1) Which of the following is NOT a common method of basement construction? a) Top Down Method b) Bottom Up Method c) Tunneling d) Side-in Method 2) What is the primary purpose of temporary works in basement construction? a) To provide ventilation b) To support existing buildings and the ground around excavations c) To enhance waterproofing d) To construct retaining walls 3) What is the main advantage of multi-stage underpinning? a) Reduces vertical load b) Eliminates the need for temporary propping c) Allows shallower individual underpin excavations d) Increases excavation speed 4) Which type of waterproofing system relies on the structure itself for water resistance? a) Type A b) Type B c) Type C d) Type D 5) Which method of excavation is suitable for shallow basements with good access? a) Complete excavation with sloping sides b) Complete excavation timbered c) Perimeter trench method d) Cofferdam 6) In the Top Down Method, what is constructed first? a) Basement walls b) Basement ground slab c) Intermediate level slabs d) Bulk excavation 7) In basement construction, what do diaphragm walls primarily use for stability? a) Bentonite slurry b) Timber bracing c) Steel piles d) Concrete slabs 8) What is the maximum unsupported length typically allowed in underpinning? a) 0.8 metres b) 1.2 metres c) 1.5 metres d) 2.0 metres 9) What is the primary function of horizontal propping in basement construction? a) To support vertical loads b) To resist horizontal forces c) To prevent water seepage d) To enhance thermal insulation 10) Which waterproofing grade is suitable for car parking and workshops where seepage is tolerable? a) Grade 1 b) Grade 2 c) Grade 3 d) Grade 4 11) In the Bottom Up Method, what is installed after the bulk excavation is started? a) Basement walls b) Horizontal propping at high level c) Basement ground slab d) Intermediate level slabs 12) What type of underpinning requires the adjoining owner's agreement under the Party Wall Act? a) Mass concrete underpinning b) Reinforced concrete underpinning c) Multi-stage underpinning d) Timber underpinning 13) Which of the following is NOT a method of excavation listed in the document? a) Perimeter trench method b) Caisson method c) Cofferdam d) Diaphragm walls 14) Which type of basement construction often requires horizontal propping during intermediate level slab construction? a) Top Down Method b) Bottom Up Method c) Tunnelling d) Side-in Method 15) What is the main disadvantage of mass concrete underpins for basement walls? a) Requires additional inner RC wall for horizontal strength b) High cost c) Time-consuming d) Requires special foundation consent 16) What is the key feature of Type C waterproofing systems? a) Integral protection b) Drained cavity protection c) Barrier protection d) Membrane application 17) Which of the following is a common use for Grade 3 waterproofing? a) Car parking b) Plant rooms c) Ventilated residential areas d) Workshops 18) What is the purpose of cofferdam construction? a) To support vertical loads b) To keep water and/or soil out of the excavation c) To enhance thermal insulation d) To provide horizontal propping 19) What does the Party Wall Act call a reinforced concrete underpinning? a) Standard Foundation b) Special Foundation c) Mass Foundation d) Temporary Foundation 20) Which method is NOT used for supporting the retaining walls of basement structures? a) Underpinning b) Piling c) Tunnelling d) Sloping sides

Basement construction

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