A simply supported beam is post-tensioned by a straight tendon with an initial prestressing force of 2000 kN as shown in Figure 3. The beam will support a uniform service live load (SL) of 20 kN/m and a concentrated live load of 5 kN as shown. Determine the extreme concrete fiber stress (top and bottom) at a point 5 meters from the left support Situational Problem 14: under the initial condition (at transfer), when the initial prestressing force and weight of the beam is acting, using superposition, kPa; Situational Problem 15: under the final condition, after a prestress loss of 10% in the initial prestressing force due to anchoring and upon the application of the service live loads, using the internal-couple

A simply supported beam is post-tensioned by a straight tendon with an initial prestressing force of 2000 kN as shown in Figure 3. The beam will support a uniform service live load (SL) of 20 kN/m and a concentrated live load of 5 kN as shown. Determine the extreme concrete fiber stress (top and bottom) at a point 5 meters from the left support Situational Problem 14: under the initial condition (at transfer), when the initial prestressing force and weight of the beam is acting, using superposition, kPa; Situational Problem 15: under the final condition, after a prestress loss of 10% in the initial prestressing force due to anchoring and upon the application of the service live loads, using the internal-couple

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A cantilever beam, 100 mm wide by 240 mm high and 8 m long, carries a load that varies uniformly from zero at the free end to 1400 N/m at the wall. Compute the magnitude of the maximum flexural stress. Answer must be in MPa.
A 5-m simply-supported beam supports a uniformly distributed load equal to 40 kN/m applied throughout the beam. What is the maximum flexural stress if the beam has a rectangular cross-section with b = 300 mm and h = 600 mm? (in MPa) answer in 3 decimal places
A simply supported rectangular beam of length 6.45m has a width of 437.5 and an effective depth of 692.5. The beam is to be reinforced using 12 mm bars. The beam supports service dead loads of 31 kN/m and 39.5kN/m., respectively. the fc' is 28MPa, fy is 420MPa and Wu is 89.9kN/m. 1. what is the ultimate moment capacity of the beam? 2. what is the height of the equivalent stress block? 3. Determine the number of bars required for this beam
A 5-m simply-supported beam supports a uniformly distributed load equal to 40 kN/m applied throughout the beam. What is the maximum flexural stress if the beam has a triangular cross-section with b = 300 mm and h = 600 mm? (in MPa)
A trailer truck crossing a 10-m span circular beam ( D = 400 mm ) has axle loads of 7 kN, 9 kN, and 16 kN separated respectively by distances of 2 m and 5 m. Calculate the maximum bending stress and transverse stress developed in the beam.( detailed solution with FBD please, thank you) τmax = ? MPa σfmax = ? MPa
A cantilever beam, 53 mm wide by 153 mm high and 6 m long, carries a load that varies uniformly fromzero at the free end to 1000 N/m at the wall. (a) Compute the magnitude and location of the maximumflexural stress. (b) Determine the type and magnitude of the stress in a fiber 20 mm from the top of thebeam at a section 2 m from the free end.
A rectangular column 200×400mm is subjected to a compressive loads of 500Kn as shown in fig. Determine resultant stress at all corners of the column
A 40 mm. diameter bar is used as a simply supported beam 2 m long. Determine the largest uniformly distributed load which can be applied over the right half of the beam if the flexural stress is limited to 60 MPa.
A simply supported rectangular beam 50 mm wide by 100 mm deep, carries a uniformly distributed load of 1200 N/m over the entire length.1. Which of the following gives the max. length of the beam If the flexural stress is limited to 20 MPa. a. 3.11 m.b. 3.33 m.c. 3.44 m.d. 3.66 m.2. Which of the following gives the max. shearing stress of the beam. a. 0.30 MPab. 0.50 MPac. 0.40 MPad. 0.60 MPa3. Which of the following gives the max. deflection of the beam assuming E = 18000 MPa. a. 24.52 mmb. 25.72 mmc. 26.62 mmd. 28.82 mm
A beam simply supported on a 8 m span carries a uniformly distributed load of 30 kN/m over the middle 5 m. Using an allowable stress. fb = 120 MPa. A. Determine the most economical W shape beam, with the condition that the depth of the beam shoul not exceed 500 mm. B. What is the actual stress in the selected beam?
The figure shown below is a hollow pre-cast beam designed for a shopping mart somewhere in Cubao. This beam has a simple span of 10m and carries a dead load of 2350 N/m (including its weight) and a live load of 5490 N/m. Determine the stress diagram for the beam if it is subjected to a prestressing force of 353 KN applied at 40mm above the bottom of the beam.
11-58. The measured strains for an equiangular rosette, attached to a stressed aluminum alloy member,are E0 = +400 micro m/m,E60 = +400 micro m/m, and E 120 = -600 micro m/m. What are the principal stresses and in which directions do they act?Given E =70 GPa, and v = 0.25.