Addendum__4.doc

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Repair Roof Bldg 805
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FA6633-17-Q0001
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Addendum #4

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ADDENDUM #4

FA6633-17-Q-0001

Questions & Responses #3 QJKL 07-0008 Repair Roof Bldg 805

1. QUESTION: 1- Detail 1 / A1-A3, 1 / A1-A3 and 1 / A1-A3 SIM in sheet A3, we recognized any construction within the parapet wall was not mentioned as (N.I.C). Please clarify if the following included to this contract:

a- C.M.U wall parapet.

b- 10" CMU Bonding Beam.

c- Extending the rigid insulation and exterior brick siding.

d- Using same Metal Cap Flashing on parapet or providing new.

2- Please advise if we shall apply ballast system on EPDM final layer.

RESPONSE: 1- Detail 1 / A1-A3, 1 / A1-A3 and 1 / A1-A3 SIM in sheet A3, we recognized any construction within the parapet wall was not mentioned as (N.I.C). Please clarify if the following included to this contract:

a- C.M.U wall parapet. Existing CMU wall parapet is not part of the contract. The only work performed is to attach a 3/8” thick plywood board to the parapet wall to adhere the PVC membrane.

b- 10" CMU Bonding Beam. 10" bonding beam are not part of the contract.

c- Extending the rigid insulation and exterior brick siding. No need to raise the exterior brick because base on the core sampling was made and it was found that the total depth was 6 inches on the flat or non-tapered portion of the roof. The Government estimate was using 3" of insulation from the drawings.

d- Using same Metal Cap Flashing on parapet or providing new. The coping replacement was included in the original Government estimate.

2- Please advise if we shall apply ballast system on EPDM final layer. This is a fully-adhered roofing system with white PVC membrane, therefore, no ballast required

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