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مواصفات إعداد الجداول الزمنية.docx

Alzilal Engineering الخميس، 20 أكتوبر 2016 0 التعليقات






SCHEDULING REQUIREMENTS FOR CONTRACTORS

SCHEDULING REQUIREMENTS FOR CONTRACTORS 

General

The schedules (and schedule documents) described herein are for the following purposes:
1.    To define the contractor’s baseline plan (including logic and use of man-hours identified by discipline /Trade) for completing the works.
2.    To report actual progress against plan in completion of the works.
3.    To evaluate any changes to the contractor’s baseline plan and subsequent updated plans.
4.    To be used for agreeing the progress payment amounts to be paid to the contractor.
5.    To identify all the intermediate milestones that represents major deliverables by the contractor.
6.    To identify all interfaces with the other contractors.
7.    To identify the responsibilities of all parties in the schedule.
In addition, the schedule documents shall serve as a communication tool between PMO (Project management Office) & the contractor, consultant & contractor and the contractor & its sub-contractors. The contractor is encouraged to use the schedule to establish an understanding with all parties of the assumptions regarding the works, and the various constraints and opportunities that are possible within the plan. As the works progress, the contractor and the PMO will use the schedule to assess impacts and to formulate the best methods to complete the works on, or ahead of the contractual completion dates. The schedule documents will also be used by the field Supervising Engineer in the evaluation of the contractor’s monthly progress payment requests.
The works shall be scheduled and performed pursuant to the provisions of the Contract including any specific dates for Contract completion milestones, phase completion and the like, or other requirements included in the contract agreement. The contractor is responsible for completion of all aspects of the works in accordance with the contract agreement.
At anytime throughout the course of the works, the PMO reserves the right to require additional activities to be added to the schedule to clearly define the contractor’s plan and intentions regarding the execution of the works. In each instance, such activities or changes shall be made by the contractor at no cost or delay to the Employer.
The services provided by the PMO, the existence of schedules, networks or any other charts or services prepared or performed by the PMO, shall in no way relieve the contractor of the responsibility for complying with all of the requirements of the contract agreement works, including, but not limited to, the responsibility for completing works within the period for completion of the works and the responsibility of planning, scheduling, and coordinating the works. The contractor is required to comply with all schedule procedures specified herein and with any reasonable procedure changes that may be necessary, in the opinion of the PMO, during the contract agreement duration.
The contractor shall obtain sufficient software licenses of latest commercially available version of Primavera Project Management Tool for its own use. The Contractor shall purchase, supply and maintain Two licenses of the latest commercially available version of Primavera Project Management Tool for the use of the Employer.

1.   sCHEDULES & SCHEDULE DOCUMENTS

The following outlines the schedules and schedule documents required to be submitted by the contractor, with each type. Submittal details for each schedule are provided in Submittal Requirements.

1.1 Preliminary Schedule

The preliminary schedule shall be a schedule showing all activities and deliverables occurring in the initial period of the contract and shall be resource-loaded. This schedule shall be used for progress monitoring while the Baseline Schedule for the entire contract is developed. The schedule should fully detail the first 120 days of the Program and the balance of the works at a summary level.
In general no individual activity should have duration greater than 18 working days, where the contractor believes an activity need to exceed this limit it should be noted along with a rationale in the accompanying narrative.

Narrative

A narrative shall accompany the preliminary schedule that describes the key aspects of the submitted schedules. The narrative shall describe what is to be delivered by the contractor at each of the agreed interim milestone dates. The preliminary schedule narrative shall define the primary aspects of the contractor’s plan for conducting the works including, but not limited to:
1.    The layout and logic used in the schedule.
2.    Critical submittals.
3.    The critical path.
4.    An overall float analysis.
5.    Any interface concerns (input by other parties to be identified).
6.    Productivity and other assumptions made to determine activity durations

1.2 Critical Path

In addition to preparing the preliminary schedule according to the above requirements, the schedule shall also be sorted by critical path and presented as such. This is a time-scaled Gantt chart showing only the current critical path of the works (activities with total float of less than one day)
In the event of near critical path work (less than 10 days of float), the PMO may request the near critical path items also be shown.

1.3 Baseline Schedule

The Baseline Schedule is a detailed schedule that includes a narrative, cost and man-loading curves developed using the critical path method (CPM). In general no individual activity should have duration greater than 18 working days, where the contractor believes an activity need to exceed this limit it should be noted along with a rationale in the accompanying narrative.
This Schedule represents the contractor’s plan for the works from the date of award. The baseline schedule shall be used to make the first progress schedule. Once the baseline schedule is accepted by the PMO, it is to be frozen and shall not be revised without the PMO’s consent.

Work Breakdown Structure (WBS)

The contractor shall propose, prior to the submission of the Baseline Schedule a Work Breakdown Structure (WBS) that integrates with the latest version of Agency WBS. This WBS shall be provided to contractor, by PMO upon award of construction contract, additional levels are to be added by contractor to enable a sensible breakdown into sub areas of work and of responsibility.
Each activity in the Baseline Schedule shall have a WBS encoded to it.

Activity Coding

In addition to and separate from the WBS coding, each activity shall be coded to show, as a minimum:
·         The Phase of work (design, procurement, construction, etc.)
·         The Party responsible for the work (contractor, subcontractor, Resident Engineer, External Agency etc.)

·         The physical location of the work (area, level etc.)

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