1) What does the NHBC do? a) Regulates the construction of windows and doors. b) Sets the standards for the new homes industry. c) Regulates the depth of foundations in non-traditional builds. 2) What are the most common type of foundation? a) Raft b) Deep Strip c) Trenchfill d) Ground Beams supported on Piled Foundations 3) What type of foundation would be used when the ground is inherently stable but conditions deep below the surface might lead to ground movement? a) Raft b) Deep Strip c) Trenchfill 4) Buildings standards require most new buildings to incorporate a damp proof course (DPC) at the time of construction. a) True b) False 5) Penetrating damp occurs only when ground water rises, therefore only affects walls in contact with the ground. a) True b) False 6) The first sign that condensation is a problem is when black pinpricks of mould appear on walls, ceilings and even furnishings. a) True b) False 7) Which of the following poses the more serious problem? a) Wet rot b) Dry rot  8) When might hogging occur? a) When clay is able to absorb more water than it had originally, therefore expanding, causing movement in the foundations. b) When the ground can no longer support the property, i.e. where previous mining activity has taken place. c) When a new building settles on the ground beneath. 9) What is eccentric loading? a) Older walls having poor galvanising to resist corrosion, leading to the wall ties become ineffective and the expansion causes horizontal cracks in the mortar joints which weakens the wall even more. b) The wall may fail by moving sideways and cause a bulge in the middle part of the wall. c) The walls slip along the line of the damp proof course. d) Outward leaning occurs when the load is not vertical and is the greatest threat to the stability of the wall.

Construction recap

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