关键路径是决定项目最小可能持续时间的活动顺序。当在[[网络图]中查看时），关键路径是到项目结束的最长路径。如果网络图仅包含完成至启动关系，则关键路径上任何活动的延迟都会延迟[[完成日期]]。如果它包含其他类型的关系（SS，FF，SF），这可能并不总是反映在项目管理软件中。 例如，考虑一个包含2个活动的网络：活动A具有10天的持续时间，并且具有与活动B的开始与开始关系的前驱20天。大多数PM软件将表明这两项活动都处于关键路径上，但该软件将允许A延迟10天而不延迟项目完成。事实上，由于软件算法在识别...
The overall project schedule, created by merging individual contract schedules (i.e., designer and construction contractors) and including relationships between activities that are performed and managed by different groups.
The most recent schedule, consisting of actual dates together with the project team’s forecast start and/or finish dates for each activity remaining.
A regularly scheduled status update of the current schedule, reflecting completed work and [[forecast completion]] dates for remaining efforts. See also [[Time Now]].
Defines how one [[activity]] is related to another. A relationship can be one of four types and may include a [[lag]] time: 1. [[Finish to start]] (FS) activity cannot start until another is finished. 2. [[Finish to finish]] (FF) activity cannot fini...
The project planning / controls team must review [[schedule status]] and identify [[trends]] regularly. Critical and near-critical activities must be monitored very closely, and any delays to these activities must be scrutinized to understand the cau...
Many tools are used to identify potential risks and problems related to the schedule. These include the following: Schedule review meetings Critical path analysis Near critical path analysis Float analysis Manpower curves Earned value schedule produc...
Elements relating to substructures / foundations...
Concrete And Remove (hrs/m3) DepthHandMachineSlabs - unreinforcedNe 50 mm2.351.96 50 - 100 mm3.152.46 100 - 200 mm3.753.94 200 - 300 mm4.125.55Slabs - reinforcedNe 50 mm4.713.92 50 - 100 mm5.524.32 100 - 200 mm5.884.71 200 - 300 mm6.129.09Walls - un...
Mini Pile Construction Small diameter piles quickly driven into position, with suitable concrete pile cap. Diameter Depth Hrs per pile m/hr depth 235 mm 35 m 40 hrs/no 0.87 m/hr
Pre-Drilling - Site Investigation Pre-boring will be carried out at each location to ascertain the target founding level. Rotary rig drilling operations incorporate the use of a steel core that is used when a core sample is required. Another type of...
Principles Of Construction Often known as "Benoto" piling, which is a type of trade name. Usually replaced by diaphragm walling methods. Essentially typical bored piles, or down-the hold type bored piles, are constructed with a spacing slightly smal...
Principles Of Construction This type of "pile wall" is typical employed in areas where headroom or proximity to buildings restricts the use of large diameter bored pile drilling rigs, or where the wall is to be located very close to an existing stru...
The 21 months duration for the 14km cable car project from the land available date is made up of the following activities:5 months lead time to the mast foundation contract before the cable car contractor can get access to the foundation for a 10 mon...
Cutting Holes in concrete by Hand (no/hr Hole depth (mm) --> 0-75 75-125 125-250 250-375 375-500 Ne 50 cm2 2.94 1.85 1.75 - - 50-100 cm2 2.22 1.39 1.32 - - 100-150 cm2 1.67 1.11 1.05 - - 250-500 cm2 1.28 0.88 0.83 - - Cutting Holes in con...