Question_97-115.pdf

97. Question: Note 1 on B3/ES501 says that this detail applies to all electrical ductbanks containing power systems less than 600V, but ES101 calls for some different types of ductbank at these conditions.

Please clarify which ductbank details on ES501 apply to each section of ductbank on ES101. REF:

B3/ES501

97. Answer: Note 1 on B3.ES501 shall be deleted. Ductbanks apply as defined in the keyed not on

ES101.

98. Question: The floor finish for Room 114 in the Finish Schedule (A-701) lists CS-1 & RF-1. Neither the plans nor the specs state what floor type is associated with "RF-1". Please advise. REF: A-701

98. Answer: Reference Specification 09 65 00 Part 2.1 for specification.

99. Question: Sheet A-421 seems to imply that only (2) mechanical platforms are required; one in Area B and the other in Areas C/D. Structural Sheet S-140 shows a third mechanical platform to be provided in Area A (S-141). 1) Please confirm the mechanical platform located in Area A is required. 2) If Area A mechanical mezzanine is required, what method shall be used to access the platform since there is no stair/ladder shown as with the other mechanical mezzanines? 3) If Area A mechanical platform is required, will the concrete floor receive an EF-1 epoxy floor finish as with the other mechanical mezzanines? REF: S-140, S-141, A-421

99. Answer:

1. The elevated concrete slab shown in area A is over the COMM room, and it not specifically a mechanical platform. It is just a concrete cap over the COMM room.

2. There is no equipment on top of the elevated concrete slab in area A, so no access is required.

3. The elevated concrete slab in area A is not required to have any epoxy floor finish.

100. Question: Reference drawings CS507 through CS510. The details for the barrier cable shown on these drawings do not appear to be a crash rated system per UFC 4-022-02, Section 6-2.9.2. If a K-12 crash rated system is required, will an existing cable fence system meeting DoS K-12 standard (or ASTM F2656-07 Standard Test Method for Vehicle Crash Testing of Perimeter Barriers) be acceptable? REF:

CS507-CS510

100. Answer: Delete reference to “Rated for K-12”. Construct cable barrier per the details on the drawings which are from pages UFC-710-714 of UFC 4-022-03.

101. Question: Reference drawings CS507 through CS510. If the barrier cable option is accepted, will the cantilever sliding gate have to meet the K-12 crash rating as well? The current details shown for this gate will not meet the K-12 standards. REF: CS507-CS510

101. Answer: Answer: Delete reference to “Rated for K-12”. Construct cable barrier per the details on the drawings which are from pages UFC-710-714 of UFC 4-022-03.

102. Question: On sheet I-104 are noted PPE Locker CFCI. Please provide a specification for the PPE Locker. REF: I-104

102. Answer: Reference A-717 and Specification 10 51 13 Part 2.1.1

103. Question: In order to design the antenna tower for Option 13, we need to know the weight of any equipment (antennas, cabling, etc.) that are going to be attached to the tower. Please advise. REF: Spec Section 27 10 00

103. Answer: Answer will be posted with next round of questions.

104. Question: The transformer and 3 - switch gears the contractor will provide according to our specifications. Switch Gear is same as Sectionalizer. The Switch Gears will be S&C Model #PMH-9 and Catalog #55152R4-E3K9NG. Is this correct? REF: Spec Section 26 13 01

104. Answer: Pad mounted switches and transformers will be sourced from City of Alcoa Electric. Coordinate exact equipment with the City of Alcoa Electric.

105. Question: The transformer will need to be 3 Phase, Pad mount, 13200Y/7620V Primary - 277/480V Secondary, w/current limiting fusing C014 65 Amp(1000 KVA) or C016 100 Amp (1500 KVA) Bayonet fuse in series w/125 Amp ELSP internal fuse (1000 KVA) or Bayonet fuse in series w/parallel w/ 100 Amp ELSP internal fuse, split taps , for CU; EMRCO BRAND. The plans list a 1000 KVA and 1500 KVA on different sheets. Please confirm with electrical designer about which transformer needs to be installed. REF: Spec Section 26 12 19.10

105. Answer: Provide 1500kVA transformer per sheet E-601.

106. Question: Note 3 shows 5” conduit for duct banks – should this be 4”? REF: ES101

106. Answer: 5” Conduit is correct for the medium voltage circuits.

107. Question: Keyed Notes 1&2 on the attached document says to coordinate the transformer and the switch with the local utility. Does contractor need to carry these items in our bid or will Alcoa Utility provide these? REF: ES101

107. Answer: The contractor will carry $125K in the bid for the Alcoa Utility work. This work will be included in the $125K.

108. Question: Keyed Note #3 states to provide 3-133% ERP 2/0 aluminum from the transformer to the switches. Does contractor need to carry these items in our bid or will Alcoa Utility supply the cable and the terminations as well? REF: ES101

108. Answer: The contractor will carry $125K in the bid for the Alcoa Utility work. This work will be included in the $125K.

109. Question: On sheet ES-102, the electrical duct bank ends at a square, what is this square indicate transformer, hand hole, etc? REF: ES102

109. Answer: Square indicated an existing medium voltage manhole.

110. Question: On sheet ES-101 note #8 says to reconnect to new pad mounted switch, where is this switch? It also appears to cross a road, can this be excavated or directional bored? REF: ES101

110. Answer: There will be a medium voltage cable connecting an existing service to the new location of the MSA. The contractor will break the medium voltage cable on the south side of the road and terminate the existing cable from the MSA to the new pad mounted switch.

111. Question: T-701 note #8 indicates backbone cabling is to be routed over the hangar bay. Is this cabling required to be in conduit, as it isn’t shown on the drawings? REF: T-701

111. Answer: Provide backbone cabling in 4” EMT conduit.

112. Question: Confirm height of fence... 7' or 8'? Drawing CS506 detail C4 shows 8 ft. tall fabric.

Detail A1 shows 7 ft. tall fabric. REF: CS506

112. Answer: Security Fence fabric to be 7ft with 1ft of 3 barb outrigger for total of 8ft.

113. Question: Should new fence be galvanized or black vinyl coated? Specification references vinyl coated fabric. Existing fence is galvanized. REF: 32 31 13.53

113. Answer: All new base fence shall be galvanized to match base standard.

114. Question: Please provide specifications for temporary fence.

114. Answer: Galvanized chain link matching spec requirements of 32 31 13.53 but only 6ft fabric with 1ft 3-barb outrigger.

115. Question: If a proposed subcontractor for this project is not a part of the “demonstrated experience” as part of Sub-factor 1, sub-element 1, are Exhibits B & D required for the submission? Or is an Exhibit B & D required for all subcontractors proposed as part of the General Contractors team on this project, regardless that they’re “experience” is not used in the technical proposal? Reference sections 2.2.2.2.1, 2.5.2.2.2 & 2.5.3.10.1 where Exhibits B & D are mentioned.

115. Answer: Also reference Question 66. To clarify, if you use a subcontractor for “demonstrated experience” you must also provide Exhibits B & D. If you do not use a subcontractor as part of your “demonstrated experience”, Exhibits B & D are not required.