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Question
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Date:
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10/17/2014 9:19:56 AM
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On August 22nd, a reply was provided to a question that addressed the type of backfill material to be used in utility trenches. The answer indicated that either approved borrow or select Type II material should be used to backfill the remainder of the trench above the Class I neatline. A subsequent question was asked and answered on October 7th that indicates that #25/26 material should be used for backfill to pavement subgrade. Can the department please clarify the types of backfill and limits of each for the different utilities on the project? Are all of these backfill types to be considered incidental to the price of the pipe?
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Answer
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Date:
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10/21/2014 2:42:22 PM
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In accordance with material note 1K on sheet 20(2B) and VDOT UB-1, backfill shall be No. 25 or 26 stone. The limit of the backfill is from the springline of the pipe to the pavement subgrade. The bedding shall be from 6” below the pipe to the springline of the pipe. This applies for all water and sewer pipe shown in the series 20 plans for the City of Portsmouth water and sewer mains. All bedding and backfill is included in the cost of the pipe in plan series 20.
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Question
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Date:
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10/16/2014 5:07:35 PM
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There are a number of questions posted for this project which haven't been answered.
Do you anticipate providing answers to these questions prior to 10/18/14? Is there a chance this project is going to get pushed to November?
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Answer
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Date:
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10/22/2014 8:04:01 AM
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no delay is expected
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Question
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Date:
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10/15/2014 6:33:52 PM
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The proposal specification states "for sections of pipe and drop inlets specified in table 1..." Table 1 is not provided with the special provision. Please provide table 1.
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Answer
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Date:
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10/16/2014 4:11:42 PM
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This table can now be viewed on the Construction Site under Announcements.
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Question
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Date:
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10/15/2014 2:28:38 PM
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What are the specifications for this device?
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Answer
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Date:
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10/16/2014 4:12:11 PM
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Specifications are shown in Provisions SECTION 512 – MAINTAINING TRAFFIC 5-3-13 (SPCN) Page 7
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Question
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Date:
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10/15/2014 1:21:41 PM
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On page 258 of the proposal, three pay items are indicated for management and disposal of contaminated groundwater. These pay items differentiate between the different means of disposal. The biditems in the contract (#2560-2580) divide the groundwater by scope (water, sewer and storm), but not by manner of disposal. Can biditems be added to allow for disposal and management based upon the Pay Items listed on page 258?
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Answer
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Date:
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10/20/2014 12:45:35 PM
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A chart with estimated quantities of contaminated soil has been uploaded to the website under Announcements. This chart is to be used for estimating purposes.
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Question
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Date:
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10/14/2014 11:35:32 AM
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There are 11 stormwater management structures called out under this item. Neither plans nor specification have any information on how to size these units. Units shown are proprietary devices supplied by one particular vendor.
For other vendors to propose under this item they will need to Drainage Areas to each structure, as well as the Runoff Coefficient for each drainage area. This information does not appear on plans or specifications.
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Answer
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Date:
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10/16/2014 4:12:54 PM
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Plan sheet 2F(4) indicates the required sizes of each proposed water quality inlet. There are multiple vendors who manufacture the type of water quality inlet (tree box stormwater filter) specified in the project special provisions (i.e. Filterra, Contech, etc.). The drainage inlet calculations could be provided by VDOT if requested, however this information would be released independently from the plans and specifications.
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Question
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Date:
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10/17/2014 8:22:41 AM
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Pland Sheet 2F(4) lists the exterior dimensions of the boxes made by one particular vendor only. Since sizing of these units depends on drainage areas and C factor calculations, or water quality volume calculations, the sizes shown on this sheet are irrelevant. Pleas provide the drainage area calculations, runoff coeffiecients and/or water quality volumes for each unit. Water quality structures work in different ways, and the exterior demensions of one particular vendor's units is irrelevant to the sizing of any other product. Please provide the information originally requested, or please direct the bidders to the appropriate contact in VDOT. Thank you in advance!
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Answer
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Date:
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10/22/2014 8:06:07 AM
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We've posted drainage calculations on the website, the size should be based on those calculations.
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Question
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Date:
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10/13/2014 2:44:18 PM
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If an alternative shoring system is used in lieu of temporary sheet piling, i.e. slide rail system, will VDOT provide compensation under pay item # 0130 temporary sheet piling, paid by the square foot?
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Answer
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Date:
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10/16/2014 4:13:48 PM
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Yes, if an alternative shoring system is approved by VDOT then compensation will be paid under line item #0130 temporary sheet piling and paid for by the square foot.
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Question
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Date:
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10/13/2014 3:25:39 PM
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Sheeting is shown on the plans at various locations and it's difficult to determine the exact limits. Can the limits of temporary sheet piling be clarified? What is the intent of the line item for temporary sheet piling? Is it only to be used to protect existing utilities or other property only in the areas indicated? Is the temporary sheet piling or shoring needed to install the box culvert, storm sewer, gravity sewer, force main and water to be considered incidental to the installation of the work and included in the L.F. price?
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Answer
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Date:
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10/16/2014 4:14:55 PM
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The location of temporary sheet piling depicted on the plans were developed to approximate the quantity of temporary sheeting necessary to construct the box culvert without encroaching outside of the limits of available area (i.e. property line, proposed right of way, easements, etc.). These limits are approximate and the plans will not be revised to show specific begin and end limits of the sheeting. The temporary sheet piling is a separate pay item and is not incidental to the installation of the box culvert.
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Question
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Date:
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10/13/2014 1:46:03 PM
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Plan sheet 16. The proposed ERT bridge will cross Turnpike Road between stations 329+00 and 331+00. Can VDOT provide plan and profile sheets for all work being performed by the ERT project at this crossing? Can the CPM schedule of the ERT project related to work crossing Turnpike Road be provided in order to anticipate the work zone conditions and the ERT MOT in place when the C35 construction has to be performed? Sheeting installation is required in this work zone, so the clearance limitation under the bridge is also be needed.
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Answer
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Date:
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10/16/2014 4:10:27 PM
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The plan and profile sheets can now be viewed on the Construction Site under Announcements.
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Question
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Date:
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10/13/2014 11:17:40 AM
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Sheet 1K(1B). Regarding the Temporary Traffic Control-Sequence of Construction, notes for Phase 4, Stage 2, P5, S1,S2 & S3 designate "working over the course of weekends only". Can any of the work within the Frederick Blvd. intersection be performed during the week at night? If so, designate work hour restrictions. What are the time restrictions for the weekend work? (i.e. Friday 9pm - Monday 5am or will there be time restrictions over the weekends)
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Answer
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Date:
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10/16/2014 4:16:18 PM
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The work elements/areas designated for 'weekend only' were identified as such to ensure that the contractor has sufficient time to complete the work and restore traffic. The work in question may be performed at other times if the contractor complies with the noise ordinance and other requirements detailed in the TMP.
The City noise ordinance and the temporary lane closure hours, listed on sheet 1K, govern work hours. The contractor is responsible for contacting the City to request an exception to the noise ordinance when it is required.
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Question
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Date:
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10/13/2014 10:31:28 AM
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Items # 40, #50 & #60 pertain to the disposal of "contaminated" soils, as related to the installation of drainage, sewer & water. On page 261 of the special provisions, the measurement and payment basis is "per ton", and is specified as 1- Disposal/Remediation of Petroleum-Contaminated Soil or 2- Disposal/Remediation of Lead-Contaminated Soil. In the descriptions of the locations of the contaminated soils, there are references to "lead contamination". How is the contractor to price the soil disposal if there are different types of contamination? Can additional pay items be added to cover the disposal of soils as either petroleum or lead contaminated?
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Answer
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Date:
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10/20/2014 12:08:39 PM
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A chart with estimated quantities of contaminated soil has been uploaded to the website under Announcements. This chart is to be used for estimating purposes.
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Question
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Date:
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10/21/2014 9:11:43 AM
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Can VDOT clarify how many tons of contaminated soils should be considered "hazardous", containing Lead > 5PPM for each of the three pay items? When using the Breakdown of the Types of Contaminated Soils chart provided by VDOT, should the contractor consider all of the Lead Contaminated soils as being over 5PPM?
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Answer
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Date:
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10/22/2014 8:03:34 AM
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The special provision requires the contractor to test the soil removed. The amount to be determined to be hazardous will be based on the test results.
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