# Construction Schedule

# Examples

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| **4R Examples**                                                       |
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| The significant restrictions imposed on this project are: No major    |
| ground disturbing activities from November 1 thru April 31 and all    |
| clearing must be performed during the non-nesting season which is     |
| August 1 to January 31. These restrictions will have the most impact  |
| on the construction contract time.                                    |
|                                                                       |
| The key activity driving the duration of construction is wall         |
| construction. It was assumed that there would be 2 wall crews         |
| working. This assumption was chosen to be conservative.               |
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| The biggest restriction imposed on this project is weather            |
| conditions. It is possible that this project may have to shut down    |
| due to snow from the beginning of November to the end of March. The   |
| key activity during construction will be wall construction. It is     |
| anticipated that this project will need three construction seasons to |
| complete the 1.5 mile section. The time to complete the project will  |
| be reduced with the length of the project actually being              |
| construction.                                                         |
|                                                                       |
| The current estimate for the construction schedule has the project    |
| starting on April 21, 2008 and ending on November 3, 2010. Please see |
| the attached CPM for more detailed information.                       |
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| The anticipated start of construction is May 13, 2005 and the         |
| completion date is September 30, 2005. No interim dates are           |
| necessary. The critical path method (CPM) was used to generate the    |
| schedule. The completion date can be extended by 15 days, if          |
| necessary. Completion of temperature critical work becomes an issue   |
| if construction occurs beyond October 30.                             |
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| **3R Examples**                                                       |
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| The anticipated start of construction is May 13, 2005 and the         |
| completion date is September 30, 2005. No interim dates are           |
| necessary. The critical path method (CPM) was used to generate the    |
| schedule. The completion date can be extended by 15 days, if          |
| necessary. Completion of temperature critical work becomes an issue   |
| if construction occurs beyond October 30.                             |
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| Due to the higher elevations and mountainous location of the project, |
| the construction season would be limited to May through October.      |
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| This construction package is planned for advertisement on January 15, |
| 2006. Subsequently, the bid opening and notice to proceed will be     |
| February 15^th^ and March 15^th^ respectively. Final completion of    |
| the project is expected by September 1, 2006.                         |
|                                                                       |
| Originally, the National Park Service goal was to have the            |
| construction completed by the Fourth of July weekend. This is         |
| generally one of the two biggest weekends for visitation at the park. |
| At 70% design a preliminary construction schedule using the critical  |
| path method (CPM) was put together to estimate if this goal could be  |
| accomplished. The opening of the local batch plants was and still is  |
| the critical path for paving and ultimately the completion of the     |
| project. The 70% schedule had NTP on January 1^st^ and paving         |
| operations beginning in mid-March. The parks' goal was reachable with |
| the project completion shown on May 19^th^.                           |
|                                                                       |
| Due to the shelving of the Halls Crossing project, the construction   |
| schedule had to be reviewed once again. The Glen Canyon NRA inquired  |
| if the project, or at least the paving operations, could be completed |
| before the Memorial Day Holiday weekend. In taking another look at    |
| the paving operations and long haul required for this remote site, it |
| was determined that paving operations would take significantly longer |
| than first estimated. Additionally, the first schedule done at 70%    |
| was overly optimistic when paving could begin. Even if the local      |
| batch plant opens early, daytime temperatures would not become warm   |
| enough until later in the year, especially with a possible 3-hour     |
| haul to the project site. Pulverization and paving is estimated to    |
| take 5 and 7 weeks respectively. Both the parks' goals of being       |
| completed by Memorial Day and Fourth of July weekend are not          |
| unattainable.                                                         |
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