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...Chapter ii literature review sources of information for the estimator best source cost is a company that has had past experience why because accurate work pricing system would be preserved on actual quantity material specified amount labor or hours and equipment required to perform each task invaluable project control processes it important basis received develop data container schutte liska figure illustrates process collecting estimate estimating time quality base field reports building construction gathering elements imam soeharto puts forward an estimated complete if contains following purchase materials equipments prepare estimates purchases are very complex ranging from creating specifications looking conducting auction tender until pay price there various alternatives available these activities so when less precise handling can cause costs uneconomical b rental in addition also those used as auxiliary means not permanent such trucks tower cranes fork lifts graders scrapers other...