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Assignment-5.CIVL232.Spring_2006

Assignment-5.CIVL232.Spring_2006 - CIVL 232 Design of...

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CIVL 232 Design of Structural Concrete Assignment 5: Anchorage bond and laps in reinforcement, design for torsion Assigned: Tuesday 11 April 2006 Due date: Thursday 20 April 2006 5.1 A cantilever beam with an overall depth h = 300 mm is shown in Fig. 5.1. 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 . Determine the total anchorage length required, when (a) straight bars are used; (b) 180° standard hooks are used; and (c) 90° standard bends are used. Fig. 5.1 5.2 In Fig. 5.2, column starter bars in the pad footing are T25 and the vertical bars in the column are T20. Determine the lap length required. f cu = 35 N/mm 2 . Fig. 5.2
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