1. Design a round spiral column to support an axial dead load of 1200 kN andlive load of 1500 kN. Use gross steel ratio of approximately 3%. Assumefc' = 28 MPa and fy = 415 MPa. Use 25 mm bars for mainreinforcement and 10 mm bars for spiral reinforcement. Use NSCP 2015.a. Compute for the required area of steel.b. Determine the number of longitudinal bars.

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Answered: 1. Design a round spiral column to…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Answer the following for the section at Point D Only Calculate the distributed load "w" that: Will cause the section crack Will cause the reinforcement to yield. Material Properties: F'c = 5000 psi Fy = 60000 psi Es = 29000000 psi Ln = 27 ft L wl₂² 16 wl,² 14 CD L wl,2 vl₁² 10 11 win² 16 h: 28 in A=4 in² b=14 in n d: 25 in
Calculate the design bending strength for the doubly reinforced rectangular section where A’s = 2500 mm2 f’c= 30 MPa & fy = 350 MPa if As =8500 mm2
Design the reinforcement of a rectangular beam to resist a dead load moment of 200kN.m (including its own weight) and a live load moment of 300kN.m. The beam is limited in size to 350mm by 600mm overall depth. Steel covering from centroid of bars to outermost fiber is 100mm for both tension and compression reinforcement. Use fc'=27.5Mpa, fy = 414MPa,20mm barsA. As'= 7 of 20mm and As=14 of 20mmB. As' = 9 of 20mm and As=18 of 20mmC. As'= 5 of 20mm and As=10 of 20mmD. As' = 3 of 20mm and As=6 of 20mm Please provide neat and clear solutions
Find the maximum allowable value of P for the column. The cross-sectional areas and working stresses (ow) are shown in the figure. |2P Steel: A = 500 mm2 Ow = 120 MPa P Timber: 4P A = 2000 mm? Ow = 12 MPa Concrete: A = 8000 mm? O = 16 MPa
Design a reinforcement of a doubly reinforced beam if the beam has a size of 425 mm x 600 mm. Use fc = 21MPa , fy = 414MPa
S9. Knowing that the allowable normal stress for the steel used is 150 MPa, select the most economical metric wide-flange beam to support the loading shown in Figure 9.0. 50 kN/m A D B -2.4 m- 0.8 m 0.8 m Figure 9.0 $10. Determine the average shearing stress in the web of the beam indicated and check whether the design obtained earlier for that beam is acceptable, knowing that the allowable shearing stress for the steel used is 110 MPa. Consider the beam of $9 above.
A beam has an f'c = 5000 psi, fy = 60000 psi, reinforcement ratio = 0.0137. Which of the following is most likely true about the strain in the extreme tension steel? Use the tables posted to Canvas as needed (The ones in the back of the book). The strain is = 0.005
Problems 6 - 7: Design the following sections by finding As and A's. Mu is provided below the figure. Use fy = 60,000 psi, f'c = 4000 psi. Start the design by verifying that compression steel is needed to meet the required strength. Once you have calculated A, and A's, select bar size and # using the tables, then show that the actual resultant steel areas satisfy the design requirements listed below: 14" Use Mu =900k-ft capacity: Mn > Mu/ ductility: &t >= 0.005 (note: it is not required that &'s > 0.00207) minimum steel: As > As,min 3" 23" 3" stut. * 10" 8" 8" Use Mu=300k-ft 3" 14" 3"
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Use 3 decimal places. Assume that steel yields.
B4
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