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Errors in design and detailing are one of the common causes of failure and cracking in concrete structures. Design error is basically a deviation from a drawing or specification including omissions and ambiguities. A study by Building Research Advisory Service, UK, was carried out for analysing the reasons for causes of failures in buildings, which indicate that 58% of all failures are attributed to faulty design; 35% defects are attributed to faulty execution, and the rest to material failures or poor performance.
Some of the examples of improper design and common problems along with possible remedial measures are discussed in this chapter. Errors in design and detailing may include improper design of foundations resulting in differential movements and foundation settlements, lack of adequate movement joints and proper detailing of construction joints, improper detailing of reinforcement, restraint of members subjected to thermal volume changes, improper grades of slab surfaces, and overlooking the considerations of groundwater pressure and earth pressure while designing basements and water-retained structures and inadequate design loads.
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- Errors in Design and Detailing
- Chapter 12