The end block of a post-tensioned beam is 100 mm x 150 mm. A prestressing cable consisting of 7 wires of 6 mm dia strand and stressed to 800 MPa has to be anchored at the center of the block. The anchorage plate is 75 mm x 75 mm. If the concrete mix is M45 and the permissible bending stress in M. S. steel plate is 165 MPa, determine the thickness of the anchorage plate.

The end block of a post-tensioned beam is 100 mm x 150 mm. A prestressing cable consisting of 7 wires of 6 mm dia strand and stressed to 800 MPa has to be anchored at the center of the block. The anchorage plate is 75 mm x 75 mm. If the concrete mix is M45 and the permissible bending stress in M. S. steel plate is 165 MPa, determine the thickness of the anchorage plate.

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter9: Composite Construction

Section: Chapter Questions

Problem 9.1.3P

See similar textbooks

Similar questions

A rectangular beam 250 mm wide, 500 mm deep is reinforced at thebottom with 4-20-mm-diameter bars and at the top with 2-16-mmbars. Concrete cover to bar centroid at the top is 80 mm and at thebottom is 70 mm. Use concrete strength f’c = 21 MPa and steel yieldstrength fy = 415 MPa for 20-mm bars and fy = 275 MPa for 16-mm bars. 1. Determine the limiting tensile steel ratio for a tension controlledcondition in positive or negative bending with the given materialstrengths. ρt = [r] in 5 decimal places (ex. 0.00001)
For non-prestressed flexural members, the maximum strain for the rebar shall be 0.004 if the compressive load is less than _____ of the compressive strength of the member. a) 10% b) 50% c) 25% d) 17%
A prestressed beam has a cross section of 250 mm x 500 mm and has a simple span of 6 m. The tendons are placed 70 mm above the bottom of the beam. The wires used are stress relieved tendons with fpu= 1350 MPa and fpe= 760 MPa, fc'=35 MPa. The prestressed beam is not to be grouted after application of the prestress. Aps= 1000 sq. mm Compute the stress in prestressed reinforcement at nominal strength. Compute the ultimate moment capacity of the prestressed beam. Compute the safe live load that the prestressed beam could carry.
A beam has a flange width of 810mm and a slab thickness of 50mm. The width of the web section is 300mm and it has an effective depth of 550mm. It is reinforced at the bottom with a steel area of 1750mm2. fc’ = 20MPa, fy = 400MPa. The magnitude of the compressive force of concrete is ____kN
Topic: Singly Reinforced Concrete A simply supported concrete beam 6m long is reinforced with four-28mm diam. tension barss. The beam has a width of 300mm and overall depth of 400m. The steel covering to the centroid of the reinforcements is 70mm, fc’= 30 MPa and fy= 418 MPa. A. Draw the stress diagram. B. Compute for the Ultimate capacity of the beam Note: Don’t conclude compression bars.
The wood pole is supported by two cables of 1/4 in. diameter. The turnbuckles in the cables are tightened until the stress in the cables reaches 60000 psi. If the working compressive stress for wood is 200 psi, determine the smallest permissible diameter of the pole.
A simply supported beam 300 mm wide, 500 mm deep and spans 5.2 m supports a service super imposed dead load of 12 kN/m and service live load of 8 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. 1. Determine the maximum ultimate moment (in kN-m) the beam must resist using load combination of NSCP 2015 2. Determine the required depth of uniform stress block (in mm) upon crushing of concrete when ultimate load is applied. 3. Determine the required amount of tensile reinforcement (in mm^2)
an exterior beam has 300 mm and a height of 600 mm, it is reinforced with 5-p25 mm bars for tension which is laid out according to the code requirements. the depth of the tension strain of the beam is 353 mm. of the steel has a yield strength of 414 mpa. determine the following: Compressive strength of the concrete Maximum steel ratio Ultimate moment capacity of the beam
An exterior beam has a base of 300 mm and a height of 600 mm, it is reinforced with 5 - 25mm diameter bars for tension which is laid out according to the code requirements. The depth of the tension strain of the beam is 340 mm. If the steel yield strength of 414 MPa. Determine: a) Compressive strength of the concrete b) Maximum Steel Ratio c) Ultimate Moment Capacity of the Beam
A prestressed beam has a cross section of 250 mm x 500 mm and has a simple span of 6 m. The tendons are placed 70 mm above the bottom of the beam. The wires used are stress relieved tendons with fpu= 1350 MPa and fpe= 760 MPa, fc'=35 MPa. The prestressed beam is not to be grouted after application of the prestress. Aps= 1000 sq. mm 1. Compute the stress in prestressed reinforcement at nominal strength. a. 868 MPa b. 960 MPa c. 759 MPa d. 672 MPa 2. Compute the ultimate moment capacity of the prestressed beam. a. 158 KN-m b. 225 KN-m c. 290 KN-m d. 327 KN-m 3. Compute the safe live load that the prestressed beam could carry. a. 35.49 KN/m b. 38.07 KN/m c. 40.95 KN/m d. 31.87 KN/m
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with 4-20-mm-diameter bars and at the top with 2-16-mm bars. The concrete cover to bar centroid is 80 mm and at the bottom is 70 mm. use concrete strength f'= 21 MPa and steel yield strength fy=415 MPa for all bars. 1. Determine the tensile steel ratio when the beam is in positive bending. a. 0.01567 b. 0.01283 c. 0.01169 d. 0.01923 2. Determine the nominal moment capacity in kN-m of the beam in positive bending. a. 188.30 b.167.70 c.218.96 d.193.68 3. Determine the tensile steel ratio when the beam is in negative bending. a. 0.00406 b. 0.00475 c.0.00383 d. 0.00508 please provide a complete solution so I can understand. Very much appreciated to solve it early !!
A reinforced concrete beam has a width of 325mm. and a total depth of 450 mm. It has an effective depth of 375 mm and isreinforced with steel reinforcement having a total steel area of 1875 sq.mm. in one layer fc’ = 27.6 MPa and fy = 414.7 MPa. a. Determine thedepth of the compression blockb. Determine thetotal compressive force of concretec. Determine theultimate moment capacity of the beam