A 3.2 m high column is effectively held in position at both ends and restrained against rotation at one end only. Its diameter is restricted to 40 cm. If it carries a factored axial load of 1200 kN, then the reinforcement (in mm2) in column will be [Use M20 mix and Fe415 grade of steel]
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- EXAMPLE 6: Design the reinforcement in a spiral column of 400-mm diameter subjected to a factored load of 1500 kN. The column has an unsupported length of 3.4 m and is braced against sideway. Use M 25 concrete and Fe415 steelin 21- ő A steel beam is reinforced by three steel rods. The modulous of elasticity for concrete is 20Gpa and for steel is 200Gpa. Maximum allowable stress for concrete is 9.45Mpa and for steel is 140Mpa. Calculate the largest allowable positive WBT bending moment in the beam. иа mo maod motinu od o boblow need sved Ha bus 400mm aidT (alonnerlo ert to rigiow stongi)/4000E of Trup 200-0 signs or botuesom sWnworla es berloss M bris V zsra erli owob stiW maod sdi to mergeib insm brol bus borlism tuo sallimill nollor 10 nige over on The modulus of elasticity for concrete is 20Gpa and for the steel is 200 Gpa. Allowable stress for concrete is 9Mpa and for steel is 140Mpa. Calculate the maxium allowable bending momemt that can be applied per metal rod of the concrete slab. 150mm 200mm D=16mm 140 mm -22mm Diameter TOPABA t 50mm T 140 mm 140 mm 140 mmA steel column consisting of ISMB 400 has one end restrained against translation and rotation, while the other end is restrained against translation only. Its unsupported length is 5 m. Determine its axial load carrying capacity at service loads using the limit state design of IS: 800-2007. Design compressive strength Euler buckling stress fcc fcd fyly mo +[0²-2²10.5 $ = 0.5(1 + a(-0.2) +2²) fy fcc and λ = fcc = T²E KL 2 α = 0.34 for buckling class b = 300 MPa, Ymo = 1.1, Y₁ = 1.5 y E = 200 GPa Minimum radius of gyration for ISMB 400 = 28.2 mm, area of cross-section = 7846 mm².
- A rectangular beam has a width of 267mm and an effective depth of 495mm. It is reinforced with 4-25mm bars. The compressive strength of the concrete is 28MPa and the yield strength of the steel is 296MPa. The ultimate moment capacity is ___.A beam cast monolithically has the following properties: bf=1200mm, t or hf = 110mm, bw=380mm and h=800mm. It is reinforced with 10D32mm grade 420MPa bars. Concrete strength is assumed to be 27.5MPa and the centroid of tension reinforcement is located 665mm from the outermost compression fiber. A. Determine maximum nominal moment to ensure tension controlled, kN-m. B. Calculate the balanced steel area, mm2. C. Calculate the balanced moment in kN-m.A square hollow steel strut if thickness 10mm is pin connected to two connector plates of thickness, 12mm. The connector plates are welded to the base plate of thickness, 12mm. The base plate is fastened to te concrete base by 4-16mm diameter anchor bolts. The diameter of the pin is 16mm. Which of the following most nearly gives the shearing stress in the anchor bolts? Choices 150.00 MPa 59.68 MPa 51.69 MPa 119.37 MPa
- Calcualte the following: Total factored floor load in 2 decimal places, ___ kPa Total factored uniform load on girder GH in 2 decimal places, ___ kN/m Maximum ultimate bending moment at discontinuous end of girder JK to the nearest whole number = ___ kN·mS f A structure is to be built as shown supporting a uniform load of 18 kN/m. The location for the supports at A and B has been determined. The connection at C may be placed anywhere along the member AD 18 kN/m A C D 3 m B L -7 mi -5 m- If the allowable bending stress for member AD is 8 MPa, which among the choices gives the most economic section? Select the correct response: 275 mm x 550 mm 250 mm x 500 mm 300mm x 600 mm 225 mm x 450 mm rigidA concrete circular column with a radius of 350mm has f'c-25 MPa and is braced against sidesway. The column is assumed to be pinned on both ends with an unsupported length is 6.1meters. The column is subjected to the following service loads: Axial Dead Load =350 kN Axial Live Load=480 kN Moment due to Dead Load on the top of the column = 125 kN-m Moment due to Dead Load on the bottom of the column = 60 kN-m Moment due to Live Load on the top of the column = 122 kN-m Moment due to Live Load on the bottom of the column = 75 kN-m. If the moments bent the column in a singular curve, determine the following: 1. Critical Load on the column, kN 2. Moment Magnifying factor 3. Design Moment of the column, kN-m.
- Design the most economical section for a single span beam which carries a uniform load of 10 kN/m and has an unsupported span of 4m using ASD. It is subjected to a compressive load of 200 kN at its centroid. The beam is fixed at both ends. Use Narig @ 63% Stress Grade. Use NSCP 2015 as reference.Situation 2: A square hollow steel strut of thickness 10 mm is pin connected to two connector plates of thickness, 12 mm. The connector plates are welded to the base plate of thickness, 12mm. The base plate is fastened to the concrete base by 4-16 mm diameter anchor bolts. The diameter of the pin is 16 mm. 48 kN 4. Which of the following most nearly gives the bearing stress between the strut and the pin? a. 150 MPa steel strut c. 120 MPa b. 140 МPа d. 125 MPa 30 5. Which of the following most nearly gives the shearing stress in the pin? c. 103.37 MPa d. 119.37 MPa a. 110.46 MPa ь. 126 39 МPа base 6. Which of the following most nearly gives the shearing stress in the anchor bolts? c. 51.69 MPa d. 47.16 MPa plate a. 55.04 MPa b. 59.68 MPa connector plate anchor boltThe beam shown has the following properties: concrete cover=40mm, ds= 10mm, f'c=21 MPa, and fy=280 MPa. Determine the ultimate moment capacity of the beam in kN-m. Determine also the type of failure and the beam condition (under-reinforced, over-reinforced or balanced condition) 250mm 5-ø16mm h =450mm 50mm