Contractor's control over the execution of the projects takes several forms and generally its extent depends on the size,nature and complexity of the particular construction project,contractor's skill and organizational and control policies.The planning and programming establish the standard against which site progress will be measured and,to achieve effective control,the contractor ensures that resources for the construction of the project are efficiently combined and the production constantly monitored.ProMeta monitoring cycle starts with measuring the actual output and comparing it against the planned performence.When this exercise reveals deviation,the causes of the deviation are analyses and corrective measures devised and implemented to correct the variance.The cycle is repeated by measuring the revised performance and comparing it to the standard.The process is repeated and the appropriate measures adopted until the planned performance is achieved.The desired result of this control is judged in quantity, quality and safety aspects of production.Also,the economy of production depends on the establishment of effective site control to achieve proper allocation of well defined tasks, setting of targets and making sure that the targets are not lost by some reasons.
