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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 2 Examinations 2011/
Module Title: Structural Engineering Construction 2
Module Code: CIVL
School: School of Building and Civil Engineering
Programme Title: Bachelor of Engineering (Honours) in Structural Engineering
Programme Code: CSTRU_8_Y
External Examiner(s): Dr. M. Richardson Mr. J. O’Mahony
Internal Examiner(s): Mr. D. Cadogan
Instructions: Answer four (4) out of five (5) questions
Duration: 2 hours
Sitting: Summer 2012
Requirements for this examination: Graph paper
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt, please contact an Invigilator.
- (a) A feasibility study is initiated by a client who wishes to assess whether it is worthwhile proceeding with a project proposal. As a result, it is crucial that the client is kept fully informed and involved, especially when the scope and design of the proposed project is to be finalised. In this regard, discuss the feasibility study process in terms of the details required from the client to formulate the project brief and the process by which each of the available options can be assessed and presented for approval to the client. ( 6 marks)
(b) A storage facility company is considering installing a specialist temperature-controlled unit, where a sum of €1,235,758 is needed to cover the initial capital costs. Relevant information has been provided by the client regarding the expected cash flows for the initial six years of operation, as set out in the table below, which is viewed as the limit for a return on the investment for the company. Calculate: basic payback period discounted payback period for a discount rate of 8.3% Net Present Value (NPV) of the project over this period (indicating whether it is viable to proceed with the investment) for a discount rate of 8.3% Profitability Index (PI) of the project at that point Internal Rate of Return (IRR) for this cashflow and period of time (11 marks)
Year Cashflow
0 (€1,235,758) 1 €294, 2 €351, 3 €286, 4 €239, 5 €129, 6 €307,
(c) In regard to your site visit to the N25 South Ring Road upgrade construction project last March, describe in detail the concrete modulus column (CMC) form of soil stabilisation system and load transfer platform (LTP) method used on site to form a foundation for the road network to be constructed at that location. (8 marks)
- (a) The main forms of deep piles are the driven and bored types – describe the basis for the construction of each, and explain in detail the main installation differences between the CFA and standard auger boring processes, using diagrams as necessary. (7 marks)
(b) There are particular advantages and disadvantages in relation to the use of the more common materials found in the design and construction of a multi-storey building, including steel, cast in- situ concrete and precast concrete – describe these in detail. (8 marks)
(c) Describe the use and structure of a raft foundation under a domestic dwelling, using sketches to illustrate the construction process involved. (4 marks)
(d) Describe the main factors which must be taken into consideration in regard to the main phases of the demolition of a multi-storey structure, in order to be able to assess and formulate plans for at the design , planning and implementation stages. ( 6 marks)
