Q A_First_Set_09072016.docx
DOCX document 264 KB Posted
- Solicitation number
- BBG50-B-16-1073-00005
- Issued by
-
US Agency for Global Media
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Set one of Questions and Answers.
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Other files
| File | Type | Posted |
|---|---|---|
| Kuwait_Dipole_Antenna_Construction_Package_8242016.doc | DOC document | |
| Kuwait_Dipole_Antenna_Construction_Package_8242016.doc | DOC document | |
| Kuwait_Dipole_Antenna_Construction_Package_8242016.doc | DOC document | |
| Attachments_for_Kuwait_Antenna_Dipole.pdf | ||
| 1442_Kuwait_Antenna_Dipole.pdf |
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· What is the current condition of the mast sections if they have been laying in the open area for the past few years and what is the finishing requirement for the masts after installation i.e. painting etc.
| A: | The towers were painted with Aviation-grade Orange (#12197) and White (#17875) paint per US Federal Standard 595C. The work was completed in compliance with FAA Advisory Circular AC 70/7460-1K. The flange surfaces on tower sections to be bolted together, and the bottom surfaces of the tower bases were not painted. |
| Are the mast section connection hardware available or is this to be provided? | |
| A: | The Contractor shall provide all hardware to connect the tower sections together. The contractor shall provide Six 5/8” Bolts, and associated hardware, for each leg flange. |
| What is the fixing arrangement for the base of the mast to the central foundation and if it is to be a pin connection what size and grade of pin is needed? | |
| A: | The Base of the mast pivots on a pin. The pin will be a total of 7 inches long. One end of the pin will have a consistent diameter of 1-¼” for a length that is ¼-inch shorter than the thickness of the base plate. The diameter will then taper down to 1-inch over the remaining length of the pin. The pin will welded the centre of the base plate. |
Drawing S-501 details 4 (guy wire attachment) indicates a turnbuckle to be locate at the top of the mast is this correct?
A: As indicated in the parenthesis, this may be considered ‘typical’. However, the Contractor may propose ‘alternative material’ in accordance with Section C.13.
Are the Element Attachment Assemblies with the masts or the antenna systems or are these to be provided as part of the mast installation works.
| A: | The element attachment assemblies will be fabricated by the Kuwait Station using C-channel (C12x20.7) and 5/8” thick 6 x 11 inch plate steel in accordance with Detail 7 of Sheet S-501 in Appendix B. The fabrication and installation of these element assemblies is anticipated to be completed after tower installation. |
| The connections for the guy wires to the anchors and the mast note a “3 ½ “clevis with a 2” Ø pin” the standard shackles etc. that have a +3 ½ “clevis opening do not have pins larger than about 1.3” Ø are these OK as an alternative? | |
| A: | The Contractor may propose ‘alternative material’ in accordance with Section C.13. |
| What is provided for the tie down post arrangements, posts, anchors etc. or nothing? | |
| A: | See Detail 9 on Sheet S-501, Appendix B. |
| What are the guy wire reactions as shown on sheet S-001? The scanned details are not clear and what is the final tension required in the wire after installation? | |
| A: | At Guy Anchor point the vertical reaction force will be at least 17,506 lbs, and the horizontal force will be at least 11,608 lbs. |
| Please provide the complete list of material available with you. | |
| A: | Only the tower sections are provided to the Contractor. |
| Please provide the complete list of material that need to be provided by bidder. | |
| A: | All material required to erect the tower, including guy wires, insulators, hardware, baseplate, concrete, rebars, grounding, etc. |
| Please share if you have complete drawings of mast structures along with required Earthling details. | |
| A: | The original drawings for the mast structures will be provided along with the next modification to the solicitation. The grounding details are covered extensively in |
| Please confirm that the interface brackets that mount on the mast to connect the ends of the HF antenna units are included in the antenna supply (from antenna supplier). | |
| A: | These interface brackets will be fabricated by the Kuwait Transmitting Station machine shop. |
Can you please arrange site survey for our technician to observe the materials and location.
Kind Regards, image1.png image2.png image3.png
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