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CDT practice questions - frequently asked questions

Plain answers about how CDT Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real CDT exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The CDT exam spans 8 domains: Fundamentals (13% of the exam); Project Conception and Delivery (11% of the exam); Design Process (12% of the exam); Construction Documents (22% of the exam); Procurement (10% of the exam); Preconstruction (9% of the exam); Construction (15% of the exam); Life Cycle Activities (8% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Construction Documents 22%; Construction 15%; Fundamentals 13%; Design Process 12%; Project Conception and Delivery 11%; Procurement 10%; Preconstruction 9%; Life Cycle Activities 8%.

The CDT exam has 120 questions and is completed in 2 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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