Soo Compressed Air Distribution System Q A 05232012.pdf

W911XK-12-R-0012 23 May 2012 FY12 Soo Compressed Air Distribution System

Questions and Answers as of 23 May 2012

Q1. I was wondering if it would be possible to have a set of drawings for the above mentioned job posted in either a pdf or tiff format on the FBO site? We do not have any software capable of reading cal files at this time.

A1. The CORPS does not provide a different format for the drawings. The software 'MaxView' required to view the plans has a free version to view drawings.

Q2. Will we be required to provide air to the MAC Lock at both ends and both sides of the lock during the winter shutdown period? How much air will be required?

A2. Answer will be forthcoming

Q3. It appears as though we will be required to maintain air at both gates at the POE Lock during the entire contract period, is this correct? Are these the only areas of the POE Lock that will require air? How much air will be required?

A3. Answer will be forthcoming

Q4. Does the USACE safety requirement require the contractor to consider the following areas as confined space, Mac crossover tunnels, Davis Building sub basement, Deep Tunnel.

A4. Answer will be forthcoming

Q5. Specification Section 22 15 14 3.2.1 requires hydrostatic testing of the air system, is this correct?

A5. Answer will be forthcoming

Q6. Has the contracting officer identified any products that will not be required to conform to FAR

52.225 Buy American Act?

A6. No products have been identified.

Q7. Drawing MP-110 indicates “compressed air slope to follow steam”, Specification Section 22 15 14 3.1.1 indicates that “horizontal piping shall have a grade of 1 inch per 100 feet”, which requirement is correct?

A7. Answer will be forthcoming

W911XK-12-R-0012 23 May 2012 FY12 Soo Compressed Air Distribution System

Q8. Excavation for the new tunnel, mezzanine, and foundations is adjacent to the lock monoliths – is there any concern over the stability of the monoliths and if so, will the Corp be responsible for any analysis that may be needed?

A8. Answer will be forthcoming

Q9. Section 01 35 13.10 page 7 Over water transport indicates that over water transport for excavation and concrete will be the Contractors responsibility – we assume that the Contractor will need to provide a tug and barge. Are there any time restrictions for using the Davis lock?

A9. Answer will be forthcoming

Q10. Specification section 22 15 14.00 40, page 6 indicates schedule 10 extruded aluminum, Alloy 356 T6 conforming to 6063 or 6061 ASTM B241 SMLS Pipe D, roll grooved for grooved fittings – we have contacted Victaulic (fitting manufacturer) and they do not recommend roll grooving of T6 aluminum pipe because it causes the pipe to crack – can T4 be used? If not, please provide a specification for pipe that can be roll grooved.

A10. Answer will be forthcoming

NOTE: An Amendment will be forthcoming to extend the due date for proposals.