177_P-109_R1_AMENDMENT 010.pdf
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- Solicitation number
- N6247026R0012
About this file
This is an architectural drawing sheet depicting the Attic Plumbing Plan for the West section of Building 60, scaled at 1/8" = 1'-0". The document is classified as Unclassified and references Revit file 22103.25_BLDG60_MECHANICAL-V23, dated March 20, 2026.
The sheet provides detailed specifications for radon mitigation and plumbing systems within the attic space. Key requirements include: provision of a radon vent extending a minimum three feet above the roof penetration with architectural flashing and sealing per referenced sheets; coordination with electrical sheet EP107 for exhaust fan installation along the vent riser; and provision of 4'-0" clearance around the fan for maintenance access. The document references Option 3, which requires engaging a certified professional radon mitigation specialist to select and pre-wire an inline fan if radon testing indicates elevated levels within the building and the government awards this option. Additional specifications include providing transition piping to raise horizontal radon pipes above heating water piping and coordinating all piping and equipment installation to maintain mandatory clearance zones around crane rails and bridge crane operational travel paths. All work must comply with plumbing legends, abbreviations, and general notes referenced on sheet P-001.
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Text version
ROOF BELOW
6" R DN
6" R DN6" R DN
2" V DN & RISE
TO 3" VTR
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4" V DN & RISE
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2" V DN & RISE
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2"
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SATISFACTORY TO DATE
APPROVED
FOR COMMANDER NAVFAC
SEAL
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GENERAL NOTES KEYNOTES
1/8" = 1' - 0" 0 5' 10' 15' 30'
GRAPHIC SCALE
KEY PLAN
CHECK GRAPHIC SCALE BEFORE USING
MATCH LINE
PLAN
NORTH
1.
2.
PROVIDE RADON VENT UP THROUGH ROOF, EXTENDING A MINIMUM THREE FEET ABOVE ROOF PENETRATION. SEE ARCHITECTURAL SHEET AE521 FOR ROOF PENETRATION, FLASHING, AND SEALING REQUIREMENTS. SEE ELECTRICAL SHEET EP107 FOR REQUIRED PRE-WRING FOR INLINE EXHAUST FAN ALONG VENT RISER TO FACILITATE AN EXHAUST FAN INSTALLATION. IN THE EVENT RADON TESTING IDENTIFIES ELEVATED RADON
LEVEL WITHIN THE BUILDING AND THE GOVERNMENT AWARDS OPTION 3.
OPTION 3: PROVIDE CERTIFIED PROFESSIONAL RADON MITIGATION SPECIALIST SELECTED INLINE FAN AT PRE-WIRED LOCATIONS (3) IN ATTIC.
PROVIDE 4'-0" OF CLEARANCE AROUND FAN FOR MAINTENANCE.
PROVIDE TRANSITION TO RAISE HORIZONTAL RADON PIPE ABOVE HEATING WATER PIPING. SEE SHEET MP107 FOR HEATING WATER PIPING
DETAILS IN ATTIC.
SCALE: 1/8" = 1'-0"
B3
ATTIC PLUMBING PLAN - WEST
SEE P-001 FOR PLUMBING LEGENDS, ABBREVIATIONS AND GENERAL NOTES.
COORDINATE THE INSTALLATION OF PIPING AND EQUIPMENT TO MAINTAIN MANDATORY CLEARANCE ZONES AROUND CRANE RAILS AND BRIDGE CRANE
OPERATIONAL TRAVEL PATH.
(THIS SHEET ONLY)
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| Sheets |
| M-703 - MECHANICAL CONTROL DIAGRAMS 3 |
| MD102 - FIRST FLOOR MECHANICAL DUCTWORK REMOVALS PLAN - EAST |
| P-101 - UNDERSLAB PLUMBING PLAN - EAST |
| P-102 - UNDERSLAB PLUMBING PLAN - WEST |
| P-103 - FIRST FLOOR PLUMBING PLAN - EAST |
| P-104 - FIRST FLOOR PLUMBING PLAN - WEST |
| P-105 - FIRST FLOOR MEZZANINE PLUMBING PLAN - EAST |
| P-106 - FIRST FLOOR MEZZANINE PLUMBING PLAN - WEST |
| P-107 - SECOND FLOOR PLUMBING PLAN |
| P-108 - SECOND FLOOR MEZZANINE PLUMBING PLAN |
| P-109 - ATTIC PLUMBING PLAN |
| P-401 - ENLARGED PLUMBING PART PLANS 1 |
| P-402 - ENLARGED PLUMBING PART PLANS 2 |
| P-403 - ENLARGED PLUMBING PART PLANS 3 |
| P-601 - PLUMBING SCHEDULES AND DETAIL |
| P-701 - PLUMBING RISER DIAGRAM |
| PD102 - FIRST FLOOR PLUMBING REMOVALS PLAN - EAST |
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