In the assessment of an old building a simply supported rc

Question

Question 1:

A 6m span simply supported reinforced concrete beam carries a u.d. dead load of its self weight (based on 25kN/m³) + 10kN/m as well as a u.d. live load of 12kN/m. Assuming a beam section 250mm wide by 400mm deep, with d =350mm, design the tension reinforcement required to carry the mid-span moment, assuming f_ck=35N/mm² and f_yk=500N/mm²

Question 2:

In the assessment of an old building, a simply supported R.C. beam, with the section shown, spans 7m. The assessed loading is self weight + additional dead load of 12kN/m and live load of 10kN/m. Assume *f_cu=35N/mm², f_yk=410 N/mm² (use EC2  g_m values for convenience). Compute the capacity and state whether the beam is safe to carry the above loads.  Note: You will need to calculate f_ck from f_cu

Question 3:

Design a doubly reinforced concrete beam to carry a superimposed u.d. live load of 25kN/m over a span of 16m. The beam has a breadth of 300mm and an overall depth of 800mm. Assume f_ck=40N/mm² and f_yk=500N/mm²

Question 4:

Design the reinforcement for the beam shown below. Assume a section of h=750mm, b=300mm, f_ck=35N/mm², f_yk=500N/mm², cover=40mm, links=10mm.

Answer 1

In order to solve the following numerical questions based on Civil engineering, please apply the respective principles and concepts and provide the solutions. Question 1: A 6m span just supported reinforced concrete beam carries a u.d. dead load of its self weight (on the basis of 25kN/m3) + 10kN/m and also a u.d. live load of 12kN/m. Supposing a beam section 250mm wide by 400mm deep, having d =350mm, design the tension reinforcement needed to carry the mid-span moment, supposing fck=35N/mm2 and fyk=500N/mm2 Question 2: In the evaluation of an old building, a simply supported R.C. beam, having the section illustrated spans 7m. The evaluated loading is self weight + extra dead load of 12kN/m and live load of 10kN/m. Suppose *fcu=35N/mm2, fyk=410 N/mm2 (make use of EC2 gm values for convenience). Calculate the capacity and state whether the beam is safe to carry the above loads.