The main advantage of an agreement that does not meet the criteria of a contract is that it is by nature informal. If contractors have a long-standing relationship and share a considerable degree of trust, the application of a contract can save time and flexibility in fulfilling agreed commitments. Agreements that do not contain all the necessary elements of the contract may also be more feasible in situations where contracting would impose a prohibitive burden on the parties concerned. The main advantage of contracts is that they define the specific conditions on which the contracting parties have agreed and, in the event of an infringement – if one or more parties do not comply with their obligations – serve as a guide to a court to determine the correct remedy for the aggrieved party or the parties. Even if the parties have a good relationship and trust each other, the use of a contract will provide an additional level of certainty that contractual commitments will be honoured by the intended parties. Contracts are generally advised because of less stringent agreements in all official or commercial cases because of the additional protection they offer. In this type of contract, the owner has more authorities in the supervision, inspection and audit of the project at regular intervals before the final payment. Therefore, the risk is transferred from the owner to the contractor and that would be an attraction for the customer.  The base date sets the date on which the terms under which the offer was established are considered known by the supplier and are therefore duly reflected in their price. If certain conditions change before the contract is implemented, the contract can be adjusted accordingly. This is all the more evident since the text contains a comprehensive agreement stipulating that lists and annexes are an integral part of this agreement and that references to this agreement contain its lists and annexes. In theory, the concept of this agreement could be construed as referring to that sentence or contractual clause (for example, the arbitration agreement.
B), but (i) if it contains relevance, plus ii) the likelihood that a party will claim that the agreement is only for one party, plus (iii) the likelihood that a court will accept that interpretation is far removed. Although it is superfluous, I personally prefer to use chords as a defined term. In the lump sum contract, all work is carried out according to plan and specifications by the contractor for a specified fixed amount, in accordance with the agreement. The owner provides the necessary information and the contractor calculates a certain amount. This contract is appropriate if the number of items is limited or if it is possible to develop exact amounts of work to be done. Detailed specifications of all work points, detailed plans and drawings, deposit, penalty, progress and other contractual conditions are included in the Convention. Although it is a lump sum and a planned contract, the contractor is paid at regular intervals of 2 to 3 months after demsol work on the basis of a certificate issued by the competent engineer.