A.02 PD - ATTACHMENT 002 - Replacement Tracks Drawings.pdf
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- Attached to
- John Day Dam STS Roller Chain Replaceable Track
- Solicitation number
- W9127N26QA072
About this file
This is an engineering drawing document for replaceable track assemblies for submerged traveling screens (STS) at John Day Lock and Dam on the Columbia River in Washington. The document is prepared by the Portland District of the U.S. Army Corps of Engineers and contains detailed technical specifications and mechanical drawings.
The document specifies six replaceable track components divided into two complete track assemblies: the 25-3 Replaceable Track (items 1-3 comprising bottom, middle, and top sections) and the 25-4 Replaceable Track (items 4-6 comprising bottom, middle, and top sections). Two units of each track type are required for the upstream side of the STS. The drawings provide comprehensive specifications including precise dimensions in inches, cross-sectional details, rotation angles, and hole patterns (with spacing notation of 6-7 spaces at 9-inch intervals). Key dimensional details include track lengths ranging from approximately 57 to 74 inches, various slot widths (.180-.813 inches), and specific angle cuts (15°, 30°, 45°). The document was designed by Adrian Mariscal Arellano and drawn in Inventor (Replaceable Tracks.idw), with a plot date of December 5, 2025, and references contract number CENWP-ODJ at John Day Engineering in Rufus, Oregon. The drawings are presented at 1/2 scale with ANSI-D size specifications across eight detailed sheets (M-001 through M-106).
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PARTS LIST
DESCRIPTIONPART NUMBERQTYITEM
Bottom Section 25-3 Replaceable Tracks (1)11
Middle Section25-3 Replaceable Tracks (2)12
Top Section 25-3 Replaceable Tracks (3)13
Bottom Section 25-4 Replaceable Tracks (4)14
Middle Section 25-4 Replaceable Tracks (5)15
Top Section 25-4 Replaceable Tracks (6)16
US Army Corps of Engineers
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R E P L A C E A B L E
T R A C K S
T R A C K S
A S S E M
B L E D
Rotation of Screen
1 2 3
4 5 6
*NOTE: Sections 25-3 Replaceable Tracks (1) - 25-3 Replaceable Tracks (3) make one complete Replaceable Track.
There is two of these Tracks per STS. Likewise 25-4 Replaceable Tracks (4) - 25-4 Replaceable Tracks (6) make up another complete Replaceable Track. There is also two of these Replaceable Tracks on the STS. These tracks are only for the upstream side of the the STS.
Top side of STS
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57.250
55.250
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45.0005 spaces @9" =
.750
15°
1.866 n1.313 x .280
3.750
30°
.180
.280
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