A 450 diameter concrete spiral column is to be desigmed to support a factored axial load of 3200 kN. Clear bar covering is 40 mm and the aggregate size is 25 mm. Use the 2010 NSCP with fc= 28 MPa, fy = 415 MPa, fyt = 415 MPa. Limit the gross steel percentage to 2%. Find the following a) The mumber of pcs of 28 mm diameter bars for the longitudinal reinforcements. b) The spacing of the 10 mm diameter spiral reinforcements in mm. c) Which of the following mostly nearly gives the clear spacing of the main longitudinal reinforcements in mm.

A 450 diameter concrete spiral column is to be desigmed to support a factored axial load of 3200 kN. Clear bar covering is 40 mm and the aggregate size is 25 mm. Use the 2010 NSCP with fc= 28 MPa, fy = 415 MPa, fyt = 415 MPa. Limit the gross steel percentage to 2%. Find the following a) The mumber of pcs of 28 mm diameter bars for the longitudinal reinforcements. b) The spacing of the 10 mm diameter spiral reinforcements in mm. c) Which of the following mostly nearly gives the clear spacing of the main longitudinal reinforcements in mm.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

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