21R1334 Note 5 Final.pdf

Notice No. 5

17 March 2021

PRE-PROPOSAL QUESTIONS & ANSWERS

RFP N62742-21-R-1334

J-023 BACHELOR OFFICER QUARTERS-A,

US NAVSUPPACT MCB, GUAM

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.

REVISED RESPONSE TO NOTE 4 OF 01 MARCH 2021

64. Drawing A-601 & Spec.08 14 00 para. 2.1.3, Bi-Fold Doors Type C & D.

a. Are the bi-fold doors supposed to be the same species as the other wood swing doors?

As quoted by our vendor, “hardboard grade doesn’t make much sense, bi-folds are usually wood, and bi-fold openings don’t require hollow metal frames “.

RESP: Bi-fold doors revised to 38mm birch wood doors. Frames remain hollow metal. See Amendment 0007.

b. The doors are shown as 44mm thickness in ref. drawing A-601 while specification 08 14 00 para. 2.1.3 specify 35mm thickness. Please clarify.

RESP: Door thickness is 38mm. See Amendment 0005.

QUESTIONS AND RESPONSES CONTINUE

106. RFP Document 00600-REV1, 1.13 3 DFARS 252.236-7010, OVERSEAS MILITARY CONSTRUCTION – PREFERENCE FOR UNITED STATES FIRMS (JAN 1997). Please clarify whether the PREFERENCE FOR UNITED STATES FIRMS (JAN 1997) applies to J-023 Bachelor Officer Quarters-A Project. (See 1.12 in Original Request for Proposal & 1.13 in Amendment 3.) We are requesting clarification because we are aware of at least eight (8) Mamizu projects in Guam that have not imposed the U.S. firm preference. As such, we are respectfully requesting removal of DFARS 252.236-7010.

RESP: DFARS 252.236-7010 has been deleted. See Amendment 0005.

107. A schedule of toilet accessories is provided in Spec Section 10 28 13. For the Typical Living Units, the schedule does not call out for any grab bars; however, the floor plans for the living units on Sheets A-401 and A-402 show grab bars to be installed in the shower. Please advise which takes precedence.

DEPARTMENT OF THE NAVY

NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND, PACIFIC

258 MAKALAPA DRIVE, SUITE 100

JOINT BASE PEARL HARBOR HICKAM, HAWAII 96860-3134

RESP: Section 10 28 13 Toilet Accessories listing will be revised. See Amendment 0006.

108. On Sheet A-315, it indicates the ceiling at the fifth floor corridor to be a 1-hour fire-rated lid. Please provide details for this ceiling. Also, please advise if ceilings at the fifth floor units should be similar.

RESP: Removed the 1-hour fire rated lid and replaced it with a 1-hr fire -rated wall partitions above CMU walls at the fifth floor corridor. See Amendment 0006.

109. Please provide finish texture (fine, sand, smooth, etc.) for each type of EFS called out.

RESP: Finish texture is Fine. See Amendment 0006.

110. Response to RFI 64 changed the frames for Door Types C and D from hollow metal to wood. Please provide details and requirements for the wood door frames.

RESP: Response to Question 64 has been revised. Door frames for Door Types C and D revised to hollow metal.

111. Please provide requirements (material, thickness, etc.) for the overflow scupper shown in Detail 7/A-511.

RESP: Added additional information to the overflow scupper detail. See Amendment 0006.

112. Please provide dimensions for the vision panels shown on Sheet A-605 for Door Types A and B.

RESP: Added vision panel size. See Amendment 0006.

113. Dwg sheet# T-605 for Commercial Voice and Data Riser Diagram doesn’t show WAP outlet for every BOQ units whereas the floor plans from dwg sheet# T-113 through T-115 and dwg sheet# T-123 through T-125 show 1-WAP outlet on every BOQ unit but doesn’t show the locations of Voice and Data outlet.

a. Please clarify whether WAP outlet for every BOQ units are required.

RESP: WAP outlets are required in each of the BOQ units. See Amendment 0006.

b. Please provide the locations of 2-voice and data outlets for the 194 BOQ rooms (10- Accessible Units, 40-Utility Units, and 144-Typical Units)

RESP: Each of the BOQ units are equipped with two locations with a single Category 6 cable at each that can be used for voice or data. One in living room and one in the bedroom. See Amendment 0006.

114. Reference Specification Section 09 30 10, Para 3.4. The installation method “F11S” listed here cannot be located in the TCNA Hdbk. Please clarify the correct installation method.

RESP: See Amendment 0006.

115. Reference Specification Section 09 30 10, Para 3.4. The installation method “F121” requires the tile be installed over a mortar bed. There is no indication on the Architectural or Structural drawings that there will be any recess on the substrate to allow for the thickness of the mortar bed. Please clarify if the intention is to have the floor tile installed over a mortar bed creating a higher plane of finished floor in relation to adjacent non-tile flooring.

RESP: See Amendment 0006.

116. Reference Drawing A-631 and A-431, Janitorial Room Detail B in regards to wall finishes for Janitorial Room. Finish Schedule calls for HT-5 wall finish on Wall B whereas Janitorial Detail B on A-431 does not reflect HT-5. Please clarify which is correct.

RESP: Wall finishes at Janitorial Room to be HT-5/PT-1. See Amendment 0006.

117. Reference Spec Section 09 30 10, Para 2.5 in regards to transition strips at hard tile. This paragraph calls for marble thresholds. Details 8 and 3 on A-502 shows a metal type threshold. Please clarify which is correct and if metal type is required rather than what is specified, please provide a basis of design.

RESP: Removed marble threshold in 09 30 10. See forthcoming amendment.

118. Reference Spec section 22 00 00, Para’s 2.4.10 and 2.4.12 in regards plastic bathtub wall surrounds and Bathroom Elevations A, B, C and D on Drawings A-401, A-402 and A-403. The details on the drawings along with the Finish Schedule on Drawing A-631 indicate hard tile on the bathtub wall surrounds whereas the specifications list plastic surrounds in these areas. Please clarify which is correct.

RESP: Bathtub wall surrounds shall be provided in accordance with the architectural drawings.

See forthcoming amendment.

119. Reference Spec section 22 00 00, Part 2 Products and Drawing P-602 Plumbing Fixture Schedule in regards to SH Tub/Shower and A-SH Shower, Accessible. Please clarify which items listed in the specifications are these two particular items.

RESP: Only Tub/Showers and Accessible Tub/Showers are applicable to this project. Provide bathtub and shower fixtures in accordance with 22 00 00 2.6.2. See forthcoming amendment.

120. Reference Drawing P-701 in regards to the isometrics indicating SH (Tub/Shower) in the Typical Units. This SH notation is not indicated on the Plumbing plans (refer to Drawing P-111) nor on the Typical Standard Unit plans (refer to Details 1 and 2 on Drawing P-401).

RESP: SH, as referenced in the plumbing fixture schedule on sheet P-701, refers to T/S Tub/Shower, which are referenced in the drawings. A-SH references the accessible tub/showers in the drawings. See forthcoming amendment.

121. Reference Spec section 22 00 00, Para 2.4.11 in regards to Plastic Bathtub Liners. Please confirm these bathtub liners are not applicable to this project.

RESP: Plastic bathtub liners are not applicable to this project. See forthcoming amendment.

122. Reference Bathroom Elevations B, C and D on Drawing A-403 and Floor Plan 2 on Drawing A-403 in regards to the tub/shower unit shown on the Accessible Unit Floor Plans. Please clarify this tub/shower unit is correct for the accessible units.

RESP: Confirming tub/shower unit is correct for accessible units.

123. Reference Spec section 22 00 00, Para 2.4.13 in regards to Precast Terrazzo Shower Floors. Please confirm these precast terrazzo floors are not applicable to this project.

RESP: Precast terrazzo shower floors are not applicable to this project. See forthcoming amendment.

124. Reference Spec Section 09 30 10, Para 3.4 in regards to Installation of Ceramic Floor Tile. The installation techniques described here are to include a waterproof membrane. Although there is no hard tile required under the tubs in the Units, please clarify if the waterproof membrane is to be included under the tubs in these locations.

RESP: Confirmed. Note added to DWG A-631. See forthcoming amendment.

125. NOT USED.

RESP:

126. Reference Spec Section 09 30 10, Para 3.4 in regards to Installation of Ceramic Floor Tile. The installation techniques described here all include a waterproof membrane under hard tile. Please clarify if this waterproof membrane is to be included under the hard tile in the dry areas, such as Lobby, Multi-Purpose, and Corridors.

RESP: Confirmed waterproof membrane is excluded at the lobby, multi-purpose, and corridors.

See forthcoming amendment.

127. The term “skim coat” is used on sheet A591 Partition Types (see Wall Types 8 and 10 as examples). This term is not used in Spec 09 26 00 Veneer Plaster or Spec 09 99 00 Paints and Coatings. Spec 09 29 00 Gypsum Board uses this term in relation to the application of a Level 5 finish over sheetrock (see Para. 3.4.1 and GA 214). The term “skim coat” is not clarified on sheet A591 Partition Types, A621 Material Finish Schedule, in Amendments 1 through 5, or in Notes 1 through 4. Please direct us as to where this term, “skim coat”, is clarified in the existing documents or give us direction as to what this product is and its application requirements.

RESP: Revised the callout to veneer plaster. See Amendment 0006.

128. Section 12 24 13 Paragraph 1.5.1.1 notes motor-controlled roller shades; however, the electrical drawings do not show any electrical connections for the window shades in the living units or general areas. Please confirm motor-controlled window shades are not required. If motor-controlled window shades are required, please provide circuit connections for the window shade

RESP: Revised Section 12 24 13 to remove motor-controlled wording. See forthcoming amendment.

129. The frames for the laundry doors in the living units were changed to wood in Amendment 5; however, the head and jamb detail still reference ones for HM door frames. Please provide details for the wood door frames.

RESP: Confirmed laundry doors must be provided with hollow metal frames. See forthcoming amendment.

130. Regarding RFI response 50 and revised specification section 31 32 23, para 3.2.3.2. – The specs call for placement of grout by gravity method with the use of a tremie pipe. If the minimum diameter of the hole is 50 mm or 2-inches, only 25 mm or 1-inch dia. tremie pipe can be used. 1” diameter is too small to grout by gravity. The tremie pipe may get stuck or wedged in the hole if a small rock falls inside between the annular space of the pipe and hole that will be very difficult to pull out.

Normal practice for the grout is poured directly into the hole by gravity method. The grout is placed on one side of the hole to avoid trapped air on the grout. If large cavities are encountered, a small diameter pipe is inserted in the hole with air pressure introduced in the pipe during grouting to ensure the high-slump grout is pressurized to fill the voids. Also, 10 ft depth of grouting is very shallow and direct pour by gravity is suitable method. Please consider to waive the tremie placement of grout.

RESP: A tremie pipe must be used in the event that the hole gets plugged prior to the grout reaching the bottom. The contractor has the option of using a probe tip larger than 51 mm diameter so a tremie pipe can be inserted without getting stuck. In some areas, structural fill may be encountered above the coralline limestone which may prevent the grout from reaching the bottom of the probe hole if sloughing occurs. Therefore a tremie pipe will be required for the grouting under foundations.

131. Please advise grout strength for probing and grouting.

RESP: A minimum strength of 150 psi should be used. See forthcoming amendment.

132. Please advise if contractor is able to install regular PVC C900 pipes by open trench method instead of fusible PVC and/or trenchless piping.

RESP: No, the pipe material must be fusible PVC per contract documents.

133. M-601 – The chiller flow rate is 14.3 lps but the CHW pump flow is 27.8 lps. This is a very large discrepancy in flow and the pressure drop of the chiller would be incorrect. This would cause excessive velocity thru the tubes and would result in a 10.4 deg leaving temp from the chiller. QUESTION: Please confirm the correct flow rate.

RESP: 14.3 LPS for CHW pump. See forthcoming amendment.

134. M-601 – The WSHP has a stated minimum capacity of 464 kW. The evaporator conditions are 4.2 lps @ 7.7 temperature difference. The evaporator capacity at that condition is only 136.5 kW. QUESTION: Please confirm the correct flow rate and/or capacity.

RESP: Revised WSHP schedule. See forthcoming amendment.

135. M-601 – CWP-4 & 5 are dedicated to the WSHP with a flow of 10.7 lps. The WSHP has a flow rate of 4.2 lps This is a very large discrepancy in flow and the pressure drop through WSHP would be incorrect. This would cause excessive velocity thru the tubes and would result in a 8.9 deg leaving temp from the WSHP. The increased flow rate would still not meet the 464 kW capacity. QUESTION: Please confirm the correct flow rate.

RESP: 9.5 LPS for CWP-4 & 5 to match revised WSHP schedule. See forthcoming amendment.

136. M-601 – CWP-4 & 5 are dedicated to the WSHP with a head pressure pf 491 KPA. These pumps do not contribute flow or pressure to the main system pumps. This is the same head pressure listed for the system pumps. The listed pressure drop for the WSHP is 9.16 KPA.

QUESTION: Please confirm the correct pump head.

RESP: CWP-4 & 5 revised for WSHP branch. See forthcoming amendment.

137. M-601 – The FCU capacity is 1.1 kW and the condensing unit is 3.52 kW. Both pieces of equipment must match for the unit to operate properly. QUESTION: Please confirm the equipment capacity.

RESP: 1.1 kW for ACCU. See forthcoming amendment.

138. M-403 – The exhaust piping and muffler for the generator are not shown. QUESTION:

When will this information be available?

RESP: Yes. See forthcoming amendment.

139. M-001 – Work Notes # 10 states to route all control and motor starter wiring in conduit.

QUESTION: Please clarify if this is only 120v and above or if this also includes 24v.

RESP: Only 120V and above. See forthcoming amendment.

140. M-704, Sequence of Operation, II.A –States the return chilled water temperature to be 12.2 degree. All of the equipment schedules have the return water as 14.4 degree. QUESTION:

Please clarify.

RESP: 14.4 degrees for chilled water return. See forthcoming amendment.

141. M-114, M-403, & M-901 –No air separator is shown for the chilled water system.

QUESTION: Please confirm this is correct.

RESP: Added air separator. See forthcoming amendment.

142. P-727 –AHP-1 & AHP-2 are served by a single pump. There is no way balance the flow between the two pieces of equipment. QUESTION: Should a balancing valve be added to each unit?

RESP: Provided balancing valves. See forthcoming amendment.

143. M-601 – WSHP-1 condenser entering temperature is higher than the leaving temperature.

QUESTION: Are these temperatures reversed?

RESP: See revised schedule on M-601. See forthcoming amendment.

144. M-601, P-602, & P-727 – WSHP-, AHP-1, and AHP-2 equipment schedules list the discharge temperature as 57.2 degrees but the piping schematic and sequence of operations states 60 degree discharge. A 60 degree temperature is the preferred temperature to prevent legionella.

QUESTION: Which temperature is correct?

RESP: Confirmed. 60 degrees shall be the water discharge temperature. The equipment schedules on M-601 and P-602 will be revised. See forthcoming amendment.

End of Notice