598-21-118 HVAC RFI Answers to Contractors 081222.pdf

598-21-118 B182 HVAC Replacement Contractor Solicitation RFIs (Request for Information)

1. Will the VA please clarify if they want new LED troffers in the existing Room 105, mail room? Yes, LED Lithonia Acuity GLT

2. Will the VA please clarify if the ceilings in rooms 111, 100, 101, 102, 103 are all getting new ACT and lights? Yes, LED Lithonia Acuity GLT

3. Will the VA please clarify if Room 105, mail room that is currently hard lid ceiling will transition to a drop-in ceiling with ACT? 2x2 Armstrong Cortega 770, 9’ Clg Ht

4. Currently in the mezzanine above Rm 105 there is security shield above the existing hard ceiling that is either screwed or tac welded to hat channel. The hat channel is supported by wire from the roofing bar joists. Are there safety or security considerations that will drive the requirement for this shield to stay? If so, how will it be integrated with an ACT drop ceiling? No security shield required.

5. Will the VA please clarify what type of ACT and grid and what type of LED troffer lighting (basis of design) they want the contractor to install in the mail room or any room that is transitioning from hard ceiling to ACT? 2x2 Armstrong Cortega 770, 9’ Clg Ht

6. What type of containment walls will the VA require if the contractor has to isolate areas in the pedestrian portions of the work areas? Level III required

7. Will the VA please annotate on the drawing, where in room 106 they want the new walls for the duct chase to intersect with the office wall and the building wall? Yes, revised drawing will be provided

8. Will the VA please clarify if the new door to the chase will be a 6’ – 0” x 7’ – 0” door frame with HM insulated door? Yes

9. Will the VA please clarify the hardware requirement for the door (lockset, closer, kickplate, etc..) ? Best lock lever action, flush bolts on secondary

10. Is there to be a ceiling in the new duct chase in room 106 or does the VA want the contractor to leave it open to the deck? Yes, ceiling is required

11. If the contractor is to leave the ceiling open, what type of fire suppression will be required in this small mechanical duct chase? Not required

12. What type of lighting will be required in the new duct chase? No lighting required

13. What if anything, will the VA want the contractor to do about the single 2 x 4 troffer that will likely interfere with the new chase walls? No lighting required

14. The contractor will need to lintel off the exterior brick in order to make an opening for the new duct to pass through the wall and into the building.

How does the VA want the contractor to reinforce that brick veneer wall to prevent it from collapsing?

JLM Chiller Plant upgrade project has a similar penetration that includes a design for securing that opening. Something similar to that would suffice.

Top plate – 3/8” steel, galvanized.

Top - angle iron, 6”x6”x 3/8” galvanized.

Side and bottom plate – ¼” steel plate, galvanized.

Bottom block filled with concrete and 5/8” wedge anchors set with Hilti-270.

Use 7/8” galvanized bolts, washers and nuts.

The corners need to be welded as well as the angle to the top plate.

The cover plates are galvanized 18-gauge steel.

15. How far away does the VA want the edge of the new housekeeping pad to sit off the existing building wall? 12” from the building

16. Currently there is landscaping roughly 3’ off the building exterior wall. How should the contractor modify this landscaping to meet the VA’s satisfaction? Disregard the landscaping, landscaping will be handled by a future contract.

17. Currently the condensate line drips into a hole very close to the building and that water is seeping below and possibly compromising the foundation or creating moisture and mold issues inside the building at that location. We recommend installing a French drain and moving that water away from the building. What if anything, does the VA want the contractor to do in order to get the condensate water away from the building envelope? Provide the condensate line draining towards the street and away from the building.

18. Does the VA have a current site utility plan for the underground utilities in that area? VA will provide site plan

19. If no underground utility site plan is available, will #811 call before you dig service be able to identify the underground utilities in that area prior to digging? VA will provide site plan

20. If 811 will not have a record of the utility plan, which party to the contract will be required to coordinate utility locating? VA will provide site plan

21. It would be helpful to the contractor if the VA would provide an electrical drawing showing the electrical requirements on this project. Will the VA provide that drawing? See No 23

22. Will the VA want an exterior disconnect installed on the exterior wall adjacent to the new unit? Yes, Provide a NEMA 3R 30A Fused Disconnect located by the unit

23. There is an electrical panel to the left of the room 106 entry doors. Is there enough space in that panel for the EC to drop a new breaker? What is that panel rated at? The Electrical Panel PP has a spare breaker rated for 30A/480V.

24. If this panel will not work for electrical support, will the VA please provide guidance on where they want the construction team to pull power from? The Electrical Panel PP has a spare breaker rated for 30A/480V.

25. Will the contractor need to account for a phasing plan for the new ceiling work and duct work above the ceiling or can the contractor anticipate receiving all of the area at one time?

Space will be available for work.

26. Will the VA be vacating the areas in rooms 105, 106, 111 when construction begins? Yes

27. Some of the VA equipment and furnishings will need to be moved around to support scissor lifts, scaffolding, or men and equipment working from underneath. Will the VA be responsible for moving this equipment or will that be the responsibility of the contractor? Yes, VA will move and/or cover the equipment during construction.

28. For support consideration, is the perimeter wall made up of CMU block with a brick veneer face only or is there another type of material between the block and brick? Only brick and CMU block walls

29. For lintel size and general construction considerations, does the VA know the depth of the brick pocket between the block and brick? 6” or 8” CMU block interior and 4” brick exterior

30. Are the HVAC controls in that building and the corresponding upstream controllers currently Siemens’s products? Yes, they are Siemen’s products and B-182 is connected to our BAS.

31. Will the VA please provide detail on the type of paint and number of coatings required on the exterior and interior walls of the new HVAC chase in room 106? Leave the interior walls mudded and floated. Engineering shop will be refurnishing the space later.

32. Will the VA please provide a BOD and specification for the new ceiling tiles, grid, and lighting? See #3

33. Is a full-time site superintendent required for the duration of this project? This is the judgement of the General Contractor not the VA call.

34. Please specify what areas of ceiling are to be replaced and provide a spec for the tiles.

Rooms, 102, 103, 105, 106, 106A, 111

35. Please provide Electrical drawings. See #23

36. Please provide a spec for the HVAC Controls. Will provide a cut sheet of the basis of design for the air handling unit.

37. Please provide an equipment schedule. See #36