Assignment-5.04

Assignment-5.04 - f cu = 30 N/mm 2 , f y = 460 N/mm 2 , f...

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CIVL 232 Design of Structural Concrete Assignment 5 (Tuesday, 13 April 2004): Torsional resistance, anchorage bond and laps in reinforcement 5.1 A rectangular RC beam section is 300 mm wide and 500 mm deep. It has been designed for bending, where the estimated areas of tension and compression reinforcement are 2,800 mm 2 and 700 mm 2 , respectively. If the section is subjected to an ultimate shear force of 250 kN and an ultimate torsional moment of 30 kNm. Determine a suitable arrangement of shear and torsional reinforcement and sketch the reinforcement layout, given that f cu = 30 N/mm 2 , f y = 460 N/mm 2 , f yv = 250 N/mm 2 . 5.2 A beam section is to be designed as shown in Fig. 5.2. If a torsional moment will be applied to the member, determine the factored torque given that
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Unformatted text preview: f cu = 30 N/mm 2 , f y = 460 N/mm 2 , f yv = 250 N/mm 2 . Fig. 5.2 5.3 A cantilever beam is shown in Fig. 5.3. The 25 mm diameter deformed steel reinforcing bars are used as the main bars in the beam. The characteristic material strengths are f cu = 30 N/mm 2 and f y = 460 N/mm 2 . (a) Determine the length of tension anchorage required if straight bars are used. (b) Determine the development length needed if 180° hooks are used. (c) Determine the development length needed if 90° bends are used. length anchorage half effective depth = l Fig. 5.3 5.4 In the column shown in Fig. 5.4, the starter bars from the pad footing are T25 and upper ones in the column are T20, given that f cu = 35 N/mm 2 . What is the minimum lap length needed? Fig. 5.4...
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Assignment-5.04 - f cu = 30 N/mm 2 , f y = 460 N/mm 2 , f...

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