Question 1 Figurel shows a structural plan of a typical floor in an 11 story laterally braced residential building. Wall

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Question 1 Figurel Shows A Structural Plan Of A Typical Floor In An 11 Story Laterally Braced Residential Building Wall 1 (76.02 KiB) Viewed 41 times

Question 1 Figurel Shows A Structural Plan Of A Typical Floor In An 11 Story Laterally Braced Residential Building Wall 2 (33.42 KiB) Viewed 41 times

Question 1 Figurel shows a structural plan of a typical floor in an 11 story laterally braced residential building. Walls of thickness same as the beam width are provided on all beams. Given Data: Live load : 3.0 kN/m Weight of Floor Cover : 2.0 kN/m Story height : 3.0 m yhrick :18 kN/m fcu : 30 MPa Steel for the reinforcement : 360/520 Steel for the ties or spiral :280/420 It is required to: a. Calculate the Ultimate load on the marked column C1 at the foundation level. b. Design column C1 as a Square column for the calculated axial load (at the foundation level). c. If column C1 was constructed to have the dimensions and steel reinforcement shown in Figure 2, and the owner of the designed structure approached you after a couple of years seeking your consultation on the applicability of increasing the number of stories to 13 instead of 11. Assuming that the regulations of the municipal authorities would not be violated and considering only column CI, which of the following would best describe your response? Support your answer with all necessary calculations. - Decline his request for increasing the number of stories. Approve the construction of only one additional story. Approve the construction of additional two stories as requested. d. Calculate the Ultimate load on the marked column C2 at the foundation level. e. Present the detailing of your design on a cross-sectional view to scale 1:10. f. If column C2 was designed to have the dimensions and steel reinforcement shown in Figure 3, and the owner of the project asked you during the design phase to consider one additional story in your calculations, what changes would you implement to column C2, knowing that the column dimensions cannot be changed for architectural reasons? Provide all necessary calculations. Question 2 Calculate the maximum and the minimum loads that an interior column can carry according the following data: Column cross section : 250 x 800mm fcu : 30 N/mm Fy : 360 N/mm
8 © 5.00 -5.00 200 2.00 B(250X600) +140 B/250x600) ( 8(250x600 B(250x600) B(120X600) B(250x600) 400 B(120x600) 120 1.40 @ B120x600) co 1.40 B:120x600) B250X600) 20 4.00 TOO9XDSZIG B120X600 B[250X 600 B/250x600 B/250x600) 1.40 500 5.00 Figure 1 0.40 22:22 0.40 0 0 20:22 0.60 Figure 2 Figure 3