Section 155 — Schedules for Construction Contracts

Description

155.01This work consists of scheduling, monitoring, and reporting the progress of construction activities.

155.02Definitions.

(a)Baseline construction schedule. The first approved construction schedule submitted after the preliminary work plan , showing the order to perform the work, and the dates for starting and completing the work. Once approved the baseline construction schedule cannot be changed.

(b)Construction schedule. Designated as either a Bar Chart Method (BCM) or a C ritical Path Method (CPM) schedule.

(1)BCM schedule. A BCM schedule includes a progress bar chart, written narrative, and a submittal list. A progress bar chart is a time -scaled graphic representation of a project displaying the overall sequencing of work. Each activity includes an activity number, description, start and finish date, and duration. BCM schedules list predecessor activities that must be finished before each activity can be started.

(2)CPM schedule. A CPM schedule includes a time -scaled logic diagram, tabular schedule, written narrative, and a submittal list. The time -scaled logic diagram is a computer- generated diagram showing the sequence in which the Contractor , in coordination with subcontractors, plans to perform the work; the interdependence of all activities and milestones; the work completed through the data date; and the remaining work necessary to complete the project.

(c)Construction schedule update. An update to the previously approved construction schedule that shows the completed work and the remaining work necessary to complete the project and includes progressing of the schedule, changes to the schedule logic, changes to the schedule activities, changes to the activity durations, or any other modification to the schedule of planned work. A construction schedule update may show construction being completed at a date other than the contract completion date.

(d)Critical path. The longest sequence of activities in the CPM schedule that determin es the project’s duration. If the duration of any activity on the critical path is changed, the time required to complete the project will change unless a separate CPM schedule adjustment is made .

(e)Preliminary work plan. A narrative and schedule diagram of contract activities for the first 60 days after the NTP.

Construction Requirements

155.03General. Follow the requirements of FAR Clause 52.236- 15 Schedules for Construction Contracts. 76 Designate an individual who will be the authorized representative responsible for the schedule. Submit the name of the authorized representative with the preliminary work plan. Failure to include elements of work in the schedule that are required for performance of the contract, even if approved by the Government, will not excuse the Contractor from completing the work required by the contract completion date. Approval of the construction schedule does not relieve the Contractor of the responsibility to schedule the work to meet the c ontract requirements. Do not suppress or sequester float. Do not alter planned durations and sequencing to give the appearance that activities do not have float. Float time within the construction schedule is not for use or benefit of either the Governmen t or the Contractor but is a jointly owned project resource available to both parties as needed to meet the contract completion date. Either party has the full use of float until it is depleted. In case of discrepancy , the approved electronic format governs over native file format of the construction schedule.

155.04Preliminary Work Plan. Do not start work, except mobilization, temporary traffic control, and Section 637 work, without an approved preliminary work plan. No progress payments will be made until a preliminary work plan has been approved. Include the following:

(a)A title page stating contract number, project number, project name, Contractor name, contract completion date, date of submittal, submittal number, and "Preliminary Work Plan";

(b)A schedule diagram showing work activities;

(c)Description of proposed work within each activity including the type and quantity of equipment, labor, and material to be used;

(d)Descri ption of site mobilization;

(e)Description of planned production rates for each applicable pay item by pay item quantities;

(f)Description of the number of workdays per week, holidays, number of shifts per workday, and number of hours per shift. Include all calendars used in the schedule module;

(g)Estimate of idle and partially idle periods within each activity, showing start and finish dates;

(h)Description of expected and critical delivery dates for equipment and material that can affect completion of the projec t. Describe the fabrication and delivery of key and long- lead time procurement activities;

(i)Name of vendor, supplier, or subcontractor to perform an activity. State assumptions made in scheduling their work; (j) A list of shop drawings, sample submittals, and r eview times; and

(k)A list of drawings, permits, and other submittals by pay item number required for the entire contract period. Submit a preliminary work plan at least 7 days before the preconstruction conference. Within 14 days of submission, the prelimina ry work plan will be approved or rejected. If rejected, submit a revised plan within 3 days.

155.05Baseline Construction Schedule. Submit a construction schedule within 45 days of the NTP. Include a title page or header block for each component with the contract number, project number, project name, Contractor name, contract completion date, date of submittal, and submittal number. Show all activities including those in the preliminary work plan. Prepare and submit a CPM construction schedule unless oth erwise specified.

(a)CPM schedule . Depict the order and interdependence of all activities and the sequence of the work that will be accomplished by the Contractor and subcontractors. Do not provide logic relationships between unrelated activities. Do not cons trict start or finish dates without rationale. Obtain approval before using lags or leads in the construction schedule. Remove lags or leads and replace with an activity identifying the lag or lead upon request.

(1)Time -scaled logic diagram.

(a)Show activity descriptions. Relate activities or groups of activities to pay items. Include activities for submittals, submittal reviews, fabrication, and deliveries. Do not include continuous activities (such as traffic control and QC).

(b)Show activity name or description with the activity bar on the diagram.

(c)Group activities by area (such as separate distinct bridges or roadways), and by type of work (such as submittals, utilities, roadway, or bridge).

(d)Show original and remaining durations for construction activities. Break construction activities into subtasks with activity durations no longer than 20 workdays. (e) Show original and remaining durations of non -construction activities (such as mobilization and submittals). Include pay item number, and the fabrication and delivery of key materials. Non-construction activities may have durations exceeding 20 workdays consistent with the contract. Indicate intended submittal dates and delivery dates for fabrication and delivery activities. Allow for review of each su bmittal.

(f)Start the construction schedule with the date of the NTP and conclude with a milestone that shows the contract completion date.

(g)Show early start and finish dates.

(h)Show late start and finish dates.

(i)Show total float and free float.

(j)Show relationship lines. Include at least one predecessor and one successor activity for each activity, except for the NTP and contract completion date. 78 (k) Use a time scale to graphically show the work scheduled for performance.

(l)Show the sequence and interdep endence of all activities.

(m)Identify the critical path.

(2)Tabular schedule. Submit a tabular schedule sorted by early start and total float. Include the following information in the tabular schedule:

(a)Activity number;

(b)Activity description;

(c)Subcontractor and supplier activity codes;

(d)Activity percent complete;

(e)Original and remaining duration;

(f)Early and late schedule dates;

(g)Total float;

(h)A predecessor/successor report; and

(i)Other tabular schedule report formats for analyzing CPM schedule revisions or time impacts, i f requested.

(3)Written narrative. Describe the rationale and assumptions used in the development of the construction schedule. Use the time- scaled logic diagram as the basis of schedule- related comments and reference specific activities by number and descrip tion. Ensure there are no conflicts between the diagram and the narrative. Include the following:

(a)Description of the planned critical path and the general sequence of work.

(b)Information and references to adequately define the scope of work by pay item included in each major activity type (such as roadway excavation and aggregate base course). Include station numbers and location.

(c)Description of the resource loading planned for use in the performance of the work for each major activity. Include manpower allocation by types of labor and crew size, types and number of equipment and special equipment, material, and subcontractors.

(d)Description of the basis (including the resource loading above) for the calculation of the duration for major activities, to be stated as quantity production rates.

(e)Description of workdays per week, number of shifts per workday, and number of hours per shift.

(f)A description of the assumptions used in converting workdays to calendar dates. Include anticipated holidays, non- workdays, winter shutdowns, and other constraints within the contract. Describe calendars used in the schedule module and list the calendar used for each activity in the schedule module.

(g)Name of the subcontractor or supplier performing an activity and identify their activ ity codes used on the schedule diagram. State assumptions made in the scheduling of the subcontractor’s or supplier’s work.

(h)Description of site mobilization and critical delivery dates for equipment and material that can affect completion of the project.

(i)A description of organizational limitations (such as resource constraints or subcontractor commitments) which limit scheduling flexibility.

(j)Estimate of idle and partially idle periods within each activity, showing start and finish dates.

(k)A list and descrip tion of constraints used in the CPM scheduling software.

(4)Submittal list. Provide a submittal list according to Subsection 155.05(b)(3) .

(b)BCM schedule . Include the following:

(1)Progress bar chart.

(a)Use a time scale to graphically show the percentage of work scheduled for completion during the contract time;

(b)Define and relate activities to the pay items;

(c)Show activities in the order the work will be performed, including submittals, submittal reviews, fabrication, and delivery; (d) Highlight activities that are controlling factors in the completion of the work;

(e)Show the time needed to perform each activity and its relationship in time to other activities;

(f)Show the total time to complete work; and

(g)Provide enough space for each activity to allow two additional plots parallel to the original time span plot. Use one space for revision of the planned time span, and one for showing actual time span achieved.

(2)Written narrative.

(a)Estimate start and finish dates of each activity;

(b)Describ e work to be done within each activity including the type and quantity of equipment, labor, and material to be used;

(c)Describe the location on the project where each activity occurs; 80 (d) Describe planned production rates for each applicable pay item by pay item quantities;

(e)Describe the number of workdays per week, holidays, number of shifts per workday, and number of hours per shift. Include all calendars used in the schedule;

(f)Estimate of idle and partially idle periods within each activity, showing start and fi nish dates ;

(g)Describe expected and critical delivery dates for equipment or material that can affect completion of the project. Describe the fabrication and delivery of key and long- lead time procurement activities;

(h)Identify the vendor, supplier, or subcont ractor to perform the activity. State assumptions made in the scheduling their work; and (i) Describe critical completion dates for maintaining the construction schedule.

(3)Submittal list. Submit a list of drawings and other submittals by pay item number require d for the entire contract period. Include the following information for each drawing or submittal:

(a)Pay item number and description;

(b)Planned date of initial submittal; and

(c)Planned date of CO’s initial response. Submit the construction schedule according to Subsection 104.04. Within 14 days of submission, the construction schedule will be approved or rejected. If rejected, submit a corrected schedule within 7 days. If rejected again, schedule a meeting within 3 days to discuss corrections and submit another construction schedule. If a construction schedule is not received within 45 days after the NTP is issued, the CO will withhold the progress payment according to Subsection 109.08(h) until the construction schedule is received. The approved construction schedule with supporting documents becomes the baseline construction schedule.

155.06Construction Schedule Update. Submit a construction schedule update by the 15th day of each month, or on the date established by the CO. Subm it the construction schedule update according to Subsection 104.04. Do not make changes to the schedule logic, activities, or critical path without prior approval. Within 7 days of submission, the construction schedule update will be approved or rejected. If rejected, submit a corrected construction schedule within 7 days. If rejected again, schedule a meeting within 3 days to discuss corrections and submit another construction schedule. If an acceptable construction sched ule update is not received by the 15th day of the month, or on the date established by the CO, the CO will withhold 10 percent of each progress payment according to Subsection 109.08(h)(3) , until a construction schedule update is approved. Failure to receive approval of a prior construction schedule update does not relieve the Contractor of the responsibility to meet the requirement to provide construction schedule updates each month. Submitting a proposed construction schedule update is not considered a notification of delay or of other basis for change. Continue to submit monthly construction schedule updates until a construction schedule update is approved. Approval of a construction schedule update showing completion past the fixed completion date will not alter the fixed completion date or affect the Government's rights under the contract.

(a)Update summary . Provide a summary of the changes and progressing made to the construction schedule since the last approved construction schedule update.

(b)Written narrative. Submit an update of the written narrative identifying adjustments made to each operation since the last update. Include the following:

(1)Equipment added or removed from the project;

(2)Changes to labor (such as added crews or subcontractors);

(3)Work shift adjustments (such as extended hours or added shifts);

(4)Changes to anticipated periods of suspension or holiday;

(5)Changes in material delivery;

(6)Early completion of individual work items;

(7)Efficiency of operations ;

(8)Changes to the critical path and logic revisions;

(9)Delays and disruptions that are ongoing as of the date of the proposed construction schedule update. If delays or disruptions have occurred, propose efforts to return the project to a schedule consistent with the contract requirements including the commitment of additional resources or other appropriate action ; and

(10)Notification that c ompletion date or other contract requirements will not be met, if applicable .

(c)Submittal list. Provide an update to the submittal list. Include the following:

(1)Actual dates for submittals;

(2)Proposed dates for anticipated submittals;

(3)CO’s responses (approved, rejected, or approved as noted); and

(4)Comments. 82 (d) CPM schedule u pdates.

(1)Tabular schedule. Update the tabular schedule. Include the following:

(a)Actual start and finish dates for completed activities;

(b)Remaining duration required to complete each activity started, or scheduled to start, but not completed;

(c)Float remaining for each activity;

(d)Percentages for completed and partially completed activities;

(e)Additional tabular schedules using different sort parameters if requested ; and

(f)Revised construction activities affected by impacts addressed with a time impact ana lysis. Include a revised completion date for the total work.

(2)Updated time -scaled logic diagram. Update the diagram and show the approved baseline construction schedule on the construction schedule update for comparison. Show the data date for the update.

(e)BCM schedule updates.

(1)Progress bar chart. Update the progress bar chart. Include the following:

(a)Actual start and planned finish dates of activities underway;

(b)Remaining duration of uncompleted activities;

(c)Actual finish dates of completed activities ;

(d)Revised construction activities affected by impacts addressed with a time impact analysis. Include a revised completion date for the total work ; and

(e)The initial time span plot adjacent to the updated time span plot for each work activity.

155.07Progress Meetings. Schedule and facilitate a weekly progress meeting. Invite the CO, superintendent, QCM, and other personnel directly supervising or managing the project. Provide a two- week look -ahead schedule one day before the meeting. Review actual progress as compared to the planned progress and review planned activities for the upcoming 2 weeks. Discuss the status of submittals, QC documentation, contract modifications, and requests for information.

155.08Acceptance. Construction schedules and supporting documents will be evaluated under Subsection 106.02.

Measurement

155.09Measure the Section 155 pay items listed in the bid schedule according to Subsection 109.02 .

Payment

155.10The accepted quantities will be paid at the contract price per unit of measurement for the Section 155 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05 . Progress payments for construction schedule by the lump su m will be paid as follows:

(a)25 percent of the pay item amount, no more than 0.5 percent of the original contract amount, will be paid after the baseline construction schedule is approved.

(b)The remaining portion of the pay item amount will be prorated based on the total work completed in the contract.