Attachment 2 - Questions and Answers_0002.pdf

140D0420R0075 MIB Cobble Stone Repair Questions and Answers

1. In the Scope of Work document item B. Extent of work. Is it the intent to pull and reset the complete pattern of stones or just the areas damaged?

Damaged.

2. In some areas of stable stone work there is exposed tar showing in between and flush with the stones. Is there a waterproofing layer between the cement deck and the cobblestones?

Yes.

3. This would cause concerns as to removals of stable stone work. The question being, are we to remove any waterproofing membrane or tar that is on top of the concrete deck prior to reinstalling the stones in a cementitious mortar bed?

No.

4. Is water and electricity available ?

5. Are we to warranty the whole cobblestone system or just where we have restored the slab? One year typical?

The warranty should only apply to area that the contractor alters/repairs. The

Contractor’s warranty with respect to work repaired or replaced will run for 1 year from the date of repair or replacement IAW FAR Clause 52.246-21 -- Warranty of

Construction.

6. Are we to reapply any disturbed waterproofing upon stone and mortar removal? We see dislodged tar balls.

No.

7. Are we to restore the stone joints that have been previously mortared in incorrectly?

Yes, if cobblestones are needed the Government will provide.

8. In critical truck traffic areas can we work weekends to prolong the cement setting bed cure? Takes 30 days to gain full strength.

9. We see areas that have sunken, they are still intact, do we restore the proper grade?

These areas trap water.

140D0420R0075 MIB Cobble Stone Repair Questions and Answers

Yes. Please note there's a drain installed where the sunken area is located. If the drain has collapse upon removing the cobblestone immediately inform the COR or designee, do not attempt to repair. If the drain is intact, please recondition the cobblestone around the drain.

10. Is there storage in the loading dock area for minimum storage of cement and pans?

11. USG statement: Please ensure that the Technical Response includes details on how the cobblestones will be set to ensure stability as required in the SOW.