C-2 Attachment 3-1 Amendment to M203 Rev1.pdf
PDF 440 KB Posted
- Attached to
- JRD Compound Heating - Ventilation - Air Conditioning & Envelope Improvements Federal contract opportunity
- Solicitation number
- 1240BJ26Q0001
- Issued by
- Department of Agriculture Forest Service
About this file
This is a technical design drawing for HVAC modernization at the ANM-JRD Compound located in Tongass National Forest, Juneau Ranger District, Alaska. The drawing (Sheet M203, Revision R10) dated June 20, 2025, was prepared by Alaska Energy LLC with registered professional engineer James A. Rehfeldt (ME-8987) and depicts the site details for direct bury piping installation serving three buildings: storage, office, and warehouse.
The design includes a vault with access hatch, multiple expansion loops, and direct bury heating/refrigeration (HS/HR) piping in two sizes—1-1/2" to the storage building and 2" to both the office and warehouse buildings. Technical details provided cover direct bury pipe trench requirements (minimum 10" depth typical), wall penetration specifications using core drill and grout sealing, building branch connections with slab removal and replacement as needed, piping anchor details with 36" long concrete blocks and 1/2" anchor plates, and pipe marker placement 12" from surface. The piping system utilizes Type K copper carrier pipe with HDPE jacket and polyurethane foam insulation, with specific internal diameters of 10" for 3" HS/HR and 8" for 2" HS/HR. All in-vault piping and channel supports are included in the scope, with references to civil drawings for complete trench requirements and architectural drawings for slab modifications.
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Text version
(X) DIRECT BURY 1-1/2" HS/HR
TO STORAGE BLDG
VAULT
ACCESS
HATCH
(X) EXPANSION LOOP 3
TYP OF 2
(X) EXPANSION LOOP 1
TYP OF 2
(X) EXPANSION LOOP 2
TYP OF 2
(X) ALL PIPING IN VAULT, TYP
(X) ALL CHANNEL SUPPORTS
IN VAULT, TYP
(X) DIRECT BURY 2" HS/HR
TO OFFICE BLDG
(X) DIRECT BURY 2" HS/HR
TO WAREHOUSE BLDG
(X) VAULT
DATENO.
REVISION / ISSUE
(R10)
ALASKA REGION
06.20.2025
Alaska
ENGINEERING LLC
25200 Amalga Harbor Phone: 907-789-1226 Juneau, Alaska 99801 jim@alaskaenergy.us
Energy
JR
JR / KB
JR
James A. Rehfeldt
ME-8987
R EG IST ER E D PR O FE S S IO NA L E NGINEER
NOTE: 11"x 17" PRINT IS HALF SIZE
TONGASS NATIONAL
FOREST
JUNEAU RANGER DISTRICT
M203
SITE DETAILS
ANM-JRD
COMPOUND
HVAC
MODERNIZATION
FOR
CONSTRUCTION
06/20/2025
N
VAULT DEMO PLAN
SCALE: 0 1' 2'6" 4' SCALE: NONE SCALE: NONE
DIRECT BURY PIPING
CORE DRILL WALL
FILL ANNULAR SPACE
WITH QUICK SET MORTAR
(E) CONCRETE WALL
6" MIN 6" MIN 6" MIN
MIN 36"
6" MIN
DIRECT BURY HS/HR
6" MIN
PIPE MARKERS
12" FROM SURFACE
SCALE: NONE
DIRECT BURY PIPE TRENCH DETAIL
10"
MIN
TYP
10" MIN
36" LONG CONCRETE
ANCHOR BLOCK
DIRECT BURY PIPING
1/2" THICK ANCHOR PLATE
SCALE: NONE
DIRECT BURY PIPING ANCHOR DETAIL
10" MIN
DIRECT BURY PIPING
WALL PENETRATION DETAIL
DIRECT BURY PIPING
BUILDING BRANCH DETAIL
HS/HR
(E) SLAB
(E) WALL
SEE CIVIL FOR PIPE
TRENCH REQUIREMENTS
CORE DRILL STEM WALL
PENETRATIONS. SEAL WITH GROUT.
TYPE K COPPER
CARRIER PIPE
SCALE: NONE
DIRECT BURY PIPE DETAIL
HDPE JACKET
3" HS/HR - 10" ID
2" HS/HR - 8" ID
POLYURETHANE
FOAM
SEE CIVIL FOR PIPE TRENCH
REQUIREMENTS
DIRECT BURY
HS/HR
(E) FOOTING
REMOVE AND REPLACE
SLAB AS REQUIRED TO
INSTALL PIPING.
SEE ARCH DRAWINGS
M203
M203
M203
M203
M203
M203
SEE CIVIL FOR PIPE TRENCH
REQUIREMENTS
DIRECT BURY PIPING
DIRECT BURY PIPE MODIFICATION 2-20-26
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