Sr. Concrete Estimator Job Duties Responsible for detailed quantity take-off and preliminary pricing for multi-story cast-in-place concrete structures in California. Requirements 2. Must have a minimum of 10 years estimating self-performed multi-story cast-in-place concrete structures in California. 4. Must have excellent understanding of man hour production rates for various formwork systems and types, placing and finishing task based on historical data. 6. Strong knowledge of Excel, WinEst, Cost-OS, Timberline Precision Estimating, PlanSwift/On Screen Takeoff a plus. 8. Experience with...  more ->