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CSTT practice questions - frequently asked questions

Plain answers about how CSTT 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 CSTT exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The CSTT exam spans 4 domains: ASTM C617/C617M - Standard Practice for Capping Cylindrical Concrete Specimens; ASTM C1231/C1231M - Standard Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders; ASTM C39/C39M - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens; ASTM C78/C78M - Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading). Every practice question on this site is tagged to one of these domains.

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