer: B - $126,000
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