Question_and_Answers_2.pdf
PDF 34 KB Posted
- Attached to
- Ferdinand Hassler Underwater Fasteners Federal contract opportunity
- Solicitation number
- EA-133M-15-RQ-0002
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Q and A 2
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Q_and_A_from_Vendor.pdf | ||
| SF30_Mod_2_RFQ.pdf | ||
| Buoyance_Appendages_2.pdf | ||
| Buoyance_Appendages.pdf | ||
| Amendment_Form_SF30.pdf | ||
| Diagram.pdf | ||
| Standard_Spec_000-3C.pdf | ||
| DOL.pdf | ||
| Attachment__B_-_Copy.pdf | ||
| Drawing.pdf | ||
| FH_FY15_Dive_Operations_to_Renew_Underwater_Fasteners_Spec_09-16-2014.pdf | ||
| FormSF1449_RFQ.pdf | ||
| Weights.xlsx | XLSX spreadsheet | |
| addt_information.pdf |
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Question and Answers
In Reply, more proposed answers for the question are as follows:
1. Question: Can you advise on why the installation of the new clamping bars as their is none currently?
Answer: NOAA’s engineering design agent incorporated clamping bars in order to increase the bolt torque values and to better distribute hydrodynamic loading across the fiberglass appendages.
2. Question 2a: Can a change in CFM material from stainless steel to aluminum be used?
Answer 2a: Stainless steel is required to minimize the effects of dissimilar metals in sea water.
Question 2b: Can you confirm reason for the use of stainless besides oxidation purposes and reason for heavy gauge material?
Answer 2b: Similar to Answer #1 above, NOAA’s engineering design agent incorporated stainless steel clamping bars in order to increase the bolt torque values and to better distribute hydrodynamic loading across the fiberglass appendages.
3. Question: SOW states holes to be drilled on newly installed CFM bars will need to be spaced evenly to accommodate existing bolt holes. This is said to be done on-site, however, if their is no concern for water ingress can spacing depicted on Drawing 6000695 Typical Buoyancy Appendage page 2 be used?
This is so new CFM bars can have holes installed within machine shop. Spacing is shown not to exceed 11.50in.
Answer: Drawing 6000695 Typical Buoyancy Appendage page 2 is a design effort drawn before installation. The bolt spacing may or may not be as drawn. NOAA is unable to guaranty the accuracy of The Columbia Groups’ drawings.
4. Question [is this a question or a statement?]: If the above is acceptable in regards to pre fabricating CFM Clamping Bar bolt holes can a slightly larger hole be installed within clamping bar so if during install bolt holes do not ALL align properly the larger hole will allow for fastener install. Larger flat washers can be used to compensate if needed.
Answer: GFM flat washers have an outside diameter of 1-1/16 inch in accordance with section 3.1.2( c). If the Contractor desires to install larger flat washers [larger than GFM], then the Contractor will be required to route a Condition Report requesting a material substitution subject to a negotiated firm fixed price contract modification after contract award. For Estimating Purposes, NOAA recommends using
GFM.
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