Preparation weekly and monthly progress reports, variations, schedule and cost control. Updating schedule based on sub contractor 39 s performance, evaluation and progress control. Follow up construction material and execution works. Collect Variation and delays. Revise construction program and delays. Prepare and assist for construction extension of time. Prepare AUTOCAD drawings, shop drawings, and modifications. Prepare quantity take off and material. Material submittals and follow up. Prepare site histogram and earned value progress reports.