24R1308 Note 4.pdf

Notice No. 4

15 April 2024

PRE-PROPOSAL QUESTIONS & ANSWERS

RFP N62742-24-R-1308

FY23 MCON P-923 AIRCRAFT PARKING APRON, FY25 MCON P-941 MAINTENANCE

SUPPORT FACILITY, AND FY25 MCON P-949 AIRCRAFT MAINTENANCE HANGAR,

ROYAL AUSTRALIAN AIR FORCE BASE, DARWIN, AUSTRALIA

NOTE: The following questions and answers are provided for INFORMATION ONLY. The RFP remains unchanged unless it is amended in writing on a Standard Form 30.

RESPONSES DEFERRED FROM NOTICE NO. 2 DATED 28 MARCH 2024

56. NAVFAC Drawing 17308954 (General notes C-002) - CF.1. MAKE ALLOWANCE

FOR ASSESSMENT OF UTILITY CAPACITY, CONNECTION TO EXISTING UTILITIES,

METERING AND ONGOING COSTS ASSOCIATED WITH UTILITY USAGE AT

MARKET RATES FOR THE DURATION OF THIS PROJECT. SEEK DETAILS AND

APPROVAL OF THE SITE MANAGEMENT PLAN RAAF BASE DARWN

STAKEHOLDERS. - Please provide details of the suitable connection points for potable water, sewer and Electricity available near the worksite? Please confirm the capacity of each that the Tenderer can rely upon to deliver the works? Please confirm market rates to be adopted for the supply of Water, Electricity and sewer?

ANSWER: Refer to specification 01 50 00 clause 3.3.2 for details on the services to be provided by the Government. The tenderers should refer to the tender drawings for the location of the existing services adjacent to the site of the works, and determine a suitable connection point.

Refer drawings CG101 and CG110 to CG123 for existing services.

RFP Document 00 70 00 and 00 73 00 will be revised in a forthcoming amendment.

70. Drawing C-002 P923 Aircraft Parking Apron. Note TA 1 to 3 on drawing C-002 details the construction of a temporary sealed access road. Please provide additional details for buildings or areas that the temporary road need to be connected to.

ANSWER: P923 Aircraft Parking Apron; Drawing C-002 Note TA 1 to 3 details the Temporary Access Road requirements to maintain access to the eastern extent of the base at all times.

Specification 01 14 00 Clause 1.2 requires the contractor to perform the works in a phased manner which includes the Site Access Road.

79. Specifications P941 Section 09 06 00 We note within Specification P-941 Section 09 06 00 - Architectural Finishes and Components Schedule (T-Sheet), the schedules do not nominate the products or manufacturers, only criteria. Can the client confirm that the tenderer/ Contractor is to determine a suitable product that meets the criteria? Our experience for Construct Only

DEPARTMENT OF THE NAVY

NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND, PACIFIC

258 MAKALAPA DRIVE, SUITE 100

JOINT BASE PEARL HARBOR HICKAM, HAWAII 96860-3134

Contract where the Designer has developed the design that specific manufacturers/products would be nominated. Please confirm?

Examples of schedules below that we would expect the 100% design would have the products/manufacturers specified?

ANSWER: Confirmed Contractor is to determine a suitable product that meets the criteria as per the performance requirements in the T-Sheets and drawings.

84. NAVFAC Drawing 1730129 (Dwg CP501) the notes mentioned - PROVIDE BITUMEN

EMULSION TACK COAT BEFORE PLACING ANY ASPHALT LAYER, INCLUDING

BETWEEN LAYERS. Can the designers nominate the spread rate to be applied?

ANSWER: Specification Section 32 12 13 'Bituminous Tack and Prime Coats' provides the requirements for the bitumen emulsion tack coat.

85. P949 drawing number CD201 Can P949 drawing number CD201 (Stormwater longsection) be reissue? The current version is illegible.

ANSWER: The issue was related to font embedding issue. Drawing CD201 was revised in Amendment No. 0001.

86. General - Can the full geotechnical report be released?

ANSWER: No, the full geotechnical report will not be provided.

87. General - After reviewing the mains and submains cable schedules for all the buildings it has been identified that there have been no earth cable sizes nominated. Will these cable sizes be made available to us, or are we to allow for the nominal earth size as per AS3000 depending the submain size?

ANSWER: Earth cable sizes are to comply with AS/NZS 3000. Where larger earth cable sizes are required they have been specified in the cable schedule.

88. Drawing AA111 – P50 Insulated Cool Room Panel. Please provide details of this panel as this code is not within the Architectural Finishes and Components Schedule.

ANSWER: Drawing AA111 P50 as indicated on the floor plan is not a commercial grade cool room panel wall system as the legend implies but a commercial; grade operable wall system.

Amendment forthcoming.

89. P949 -SB101 - Armory Building - Structural - Concrete Foundations & Slab Plan - Sheet 1 - ET2 is not found on Concrete Foundations and Slab Plan. Please advise location and amend drawings, if required.

ANSWER: ET2 not required within the Armory building. Amendment forthcoming.

90. P949 - SB101 - Armory Building - Structural - Concrete Foundations & Slab Plan - Sheet 1 - AW1 and AW2 were noted as in-situ concrete wall but with 320W corefilled comments.

Please confirm if it is 320d in-situ wall? If so, please amend drawings?

ANSWER: AW1 and AW2 walls are in-situ concrete not corefilled. Amendment forthcoming.

91. P949 - SB501 - Armory Building - Structural - Concrete Foundations and Slab Details - Sheet 1 - Please advise thickness of mass concrete blinding to EB1, IB1 and IB2. We have measured at 50mm throughout. Please advise otherwise and amend drawing if required?

ANSWER: Confirm, minimum 50mm concrete blinding. Refer to note F30 on drawing S-001 for P941 - Armory Building.

92. P949 - S-002 - Facility Wide - Structural - Notes - Sheet 2 and SB101 - Armory Building

- Structural - Concrete Foundations & Slab Plan - Sheet 1 - Please advise concrete grade for in-situ concrete walls AW1 and AW2.

ANSWER: Please use N40 for AW1, AW2 and ceiling slab. Amendment forthcoming.

93. P949 - SB503 - Armory Building - Structural - Concrete Wall and Masonry Details - No details shown for AW3 dowel spacing and fixing details. Please confirm 200mm cts spacing or otherwise? Please amend drawings as required.

ANSWER: Confirmed. Amendment to provide clarification forthcoming.

94. P949 - Structural drawings & notes S-001 - Can structural steel installation sequencing / methodology and temporary work plans please be provided if they have been developed? Given its construct only and fully documented drawings, we are unaware of any constraints or specific sequence that the buildings are required to be installed.

ANSWER: Response deferred.

95. P923 - Electrical Package - We note the HV and lighting schedules within the 05.01 drawing set does not provide any manufacturers details. Can the designer confirm the HV equipment manufacturer details and lighting manufacturer details that the design is based upon?

ANSWER: Response deferred.

96. P923 - Electrical Package - Can the client confirm who the existing PCMS contractor is for the site?

ANSWER: In accordance with the UFC requirements, product and manufacturers names have not been nominated in the documentation. The Contractor is to nominate products that comply with the performance requirements and specifications.

97. P923 - CG490 - Temporary Wash Facility Relocation and MOWP Stage 1A drawing (12583544-SK020) - Can NAVFAC confirm if there is any work restrictions to perform this work? Will NAVFAC provide key dates when this work can occur that won’t impact operations?

Is there any special inductions or working requirements to disconnect services and construct this new temporary facility?

ANSWER: With regards to Work Restrictions the Tenders should refer to Specification 01 14 00 for requirements.

The existing wash can be relocated between October and April.

Drawing CG490 notes the requirements for the disconnection of the services and new service connections.

99. P-923 E-605 drawing - Site wide drawings outlines the HV Site Wide condition once the works are completed. The Drawing E-605 notes that new operational ring is required between Sub Station ISS1 to 31-32-33-36-53-FF8-Sub 10 which has the same annotation as the new works to Substation A, B and C. Please confirm the HV Scope relates to the HV Schedule (E- 606 drawing) only and there is no works required outside the scope defined on the HV cable schedule?

ANSWER: The intention of Drawing E-605 is to show the update arrangement of the HV rings across RAAF Base Darwin. The scope of the project is to modify the rings as shown on drawing E-603 with the cables scheduled on E-606.

102. RFP Document 00 70 00, Section 1.68 - Would the Government consider allowing performance and payment bonds to be issued by project CLINs instead of 100% of the original total contract price? Thus, allowing performance and payment bonds to be issued on the base scope CLINs for P-923 at time of award and additional performance and payment bonds issued by project if/when option CLINs are exercised for P-941 and/or P-949.

ANSWER: Performance and Payment Bonds to be provided in accordance with FAR 52.228-15 Performance and Payment Bonds-Construction.

103. P941/P949 - Drawings AA621 - Fire doors FR5 and FR6 are nominated as 6 hour fire rating, however industry standard will warrant a maximum of 4 hour fire rating. Please advise if industry standard of 4 hours is acceptable?

ANSWER: 4 hours is acceptable. Amendment forthcoming.

104. P941/P949 - Drawings AA621 - All acoustic doors and fire doors are nominated with a 20 year warranty however industry standard for doors is 2 years. Please advise if 2 year warranty is acceptable?

ANSWER: Response deferred.

105. P941 Drawing MA106 - P-941 Maintenance Building GEF-A-10 (as below) notes ‘2 hours fire rated wrap up to roof’. Please confirm if this is for the ductwork riser only or the entire ductwork system?

ANSWER: The 2 hour fire wrap is in lieu of the fire damper that would be required at the penetration of the fire rated cover. Wrap is only required from the penetration to the roof.

106. Drawings 17310630 (M-603), 17310632 (M-605), 17310634 (M-607), and 17310635 (M-605): For P941 the UV lights/emitters are detailed on drawings 17310630 (M-603), 17310632 (M-605), 17310634 (M-607), and 17310635 (M-605), however, no requirements are detailed within the P949 drawing sets. Please confirm whether UV lights/emitters are required for FCUs/AHUs within P949, the same requirements as P941?

ANSWER: Provide UV lights/emitters per the same requirements of P941. In the case of P-949, installation of UV emitters limited to the DOAS units and the AHUs. The other equipment type with cooling coils, the FCUs, serve un-occupied data processing type rooms and are dry coils serving sensible loads only. Amendment forthcoming.

107. P949 - Drawings 17311336 (EA001), 17311355 (EA123) - P4 Light fitting has not been detailed on the lighting fixtures schedule on drawing EA001 however is nominated on drawing EA123. Please provide details of light fittings?

ANSWER: Response deferred.

108. Section 09 Architectural Finishes and Components Schedule Page 37/38 and Section 31 31 16.13 ‘Chemical Termite Control' For P941 and P949 - There appears to be a discrepancy between Section 09 Architectural Finishes and Components Schedule Page 37/38 and Section 31 31 16.13 ‘Chemical Termite Control' for termite management. Section 31 of the specification nominates ‘Soil Chemical application as well as Stainless Steel Mesh Barriers’ with no mention of a plastic TMB (Termite Moisture Barrier.), however, Section 09 Architectural Finishes and Components Schedule nominates plastic TMB.

It is our understanding that stainless steel mesh barriers are not approved for use in the Top End due to the Termite varieties present here including Masto Termes, so the option here would be soil chemical application. The specification requires a 5-year warranty which can’t be supplied on any soil chemical application in the Top End due to reduced chemical lifespans.

ANSWER: Response deferred.

109. Drawings 17310450 (A-701), 17310451 (A-702), 17311005 (A-701), 17311006 (A-702) For 941/P949 - In reference to signage type drawings 17310450 (A-701), 17310451 (A-702), 17311005 (A-701), 17311006 (A-702), there appears to be no reference to SG33, SG34, SG40 and SG55. These signage types are nominated within signage schedules on drawings 17311039 (AA146) and 1731052 (AB181). Please provide details?

ANSWER: SG33 is a code compliant life safety sign for FE01 fire extinguishers as per shown on plans. Refer to sign type elevation on AB181.

SG34 is a code compliant life safety sign for FE01 fire extinguishers as per shown on plans refer to sign type elevation on AB181.

SG40 High voltage warning.

SG55 not used.

Amendment is forthcoming.

110. Project specification- P941 Specifications-Final Package (Rev.20240216) - Section 23 05 93 Page 6 - 1.5.1.2 Qualifications - b. The specification nominates a TAB Specialist must be either a member of AABC, an experienced technician of the firm certified by the NEBB, or a supervisor certified by the TABB. However, NEBB/AABC/TABB are American standards and NEBB is no longer in Australia or supporting Australia. The Australian equivalent of NEBB is TACA. Please advise:

1. Please advise if the local Mech contractors can do all testing and commissioning in line with Australian AIRAH DA manuals?

ANSWER: Response deferred.

2. Please advise if Mech contractors must utilize TACA (Australian equivalent of NEBB) accredited commissioning agents from interstate?

ANSWER: Response deferred.

111. Drawing 17310647 (MA-112) & 17310628(M-161) - Drawing 17310647 (MA-112) nominates for a compressed air system in the building. However, Mechanical drawing - NAVFAC drawing number 17310628(M-161) does not provide the schedule for the Compressor in the compressed air system.

Could the designer, please provide the schedule for the Compressor (Compressed air flow requirements, any specific compressor technology, ISO 8573-1 air quality requirements, required pressure of the system) in the Maintenance Support Facility Building?

ANSWER: Clarification will be provided in forthcoming amendment.

112. P941 Specifications-Final Package (Rev.20240216)- Section 23 30 00 Page 31 - 3.13 Cleaning and Adjusting: The specification nominates to provide temporary filters prior to startup of all fans that are operated during construction and provide new filters after all construction dirt has been removed from the building.

1. Please specify which fans is this clause referring to; general exhaust fans, toilet exhaust fans, exhaust arm fans, outside air fans, FCU fans.

ANSWER: Any fan used during construction that has a filter (i.e. not exhaust fans) and supplies air into the spaces will require temp filters while in use.

2. Does the consultant have a schedule for these filters and media class?

ANSWER: Temp filters to match scheduled filters.

113. Drawing 17310638 (MA-103), 17310638 (MA-103) and 17310642 (MA-107) - The drawings show three Attenuators in the mechanical layout. However, the schedules for the Attenuators are not given.

Could the consultant please provide the schedules for the Attenuators?

ANSWER: Attenuators are specified in section 23 30 00 para 2.9.6.1 for P941. In the case of P- 949, Spec 23 30 00 Section 2.9.6 provides the insertion loss requirements for various length attenuators. Drawings MA104, MA 105, MA 114, and MA115 identifies the location of the various length attenuators.

114. Dwg - 1737355 (AA621), 17310500 (AA625), 17310544 (AB625), 17311097 (AA621), 17311098 (AA625) - All acoustic and fire-rated doors the acoustic rating and fire rating are different in the Door note and Door schedule. For example, Door leaf types FR4s in Door note as: Door schedule showing 038B door type FR3, acoustic rating RW35 and fire rating -/60/30.

Please clarify.

ANSWER: It is noted above the list of Leaf types in the AR and FR sections of the door notes that "THE PERFORMANCE SPECIFICATIONS BELOW REFLECT AVAILABLE

PRODUCTS. THE PERFORMANCES OF AVAILABLE PRODUCTS MAY EXCEED THE

MINIMUM REQUIREMENTS SET OUT IN THE DOOR SCHEDULE."

Each leaf type has to meet minimum Fire, Acoustic and Security requirements. In order to meet each, the leaf type often has to exceed minimums.

115. Specification section 08 11 13, Page 5, Part 2.1 - The metal clad is to be 1.2mm thick as per spec; the closest we can find is 1.15mm in Australia. Please confirm that this is acceptable?

If this is not acceptable, we need to increase it to 1.55mm.

ANSWER: Metal sheet thickness is typically to be 1.8mm BMT to meet minimum UFC requirement of 1.7mm. Amendment forthcoming.

116. General: For P941 and P949 - general query, please specify the security zoning plan for the following buildings:

• P-941_04_Maintenance Building

• P-949_04_Hangar

• P-949_05_Node Building

ANSWER: Refer to Security Physical Security Zone Plans Drawings:

Maintenance Building - BLDG-P941-1737355-RA103 and RA104 Hangar - BLDG-P949-1737356-RA103 and RA104 Node Building - BLDG-P949-1737356-RB103

117. Drawings - 17310492 (AA511), 17310807 (AA513), 17310508 (A751), and spec 'Section 09 (Architectural Finishes and Components Schedule) - The ceiling type CE50, with an FRL of 60/60/60 as per section drawings 17310492 (AA511) and 17310807 (AA513), specifies three layers of Fyrchek for the bottom side. However, this information conflicts with the details outlined in the finish schedule and the typical drawing 17310508 (A751). Please clarify?

ANSWER: Wall sections depict the correct assembly. Amendment forthcoming.

118. Drawing - 17310462 (AA126) - Wet area wall types are not shown in the wall set out plans. Please provide?

ANSWER: Refer dwg AA411 for wall dimension sizes and finishes and refer to AA503 & AA504 wall types.

119. Section 09 (Architectural Finishes and Components Schedule) - Finish schedules indicate a concealed ceiling suspension system for all Acoustic tile ceilings. Please advise whether a grid system can be utilized?

ANSWER: Yes ceiling tile systems can use a commercial grid system. Amendment forthcoming.

120. Drawing - AA126, AA311, AA513 - There is inconsistency in the wall height specifications, for example Secured Storage 026. The AA126 Wall set-out plan indicates measurement to the underside of the structure above, while AA513 specifies measurement to the underside of the ceiling. Additionally, AA311 indicates a height of 150mm above the ceiling.

Please clarify?

ANSWER: P11 is the wall lining on studs and it goes 150mm past the ceiling as the AA502 wall detail types take precedence the ceiling structure is to create a secure ceiling to the store room.

121. Drawing AA513 & 'Section 09 (Architectural Finishes and Components Schedule) - Ceiling type CE10 CE02, finish schedule indicates suspended system, Detail drawing on AA513 shows different system. Please clarify?

ANSWER: Due to the other higher level ceilings (fire/acoustic) above the CE10 ceilings they will require a ceiling joist system as indicated on the section the CE02 ceilings are a suspension system.

122. P941 - Drawing AB151 & AB322 -The RCP plan drawing No. AB151 indicates Ceiling type CE41, while Drawing No. AB322, Wall section 4, specifies ceiling type CE20. Please advise?

ANSWER: CE41 is the correct material of eaves linings/soffits.

123. Drawing - AA125, AA126, AA302 - Drawing No. AA502 Wall type P15 shows 8mm lining but did not specify the material. Please clarify?

ANSWER: P949 drawing AA502 includes the P15 wall type.

The 8mm layer which should be labelled as FC01 which is a wet area compressed fiber cement lining with a factory micro water repelling barrier coating (as noted in the T-Sheets, Architectural Finishes and Components Schedule included with Specification section 09 06 00).

Amendment forthcoming.

124. Drawing - AA125, AA126, AA302 - Wall type P34: wall set out plan indicates P34B is 150mm above ceiling level and AA302 section B shows full height. Please advise?

ANSWER: P34B wall should be full height as shown on AA302. Amendment forthcoming.

125. Drawings P941 and P949 – Please advise if the following Wet Area Hardware items are included within the Client FFE supply items:

1. AC01 SOAP DISPENSER 01 - 1L CHROME

2. AC05 BIN TYPE 02 - ACCESSIBLE

3. AC06 PAPER DISPENSER 01

4. AC11 MIRROR TYPE 02 - ACCESSIBLE

5. CB10 LOCKERS

6. FX13 GRAB RAIL - 90 DEGREES RH

7. FX14 GRAB RAIL - STRAIGHT 300mm

8. SN04 SANITARY FIXTURE 04 - BASIN ACCESSIBLE RHS

9. SN10 SANITARY FIXTURE 10 - TOILET ACCESSIBLE

10. TP10 TAPWARE 10 - SHOWER HEAD RAIL

ANSWER: No, these should be provided by the contractor in the tender price.

126. Drawing - AA111 - Grid C, 4/5 shows this wall as being P50 Insulated Cool Room Panel however structural drawings SA105 and associated section notes this as being an operable wall.

Please note there is no mention of an Operable Wall within the Door Schedule. Please clarify?

ANSWER: See response to RFI Question 88.

127. Drawing - AB322 - Insulation shown behind FC01 walling. Please provide details of what insulation this is (i.e. IN Reference). Please clarify?

ANSWER: On the enlarged plans the walls is called up as a P28 wall allow for INS05 INSULATION - 90mm BATTS R2.7 32KG.

128. Drawing AB324 - What is Insulation and wall lining required to wall section 10? Please clarify?

ANSWER: That insulation and lining has been deleted and the wall is only painted CMU to the fire sprinkler room. The insulation hatch should be removed from drawing. Amendment forthcoming.

129. Drawing AB101 - FX50 Utility shelf is shown but not in the T Specs. Please provide details of what this is. Please clarify?

ANSWER: FX50 is a 3 sided commercial boot scraper brush mounted to the concrete path not a shelf. Amendment forthcoming.

130. Drawing AB101 - FX50 Utility shelf is shown but not in the T Specs. Please advise if this is part of the FFE to be supplied by Client. If so we still need details to determine the installation requirements. Please advise?

ANSWER: FX50 is a 3-sided commercial boot scraper, not a shelf and is to be provided by the tender in pricing, not supplied by client.

131. Drawing AB101 - Vehicle Lift Pit is shown to grid C10. Please confirm that the supply and / or installation of the Vehicle Lift is excluded from this Contract. Please advise?

ANSWER: Not in contract.

132. Drawing AB101 - Please provide details for the Monocrane performance schedule (i.e.

load rating). Please advise?

ANSWER: Please refer to notes on drawing SA303 and Specification Section 41 22 23.19.

133. Drawing AB101 - Please advise if the Monocrane and Gantry Crane are within the Contract scope as they could be classed as Equipment within FFE which the Client is supplying.

Please confirm?

ANSWER: Confirmed monorail and underslung gantry crane are in the contract scope, noting the client (or client's representative) will require details of the proposed cranes for approval prior to procurement.

134. Drawing AB101 - Please provide details for the Gantry Crane performance schedule (i.e.

load rating). Please advise?

ANSWER: Please refer to notes on drawing SA303 and Specification Section 41 22 13.15.

135. P941 - 'Section 09 (Architectural Finishes and Components Schedule) - The Architectural finishes schedule nominates to "apply glazing film as noted on the design drawings", however it does not seem to be documented. Please advise?

ANSWER: Graphic film is covered on AA641 as SG81.

136. Drawing AA641 - SG81 has been nominated to window type WE03 however no details are provided. Please provide?

ANSWER: SG81 is commercial grade frosted office glazing film, typically located in the door side light windows in the offices.

137. P941 - 'Section 09 (Architectural Finishes and Components Schedule) - Please refer to the screenshot below from the LV01 Louvre schedule. and confirm whether all LV01 louvres are high-security louvres.

ANSWER: Yes, all Lv01 are high-security louvres.

138. Drawings - 17310507 (AA731) & 17311093 (AA526) - LV01—Two stages louvre are nominated as the same specification in both P941 and P949, however the section details indicate they differ. Please confirm?

ANSWER: They are 2 stage louvres but one is used for the emergency generator room, so it is a different style requiring more air flow. All louvres need to be rated to Darwin Cyclone region C.

139. Fire Services General Query - The below design defines the fundamental design for the fire suppression system in the hangar. The current Manual of Fire Protection Engineering stipulates that for Aircraft Hangars provided with a fire sprinkler system, the system shall be a closed head system with low level foam. The design included in the design drawings appears to replace the low level foam system with an Ignitable liquid drainage floor assembly (ILDFA).

This would be a design deviation from the MFPE as the proposed arrangement is not listed in that document.

Please confirm that the alternate firefighting strategy has been endorsed. Refer below extract from MFPE Edition 4.

ANSWER: The design and use of the ILDFA system has been discussed with and submitted for review and approval to DEEP as a dispensation to the requirements of the MFPE for a low-level foam system. DEEP have provided preliminary endorsement.

140. P941/P949 - 'Section 09 (Architectural Finishes and Components Schedule' - Please confirm if the RAL colors specified in the finishes schedule are mandatory or if the Contractor will be able to propose similar colors from proprietary ranges such as Dulux and Colorbond to utilize local products?

ANSWER: Confirmed, the RAL colours selected are based on local manufacturer’s colours.

141. P949 - AA151, AA171 - Please confirm if the ceiling to Room 024 and 025 are suspended ceiling of 60mm thick mineral board.

ANSWER: No, FIXED CEILING - FIRE RESISTANT FRL 240/240/240. Refer to T-Sheets it’s a joist system, using a propriety mineral board system.

142. P941 - Drawings AA131 & AA132 - PA50 'Concrete Wall Sealer' is shown on Architectural finishes drawings to be applied to Blockwork Walls which should be PA51 'Masonry Block Sealer'. Will assume PA51 in lieu of PA50 to all blockwork walls as measured/detailed on Structural drawings. Please clarify?

ANSWER: Correct clear sealer on concrete walls PA50 as noted and painted colored sealer on masonry walls PA51. Amendment forthcoming.

143. P949-Drawing AB701- Where is the security screen MW13 located in the building?

ANSWER: Response deferred.

144. P941 - AA125 - Wall Setout Plan, AB301 - Building Sections - Sheet 1 - There is discrepancy of wall lining height between wall legend and building sections. Please advise precedence.

ANSWER: AA125 wall call out for electrical rm wall in between grid b & c to change from M01 D to M01 C to align with AA30. Amendment forthcoming.

145. P941 - AA125 - Wall Setout Plan, AB411 - Details - Wet Area - Wall tiling is not shown on wall setout plan, but has been measured as 2400mm high wall tiles for Unisex toilet (Room016) based on drawings AB411. Please confirm height?

ANSWER: Confirmed. Wall tiles are slab to ceiling, therefore, as per the AA411 dwgs 2400mm also refer T-Sheet notes on floor to ceiling requirement.

146. P941 - Drawings AB151 and AB324 - There is discrepancy of ceiling to Electrical Room

(005) and Covered Weapons Cleaning (002) between drawings AB151 and AB324. On drawings AB151, CE10 allowed for Electrical Room (005) and CE02 allowed for Covered Weapons Cleaning (002), however, CE03 allowed for above areas on drawing AB324. Please advise?

ANSWER: Wall section 9 in AB324 to change ceiling callout from CE03 to CE10. Amendment forthcoming.

147. P949 - AA150 - Enlarged Reflected Ceiling Plan Sheet 1, AA151 - Enlarged Reflected Ceiling Plan Sheet 2, AA152 - Enlarged Reflected Ceiling Plan Sheet 3, AA521 - Detail Sections

- Sheet 1 - Roof safety mesh (INSM) to Register Storage Container (025) and Hazmat Storage

(024) only shown on reflected ceiling plan. But also found on drawings AA21 (Section C1 & C2) only to Hangar Bay Wing. Please confirm whether safety mesh is required to whole roof?

ANSWER: Yes. Safety mesh is required to all roof to meet Australian Standards.

148. P941/P949 - Drawing AB322 & AB721 - Cavity insulation between both blockwork external walls (MA2 & MA5) is referred to as both IN01 (40mm rigid board R2.0) as well as IN30 (Insulation - Underslab and Cavity Masonry). Please confirm whether all blockwork cavity insulation is IN01 (40mm rigid board R2.0)?

ANSWER: Insulation in between MA5 and external wall cladding is IN05 while insulation in between MA02 and MA05 is IN30. Amendment forthcoming.

149. Drawings AB153, AB154 - There is discrepancy of ceiling height between ceiling Legend and building section. CE30 is suspended ceiling and no furring channel, CE42 is raked ceiling in section, and CE51& CE53 are suspended ceiling. Please advise

ANSWER: CE30 – Ceiling is suspended with furring channel. Legend and T-sheet are correct.

CE42 – Ceiling is suspended and is raked with the pitch of the roof. Legend and T-sheet are correct, however legend on drawings AA153, AA154, AA155, AA156 will be revised to change CE40/CE42 hatch to CE42 only, to remove ambiguity.

CE51 – Fire rated ceiling (FRL 60/60/60 and Acoustic Performance Rw45) constructed with rondo joist system fixed to perimeter walls and ceiling fixed to these joists. This may appear as suspended ceilings in section however they are not suspended. Legend and T-sheet are correct.

CE53 – Fire rated ceiling (FRL 240/240/240 and Acoustic Performance Rw50+) constructed with joist system fixed to perimeter walls and ceiling fixed to these joists. This may appear as suspended ceilings in section however they are not suspended. Legend is correct; however T- Sheet includes discrepancy. T-Sheet will be revised to FRL 240/240/240.

Amendment forthcoming.

150. Drawings AB171 - Fire Wall Plan, AB201 - Building Elevations - Sheet 1, AB202 - Building Elevations - Sheet 2, AB510 - Details - Typical Wall - Types 180/180/180 Fire wall to Fuel Tank (006) on drawings AB171, but CD01 + M04 to Fuel Tank on elevations drawings.

According to details drawings AB510, CD01/ M04 are not classified as fire rated cladding or blockwork. Please advise?

ANSWER: AB510 to add 3H fire rating wall detail. Currently no 3hr wall detail for ADN.

Amendment forthcoming.

151. AB531 - Mechanical External Area Details, AB625 - Door Schedule - Width of DE251 (Door to external chain link fencing) on drawings AB531 does not match door schedule. Please clarify?

ANSWER: (DE251 is not shown on AB531 - we assume DE152 is meant?) The doors with Door Elevation DE152 (007, 009, 011, 017, 019, 021, 023) are specified as 900mm leaf width, and are elevated accordingly on sheet AB531 as 900mm. Sheet AB631 will be revised to remove the minimum clear opening dimension. Reader is to refer to the dimensions provided on the door schedule. Amendment forthcoming.

152. P923 - Electrical Drawings - Can you please supply information on the LV conduit sizes and number of conduits on drawings E-121 E-122 E-123 and E-119?

ANSWER: Each LV conduit section on these drawings has been tagged to nominate the size and quantity of LV conduits.

153. P923 - Electrical Drawings - The drawings and specs have limited information for the sub services DB in subs A-B and C. please clarify and provide information (drawings) as required?

ANSWER: The substation services distribution board is documented in the buildings drawing (EB set). Refer to layout drawings EB130, EB132 & EB135 and SLDs EB630, EB631 & EB632.

154. P923 - Electrical Drawings - Please clarify the use of the load shedding control panel on drawing E-630?

ANSWER: Load shedding ability is to be provided on all outgoing circuits on the LV main switchboard in each substation. Refer to drawings E-607, E-608 and E-610 for breakers required to have load shed control.

155. P923 - Electrical Drawings - Request cable sizes to the generator control box on drawings E-160, E-607 and E-608?

ANSWER: The cabling to the mobile generator link box is to match the cable size from the transformer. The earth cable size is to match the cabling from the earth bar to the earthing system. Control cabling is also required as per drawing E-654. Amendment forthcoming.

156. P923 - Electrical Drawings - Please clarify cable sizes from the 1500Kva transformer to the main switchboard in subs B and C drawings E-610 and E-608 as 1 core 240 mm cable would be too small for a 2000amp load? Please clarify?

ANSWER: Drawings E-608 and E-610 state "5x1C 240mm2 Cu Flexible EPR/EPR (110 deg C) per phase and neutral". Five conductors are required per phase and five for the neutral as stated on the drawings.

157. P923 - Electrical Drawings - Please clarify cable sizes for Substation A drawing-607 as 1 core 240 mm cable would be too small for a 2000amp load? Please clarify?

ANSWER: Drawings E-607 states "2x1C 240mm2 Cu Flexible EPR/EPR (110 deg C) per phase and neutral". Two conductors are required per phase and two for the neutral as stated on the drawings.

RESPONSES DEFERRED FROM NOTICE NO. 3 DATED 10 APRIL 2024

158. General-Specification. Most of the specifications contain the following standards:

AUSTRALIAN STANDARDS AND NEW ZEALAND STANDARDS (AS/NZS); ASTM

INTERNATIONAL (ASTM); U.S. GENERAL SERVICES ADMINISTRATION (GSA);

NATIONAL ASSOCIATION OF TESTING AUTHORITIES, AUSTRALIA (NATA). In the event of a conflict between these standards, which standard would prevail within a specification?

ANSWER: Please refer to Specification 01 11 00 paragraph 1.3. e.

159. In plans CE301-CE305, predevelopment cross section for MA09 shows the existing surface levels and design surface levels that compute the values of cut/fill for the apron.

Specification Section 31 23 00.00 20 requires an earthworks surface level survey report under paragraph 3.15.2.2. Will the government confirm that design surface levels for plans CE301- CE305 are intended to be the design subgrade level for the apron?

ANSWER: The design level shown on drawings CE301 to CE305 is the Earthworks Surface Level (EASL) as per the legend on the drawings and not the Design Subgrade Level (DSL).

160. In plan CP110 legends, a structural slab legend is included and is used in plans CP114, CP116, CP117, and CP118. However, no detail was shown in plans CP501 nor CP502. Will the government provide detail for structural slab type pavement?

ANSWER: The structural slab refers to the slab required over the Stormwater Quality Improvement Devices (SQIDS) as detailed in the CD set. The structural slab detail is provided on CD501 and further referenced on drawings CD401, CD402, CD403, CD404 and CD405.

161. In plans CG316 and CG318, annotated cross sections for MA0A and MA0B are shown respectively with its design surface levels. However, plans CL102 and CL103 spot elevations for same line does not coincide with station 60 and 80 of both MA0A and MA0B. Will the government confirm which of the plans shall be conformed to?

ANSWER: The annotated cross section plans (drawings CG316 and CG318) for control strings MA0A and MA0B show the correct design finished surface levels.

The design levels on the slab corners shown on drawings CL102 and CL103 corresponding to Chainage 60 m and Chainage 80 m (of control strings MA0A and MA0B) are incorrect and the spot levels will be updated to conform to the levels shown on drawings CG316 and CG318.

Amendment to drawings CL102 and CL103 is forthcoming.

162. Pavement Type 1 as indicated in plan CP501 makes use of 400mm jointed plain concrete or were shown on plans, high temperature resistant concrete. Will the Government confirm that high temperature resistant concrete for type 1 pavement is as highlighted below only?

1. Pavement Type 2 and 3 as indicated in plan CP501 make use of 240mm and 210 mm jointed plain concrete – heat resistant Portland cement concrete respectively. Detail description composed 2 types of concrete, plain and heat resistant. Will the government clarify which type shall be conformed to for Type 2 and Type 3 pavement?

ANSWER: Yes, for Pavement Type 1 (Heavy Duty Rigid Pavement - Apron) the areas highlighted in red and matching to the closest longitudinal and transverse joint are the only areas where 400 mm thick High Temperature Resistant Concrete (HTC) is required to be placed. The set-out points on CP113 and CP114 for the High temperature resistant concrete across the second row of MV-22 stands (from Taxiway A) will be amended to match the longitudinal joint locations. For clarity the width of the HTC across this parking row is 21.75 m.

Pavement Type 2 (Medium Duty Rigid Pavement - Helipad) requires provision of 240 mm Jointed Plain - Heat Resistant Portland Cement Concrete (only). As per Drawing CP110 and CP111, Pavement Type 2 is required to each helipad. For clarity 240 mm high temperature resistant concrete is required.

Pavement Type 3 (Medium Duty Rigid Pavement - Rinse/Wash Rack Pad) requires provision of 210 mm Jointed Plain Concrete - Heat Resistant Portland Cement Concrete required to aircraft rinse only. Drawing CP116 shows the extent of Pavement Type 3 to the Aircraft Wash and notes normal Portland Cement Concrete to be provided. Drawing CP117 show the extent of Pavement Type 3 to be provided to the Aircraft Rinse. For clarity high temperature resistant concrete is required to the Aircraft Rinse only.

163. Epoxy resin surface bounded by epoxy setout points E1, E2, E3 and E4 in plan CP130 has dimensions of 220m length and 18m width. Similarly, epoxy resin surface bounded by epoxy setout points E5, E6, E7 and E8 in plan CP130 has dimensions of 220m length and 18m width.

The area bounded by E5, E6, E7, and E8 coincides with the heat resistant Portland cement concrete shown in plan CP-113 and CP-114 bounded by setout points 59, 60, 63 and 64.

However, the area bounded by setout points 56, 57, 61 and 62 has dimensions of 220m length and 20.5 m width. Will the Government confirm that the 220m by 2.5m of the area bounded by setout points 56, 57, 61 and 62 have no epoxy resin surface?

ANSWER: The epoxy resin surface sealant extents shown on drawing CP130 are correct. The 220 m x 2.5 m of concrete beyond the MV-22 parking stands will have no epoxy resin surface sealant.

164. Upon computation of excavation and fill, it is found out that the design subgrade for MA09 station 360 Offset -120 to -180 is too low to achieve the design surface level. Select fill height will average 2 meters to compensate the excavated 2 meters for the design subgrade level.

Similarly, MA09 station 380 Offset -100 to -180 will have select fill height averaging 2.4 meters to compensate the excavated 2 meters depth for the design subgrade level. Will the government confirm the intent for the 2-meter excavation or revise the design subgrade level for Offset -120 to -250 of station 360 and Offset -100 to -250 of station 380? This is in reference to plans CE305 and CG314 as shown below.

ANSWER: The design level shown on drawings CE301 to CE305 is the Earthworks Surface Level (EASL) as per the legend on the drawings and not the Design Subgrade Level (DSL).

165. P-132 & P-803. Per P-132 Key Note 3, the Filter Backwash Drain is to be 225mm. On sheet P-803 AIRCRAFT RINSE BUILDING ISOMETRIC VIEWS, the Filter Backwash Drain is 250mm. Please confirm the Filter Backwash Drain Diameter.

ANSWER: Filter Backwash Drain Diameter to be 225mm, P-132 Key Note 3 is correct. Sheet P- 803 will be revised in forthcoming amendment.

166. MF001-MX601. Sheet MF001 has several boxes that break up words and sentences and Sheets MP010 - MP021 have several letters missing. Both the boxes and missing letters are throughout the Mechanical Process Water System sheets as well and diminish the meaning of the information on these sheets. Sheet numbers, details, general notes, and specifications are affected. Please reissue the referenced set with legible drawings.

ANSWER: Drawings MP302, MP322, MP340, MP511, MP520, MP541, MP542, MP543 and MX601 will be revised in forthcoming amendment.

167. MH132 & MH601. MH132 references SG-3C, this is not included on the MH601 Schedule of Air Distribution Devices. Please provide the basis of design for SG-3C.

ANSWER: Response deferred.

168. MA106 & M601. MA106 has device E3 labeled in the battery shop, however, E3 is not on the Diffuser and Register Schedule on Sheet M-601. Please provide the basis of design for E3.

ANSWER: Drawing MA106 - E3 will be amended to be labeled E1. Amendment forthcoming.

169. MA106 & M601. EF-A-11 is called out on Sheet MA106 but is not on the Exhaust Fan Schedule on M601. Please provide schedule details for EF-A-11.

ANSWER: Drawing will be updated to add EF-A-11 to exhaust fan schedule. EF-A-11 sizing is as follows:

Volume: 200L/S External SP: 93.4 Pa Voltage/Hz/Phase: 115/60/1 Motor: 1/4 hp Amendment forthcoming.

170. MA107. See Room H10 on Sheet MA107. The 3 Way Supply Diffuser Tag is not provided. Please provide Diffuser/Grille Type, Number, and Airflow.

ANSWER: Drawing will be revised to provide diffuser tag with type S1 and 65 L/s. Amendment forthcoming.

171. MB901. MB901 does not include FCU-B-05 in the HVAC Chilled Water Piping Diagram. Please provide piping diagram to include FCU-B-05.

ANSWER: FCU-B-05 shall have Chilled Water Supply and return piping with diameter 32mm.

The condensate piping will have a diameter of 32mm. Drawings will be revised in forthcoming amendment.

174. General, Site Walk. During the site walk, it was noted that there is currently a contractor occupying the area assigned for this contract. In discussion with this contractor, they indicated that they were currently negotiating a follow-on contract to their current airfield rehabilitation project that will extend their duration on site until mid to late 2025. The contractor's office area, laydown area, asphalt batch plant, and aggregate stockpile areas are within the footprint of the base bid item on this project. Does the Government expect this RFP to receive a delayed NTP to account for contractors already on-site? If so, how will this affect the bid and award schedule for this NAVFAC project?

ANSWER: Response deferred.

175. General, Site Walk. During the site walk, substantial differences were noted between the design drawings and actual conditions within the parking apron and at the hangar location, apparently made by the contractor already on site. This was most notable by the site clearing and fill operations performed by the on-site contractor to establish their laydown, offices, batch plant areas, etc. After reviewing the topographical drawings for this project, it looks as though the levels have adjusted considerably, which will result in additional work for the winning bidder.

How does the Government intend to manage this changed condition? Please confirm that any changes in topographical line and level that result in additional work for the awardee will be addressed and compensated through FAR 52.243-1 Changes Fixed Price Construction.

ANSWER: Response deferred.

176. General, Site Walk. During the site walk, several very large stockpiles were noted in the area assigned for the construction of the parking apron. These stockpiles are not noted in the contract documents. Further, the stockpiles were identified by localized signage as contaminated waste. Please confirm that the awardee will not be responsible for the testing or disposal of these contaminated stockpiles.

ANSWER: Response deferred.

178. General, Site Walk. During the site walk, the closeness of the project to the existing runway was noted. Although there are measures in place within the contract for work near the active portion of the runway, such as taxiway closures, we need to understand if this project is considered land-side or air-side. It is also not mentioned in section 01 14 00 para 1.12 method of Working Plan for Airfield Activities. This information is critical, as the safety measures that need to be budgeted for are very different between the two. Please advise if the project is considered “air-side” or “land-side.”

ANSWER: The Project will require both landside and airside construction. The current airside and landside boundary is defined by the perimeter security fence south of the BRA and FRA.

Works within the fence are 'airside'.

The MOWP is different to the overall construction phasing approach which considers the entire works. The intent of a Method of Working Plan (MOWP) is to communicate the restrictions to aircraft operations based on each defined MOWP stage and location of the works either on or in proximity to existing aircraft pavements. Work area within a MOWP stage are considered 'airside'.

The draft MOWP developed for the project provides a proposed staging approach, access routes and the associated restrictions to aircraft operations for those works which will impact on existing aircraft pavements only. The airside/landside boundary for each stage is illustrated on the staging plans. The draft MOWP proposes that as part of Stage 5 and Stage 6, the airside fence is moved north toward Runway 11/29 to maximize the extent of works which are considered 'landside' and will not impact on aircraft operations.

The Contractor is required to develop the final MOWP for approval by Darwin International Airport prior to commencement of the Works which aligns to their overall construction phasing approach.

179. Section 01 11 00, para 1.11. This paragraph identifies the requirements under the Australian Requirements. These requirements are not normally required under US Government projects or are typically resolved directly between the US and host nation governments prior to any construction so that the Government period of performance for the contract is not impeded in any way. Please advise if these host nation requirements, such as but not limited to HOTO, CEIO, DER, DEIM, etc., have already been established and agreed to or if the contractor to perform these requirements as part of this contract.

ANSWER: Contractor is to perform these requirements.

180. Section 01 11 00, para 1.11. The host nation requirements identified in this section will take considerable time to prepare, submit, and obtain approval for. Considering the already tight period of performance, please amend the NTP date from 21 days after the award to after the host nation's administrative requirements are complete.

ANSWER: Response deferred.

181. Section 01 11 00, para 1.11.5.4, sub para b. This paragraph states ‘without limiting the contractor’s obligations under clause 4 and 5.1, the contractor agrees that were an explosive ordnance consultation cooperation and coordination plan is required by eDEOP 101 or otherwise directed by the contracting officer], the contractor will develop and EEO CCC Plan which address…’. It is not clear within the contract documents whether this plan is required. Please advise if it is or is not required so that it can be budgeted accordingly into the cost and schedule.

Also, if required, does each CLIN/Option require its own plan or will a single plan covering the entire project site be sufficient?

ANSWER: Response deferred.

182. Section 01 11 00.01 Para 1.1.10. This paragraph identifies the requirements for the HOTO on multiple delivery stages/or sites. As this project is split into 3 CLINS/Options, is it considered a multiple delivery in terms of HOTO or will a single HOTO plan be sufficient to meet the intent?

ANSWER: Response deferred.

183. Section 01 11 00.01 Para 1.2.1. This paragraph includes a detailed table identifying the HOTO requirements by procurement stage. Item 5.12 includes requirements for hazardous area and explosive area verification dossier. We could not find any requirements in the rest of the specifications that require any UXO survey or removal work. Please confirm that we do not need to provide a full-time UXO tech on site in case of UXO detection.

ANSWER: Full time UXO tech is not required as per the UXO safety Management Plan.

184. Section 01 14 00, para 1.3.4. This paragraph refers to the Inhabited Building Distance Arcs. Please provide these arcs in reference to the construction area.

ANSWER: Please refer drawing XO101 for Arcs.

185. Section 01 30 00, para 1.13.1, sub para f. In this paragraph the Government states that followon partnering sessions are required at 3-month to-6-month intervals. Facilitator costs are extremely expensive and are likely to run at approx. $70,000 USD per trip. Please advise if the Government will require the facilitator at 3 months or 6 months, and also can the follow-on sessions be performed with the facilitator remotely? This would lower the overall partnering cost considerably.

ANSWER: Response deferred.

186. Section 01 30 00, para 1.18. This paragraph discusses the Australian Indigenous Procurement Policy. It references that employment must make reasonable efforts to meet the plan requirements. Please provide the referenced plan and a baseline of what would be considered ‘reasonable effort’.

ANSWER: Specification 01 30 00, para 1.18 is not applicable. Amendment forthcoming.

187. Section 01 31 20 para 1.1.1. This section includes the requirements for the technical data management system. It is unclear what the objective of this section is in relation to the project. Is this section intended to be used in lieu of ECMS? Is the intent to require the contractor to establish a data processing site for storage of documents, document updates, as-built documentation, submittal transfer etc., but on a more detailed level than ECMS? Please provide a summary of what the intended outcomes of this section are and how they apply to this project.

ANSWER: Response deferred.

188. Section 01 31 20 para 1.6. This paragraph identifies the person and qualifications of the data management team. Please advise if these people are to be onsite or if they can be an off-site function.

ANSWER: Response deferred.

189. Section 01 32 17.00 20, para 1.2.2. This section states that the NAS baseline must be submitted within 30 days of notice of award. Usually, on projects of this magnitude and complexity, the Government requests an interim 90-day schedule within 30 days of award, then the NAS baseline schedule within 90 days of contract award. It will be extremely difficult to prepare and submit the NAS baseline schedule within 30 days of contract award, considering that NTP will be approx.