B.08.03 - Bidder Inquiries Final.pdf
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- Attached to
- Tuttle Creek Riprap Repair
- Solicitation number
- W912DQ21B1005
About this file
This document contains bidder inquiries and responses regarding a federal solicitation for construction activities to repair riprap and remove debris from a dam. The solicitation number is W912DQ21B1005 and was issued by the U.S. Army Corps of Engineers Kansas City District for work at Tuttle Creek Lake in Kansas. Bidders raised questions about staging areas, construction details, elevation boundaries, woody debris removal specifications, temporary access roads, and survey requirements. The contracting agency provided responses clarifying the scope of work around these issues to support contractor bidding.
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4/15/2021 ProjNet: Logged In User https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont 1/4
Controlled Unclassified Information (CUI) Only
Bid Inquiry Contractor Report All Inquiries
Project: Tuttle Creek Upstream Rip Rap Repair Review: Tuttle Creek Rip Rap Bidder Inquiry (00001) (sorted by CommentID ) Displaying 14 inquiries.
Id Discipline Sheet Detail Spec 9143923 Civil CG101 Comment Classification: Controlled Unclassified Information (CUI)
On CG101, it shows a portion of the parking lot be dedicated as a staging area. During the site visit it was observed that in this staging area the asphalt is not in good shape & showing severe stress. What is the expectation of allowable damage to the asphalt parking lot in the staging area? If the parking lot is to be repaired, please provide a detail on the parking lot thickness and construction.
On: Mar 27 2021.
Government Response. . Replacement of staging area will not be required in this project. The parking area is intended to be used for the job trailer. Repair of the pavement may be necessary to bring the parking area to a usable condition with same type of material as present based upon the pre-construction survey. On: Apr 14 2021
Current Request Status: Request Closed Information for this report is procurement sensitive.
9143924 Civil CS501 Comment Classification: Controlled Unclassified Information (CUI)
On CS501 detail A1, the typical detail for the Rip Rap and Bedding repair, the bedding is shown turning vertical, due to constructability issues, can the bedding be placed at a slope? Please clarify.
On: Mar 27 2021.
Government Response. . Yes, bedding may be placed at a slope to facilitate construction. Minimum bedding thicknesses still apply. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143926 Civil CS101 Comment Classification: Controlled Unclassified Information (CUI)
On CS101 Keynote 1, it states, "Place Rip Rap and Bedding Overlay between elevations 1,122' to 1,136' per detail A1 on Sheet CS501." On CS501 A1, the typical detail shows Rip Rap and Bedding being placed outside of these elevations. Further as shown on CS301 A1, the cross-section shows Rip Rap and Bedding being placed from approx. elevation 1,112' to 1,136'. Please clarify the elevation boundaries.
On: Mar 27 2021.
Government Response. . Required overlay thickness goes between El. 1122 and 1136. Due to the thickness of the required overlay, riprap will be extended down below El. 1122 at a 2:1 slope and keyed in for stability. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143928 Civil CS101 Comment Classification: Controlled Unclassified Information (CUI)
On CS101 Keynote 2, it states, "Place Rip Rap and Bedding Overlay between elevations 1,122' to 1,136' per detail A1 on Sheet CS501." On CS501 A1, the typical detail shows Rip Rap and Bedding being placed outside of these elevations. Further as shown on CS302 A1, the cross-section shows Rip Rap and Bedding being placed from approx. elevation 1,112.4' to 1,136'.
Please clarify the elevation boundaries.
On: Mar 27 2021.
Government Response. . Required overlay thickness goes between El. 1122 and 1136. Due to the thickness of the required overlay, riprap will be extended down below El. 1122 at a 2:1 slope and keyed in for stability. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143930 Civil CS102 https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont&RequestTimeout=1000&pagStrRowSort=CommentID https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont&RequestTimeout=1000&pagStrRowSort=Discipline https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont&RequestTimeout=1000&pagStrRowSort=Sheet https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont&RequestTimeout=1000&pagStrRowSort=Detail https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont&RequestTimeout=1000&pagStrRowSort=SpecText https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont 2/4
Comment Classification: Controlled Unclassified Information (CUI)
On CS102 Keynote 1, it states, "Place Rip Rap and Bedding from elevations 1,122' to 1,136' per detail A1 on Sheet CS501." On CS501 A1, the typical detail shows Rip Rap and Bedding being placed outside of these elevations. Further as shown on CS304 A1, the cross-section shows Rip Rap and Bedding being placed from approx. elevation 1,110.3' to 1,136'. Please clarify the elevation boundaries.
On: Mar 27 2021.
Government Response. . Required overlay thickness goes between El. 1122 and 1136. Due to the thickness of the required overlay, riprap will be extended down below El. 1122 at a 2:1 slope and keyed in for stability. See Amendment 0001. On: Apr 14 2021
Current Request Status: Request Closed Information for this report is procurement sensitive.
9143932 Civil CS102 Comment Classification: Controlled Unclassified Information (CUI)
On CS102 Keynote 2, it states, "Place Rip Rap and Bedding from elevations 1,122' to 1,136' per detail A1 on Sheet CS501." On CS501 A1, the typical detail shows Rip Rap and Bedding being placed outside of these elevations. Further as shown on CS303 A1, the cross-section shows Rip Rap and Bedding being placed from approx. elevation 1,109.1' to 1,136'. Please clarify the elevation boundaries.
On: Mar 27 2021.
Government Response. . Required overlay thickness goes between El. 1122 and 1136. Due to the thickness of the required overlay, riprap will be extended down below El. 1122 at a 2:1 slope and keyed in for stability. See Amendment 0001. On: Apr 14 2021
Current Request Status: Request Closed Information for this report is procurement sensitive.
9143934 Civil CS102 Comment Classification: Controlled Unclassified Information (CUI)
On CS102 Keynote 2, it states, "Place Rip Rap and Bedding from elevations 1,122' to 1,136' per detail A1 on Sheet CS501." On CS501 A1, the typical detail shows Rip Rap and Bedding being placed outside of these elevations. Further as shown on CS302 A1, the cross-section shows Rip Rap and Bedding being placed from approx. elevation 1,112.4' to 1,136'. Please clarify the elevation boundaries.
On: Mar 27 2021.
Government Response. . Required overlay thickness goes between El. 1122 and 1136. Due to the thickness of the required overlay, riprap will be extended down below El. 1122 at a 2:1 slope and keyed in for stability. See Amendment 0001. On: Apr 14 2021
Current Request Status: Request Closed Information for this report is procurement sensitive.
9143936 Civil CS101 Comment Classification: Controlled Unclassified Information (CUI)
On CS101 Note 3, it states, "Gather Woody Debris as described in the keynotes and specification." The keynotes states, "All woody debris from elevation 1,100' to 1,159'. Dispose of in accordance with the specifications." Is there an allowable size limit on leaving woody debris in place? If so, what is the maximum allowable size of woody debris that can be left in place?
On: Mar 27 2021.
Government Response. . All woody debris with a diameter of 1.5 inches or greater must be removed. This will be included in Amendment 0001. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143937 Civil CS102 Comment Classification: Controlled Unclassified Information (CUI)
On CS102 Note 3, it states, "Gather Woody Debris as described in the keynotes and specification." The keynotes states, "Gather woody debris from elevation 1,100' to 1,159' and Dispose of in accordance with the specifications." Is there an allowable size limit on leaving woody debris in place? If so, what is the maximum allowable size of woody debris that can be left in place?
On: Mar 27 2021.
Government Response. . All woody debris with a diameter of 1.5 inches or greater must be removed. This will be https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont 3/4 included in Amendment 0001. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143939 Civil G-002 Comment Classification: Controlled Unclassified Information (CUI)
On G-002 Site Access Note 3, it states, "All access and haul road shall me maintained throughout use. Upon construction completion, access and haul road should be left in a condition equal to or better than the pre-existing conditions." Please confirm comments during the site visit that the site access road can be graded back at then end of the project to satisfy this note, without addition of new material.
On: Mar 27 2021.
Government Response. . The haul roads may be graded to meet the requirement as long as it is left in a condition equal to or better than pre-existing conditions. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143940 Civil G-002 Comment Classification: Controlled Unclassified Information (CUI)
On G-002 Temporary Access Road Note 1, it states, "Temporary Access Roads may be constructed within construction limits to access repairs." In regard to the temporary access ramps as construction per detail E8 on CS501, which will be used to access the slopes for dumping Rip Rap, Do these ramps need to be removed at the end of the project?
On: Mar 27 2021.
Government Response. . Temporary access ramps over the existing riprap do not need to be removed. Temporary access must be at least 12" thick as shown on CS501 to avoid damaging existing riprap. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143942 Civil 35 31 19 Comment Classification: Controlled Unclassified Information (CUI)
The specification 35 31 19 – 14 on paragraph 3.5.2.2 Check Survey, it states "At least one (1) check survey as specified below shall be made for each 25 foot section as shown as practicable after completion. Following placement of each type of material, the cross section of each step of the work shall be approved by the Contracting Officer before proceeding with the next step of the work. Approval of the cross sections shall be taken on lines feet apart, measured along the structure reference line, with readings at – foot intervals and at beaks long the lines." Please specify the cross section spacing in how many feet apart. Does construction need to stop for Contracting Officer approval after the placement of bedding or can the contractor place both the bedding and the rip rap prior to taking the cross-sections?
On: Mar 27 2021.
Government Response. . 25-ft spacings between cross-sections. Will need Contracting Officer approval of bedding placement prior to placing riprap. See Amendment 0001. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9143944 Civil 35 31 19 Comment Classification: Controlled Unclassified Information (CUI)
The specification 35 31 19 - 14 on paragraph 3.5.2.2 Check Survey, it states, "The elevation of the place stone surface will be determined by the use of a leveling instrument and a rod having a base 12" in diameter. If approved by the COR, other means may also be used." Please confirm that a construction survey drone maybe utilized to provide final survey data.
On: Mar 27 2021.
Government Response. . Assume using a leveling instrument and rod. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
9167302 Engineering Support 35 31 19 - Stone Protection Comment Classification: Controlled Unclassified Information (CUI)
According to paragraph 1.4.1, "The Tarkio limestone from one local quarry has been tested and approved for use in this contract." The local quarry identified is Bayer-Hayden. Are contractors to assume this quarry will furnish all rip rap required for this project?
https://www.projnet.org/projnet/binKornHome/index.cfm?strKornCob=BicPublicReportAll&strReportType=AllCont 4/4
On: Apr 07 2021.
Government Response. . Submit suitable stone samples and test results prior to delivery of any stone material to the worksite, from an approved source and location. See Amendment 0001. On: Apr 14 2021 Current Request Status: Request Closed
Information for this report is procurement sensitive.
Report Complete
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