RFI_0002MCI_20150827.pdf

REQUEST FOR INFORMATION / CLARIFICATION FORM

FOR CONTRACTOR USE ONLY

CONTRACT NO:

FA6675-15-R-0008

RFI NO: 0002 DATE (YYYYMMDD)

20150827

SUBJECT: B3341 HVAC DRAWING REFERENCE/ DETAIL:

HVAC SOW 3.1 & HVAC System Drawing

ATTACHMENT SENT UNDER SEPARATE

COVER(__)

RESPONSE NEEDED BY: ASAP

REQUEST:

3.1.2 States to install one (1) 5.0 Ton Heat Pump Outdoor Commercial Unit VRF multi split system, but the minimum cooling capacity requirement of 182,830 BTU/h contradicts the (1) 5.0 Ton specification. Please clarify if the contractor is to install the (1) 5.0 Ton or the 182,830 BTU/h minimum requirement (which would be approx. 15.24 Tons)

3.1.3 States to install (1) 1,800 cfm air handling unit but then states that the minimum cooling capacity shall be 72,000 BTU/h. Please clarify which of the two requirements the government is specifying. 1,800 CFM capacity which would be a 5 Ton Unit or the 72,000 BTU/h which would be 6 Ton Unit.

Question: When calculating the cooling capacity for the 1,500 s.f. Storage area, did the government take into the consideration the height of the ceiling (in this case the bottom of the roof, since there is no ceiling)?

PROPOSED SOLUTION (If applicable:

Based on the square footage of the storage area (1,500 s.f.), and the fact that the area is open to the bottom of the roof, we estimate the actual load on the building is closer to 8 Tons.

TO(Contracting Officer): 301 CONF/LGC

FROM (Contractor):

MCI

DATE (YYYYMMDD)

20150827

TYPE OR PRINT NAME AND TITLE

Frank Saenz, President

SIGNATURE:

Frank Saenz

FOR GOVERNMENT USE ONLY

FROM CONTRACTING

TO:(Base Civil Engineering): Charles Tehan (__) Robert Dudley(__)

For Evaluation and Action

DATE (YYYYMMDD) TYPE OR PRINT NAME AND TITLE SIGNATURE:

1191522202C Typewritten Text X

REQUEST FOR INFORMATION / CLARIFICATION FORM

RFI RESPONSE / CLARIFICATION (refer to page 2)

RFI RESPONSE / CLARIFICATION:-

Government to complete following sections:

TO:(AF Contractiing Office)

DATE (YYYYMMDD) TYPE OR PRINT NAME AND TITLE SIGNATURE:

TO:(Contractor)

CONTRACTOR REVIEW

After reviewing the Government response, does the contractor anticipate A change order will be required? YES NO There will be an increase in the cost of the project? YES NO

Reviewer:

*Contractor- return reviewed form to Contracting Officer. Should the review results in YES for either of the two questions, if any further action is required by the contractor (i.e. submission of change proporsal), they will be notified by the contracting office.

1191522202C Typewritten Text 20150828

1191522202C Typewritten Text Ron Pyles, GS-11

1101986434C Typewritten Text

1101986434C Typewritten Text

1101986434C Typewritten Text

1. Upgrade Heat Pump to a 8.5 Ton Outdoor Commercial Split System Unit rated at 102,000 BTU/h. The increased size of the heat pump shall require a concrete slab measuring 5'0"W x 9'0"L.

2. The correct air handler size for a 8.5 Ton system shall be rated at 3,200 Cubic Feet per Minute (CFM) with a Total Cooling Capacity of 102,000 BTU/h and a Sensible Cooling Capacity of 70,380 BTU/h

3. Due to the height of the ceiling, the size of the HVAC system shall be increased from 5.0 Tons/1,800 CFM to 8.5 Tons/3,200 CFM.

4. As stated in Answer No. 1, a 5'0"W x 9'0"L (45 SF) 4" concrete slab will have to be added to elevate the base of the upgraded heat pump/condenser unit. This concrete slab shall be rated at 4,000 psi with No. 4 rebar placed @ 12" CTRS.

1101986434C Typewritten Text 20150828

1101986434C Typewritten Text Charles D. Tehan, GS-11, USAFR Engineering Technician, 301 MSG/BCE

1376454971C Typewritten Text 20150828

1376454971C Typewritten Text Yvette Todtenhoefer, Contracting Officer