Presentation on theme: "Activity Produce a project plan – George Bailey has bought a plot of land on which he wants to build a house. The house will be two storeys high and will."— Presentation transcript:
Activity Produce a project plan – George Bailey has bought a plot of land on which he wants to build a house. The house will be two storeys high and will be built by a number of contractors. George has broken down the building of the house into the following activities and has made estimates of how long each activity will take.
Dig the foundations 2 days Lay the foundations and let them dry6 days Lay the ground floor and let it dry2 days Build the ground floor external walls4 days Lay the first floor and erect g/f ceiling3 days Insert the ground floor windows and doors3 days Build the g/f internal walls and floors3 days Plaster the d/stairs walls and ceilings allow to dry4 days Erect the stairs1 day Build first floor external walls4 days Erect the roof joists and f/f ceiling5 days Build f/f internal walls and doors3 days
Plaster f/f walls and ceilings let them dry4 days Tile the roof5 days The foundations cannot be laid until they have been dug and no other work can take on the house until the foundations are dry. Once the foundations are dry work can start on the external walls and on laying the ground floor. The ground floor external walls have to be complete before the doors and windows can be put in. The ground floor has to be covered before the internal walls can be erected or any plastering takes place (to protect from the weather). The stairs can only be erected once the first floor is in place. The bricklayers can continue laying the first floor internal walls as soon as the ground floor walls are complete, but the roof joists and ceiling cannot be laid until all the external walls are complete.
Once again the internal walls and plastering cannot take place until the first floor is protected by the weather (i.e. The ceiling is in place) and of course the tiles cannot be laid until the roof joists are in place. 1.Draw a Gantt chart to show a plan of this project 2.Draw a PERT chart to show a plan of this project 3.Identify the critical path 4.How long do you estimate the project will take, assuming there are no glitches?
Activity Compare estimate with actual – George has allowed a total of 8 days to build the external walls. Imagine that the bricklayers can each lay 4 bricks per minute and that there are two bricklayers. They work for 8 hours a days and have a hod-carrier to keep them supplied with bricks. The house plans show that approx. 15,000 bricks will be needed to build it. Using these figures, how close was George to his original estimate?