CONSTRUCTION STANDARD DOCUMENT

Transcription

1 CONSTRUCTION STANDARD DOCUMENT OVERALL CONSTRUCTION SCHEDULE REQUIREMENTS The Overall Schedule shall be prepared by the Contractor based on information from all subcontractors engaged on this project. The Overall Schedule shall show the sequence and interdependence of activities required for complete performance of all items of work. The Overall Schedule shall begin with the date the Owner issues the Notice to Proceed, conclude with the date of Final Completion of the Contract, and include all interface points between Contractors. Failure to submit the Contractor's schedule information will be considered cause for withholding of any partial payments otherwise due under the Contract in accordance with the GENERAL CONDITIONS. DETAILED NETWORK DIAGRAM GENERAL The Overall Schedule shall contain a time-scaled network diagram. The network diagram shall be in the Critical Path Method (CPM) format and shall show the description, duration in days, sequence and interdependence of activities required for complete performance of all items of work. The Critical Path Method (CPM) of schedule development and maintenance consists of a network diagram in either Precedence (PDM) or Arrow (ADM) and associated date calculations. Sufficient care shall be exercised to produce a legible and accurate diagram. The original schedules shall be drawn on 11-inch by 17-inch reproducible media. A computerized disk of schedule data compatible to Primavera Systems is an acceptable reproducible medium. Activities related to a specific physical area of the project shall be differentiated from corresponding tasks for other specific physical areas of the project. ACTIVITIES An activity is defined as a time and/or resource consuming element of work. The activities selected for inclusion in the Overall Schedules shall be discrete. All dependency relationships must be shown. When necessary, discrete activities shall be subdivided into smaller, discrete activities so that the dependency relationships may be shown. The level of detail shall be sufficiently fine to enable the Engineer to determine that the project has been adequately planned and to facilitate the determination of real progress as the work is prosecuted. Activity durations exclusive of those for "Submittal Preparation by the Contractor," "Review by the Engineer," and "Material Fabrication and Delivery," shall not be less than

2 one or more than 21 days, unless otherwise approved by the Engineer. Allowance for inclement weather shall be factored into each activity where appropriate. The schedules shall indicate the description, duration, sequence and interdependency of work activities. They shall include, but not be limited to, the following items, as appropriate to each Contract: 1. Mobilization and move in. 2. Install dewatering system(s). 3. Excavation, backfill, grading, paving, seeding, and similar earthwork and surface restoration. 4. Submittal preparation by the Contractor and review by the Engineer. See Section 01300, SUBMITTALS DURING CONSTRUCTION. 5. Order, manufacture, delivery, and installation of critical material and major equipment. 6. Concrete placement sequence. 7. Structural steel, miscellaneous steel, masonry, equipment installation, piping work. 8. Various demolition and related removals or relocations work. 9. Various mechanical and plumbing activities. 10. Various heating, ventilating and air conditioning activities. 11. Various electrical activities. 12. Construction of various facilities. 13. All other major construction activities. 14. Subcontractor's items of work, including Small, Minority, and Woman's Business participation. 15. Performance tests and supervisory service activities. 16. Delivery and installation of Owner supplied equipment and material. 17. All Contract stipulated milestone dates, substantial completion date, and final completion date.

3 18. Final cleanup. Any contingency within the schedule, i.e., a difference in time between the project's early completion and required Contract completion date and float in the Overall Schedule, will belong to the Project and not to any of the parties to the Contract. The Contractors shall not be permitted to sequester shared float through such strategies as extending duration estimates to consume available float time or extensive crew/resource sequencing, etc. Within 20 days after the Notice to Proceed, the Contractor shall submit the Overall Schedule to the Engineer for review and/or rejection as appropriate. If rejected the Overall Schedule must be resubmitted until the review comments are resolved. Whenever under any Contract Documents the Engineer is given the right of review or rejection of Contractor's schedules or changes thereto, such right is for the benefit and protection of the Engineer and the Owner, and not a benefit for or service to the Contractor. Comments made by the Engineer on the schedule, or lack of such comments, or rejection or non-rejection of the Contractor's schedule does not relieve the Contractor from compliance with requirements of the Contract Documents, nor do they create any responsibility or duty for scheduling owed from the Owner or the Engineer to the Contractor. This review, whether accompanied by comments, rejection, or neither, is only for general conformance with the schedule concept of the project and general compliance with the information given in the Contract Documents. One reproducible copy of the Overall Schedule Detailed Network Diagrams, shall be submitted to the Engineer. Detailed Network Diagrams, and subsequent updates of the schedules shall be signed by all subcontractors to signify their concurrence with the schedules. Failure to submit the Detailed Network Diagrams, or subsequent updates of the schedules shall be considered cause for withholding any partial payments otherwise due under the Contract, in accordance with the GENERAL CONDITIONS. The Engineer may conduct Project Meetings for the purpose of discussing and resolving matters concerning various elements of the work. In addition, the Engineer may conduct Progress Review Meetings for coordination of schedules. The frequency and information discussed during these meetings will be determined by the Engineer. The time and place for both meetings will be as directed by the Engineer. The Contractor's Authorized Representative and Superintendent shall attend all meetings. The Engineer will direct whether any subcontractors are required to attend, and the Contractor shall comply with these attendance requirements and shall also require, if necessary, his subcontractors to attend. Prior to the Progress Review Meeting, the Contractor shall obtain from his subcontractors and staff, the necessary information as required to reflect progress to date. An updated Schedule

4 containing the following information shall be available for review at the meeting. 1. For activities started and/or completed during the previous period: start and completion dates, and duration. 2. For activities begun but not yet completed: the percentage complete to date, the remaining duration of the work and the estimated completion date. 3. For activities not yet started: revised durations and the estimated start and completion dates as necessary. 4. For authorized Modification Orders: Add authorized Modification Orders and revised durations where required. Update status information shall be annotated on the Contractor's Overall Schedule in a manner that the Detailed Network Diagrams shall depict the current status of the work. The monthly submittal to the Engineer shall be accompanied by a Narrative Report. Both the monthly schedule submittal and Narrative Report shall be required until Substantial Completion has been issued by the Engineer. The Narrative Report shall include the information described in the Contractor's Schedule Narrative Report Outline bound at the end of this Section. If at any time during the project, the Contractor fails to complete any activity by its latest scheduled completion date, he shall, within 7 days, submit to the Engineer a written statement as to how and when he will reorganize his work force to return to the Overall Schedule. Once the Contractor starts on any part of the work which affects public convenience, health, or safety, he shall diligently and expeditiously prosecute such work until it is no longer in any respect a public inconvenience, health or safety hazard. Whenever it becomes apparent from the current monthly progress evaluation and updated schedule data that any milestone interface completion dates and/or contract completion dates will not be met, the Contractor shall take some or all of the following actions: 1. Increase construction manpower in such quantities and crafts as shall substantially eliminate the backlog of work. 2. Increase the number of working hours per shift, shifts per work day, work days per week, or the amount of construction equipment, or any combination of the foregoing sufficient to substantially eliminate the backlog of work. 3. Reschedule work items to achieve concurrency of accomplishment. The addition of equipment or construction forces, increasing the working hours or any

5 other method, manner or procedure to return to the current Overall Schedule shall not be considered justification for a Change Order or treated as an acceleration order.