When a construction project is proposed, a feasibility study will be conducted to objectively review the strengths, benefits and weaknesses of the proposed project. The feasibility study will include, but not limited to , the estimated costs, potential returns, effects to the environment and adjacent structures, the feasibility of the proposed design, the site conditions, and other reports to determine whether the project will provide a suitable return for the required time and resource investment.
A report with layout drawings, boreholes logs, soil samples, laboratory test results together with the specialist’s interpretation will be produced for the engineer/architect’s reference to proceed with the design and specifications for the foundation. The foundation design will include the earthworks (the balance of cut and fill, re-use of suitable material, disposal of unsuitable material and the respective replacement), piling work, diaphragm walls and underground waterproofing work.
The designs of substructures and superstructures will also be carried out and substantiated by engineering analysis of each structural member and are converted and put into drawings. In this planning stage, the engineer will consider the various alternatives to achieve the requirements of the project in order to save cost and time.
Further designs of drainage work, utilities work, roadwork, external work, E & M works, building services, building finishes and landscaping work will be followed up and accomplished to form the set of engineering drawings after consideration of alternative solutions to meet the constructional and financial requirements.
Naturally the client wants to know as close as possible the forthcoming expenditure that will incur for the project, and also wish to see the project work will be finished at a minimum cost compatible with satisfactory materials, workmanship and time.
So, when the set of engineering drawings is available together with the determination of materials to be used, the apparent cost of the project will be then evaluated for the client’s consideration. The cost of the project will have to be amended as the revised architectural/engineering design demands, or vise versa until the decision of final design is made. In case the financial status mainly governs the size and sequence of the project, the client itself should know well about the schedules of its capital investment and expenditure.
After the architectural/engineering design is determined, a schedule of quantities for all the proposed works will be prepared and to ascertain the true cost of the project by entry of estimated unit rate against each work item. For the sake of not changing the design, the cost of budget can only be fine toned by the change of building material or lower requirement of specifications.
An estimate of capital cost (direct cost and indirect cost) and an estimate of capital expenditure (plant, labour, material, temporary works, fixed overhead, subcontractors, suppliers, operation and maintenance) will be well prepared in some kind of financial schedule to assess the economic viability. At the same time, an income schedule shall also be prepared to foresee the profitability and rate of return in case of a commercial project.
Financing of a project, particularly for a commercial project, may significantly affect the choice of size of project and type of contract to be selected by the client. In case the financial status mainly governs the size and sequence of the project, the client itself should know well about the financial schedule of its capital investment and expenditure. If short of funding, it should look for supports well in advance from outside parties or banks whence necessary.
No matter how much time and efforts have been spent on preliminary investigations and in engineering design stage , there are always unforeseen problems encountered in civil engineering projects after the commencement of work . In order to eliminate the situation of running out of budget , the client or its engineer usually allows a contingent sum of money to cover the unexpected additional works .
Disclaimer; This wiki article is contributed by our members without formal peer review and should not be taken as legal or contractual advice. All information read here is without any implied warranty of fitness for any purpose or use whatsoever. Even articles that have been vetted by informal review may later have been edited inappropriately, just before you view them.