ARR 551-554 UNDERCAR HVAC SUBFRAME.pdf
PDF 516 KB Posted
- Solicitation number
- 25-63 ARR551 ITB ARR 551 Coach Paint, Repairs, HVA
- Issued by
- Aleutians East Borough, Alaska
About this file
These are technical engineering design drawings for the Alaska Railroad Corporation (ARRC) detailing an Under Car HVAC Support system for Passenger Coaches, specifically for ARR 551-554 rail cars. The drawings provide a comprehensive general arrangement and installation specifications for a new HVAC subframe support structure, with detailed schematics showing the integration of contractor-supplied and ARRC-provided components. The design includes precise measurements and installation instructions for inboard and outboard sidesill supports, centersill supports, and the interface with existing undercar structural elements.
The technical drawings specify fabrication requirements for supports, including using 4"x4"x0.375" ASTM A36 angle steel, with notching and fitting instructions for precise alignment with existing rail car structures. The design emphasizes contractor verification of fit and placement prior to final installation, with multiple views (top, front, left, right) and detailed scale sections showing connection points and structural modifications. The drawings are dated 8/22/2025, drawn by CDL, and approved by ARRC engineering services, indicating a forward-looking infrastructure upgrade project for the Alaska Railroad's passenger coach fleet.
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Text version
PROJECT
TITLE
DRAWN
CHECKED
APPROVED SCALE
DATE
SHEET
MOTIVE POWER AND EQUIPMENT
PASSENGER COACHES
ALASKA RAILROAD
CORPORATION
ENGINEERING SERVICES
1/3 1:20
8/22/2025CDL
ARRC
ARRC
GENERAL ARRANGEMENT
ARR 551-554 UNDER CAR HVAC SUPPORT
EXISTING UNDERCAR
BOW AND VERTICAL
SUPPORTS
ARRC PROVIDED HVAC SUBFRAME
CONTRACTOR SUPPLIED
INBOARD CENTERSILL
SUPPORT
CONTRACTOR SUPPLIED
OUTBOARD SIDESILL
SUPPORT
EXISTING CAR SIDESILL
EXISTING CAR CENTERSILL
DRAWN
CHECKED
APPROVED SCALE
DATE
SHEET
MOTIVE POWER AND EQUIPMENT
PASSENGER COACHES
ALASKA RAILROAD
CORPORATION
ENGINEERING SERVICES
2/3 1:20
8/22/2025CDL
ARRC
ARRC
ARRC PROVIDED HVAC SUBFRAME
ARR 551-554 UNDER CAR HVAC SUPPORT
FIELD NOTCH ARRC PROVIDED
HVAC SUBFRAME RAILS TO
EXISTING UNDERCAR BOW AND
VERTICAL SUPPORTS, TYP OF 3 E
DETAIL E
SCALE 1:5
1.5
F
DETAIL F
SCALE 1:5
1.5
TRIM FRONT EDGE OF
TUBING 0.5" BACK FROM
FRONT OF EXISTING BOW
2"x4"x0.25" HORIZONTAL RAILS, 2 PLCS
1"x2" & 1"x3" SUBFRAM CAGE
WITH PNEUMA SEAL PLATES
TOP VIEW
FRONT VIEWLEFT VIEW RIGHT VIEW
NOTES:
1. CONTRACTOR TO VERIFY FIT AND PLACEMENT OF ARRC
PROVIDED HVAC SUBFRAME PRIOR TO FINAL INSTALLATION.
DRAWN
CHECKED
APPROVED SCALE
DATE
SHEET
MOTIVE POWER AND EQUIPMENT
PASSENGER COACHES
ALASKA RAILROAD
CORPORATION
ENGINEERING SERVICES
3/3 1:20
8/22/2025CDL
ARRC
ARRC
CONTRACTOR SUPPLIED SUPPORTS & INSTALL
ARR 551-554 UNDER CAR HVAC SUPPORT
AA
SECTION A-A
B B
SECTION B-B (ROTATED)
SCALE 1:40
C
DETAIL C
SCALE 1:5
D
DETAIL D
SCALE 1:5
TOP VIEW
SCALE 1:40
EXISTING CENTERSILL
EXISTING SIDESILL
1/8
45°
INBOARD CENTERSILL SUPPORT
FABRICATE FROM 4"x4"x0.375"
ASTM A36 ANGLE
L PER FIELD MEASUREMENTS
NOTCH FOR TIGHT
FIT TO LOWER
CENTERSILL
FLANGE
1.75
L OUTBOARD SIDESILL SUPPORT
FABRICATE FROM 4"x4"x0.375"
ASTM A36 ANGLE
L PER FIELD MEASUREMENTS
L
1.75
1/8
45°
1/8
45°
TYP
5/16
NOTCH FOR
HORIZONTAL
HVAC RAIL, TYP
NOTE:
UPPER HVAC SUBFRAME
AND SEAL PLATES OMITTED
FOR CLARITY.
G
DETAIL G
TYPICAL SUBFRAME TO
EXISTING STRUCTURE
CONNECTION
1/8
45°
TYP
ARRC SUPPLIED HVAC
SUBFRAME RAIL
| Sheets and Views |
| Sheet1 |
| Sheet2 |
| Sheet3 |
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