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Q3// For the simply supported prestressed concrete beam shown in Fig. 3, determine the depth of section (h) and the required area of prestress steel (Aps) to cause zero tensile stresses in concrete at both initial and service stages. Assume total losses (20%), initial prestress stress (fi= 1000 N/mm²), and ye = 25 kN/m³. P₁=60 kN (25 marks) h/2 Fig.3 6 m 6 m h/3 Aps b=370 mm

Q3// For the simply supported prestressed concrete beam shown in Fig. 3, determine the depth of section (h) and the required area of prestress steel (Aps) to cause zero tensile stresses in concrete at both initial and service stages. Assume total losses (20%), initial prestress stress (fi= 1000 N/mm²), and ye = 25 kN/m³. P₁=60 kN (25 marks) h/2 Fig.3 6 m 6 m h/3 Aps b=370 mm

Structural Analysis
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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Q3// For the simply supported prestressed concrete beam shown in Fig. 3, determine the depth of section (h) and the required area of prestress steel (Aps) to cause zero tensile stresses in concrete at both initial and service stages. Assume total losses (20%), initial prestress stress (fi= 1000 N/mm²), and ye = 25 kN/m³. P₁=60 kN (25 marks) h/2 Fig.3 6 m 6 m h/3 Aps b=370 mm
Transcribed Image Text:Q3// For the simply supported prestressed concrete beam shown in Fig. 3, determine the depth of section (h) and the required area of prestress steel (Aps) to cause zero tensile stresses in concrete at both initial and service stages. Assume total losses (20%), initial prestress stress (fi= 1000 N/mm²), and ye = 25 kN/m³. P₁=60 kN (25 marks) h/2 Fig.3 6 m 6 m h/3 Aps b=370 mm
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