Explain how premature failure of limework (lime mortar and render) can be prevented and how remedial work should be conducted when failures occur. Sketches may be used to illustrate your answer. (35 marks).
Question 2
Scenario: Assume you are a qualified surveyor working for a consultancy specialising in building surveying. Your company is retained by a housing association to advise on the condition and maintenance of its stock. Your client has instructed your company to carry out a fire risk assessment on a 12 storey, residential, tower block in central Portsmouth. You have been assigned to the team that will carry out the assessment and your team leader has given you responsibility for assessing the structure and fabric of the building. Your company previously surveyed the building for maintenance purposes in 2016 and a file note from the survey records the following construction details:
Building age 50 years. Reinforced concrete frame, floors and flat roof. External wall refurbished in 2015. Aluminium Composite Material (ACM) rainscreen cladding over mineral wool insulation, fixed to the floor perimeters and covering the original dense concrete block spandrel panels. Coated aluminium framed double glazed windows. Single staircase. Two lifts (elevators). Rubbish chute. Some flats have gas supply for central heating purposes. Heating, hot water and cooking is predominantly electrical. Mechanical extract ventilation is provided to all bathrooms and kitchens.
Task: Explain how you would conduct a survey of the structure and fabric of the building for the fire risk assessment. State the main hazards and defects that would concern you and explain how they should be remedied. Your answer must be related to the scenario described above. Sketches may be used to illustrate your answer. (35 marks).
Question 3 Critically evaluate the potential role of Building Information Modelling (BIM) in the prevention and remediation of defects in buildings and building services. (30 marks