2016-03-22_RFI___4_CYBER_MILCON.pdf

RFI # 4

1) Section 26 32 15.00 10 – Diesel Generator Set

Page 12, 2.5.4.1 Refers to the fuel tank to be 24 hr runtime @ 100% load. Drawing E-402

Note #1 indicates a sub base tank. On page 38, 3.5 Onsite Inspection and Tests, 3.5.5, Safety

Run Test, W. references to a day tank. Please clarify this is a sub base fuel tank of 24 hour runtime @ 100% load and the 3.5.5.W. day tank verbiage shall be omitted.

Omit 3.5.5.W from 26 32 15.00 10.

2) Drawing E-601dated 6/22/15

Drawing shows a load bank connection cabinet, 1600amp, 3p, 4w, 480/277volt, NEMA 3R;

mechanical lugs. Found no written specifications for this load bank connection. Is this load bank connection box needing to meet UL Listing? Please provide specifications for this equipment.

Refer to E-401 for cabinet location. Provide cabinet similar to Eaton 1600A Roll Up

Generator Termination Box or approved equal.

3) REF:Drawing E-100A

Note 6 requires a conduit and cable run through the inside of ITN HQ Building # 2120.

Question: How far away is the switch room from the edge of the building perimeter outline where note 2 demark line ends at building?

Approximately 120 feet.

4) The “Pricing Schedule”in the Solicitation does not match the “Bidding Schedule” There are missing ABI and the numbering system is different. Do both bid forms get submitted ?

Please clarify.

Vendors are required to fill out the CLINs on pages 5 – 8 of the solicitation and Exhibit E only.

5) Referencing Drawing M-503, detail A3. The detail shows pumped condensate and filtered domestic water lines into the CRAC units. I don’t see any pumped condensate in either the M or

P series drawings. Furthermore, drawing P-101 shows ½” cold water down to the CRAC units.

o Is there any pumped condensate required? Design intent is gravity flow. If the condensate cannot gravity drain to the nearest floor drain then a pump will be required.

o If there is no pumped condensate will the CRAC units drain to the floor drains shown in the immediate area? Yes

Is the verbiage in the detail incorrect? Is the ½” cold water the only domestic water to be supplied to the CRAC units? Yes, filtered water is not required

6) Referencing drawing MS-101, is there any specification for the underground chilled water lines? I saw mention of copper type K but Perma-Pipe pre-insulated piping is the usual in this type of application. Perma-Pipe pre-insulated piping is acceptable for the underground chilled water lines.

- Plumbing Detail C1 and A4 show water and gas meters being compatible with EMCS. Is the mechanical contractor or EMCS contractor supposed to provide these meters? The mechanical subcontractor provides the meters and coordinates the interface with the controls contractor.

- Section 236410.1.2.SD-03 and SD-06 – Factory testing. Please confirm desired conditions to test the air cooled chiller at. AHRI Conditions.

- Does an allowance need to be carried for the owner to fly out for the test or will all costs to fly the owners representative out be handled outside of this contract? Please confirm if the sound test is required as this is not available at most AHRI testing sites. Sound test is required.

- Section 236410.2.5.10 – (Condenser coil coating) – Please confirm if condenser coil coatings are required.

Condenser coil coating is required.

7) Section 236410.2.5.10 – Condenser coils – Please confirm whether a Microchannel condenser coil would be acceptable in lieu of a fin and tube condenser coil design. Microchannel reduces the refrigerant charge in the unit, but does not allow for a pumpdown cycle per specification.

Microchannel coils are not acceptable in lieu of a fin and tube coil design.

8) Reference: Drawing C-120 and C-121

Please clarify if the gas line (approximately 1,250 lf) that is shown on drawings C-120 and C-

121 is included in this contract. If it is, please provide us a pipe size, type of materials and specification.

BG&E to provide and install gas line up to the meter. See notes 3/C-120 and 4/C-121.

9) M603 – Indoor Modular AHU schedule, remark 10 calls a return fan on AHU-2. There is no performance data shown to size this fan, nor does the ATC flow diagram on M803 reflect this requirement. Please confirm if the return fan is necessary on AHU-2

A return fan is not necessary on AHU-2.

10) Please advise if it’s possible to extend the construction period from 365 days to 480 days.

Period of performance will not be extended.

11) Please advise what is the anticipated award date? so we can account for the proper winter conditions.

Contract will be awarded when all requirements have been met. Vendor is to provide a schedule with a start day of 1 May per the solicitation for review purposes.

12) Please advise where detail A4/S505 is applicable, we couldn’t find any reference for such.

Bid as shown.

13) On Drawing E100; keynotes #4 & 5 states “CONTRACTOR SHALL PAY FOR ALL

UTILITY FEES ASSOCIATED WITH WORK PROVIDED BY BG&E. Also Key notes #8 &

12 state “CONTRACTOR SHALL BE RESPONSIBLE FOR ALL COST INCURRED FOR

BG&E TO PERFORM THIS WORK.” Please provide point of contact for BG&E to solicit their proposal for such costs or advise if such work is to be considered not in contract scope for the time being.

Contractor should disregard Keynotes #4 and #5 on Drawing E100. However, Contractor is responsible for coordinating with BGE and paying BGE, as applicable, for work to be performed per Keynotes #8 and #12 on Drawing E100.

14) On drawing M701, Keynotes #1 & 2 list details B2 & B3/M501; however the latter doesn’t have such details?

Keynote #1 & #2 should reference details C3 & C5.

15) Drawing M502 shows detail C5, please advise if this detail is applicable to the exterior mechanical yard only or is applicable to Mechanical room 138 also?

Detail C5 is applicable to the exterior mechanical yard. Interior piping shall be hung from the structure.

16) On Drawing MS101 general note #4 lists detail A2/M505, however there is no M505 on the plans set! Paragraph 3.1.1 of spec section 10 26 13 states “Mount guards on external corners of interior walls, partitions and columns as shown on drawings”, however drawings depicts no reference for such corner guards locations! Also, the section on 2.2.1 is stating “Corner guards shall extend from floor to ceiling” while drawing I601 is asking for 48”

AFF!

General note #4 should point to detail C5/M502. Mount guards on all external corners of interior walls, partitions and columns. Corner guards shall extend from floor to ceiling.

17) On Spec Sec 01 20 00.00 20, paragraph 1.2.4 require breaking TAB activities “in the

Schedule of Prices and in the Construction Progress Documentation”; does that include the project schedule?

Include TAB activities in the project schedule.

18) Paragraph 1.5 WORK RESCHEDULING on SECTION 01 11 00 states “Contractor shall allow for a maximum of 15% of the scheduled calendar days where construction activity is prohibitive.” Are we to carry 15% of duration where construction activities will not occur? Is this float?

This is not float. This is set aside for any potential issues where the Government must restrict work for any particular reason.

19) Section 01 50 00, page 10, 3.5.1 and 3.5.2 - an office 200sf in size with heat, power, telephone and toilet facilities is to be provided. Would an independent trailer without water and a portable toilet be adequate? Will Government carry insurance for this facility?

An independent trailer without water and a toilet will be adequate. The Contractor shall be responsible for insurance on the trailer provided the Government.

20) EVAPCO Dry Cooler (DC-1) Scheduled on Sheet M-601 is the basis of design. The solicitation is specifying the project to comply with Buy American Act, and while the EVAPCO

Headquarters is Located in MD the Dry Cooler is only made in Belgium. Belgium may be an approved country for the BAA, Also, on the schedule M-604 Mitsubishi Ductless Split Systems

(DSS-1,2-1) are specified as the basis of design, while they are made in JAPAN. Japan falls under the BAA. Please clarify on this matter and if the project falls under the BAA.

Yes this project falls under the Buy American Act.

21) Reference E-103 (Gen Note #4), E-104 (Gen Note #4) & E-403

E-103 (GN#4) and E-104 (GN#4) address the Server Room RAF and Electric Room #222 RAF and refers to E-403 for grounding requirements. E-103 (GN#4) states that grounding of ‘non-stringer’ type RAF is not required. Please confirm that grounding of the RAF (pedestals) is required only in the Server Room and Elect Room #222.

Refer to E-602.

22) Reference E-601

Why are there dashed lines surrounding the Power Distribution Unit (PDU-1)? Is this PDU to be part of an ABI?

It is to show that it is all one piece of equipment. PDU-1 is part of the base bid.

23) Reference E-601 & E-605

There are numerous conflicts between the Conduit & Conductor Schedule on E-601 and the

Feeder Size Schedule (for Mechanical Equipment) on E-605. Please advise which schedule should be used for feeder sizing.

AHU-2: 4#1/0 & 1#6G-2”C.

CH-1: 4-350 KCMIL & 1#4G – 3”C.

CH-2: 4-350 KCMIL & 1#4G – 3”C.

24) What is the preferred glass tint color? Solarbronze as listed on A-211 or gray as listed in

088100-5 2.2.2?

Glass tint color shall be gray.

25) Please confirm that the interior glass lite is to be 1/2" thick laminated and that it is to be heat strengthened. Both of these items are listed in 088100 but these projects usually require 1/4" thick laminated annealed.

Interior glass lite shall be ½” thick nominal.

26) Is the low-e coating to be Solarban 70XL as listed on A-211? Or is it to meet a .28 u-value as listed in 088100-52.2.2? Depending on the other responses, this low-e may not meet the specified u-value. If the exterior lite is to be tinted and tempered, wouldn't glass type G5 be the same as G1? Tempered/tinted outboard and laminated inboard?

The low-e coating shall meet .28 u-value as listed in the spec section 08 81 00. Glass types

G1 and G5 are the same.

27) Is GC Project Manager required to be part of full time on-site personnel?

Vendor shall provide all resources necessary to complete and manage the project in a professional manner. It is highly suggested that the GC assign a full time PM that is available on and off site as needed.

28) Is this project tax exempt? Would the awarded GC get tax exempt certificate?

This project does not fall under any tax exemptions. If any tax exemption certificates are required, the MD ANG has a state tax exemption certificate that can be provided. The MD

ANG is federally tax exempt.

29) In regards to the Overhead/Vertical Cable Tray within the MDF/Server room and

IDF/Network Closets. Who is responsible for providing/installation of the Cable Tray?

Cable Tray is specified in Division 26 specifications.

30) Fire Alarm Drawing FA-101, Note 2 calls for the contractor to “provide ultra sensitive smoke detection system in group service space 135. Coverage shall include below raised floor.

Refer to specification 28 31 77 for requirements”. Drawings and specifications were sent to the preparatory vender, Monaco Systems” for pricing. According to Monaco System pricing for the ultra sensitive smoke detection system could not be provided due to insufficient design. Please provide design criteria for the ultra sensitive smoke detection system.

See Section 28 31 77., Section 1.2 identifies the ultra-sensitive system as a system “similar to the VESDA LaserPLUS System.” Section 1.5 describes the system.

31) Please advise to the location of the OSP cable tie into the building.

See E-100 and E-100A.

32) Please advise of the distance of run in the duct back from the network location to the building.

See E-100A which is a scaled drawing. Original size is 22” x 34”.

33) PLEASE CONFIRM THAT THE ENTIRETY OF THE CATHODIC PROTECTION

SYSTEM WORK IS ONLY AS INDICATED ON DRAWINGS CP-101 AND CP-501AND IN

CONFORMANCE WITH CATHODIC PROTECTION SYSTEM SPECIFICATIONS.

Bid as shown.

34) PLEASE CONFIRM THE ACSESS FLOOR GROUNDING IS ONLY ON THE 1ST

FLOOR SERVER ROOM 135 AND 2ND FLOOR ELECTRIC ROOM 222 AS DETAILED ON

DRAWINDS E-403.

Refer to E-602.

35) Should there be an STC rating on door 135A?

Yes, Door 135A shall have an STC 50.