CE $332$ CONSTRUCTION ENGINEERING AND MANAGEMENT

CLASSWORK

BRIDGE CONSTRUCTION EXAMPLE

$\backslash$table$[[\backslash$table$[[$Activity$],[$Number$]],$Activity Description,$\backslash$table$[[$Duration$],[($weeks$)]],$Resource Demand$],[1,$Set up site,$1,],[2,$Excavate left abutment,$6,$Excavator$],[3,$Excavate left pier,$4,$Excavator$],[4,$Excavate right pier,$4,$Excavator$],[5,$Excavate right abutment,$6,$Excavator$],[6,$Piledriving to right pier,$7,],[7,$Foundations left abutment,$8,$Concrete team for foundations$],[8,$Foundations left pier,$6,$Concrete team for foundations$],[9,$Foundations right pier,$6,$Concrete team for foundations$],[10,$Foundations right abutment,$8,$Concrete team for foundations$],[11,$Concrete left abutment,$9,$Concrete team for abutments and piers$],[12,$Concrete left pier,$7,$Concrete team for abutments and piers$],[13,$Concrete right pier,$7,$Concrete team for abutments and piers$],[14,$Concrete right abutment,$9,$Concrete team for abutments and piers$],[15,$Place beams left span,$4,$Crane$],[16,$Place beams centre span,$4,$Crane$],[17,$Place beams right span,$4,$Crane$],[18,$Clear site,,$]]$

PART $1.$ Construct a precedence diagram for bridge contruction assuming that there are unlimited resources: $4$ excavators, $4$ concrete teams for foundations, $4$ concrete teams for abutments and piers and $3$ crane teams. Thus, most of the activities can be carried out in parallel. Make necessary network calculations, indicate the Critical Path $($CP$)$ and calculate the project duration.

PART $2.$ Construct a precedence diagram for bridge construction assuming that there are limited resources: $1$ excavator, $1$ concrete team for foundation, $1$ concrete team for abutments and piers and $1$ crane team. Thus, the succeeding activities should wait for completion of preceeding activities and most of the activities should be carried out in series. Make necessary network calculations, indicate the Critical Path $(CP)$ and calculate the project duration.