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Nome ~ ee Cou Rombion State University College of Engineering and Technology Clvil Engineering Department Reinforced Concrete Design Singly, Doubly Reinforced Beam and T-Beams on the onswer sheet Instruction: Shade the letter of the correct answer for multiple choice problem your final answer. poke (| pt) and solve the following problems, and show your solution (2 pts). Box sure fo be organize in your solution for easy checking. Shade E if fhe ques choices. Situation 1: A reinforced concrete beam has (es Width of 250 mm and an effective depth of 625 mm. it is reinforced for compression having a steel area of A's = 1250 mm? with a steel covering of 62.5 mm measured from the center of the steel reinforcement to the top most fibers of the beam. Use f'c = 20.68 MPa, fy =400 MPa, Es = 200,000 MPa. 1. Which of the following most nearly gives the depth of compression block for balanced condition {mm)? A. 318.75mm ec. 412.50 mm b. 375.00 mm d, 335.12 mm 2. Which of the following most nearly gives the area of steel at balance condition (mm)? a. 1264.0075 c. 47518672 b. 4931.7121 d. 5369.8438 3. Which of the following most nearly gives the maximum area of flexural steel in tension permitted in the given cross- section as required by the NSCP specifications? (mm?) §& 2625.00 c. 4930.00 b. 3875.00 d. 4750.00 $ttuation 2: A rectangular beam has a width of 375 mm ond an effective depth of 450 mm, f'c = 25 MPa, fy = 300 MPa. 4. Which of the following gives the maximum momen! capacity of the beam if steel area in tension As = 6000 mm?? Use 0.9 as the moment reduction factor, (kKN-m] a. 391.5000 sg: 546.0353 b. 416.6667 d. 485.6941 5. Which of the following gives the depth of stress block if steel In compression A's = 3000 mm? is added with a steel covering of 60 mm below the top of the beam? (in) a. 112.9412 c. 94,1176 b. 4.4465 d. 3.7054 Civi Engineering Problem A.Y. 2023-2024 fion has no correct e 6. Which of the following most nearly gives fhe moment capacity of the beom reinforcement for tension and compression? (kKN-m) a. 634.6560 c. 653.2006 b. 705.1733 d. 587-8805 Situation 3: Areinforced concreie beam has a width of 350 mm and on effective depth of 562.5 mm. It is reinforced for tension at the bottom of the section having an area of 4876 mm? and for compression at the top of the beam 625 mm below the extreme compression fibers of the beam. having an ~ area of 1530 mm?, f'c = 34.6 MPa. fy = 4147 MPa. Use NSCP 2010. e7- Which of the following most nearly gives the location of the neutral axis to the top of the compreion fiber (mm)? a. 171.1948 c. 175.6541 b. 174.9128 d. 173.6536 e & Which of the following most nearly gives the depth of compression block (mm)? a. 140.6243 c. 144.2873 b. 140.1633 cd. 141.1796 9. Which of the following gives the ultimate moment capacity in KN-m? 0. 903.8226 c. 907.7942 b. 919.8793 d. 900.2354 10. Determine the factored uniformly distributed load that the beam could carry if the beam is 6m long. including its weight. a. 199.8521 c. 201.7320 b. 204.4176 d. 200.8495 Situation 4: A reinforced concrete T-beam has ihe following properties: d=610mm bf = 1370 mm t= 130mm fc =28MPo bw = 300 mm fy = 414 MPa As = 2950 mm? Scanned with CamScanner 
