You are a Structural Engineer working in a structural repair andrehabilitation consulting firm. You have been assigned to providethe answers and solutions for the following job: “Some cracks wereobserved on a suspended reinforced concrete slab on an existingpublic building. As these cracks raised public concerns, the ownerhas decided to carry out a structural investigation into the causeof cracking to check the structural integrity and determine theremedial works to be done.†(a) Outline and explain the process ofinvestigation that would be recommended to identify the causes ofthe cracks.
(b) State Four (4) possible causes of the cracks?
(c) Propose Three (3) suitable tests to estimate the in-situconcrete strength.
(d) From the investigation, it was found that the cracks are dueto structural overloading. Recommend a method to strengthen theexisting slab and suggest a method to repair the crack.
