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ICC Reinforced Concrete Exam Questions 2024 | Actual Questions and
Answers Latest Updated 2024/2025 (Graded A+)
ACI 318 Answer✔✔Governs structural concrete design, construction, inspection and acceptance Load Path Answer✔✔A continuous system of structural elements that transfer an applied load to the supporting soil. Which of the following publications are most useful for a Special Inspector? Answer✔✔ACI 318 A_____ is a horizontal member that transfers loads laterally. Answer✔✔Beam Plain concrete refers to: Answer✔✔Concrete with less than minimum amount of reinforcement A beam is primarily subject to ____ whole a column is primarily subject to _______. Answer✔✔A. Shear, Flexure B. Compression, flexure C. Flexure, compression D. Compression, shear Answer C. Flexure, Compression A beam is primarily subject to compression while a column is primarily subject to shear. True or False Answer✔✔False. Beam is subject to Flexure, column is subject to compression. The best place to look up definitions in ACI 318-14 is: Answer✔✔Chapter 2 Foundations cast at the same elevation as the soil grade are known as: Answer✔✔Shallow
What causes concrete to set and become hardened? Answer✔✔Hydration Cement forming chemical bonds with water molecules, which sets things in motion to become an extremely hardened material. Answer✔✔Hydration Process In general, how long does it take for concrete to move from a plastic state to a hardened state, depending on weather and admixtures? Answer✔✔30 minutes to 5 hours Many project specifications consider concrete rejectable after it has bee what? Answer✔✔Batched for 90 minutes Hydration is "exothermic", meaning what? Answer✔✔It produces heat. What are pozzolans? Answer✔✔siliceous or siliceous/aluminous materials which have little to no cementitious value alone; react with lime and water to form a product similar to C-S-H. Aggregates not conforming to ASTM C33 or C330 must be what? Answer✔✔Shown by test or actual service to produce concrete of adequate strength and durability and approved by the building official. Aggregates make up what percent of concrete? Answer✔✔ 60 - 80% Pumice and tuff are considered what kind of aggregate? Answer✔✔Lightweight When pouring a structural concrete slab over a metal deck, what kind of concrete is necessary? Answer✔✔Lightweight ASTM C33 pertains to what? Answer✔✔A: Water B: Steel Fiber Reinforcement C: Calcium Chloride D: Normalweight Aggregate E: None of the Above Answer D: Normalweight Aggregate
What is the maximum compressive strength requirement of concrete? Answer✔✔No maximum, unless specified in special seismic cases Concrete is a mixture of: Answer✔✔Aggregate, Sand, Cement, and Water Portland cement must conform to _____ and normal-weight aggregate must conform to _____ in all concrete. Answer✔✔A: ASTM C150, ASTM C33 B: ASTM C1602, ASTM C33 C: ASTM C1602, ASTM C D: ASTM C33, ASTM C Answer: A ASTM C150, ASTM C Structural normal weight concrete MUST contain/produce Answer✔✔Potable or non-potable water, cementitious material and aggregate conforming to ASTM C Hydration Answer✔✔Is an exothermic (heat producing) chemical reaction that begins when water and cement are combined The maximum allowable nominal aggregate size for a 6-inch slab is: Answer✔✔2 inches: 1/3 the thickness of the slab What must air entrainment admixtures conform to? Answer✔✔A: ASTM C260 B: ASTM C1582 C: ASTM C94 D: ASTM C Answer: A: ASTM C Adding water to a concrete mix will: Answer✔✔Decrease the compressive strength Why is reinforcing steel (rebar) used in concrete? Answer✔✔To improve tensile and flexural strength
What is reinforced concrete? Answer✔✔Structural concrete that contains the minimum amount of reinforcing steel required by ACI 318, to give additional strength properties that it doesn't have on its own, which increases its structural capacity True or False: the minimum amount of reinforcement is determined by the special inspection agency. Answer✔✔False. Determine by the engineer based on ACI 318 Describe the difference between tensile, flexural, and shear forces Answer✔✔Tensile: being pulled apart Flexural: Flexing Shear: being bent Why is fiber used in concrete? Answer✔✔To help control cracks Why do many bridges or piers use epoxy-coated rebar? Answer✔✔They are in high corrosion areas Standard hook Answer✔✔a 90º or 180º bend made at the end of a reinforcing bar according to standards Stirrups Answer✔✔U, L, or rectangular shaped bars that are wrapped around longitudinal bars and used to resist shear forces in flexural members like beams. They usually terminate with 135 degree or 90 degree bend Ties Answer✔✔Refer to a loop of reinforcing bars that enclose longitudinal vertical bars, typically used to resist shear and lateral forces in compression members, terminating with a 135 degree or 90 degree bend Spiral Answer✔✔Continuously wrapped around longitudinal bars Deep Foundation Caisson Answer✔✔Round concrete columns extending deep into the ground
What type of reinforcement is only acceptable for structural use in spiral reinforcing? Answer✔✔Plain Reinforcement A grade 60 bar has a minimum what? Answer✔✔Minimum YIELD strength of 60,000 psi Which bar has the largest nominal diameter? Answer✔✔#9 bar Standard hooks for deformed bars in tension are either ______ or ______. Answer✔✔90 degrees or 180 degrees How many bars can be bundled together maximum? Answer✔✔ 4 True or False: #14 rebar is the largest diameter allowed in bundled bars in beams. Answer✔✔False: #11 Bar is largest allowed What type of rebar has the highest tensile strength? Answer✔✔Grade 80 Why is most rebar deformed? Answer✔✔Better adherence to concrete The minimum bend diameter of a number 9 standard hook in tension is: Answer✔✔9 inches What is the distance of concrete between the outermost layer of reinforcing steel and the closest outer surface of the concrete member? Answer✔✔Concrete Coverage (Cover) How should bundled bars be spliced? Answer✔✔Lap splicing individual bars within the bundle at staggered locations.
What is the minimum lap splice for lap splices within a column? Answer✔✔12 inches When welding a spliced connection, the contractor must achieve: Answer✔✔125% of the grade strength of the bar A mechanical splice must achieve? Answer✔✔125% of the grade strength of the bar True or False: Lap splices of #14 & #18 bars to #11 & smaller is permitted if the bars are in compression Answer✔✔True. Reference ACI 318, 25.5.5. Splicing of reinforcing steel must be: Answer✔✔As indicated in the contract documents or as authorized by the licensed design professional True or False: as a general rule, lap splices of bars larger than #11 are permitted. Answer✔✔False. Not permitted. Reference ACI 318, 25.5.1. What is concrete durability? Answer✔✔Ability to resist weathering action, chemical attack, abrasion, or any other process of deterioration that limits its service life.
