37 free practice questions for this exam, each with the reason for the answer and where to look it up.
10 questions, graded as you go, with the reason for every answer. No sign-up.
| Exam | Concrete field testing technician Grade I |
|---|---|
| Who runs it | ACI |
| Where | United States |
Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.
Which ASTM specification covers ready-mixed concrete as delivered to the job?
A. ASTM C94
ASTM C94 is the ready-mixed concrete specification covering ordering, batching, mixing and delivery. C150 covers portland cement, C33 aggregates and C31 making and curing test cylinders.
Reference: ASTM C94, ready-mixed concrete
A 0.25 cu ft measure weighs 8.0 lb empty and 44.5 lb when filled with fresh concrete and struck off. What is the unit weight of the concrete?
Answer in lb/cu ft.
146 lb/cu ft
Net weight = 44.5 - 8.0 = 36.5 lb. Unit weight = 36.5 / 0.25 = 146.0 lb/cu ft.
Reference: ASTM C138, density (unit weight)
What are the dimensions of a standard slump cone?
B. 4 in. top, 8 in. base, 12 in. high
The mold is a cone frustum 4 in. across the top, 8 in. across the base and 12 in. high. A 6 in. by 12 in. shape is the standard strength cylinder, not the slump cone.
Reference: ASTM C143, apparatus
Tell us where and when you are taking it, and what you want more of. It decides what we write next.
National Home Inspector Examination · Home inspector state exam · Residential building inspector (B1) · Residential combination inspector · Permit technician · Certified pool operator (CPO)