Tender stage

Caiciiiations can be sensitive to the interest rate (Fig- 16.2) and the time ol the calculation period (fig. 16.3), which is the utilization time or the life cycle of the device. Thus, it is often advisable to consider sensitivity analysis for these factors. Elements of uncertainty can also be found in the estimation of energy consumption and investment (in design phase at the pre-tender stage). 

It is important that you inform the subcontractor through the contract of how the product or service will be accepted. Will it be as a result of receipt inspection at the specified destination or as a result of acceptance tests witnessed on site by your authorized representative These details need to be specified at the tendering stage so that the subcontractor can make provision in the quotation to support any of your activities on site. If you have invoked ISO 9001 in the subcontract, you are protected by clause 4.6.4.2. If you have not, you need to specify a similar provision in your subcontract, otherwise you may lose the right to reject the product later. There is no requirement for you to document your proposal to verify product at the subcontractor s premises but such a plan would indeed be a useful section in any quality plan that you produced. (See also Control of subcontractors in this chapter.)... 

The following dimensional drawings would normally be reqnired at the tendering stage of a project, so that comparison can be made between the varions tendering mannfactnrers,... 

Revised versions of the documents submitted at the tender stage. 

Pneumatic hammers are labour intensive but have low capital cost and are very versatile. They will cut behind the bars and get between them. Research by the Strategic Highway Research Program (SHRP) has shown that the contract terms for a repair job are a major influence upon the contractor s decision as to how concrete removal is done (Vorster, 1992). If concrete removal is in small areas, pneumatic hammers are more practical than the larger plant such as hydrojetting or milling equipment discussed later. If the area of concrete to be broken out undefined at the tender stage and the contractor is paid by the square metre (or cubic metre) there is less risk with a low capital cost approach like pneumatic hammers. 

Occasionally, lump sum contract is adopted for foundation construction which should be avoided whenever possible (Chan 1996). The usual reason is that the client wants to fix the limit of his financial commitment and pass the financial risk of variation to the contractor. However, such a step has wide implications which are often not appreciated by clients. This is because at the tender stage, it is usually very difficult, sometimes impossible, to quantify all the technical and financial risks in the foundation construction. For example, in a difficult ground the real cost of foundation construction can exceed the estimated cost by 50% or more. As a result the tender has an element of gambling involved. The problem will arise if the ground conditions turn out to be far more unfavorable than were expected and this may place unbearable pressure on the contractor. In a worst case, the contractor may be tempted to choose between finaneial ruin or sacrificing the safety of a foundation, thereby jeopardizing the entire project. In view of the above, lump sum contract represent unsound business practice for both the contractor and the client. 

The contractor submitted both compliant and alternative tenders during the tender stage, and upon award of the contract the client became receptive to the development of the alternative tender. The aims of the alternative tender were to reduce ... 

Contingency plans should be drawn at the DPR/ Tender stage itself for the worst case scenarios that might arise out of geological, seismological or other similar events. 

An important step in ensuring health and safety in contract situations hes at the tender stage. The principal needs to ensure that there is evidertce that the corrtractor has an adequate OHS system, and a good accident record. (The latter can be difficult for contractors just starting out.) Principals using a preqrralificatiorts system which screens contractors out before they can even submit a bid, rrtake it even more difficrrlt for a new comparty. 

Arup s remit was to work with Paul Smith Architects (a pseudonym), to develop their concepts through detailed design to tender-stage drawings. Key moments in the project are described - the development of the scheme design and the detailing of an element of the roof structure. 

The planning supervisor is responsible for ensuring that the pre-tender stage health and safety plan is prepared so that prospective principal contractors can be fully aware of the project s health, safety and welfare requirements. It also helps the client to assess the resources being allocated to health and safety and the competence of the prospective principal contractor. 

Tender stage - against the specific needs of the contract. 

A summary of the matters which should be addressed at the pre-tender stage is given in an Appendix to the Approved Code of Practice to the Regulations, which should always be consulted. This shows the topics which should be covered where relevant to the project ... 

HSC (1995) Managing construction for health and safety Construction (Design and Management) Regulations 1994 Approved Code of Practice. London HSE, Appendix 4, see also HSE information sheet no 42, The pre-tender stage Health and Safety Plan and HSE information sheet no 43, The Health and Safety Plan during the construction phase. 

Health and Safety Executive (1995) Construction (Design and Managemen) Regulations 1994 The pre-tender stage health and safety plan. HSE construction information sheet no 42, London HMSO. 

Therefore the collection of information during the tender stage on the prevailing weather and sea conditions at the project site in the anticipated construction period is essential. These data may have a bearing on ... 

As the presence of currents in the borrow -, transport - and reclamation areas can significantly affect the dredging operations, information about currents during the tender stage is essential for the Contractor. 

The consolidation rate can be accelerated by installing prefabricated vertical drains. The design of the vertical drain system is usually the responsibility of the Contractor, since it is related to the adopted construction program. Sometimes the drain spacing (triangular or rectangular) and depth are specified in Contract documents. Since the performance of a vertical drain system is not accurately predictable, field trials are recommended. Sufficient time for such trials should then be foreseen in the project schedule or executed before tender stage. 

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