Free ACI certification examination for Tilt-Up Supervisor and Tilt-Up Technician Practice Questions

Sample Practice Questions

Try these 10 sample questions from the ACI certification examination for Tilt-Up Supervisor and Tilt-Up Technician practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1During a tilt-up panel lift, the crane operator and signal person face in different directions. Under OSHA's construction crane signaling rule, whose perspective must the signal person use when giving directional instructions to the operator?

   1. A.The signal person's perspective
   2. B.The crane operator's perspectiveCorrect answer: B
   3. C.The lift director's perspective
   4. D.The rigger's perspective

   Explanation: OSHA states: "All directions given to the operator by the signal person must be given from the operator's direction perspective." The signal person therefore uses the operator's perspective when giving directional instructions.

   Reference: OSHA 29 CFR 1926.1419 — Signals—general requirements — 29 CFR 1926.1419(k)

2. 2For an early tilt-up erection plan, the heaviest panel weighs 40 tons. Using the ACI/TCA preliminary rule of thumb for crane selection, what nominal crane capacity should the team consider?

   1. A.About 13.3 tons
   2. B.About 80 tons
   3. C.About 120 tonsCorrect answer: C
   4. D.About 160 tons

   Explanation: TCA states that "three times the weight of the heaviest panel should be considered the crane capacity required." Multiplying 40 tons by three gives 120 tons as a preliminary rule-of-thumb estimate; the actual lift still requires a capacity assessment for its configuration.

   Reference: TCA Collective Position on Recognizing and Controlling Ground Bearing Pressures for Erecting Tilt-Up Panels — The Current Industry

3. 3A roof diaphragm transfers a total earthquake force of 40 kips to two vertical resisting walls. In a simplified load-path check, the first wall is assigned 25 kips. If the two walls carry the entire 40-kip force in the same direction, what force is assigned to the second wall?

   1. A.15 kipsCorrect answer: A
   2. B.25 kips
   3. C.40 kips
   4. D.65 kips

   Explanation: FEMA states that "The floor and roof systems that distribute an earthquake’s lateral forces are referred to as diaphragms." Under the stated simplified load balance, the second wall receives 40 − 25 = 15 kips. Copying the first wall gives 25, assigning the whole load to the second gives 40, and adding 40 and 25 gives 65 kips.

   Reference: FEMA IS-8.A Building for the Earthquakes of Tomorrow — Unit 4 — Unit 4, Diaphragms

4. 4A supervisor estimates soil bearing pressure for a concentrically loaded panel footing. The vertical load is 40,000 lb, and the effective bearing area is 4 ft by 5 ft. Assuming uniform pressure and ignoring footing self-weight, what is the average bearing pressure?

   1. A.1,000 lb/ft²
   2. B.2,000 lb/ft²Correct answer: B
   3. C.8,000 lb/ft²
   4. D.10,000 lb/ft²

   Explanation: FHWA illustrates bearing stress as "q applied = P ÷ A ′". Here the area is 4 × 5 = 20 ft², and 40,000 ÷ 20 = 2,000 lb/ft². The estimate alone does not establish whether the footing meets its design requirements.

   Reference: FHWA Geotechnical Engineering Circular No. 6 — Shallow Foundations — Appendix B, Example 1, Step 10, p. B-14

5. 5The crew saws a weakened plane into a slab-on-grade to guide where cracking from dimensional change occurs. Which type of joint has this purpose?

   1. A.Construction joint
   2. B.Contraction jointCorrect answer: B
   3. C.Isolation joint
   4. D.Expansion joint

   Explanation: ACI describes a contraction joint as a groove made "to create a weakened plane to regulate the location of cracking" from dimensional change. The other choices are different joint types with different primary purposes.

   Reference: ACI Technical Questions — Difference between concrete joint types — Answer, contraction joint

6. 6A forming crew needs to produce a beveled edge on a tilt-up panel by placing an insert in an inside form corner. Which item is intended for this purpose?

   1. A.Bolster strip
   2. B.Chamfer stripCorrect answer: B
   3. C.Reveal strip
   4. D.Closure strip

   Explanation: ACI defines a chamfer strip as an insert "placed in an inside form corner" to produce "either a rounded or flat chamfer" or a rustication. Here it creates the specified beveled edge.

   Reference: ACI Concrete Terminology — Chamfer strip

7. 7A panel mixture must maintain its specified slump with less mixing water, apart from any effect of entrained air. Which ACI admixture classification is defined by that water-reduction effect?

   1. A.Retarding admixture
   2. B.Air-entraining admixture
   3. C.Water-reducing admixtureCorrect answer: C
   4. D.Accelerating admixture

   Explanation: ACI defines a water-reducing admixture as one that "maintains slump with a reduced amount of water" through factors other than air entrainment. That is the effect specified for this mixture.

   Reference: ACI Concrete Terminology — Water-reducing admixture

8. 8A tilt-up supervisor checks embedded lifting inserts for a panel under OSHA's precast concrete construction rule. What is the minimum required insert capacity as a multiple of the maximum intended load transmitted to the inserts?

   1. A.2 timesCorrect answer: A
   2. B.4 times
   3. C.5 times
   4. D.10 times

   Explanation: OSHA requires tilt-up lifting inserts to support "at least two times the maximum intended load applied or transmitted to them." Two is the minimum multiplier; greater capacities can satisfy the minimum but are not the minimum itself.

   Reference: OSHA 29 CFR 1926.704 — Requirements for precast concrete — 29 CFR 1926.704(b)

9. 9A panel finish specification calls for an elastic polymer paint that behaves like a rubber-like membrane to span cracks and reduce permeability. What type of paint does ACI's tilt-up guide describe this way?

   1. A.Cement paint
   2. B.Epoxy paint
   3. C.Silicate paint
   4. D.Elastomeric paintCorrect answer: D

   Explanation: ACI defines "elastomeric paint" as an elastic polymer paint that behaves as "a rubber-like membrane on the concrete surface to span cracks and decrease permeability." That description matches the specified finish.

   Reference: ACI 551.1R-14 Guide to Tilt-Up Concrete Construction — Chapter 2, Definitions, elastomeric paint

10. 10A tilt-up lift is planned near an energized overhead line confirmed to be 200 kV nominal alternating current. The employer uses the Table A clearance option under OSHA's construction crane rule. What is the minimum clearance from the line for the equipment, load line and load?

    1. A.10 feet
    2. B.15 feetCorrect answer: B
    3. C.20 feet
    4. D.25 feet

    Explanation: Table A lists "over 50 to 200" kV with a clearance of "15" feet. The table note says the upper value "includes that value"; therefore 200 kV falls in the 15-foot row. The option's other required precautions also apply.

    Reference: OSHA 29 CFR 1926.1408 — Power line safety (up to 350 kV) — 29 CFR 1926.1408, Table A