Give the meaning and situations where the following type of payments are made to the contractor.

Secured advance
Interim payment

Secured advance
It is the advance given to the contractor for purchase of materials required for completion of work. The materials of only unperishable nature are considered and only 75% of cost of such materials is given to the contractor after the material comes on site. It is referred as secured advance because the authorities maintain a right over the ownership or securance of the materials brought by the contractor.
e.g. Advance for ‘street’ brought by the contractor.

Interim payment
It means the payment made on a running account to a contractor for work done or supplies made by him, when the work is still in progress. The work done or supplies are duly recorded in the measurement book and the contractor is paid from time to time in such a way that during progress of work he receives an amount which corresponds to the extent of work done by him.


Give the meaning of cost plus percentage contract and state the advantages and disadvantages of it.

Cost plus percentage contract
It is a contract between the owner and the contractor in which the contractor is given by fee for work execution as some percentage of the total final construction cost. The percentage may be fixed one or could be variable.

Advantages of cost plus percentage contracts

Suitable for fluctuating market conditions.

Work can be started without waiting for all the plans of work and detailed estimate.

A fixed % is guaranteed to the contractor and hence, he can work without financial tensions.

High quality of work can be obtained.

Disputes regarding extra item of work do not arise.

The contractor can reduce the final construction cost when he is being paid % for the amount of cost reduced. Hence, optimum use of materials and labour is achieved.

Work can be completed before time period hence reducing overheads etc.

Contractor can work in the owners interest only.


Disadvantages.

If the final cost increases by an appreciable amount the owner could be in financial crisis.

If the % given to the contractor is a fixed one based on the final cost the contractor may tend to increase the final cost.

Work of meagre quality may have to be demolished at the owner’s money and also changes in plans etc will effect the owners finance.

The contractor’s accounting may include intentional or unintentional mistakes and the owner may not be able to check them which will enhance the final cost.