140R2022B0002_Amendment_0006_0006.pdf

Truckee Canal – Canal Lining Sta 650+00 to 838+00 and Bango Check Modification Fernley Check

Replacement

Pre-Bid Questions and Answers

Question Set 2

1. Question: We are confused on the response to our previous question. The previous response to question 7 included in amendment 5 is listed below.

7. Question: After reviewing your project documents, we see that the basis of design for the

Geomembrane Composite is Huesker’s Canal3 12-30-12. We utilize IPG reinforced geomembranes to laminate a competitive/stronger product and would like to confirm your acceptance of our product prior to bid.

Reclamation Response: Use of comparable geomembrane composites, such as the IPG

VERSASHIELD 12/30/12, may be submitted for Reclamation’s review and approval. Fusion welded seams are required.

The response states that the VersaShield 12/30/12 may be submitted for Reclamation’s review and approval, but I submitted all of this data back on May 19th. What else do we need to do for review and approval prior to Bid? I have attached the original documents provided on May 19th for further review. I can overnight samples is required, please provide a name and address and I will ship them out today.

The response states that Fusion Welded seams are required. VersaShield 12/30/12 is made to be Fusion welded Geomembrane to Geomembrane for a leak free composite membrane. The specified product, Huesker’s Canal 3, can be fusion welded BUT it is only Geotextile to Geotextile and NOT Geomembrane to Geomembrane due to the way it is laminated.

Reclamation Response: Section 31 32 36, Part 1.03 lists required approval submittals for geomembrane composite. Based on the submitted information, we anticipate IPG Verashield

12/30/12 with fusion welded seems will be acceptable; however, approval of the proposed geomembrane composite will not be provided until after completing submittal requirements in accordance with the specifications.

2. Question: Our company has been fabricating radial gates for more than 40 years and meet section

35 23 50 Part 1.06 Qualifications requirements. We have designed gates based on the required

ETL1110-2-584 Design of Hydraulic Steel Structures and AISC Steel Construction Manual as listed in Section 35 22 46 Radial Gates. This includes gates supplied to the USACE. Section 35 23 50 Part

1.08.B Fabrication states ‘Details of design, fabrication, and assembly conform to AISC 360’. Please clarify if the applicable provisions require the fabrication shop to be AISC Certified. We can follow the fabrication requirements of AISC, but we are not an AISC Certified Fabrication Shop. It is our

Truckee Canal – Canal Lining Sta 650+00 to 838+00 and Bango Check Modification Fernley Check

Replacement

Pre-Bid Questions and Answers

Question Set 2

pg. 2 understanding there are no gate design and fabrication companies with AISC certification. We request the AISC certification to be waived.

Reclamation Response: AISC shop certification is not required.

3. Question: Specification Section 35 21 21, Bulkhead Gate, Part 2.03.C requires ‘Details of design and fabrication are per AISC-303. We have designed and supplied gates and stoplogs with a design basedon ETL 1110-2-584 and AISC. We can follow the fabrication requirements of AISC, but we are not an AISC Certified Fabrication Shop. It is our understanding there are no gate design and fabrication companies with AISC certification. We request the AISC certification to be waived.

Reclamation Response: AISC shop certification is not required.