-Q2.23-. A cantilever beam shown is reinforced with 7- 25 mmø at the top and 4- 16 mmø at the bottom. Beam b x h = 380 mm x 480 mm. Tie diameter = 12 mmø spaced at 80 mm o.c. Clear concrete cover (from concrete surface to outer surface of ties) = 50 mm. f'c = 21.7 MPa and fy = 410 MPa. Assume bars are laid in single layer. Answer the following: (1) Compute the development length of the 25 mm bars at the top. Use formula in section 425.4.2.3. (2) Determine the development length of the 16 mm bottom bars. (3) Determine the development length if the bottom bars are 25 mm in diameter. Use the editor to format your answer

-Q2.23-. A cantilever beam shown is reinforced with 7- 25 mmø at the top and 4- 16 mmø at the bottom. Beam b x h = 380 mm x 480 mm. Tie diameter = 12 mmø spaced at 80 mm o.c. Clear concrete cover (from concrete surface to outer surface of ties) = 50 mm. f'c = 21.7 MPa and fy = 410 MPa. Assume bars are laid in single layer. Answer the following: (1) Compute the development length of the 25 mm bars at the top. Use formula in section 425.4.2.3. (2) Determine the development length of the 16 mm bottom bars. (3) Determine the development length if the bottom bars are 25 mm in diameter. Use the editor to format your answer

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

4) A reinforced concrete one-way slab is built integrally with its supporting beams which are all 12 inches thick. The slab consists of two equal spans, each with a clear span of 14 ft. The service live load is 100 psf, and 4000 psi concrete is specified for use with steel with a yield stress equal to 60,000 psi. a. Design the slab, following the provisions of the ACI Code. b. Make a dimensioned sketch showing the slab section of one span. Label the reinforcement shown in your sketch.
1. Draw the design P-M diagram (moment about the X-axis) for a 18"x 18" column reinforced with 4#11 (As= As'=3.12 in²). The concrete strength F'c= 6 ksi and Fy= 60 ksi. The clear cover is 2.5" to the bar's centroid. Show calculations for the following five points: a) Pure axial compression b) Balanced Failure c) Strain in tension steel = 0.0 in/in d) Stress in tension steel = 0.5 Fy e) Strain in tension steel = 0.004 in/in f) Pure axial tension 2. Design the ties required
A rectangular beam has the dimensions b=12in., h=26in., and d=24 in. and is reinforced with three No. 11 bars so that As-4.68 in.². The normal-weight concrete compressive strength is 5000 psi. and the tensile strength (modulus of rupture) can be calculated as per ACI318-14. The Grade of the steel is 60. Determine the nominal moment strength M, and the moment capacity Mn. b=12 in. Figure 1. d=24 in. h=26 in.-
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. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f’c = 27 MPa and steel yield strength fy = 415 MPa for 20-mm bars and fy = 345 MPa for 16-mm bars. Determine the maximum steel ratio if the beam is singly reinforced in negative bending with the given material strengths and the tensile strain is limited to 0.005 upon crushing of concrete. Write the answer in 5 decimal places only.
Determine the maximum live load that the beam can carry if the beam depth is 600mm and beam width is 300mm. The dead load is 32 kN/m. The stirrup size is 12mm, the top bars are 2-20mm and the bottom bars are 5-32mm. The clear distance between layers of bottom bars is the bar size, 32mm. Use fc' = 28 MPa, Grade 60 reinforcements and concrete cover of 50mm. WDL = 32 kN/m (INCLUDING BEAM WEIGHT) WLL = ?? kN/m Wu kN/m 7.5m 600 od 300
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. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f’c = 27 MPa and steel yield strength fy = 275 MPa for 20-mm bars and fy = 230 MPa for 16-mm bars. determine the design moment capacity of the beam in positive bending. 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. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f’c = 27 MPa and steel yield strength fy = 275 MPa for 20-mm bars and fy = 230 MPa for 16-mm bars. determine the limitimg tensile steel ratio for a tension controlled condition in positive or negative bending with the given material strengths.
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)
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. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f’c = 27 MPa and steel yield strength fy = 415 MPa for 20-mm bars and fy = 275 MPa for 16-mm bars. Determine the maximum steel ratio if the beam is singly reinforced in positive bending with the given material strengths and the tensile strain is limited to 0.004 upon crushing of concrete. Write the answer in 5 decimal places only.
A rectangular beam has a width of 300mm and an effective depth of 537.50 mm to the centroid of tension steel bars. Tension reinforcement consists of 6 - 28mm dia in two rows, compression reinforcement consists of 2 - 22mm dia, fc' = 27.6MPa, fy = 414.7MPa, d' = 60mm, L = 4m, the Unit weight of concrete is 24.56kN/cu.m If the beam is simply supported carrying a uniformly distributed dead load of 10kN/m, a uniformly distributed live load of 5kN/m, the safe concentrated live load that it could carry acting at the midspan is _________kN. IS 456:2000
Top tie 4. Assume that the wet concrete (s.w. = 150 Ibf/ft3) behaves as a liquid. Determine the force per unit foot of length exerted on the forms. If the forms are held in place as shown, with the ties between vertical braces spaced every 2 ft, what force is exerted on the bottom tie? Brace Form 9 ft Concrete Bottom tie
a simply supported beam 300mm wide, 500mm deep and spans 5.7m supports a service super imposed dead load of 8kN/m and service live load of 7kN/m. concrete strength f'c=21MPa and steel yield strength fy=415MPa. concrete cover to bar centroid is 70mm. determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015.
1. A rectangular beam section is 10 in. wide and has a structural depth of 13.5 in. Reinforcement consists of two No. 8 bars. Given that the strength normal weight concrete is 4000 psi and there is NO shear reinforcement in the section, determine the nominal shear capacity allowed by the ACI Code. (5 pt) (Hint: No web reinforcement, so Vc = 8λ¸^(pw)¹/³√fcbwd shall be used).