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Table 5 Cumulative supply and cumulative demand of all materials

From: Resource-loaded piping spool fabrication scheduling: material-supply-driven optimization

Material name 6″, Sch.40 Pipe 2″, Sch.80 Pipe 3″, Sch.40 Pipe 2″, Sch.80 Elbow 6″, Sch.40 Elbow 2″, Sch.80 Flange
Time Quantity Time Quantity Time Quantity Time Quantity Time Quantity Time Quantity
Supply 0 5 0 1 0 1.3 0 1 0 4 0 1
120 22.4
Demand 0 0 0 0 0 0 0 0 0 1 0 0
12 0.6 174 1 362 1.3 54 1 12 3 54 1
27 1.2 115 4
84 3.9
115 4.5
185 16.6
274 22.4
Material name 3″, Sch.40 Flange 2″ × 6″, Sch.80/Sch.40 Olet 6″ Hydro pipe 6″ × 3″, Sch.40 Reducer 6″, Sch.40 Tee   
Time Quantity Time Quantity Time Quantity Time Quantity Time Quantity   
Supply 0 0 0 0 0 1 0 0 0 1   
180 1 180 1 120 1   
Demand 0 0 0 0 0 1 0 0 0 0   
447 1 313 1    221 1 84 1