Planning Terms
Wiki PagePlanning Terms
Jan 29, 2009
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Schedule Variance
Wiki PageA parameter of [[Earned Value Analysis]]. The difference between the [[Budgeted Cost]] of work carried out and the budgeted cost of work planned. The difference between the planned performance and actual performance. The difference between identical ...
Feb 3, 2009
Contigous Piling
Wiki PagePrinciples of Construction Often known as "Colcrete" piling, which is a type of trade name. Usually replaced by diaphragm walling methods.Essentially typical bored piles, or down-the-hold bored piles, are constructed with a spacing such that each pil...
Feb 7, 2009
Activity ID
Wiki PageA unique code, usually alpha-numeric, that identifies each activity in a project programme or schedule.
Jan 29, 2009
Bar Chart
Wiki PageA graphical chart on which activities are represented as bars drawn against a common time scale. Typically a date scale is drawn across the top of the page and a list of activities down the left hand side of the page. Activity timing and durations ar...
Feb 3, 2009
Calendar
Wiki PageA list of the time intervals during which activities can be worked and / or resources used. Typical data includes working days/non-working days, start and finish times for work-shifts, weekends, holiday periods and extra workdays. Each activity and/o...
Feb 3, 2009
Constraint
Wiki PageRestrictions that affect the sequence or timing of an activity. These include predecessor dependencies but more often refer to Imposed Dates. An imposed date restriction on the start or finish of an activity that overrides logic relationships. Positi...
Jan 29, 2009
Delay & Disruption Protocol
Wiki PageDELAY AND DISRUPTION PROTOCOL INTRODUCTION The Protocol has been produced by a drafting sub-committee formed by a group of members of the Society of Construction Law. The Protocol is not intended to be a contract document. The information, recommenda...
Feb 5, 2009
Activity Duration
Wiki PageThe time period calculated or estimated to carry out an activity. Each activity is uniquely identified by an [[Activity ID]]
Feb 3, 2009
Critical Path Method
Wiki PageThe term Critical Path Method (CPM) refers to a specific technique of schedule Network Analysis that is used to determine the amount of flexibility that exists in regards to the scheduling of a particular and specific logical network path with the ne...
Feb 2, 2009
Free Float
Wiki PageThe period by which an activity, or group of activities, can be delayed, brought forward or extended without affecting any other tasks, or the Programme End Date. The amount of time that a noncritical activity can be delayed without affecting the com...
Feb 2, 2009
Total Float
Wiki PageTotal float is how many delays are allowed from the beginning of the project which will not interfere with the projected completion date. Anything can happen during the course of working on an extended task. Projects can be affected by adverse weathe...
Feb 2, 2009
Activity
Wiki Page活动是描述范围元素的程序，时间表或网络的元素。活动预计需要的时间长度称为[[活动持续时间]]。消耗时间和使用资源（例如人员，材料和设备）的项目范围元素。活动是程序中最小的工作单元，但取决于程序的层次结构或详细程度，可以分为更小或更详细的活动。也称为[[任务]]。所有活动都由唯一的[[活动ID]]定义。活动是一个或者一类角色团队的任务。
Feb 3, 2009
Earned Value Analysis
Wiki PageA technique that compares the budgeted project costs, actual project costs and value of the work achieved to determine, inter alia, the status of the project, the likely completion of the project and the out-turn cost of the project. Often also refer...
Feb 3, 2009
Arrow Diagram Method
Wiki PageA network diagramming technique in which activities are represented by arrows. The tail of the arrow represents the start and the head represents the finish of the activity (the length of the arrow does not represent the expected duration of the acti...
Feb 3, 2009
Precedence Diagram Method
Wiki PageA network diagramming technique in which activities are represented by boxes (or nodes). Activities are linked by precedence relationships to show the sequence in which the activities are to be performed. See also [[Arrow Diagram Method]].
Feb 3, 2009
Windows Analysis
Wiki PageA method of [[Delay Analysis]] that analyses the project in discrete 'windows' of time. The Status of the project and forecast Programme Completion Date is examined at the beginning of the time window and at the end of the time window. Any Variance (...
Feb 3, 2009
What-If Analysis
Wiki PageThe process of evaluation alternative strategies by changing the Sequence, Durations and [[Constraints]] on activities.
Feb 3, 2009
Work Breakdown Structure
Wiki PageA Hierarchy that results from breaking down or ordering the project so that the activities on any level are a subsection of the level of detail shown above. A hierarchical and logically oriented grouping of project elements (typically deliverable or ...
Feb 3, 2009
Variance
Wiki PageThe difference between planned and actual performance of an activity or a sequence of activities. Usually relating to differences between [[Planned Progress]], [[Planned Start]] or [[Planned Finish]] and [[Actual Progress]], [[Actual Start]] or [[Act...
Feb 3, 2009