CM - Project Planning, work breakdown Flashcards
What is planning?
The process of breaking down a project into activities and establishing their mutual independencies.
What two things should a plan do?
-Represent the best thinking available at the time it is conceived.
-Should be dynamic, should change as knowledge progresses.
What is programming (scheduling) ?
Describes work to:
-Sequence
-Activity and duration
-Monitor, update and communicate the schedule.
What is a work breakdown structure?
Deciding what activities do we need to complete.
The process of dividing project work into smaller, more manageable components.
What are the 3 sections of work sequencing?
-Activity relationships (what sequence do we need to complete activites in)
-Activity duration
-Construction schedule
What are the main aims of a work breakdown structure?
-Identify work entailed in project.
-Provide a basis for planning timeline, resource use and cost of project.
-Monitoring during construction.
Work breakdown structure should be devloped “top down”, what does this mean?
It should start at a big picture perspective, and work down to fine-detail.
When should a work breakdown structure stop?
At a level where activities are clearly distinguishable, and have unique start and finish parameters.
In the contruction of a bridge, would abutment be WBS 1,2,3 or 4?
2
In the construction of a bridge, that has abutments 1 and 2, what WBS level would formwork be classed in?
Level 4.
In activity relationships, what does finish-to-start (FS) mean?
Activity x cannot start until activity y finishes.W
In activity relationships, what does start-to-start mean?
Activity x cannot start until activity x starts.
What is a precedence diagram?
A diagram where you connect related activities.
e.g. begin to A to B to C to end.
EXAMPLE : A long retaining dam wall is to be constructed, determine the construction sequence for the retaining wall, assuming that the wall has 2 components, a base and a wall.
WBS level 1 : Dam retaining wall
WBS level 2 : Base and wall
WBS level 3 : Base and wall split into excavation formwork, reinforcement ….
Then determine the steps taken.
What does concreting wait on?
Formwork and reinforcement to be in place, so it is finish start.
What is the duration of activities related to?
The rate at which work is completed
What is the production rate?
The quantitity of work produced per unit time, e.g. 10 metres cubed per hour.
What is the productivivity?
The duration of unit quantity of work, e.g. 0.1 hours per meter cubed.
What equation links productivity and production rate?
Production rate = 1 / productivity
How can activity duration be calculated?
From quantity of work / production rate * resources
How do we determine the productivity?
From SPON’s price book.
