The G&E Company is preparing a bid to build the new 50,000 seat Greendale baseball stadium. The construction must start on Monday June 22, 2020 and be completed in time for the start of the 2023 season. A penalty clause of $10,000 per workday of delay beyond May 24, 2023 is written into the contract. Ben Keith, the president of the company, expressed optimism at obtaining the contract and revealed that the company could net as much as $2 million on the project. He also said if they are successful, the prospects for future projects are quite good since there is a projected renaissance in building classic ball parks with modern luxury boxes. Technical Details of the Greendale Baseball Stadium The baseball stadium is an outdoor structure with a retractable roof. The project begins with clearing the site and continues according to the list of activities listed in the following table

ID Activity Du ration {days} Prcdccessor Aetivits) 1 Baseball Stadium 2 Clear stadium site 71') 3 Demolish surrounding buildings 30 2 4 Setup construction site 71') 3 5 Drive support piling 120 2 6 Pour lower concrete bowl 120 5 7" Four main concourse concrete 120 3,6 8 Install playing eld 90 3,6 9 Construct upper steel bowl 120 3,6 10 Install seats 140 ?,9 11 Build luxuryr boxes 90 ?,9 12 lnstalljumbotron 30 71,9 13 Stadium infrastructure 120 71,9 14 Construct steel canopy 75 IO 15 Light installation 30 I4 16 Build roof supports 90 6 1? Construct roof 180 I6 18 Install roof tracks 90 16 19 Install roof 90 1?,18 20 Inspection 20 8,11,13,15,19