Contract Documents

1. Specification
-describes in words, the work to be built, quality of material, workmanship and testing requirement.
-must be defined and precise.
-3 categories:
a. material specification-required types,quality and testing
b. workmanship-quality and safety requirements
c. performance-required performance
-may include standard and particular specification.

2. Daywork Schedule
-the engineer may if in his opinion it is necessary/desirable order in writing that any additional/substitution work shall be executed on a daywork basis.
-the contractor payment for this work will base on the condition set out in the daywork schedule included in BOQ.

3. Provisional Sum
-a sum of money fixed by engineer included in BOQ which is only to be expended, either in whole,in part or not in all under engineers direction for execution of work or the supply of goods, materials, services, or for contingency.

4. Prime Cost
- a sum of money included in BOQ which will be used for execution of work,supply of good,services for the work.

5. Bonds
-contractor often required to obtain a security bond
-find banks or insurance company willing guarantee to meet any damage up to certain amount sustained by the employer as the results of failure and defaults of contractor.
-cost of bond vary with the reputation of the contractor and the risk associated with the work.

6. Variation Order
-variations include additions,omissions,substitutions,alterations.
-change in quality,position,level,dimension
-variation to any part of work will be ordered by the engineer if it is necessary for completion or functionary of the works.
-variation orders must be confirm in writing form although may given orally to the contractor.

7. BOQ
-give the anticipated quantity for each operation of construction as calculated from the drawing.
-easier for comparison of tender prices
-easier for evaluation of finish work in each stage.
-convenient for changes order and evaluation.
-measurement type wherein the contract price is accumulated in a BOQ.
-list the constituent items of work,each of which is priced up by individually by a tendering contractor.
-quantities of work are stated to be the best estimate prior to tender
-work items remeasured during the contract and valued at the rates tendered by the successful contractor.