A3_LiftingBeamMods_DemoDrawings_FINAL.pdf

PDF 255 KB Posted Aug 10, 2026

Attached to: STOPLOG LIFTING BEAM MODIFICATION PROJECT - Colora
Solicitation number: 140A1126R0012
Issued by: Department of the Interior Bureau of Indian Affairs Western Region

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Written by GovTribe AI · Aug 10, 2026

These are engineering fabrication drawings for lifting beam guide components and related assemblies for the BIA Colorado River Irrigation Project at Headgate Rock Dam. The drawings, prepared by USS Underwater Screening Services and DOWL Engineering, detail proposed modifications (Modification 14) to the original stoplog lift beam as part of rehabilitation work on the main canal structures under Contract 140A1218D0013/140A1622F0021, with an anticipated completion date of March 2026.

The modification involves removing the existing end guide assemblies at both ends of the lift beam, shortening the C15 channel pair length from 20'-7" to 19'-5", and reconstructing new end guide assemblies per the provided fabrication details. The key fabrication components specified include ASTM A36 steel materials for five items comprising the end guide assembly: a cap plate (33 lbs), two cut plates (12 lbs and 19 lbs), a bent plate (11 lbs), and top/bottom plates (11 lbs total); a C15x33.9 channel (667 lbs estimated weight); and the complete lifting beam assembly (2,100 lbs estimated weight). All welding must conform to AWS D01.1 standards, with dimensional tolerances of ±0.010" for two-place decimals, ±0.005" for three-place decimals, and ±0.015" for fractions. The interior of the lift beam remains unchanged, with fabrication marked in red indicating proposed modifications from the original design.

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UNDERWATER SCREENING SERVICES

1-888-296-1920 FORTY-FORT, PA

USS

A REVISED FOR RESUBMITTAL BSB 5-2-19

X. ALL WELDING TO AWS D01.1 UNLESS NOTED OTHERWISE.

X. ALL DRYSEAL PIPE THREADS ARE TO ANSI/ASME B1.20.3-1976 (R2003) UNLESS NOTED OTHERWISE.

X. ALL PIPE THREADS ARE TO ANSI/ASME B1.20.1-1983 (R2006) UNLESS NOTED OTHERWISE.

X. KEY SLOTS ARE TO ANSI B17.1-1967(1998).

X. ALL MACHINED FASTENER THREADS ARE TO ANSI B1.1-2003 UNLESS NOTED OTHERWISE.

13 24

3-12-19

DATE

BSB

INITIAL RELEASE

REVISIONNO.

CONSTRUCTION OR INSPECTION PURPOSES.

5. ALL DIMENSION IN PARENTHESES ( ) ARE REFERENCE ONLY AND NOT FOR

4. BREAK ALL SHARP EDGES AND CORNERS.

ALL DIMENSIONS ARE IN FEET AND/OR INCHES UNLESS INDICATED OTHERWISE.

BY MANUAL METHODS.

EXPRESS CONDITION THAT IT IS NOT TO BE USED DIRECTLY OR

INDIRECTLY IN ANY WAY DETRIMENTAL TO USS'S INTERESTS.

THIS PRINT IS LOANED SUBJECT TO RETURN UPON DEMAND & UPON THE

THIS IS A COMPUTER GENERATED DRAWING AND IS NOT TO BE REVISED

NOTES:

BIA COLORADO RIVER

APPROVED BY:

REV.:

10-B-11262

LIFTING BEAM GUIDE COMPONENTS

DRAWN BY:

DRAWING NO.:

DATE:

TITLE:

SCALE:

BSB5-2-191:18

REF 10-C-11258 Section E-E For Fabrication Details

1 8

" R

13 16

1 8

6 5

8 " REF

1 13

16 " REF

1 13

16 " REF

10 1 4 "

2 "

TYP BEND

5 7 8 "

4 1 8 "

1 3 4 " 6 15

16 " 8 11

16 "

1 3 4 "

12 5 16 "

8 25 32 "

3 17 32 "

8 "

DIMENSIONAL TOLERANCES (UNLESS OTHERWISE NOTED)

2-PLACE 0.010

3-PLACE 0.005

FRACTION 0.015

ITEM 5: TOP & BOTTOM PLATE

NOTE:

1.) Material: ASTM A36 2.) Est. Weight: 11 lbs 3.) REF Lifting Beam DWG # 10-C-11258 4.) Cut to Suit Assembly REF 10-C-11258 SECTION E-E

ITEM 4: BENT PLATE B

NOTE:

1.) Material: ASTM A36 2.) Est. Weight: 11 lbs 3.) REF Lifting Beam DWG # 10-C-11258 4.) Cut to Suit Assembly REF 10-C-11258 SECTION E-E

ITEM 3: CUT PLATE B

NOTE:

1.) Material: ASTM A36 2.) Est. Weight: 19 lbs 3.) REF Lifting Beam DWG # 10-C-11258 4.) Cut to Suit Assembly REF 10-C-11258 SECTION E-E

ITEM 2: CUT PLATE A

NOTE:

1.) Material: ASTM A36 2.) Est. Weight: 12 lbs 3.) REF Lifting Beam DWG # 10-C-11258 4.) Cut to Suit Assembly REF 10-C-11258 SECTION E-E

ITEM 1: CAP PLATE

NOTE:

1.) Material: ASTM A36 2.) Est. Weight: 33 lbs 3.) REF Lifting Beam DWG # 10-C-11258 4.) Cut to Suit Assembly REF 10-C-11258 SECTION E-E

ITEM NO. PART DESCRIPTION QTY

1 Cap Plate 24" x 10-1/4" x 1/2"

A36 Plate 1 2 Cut Plate A 3/8" A36 Bar 1 3 Cut Plate B 3/8" A36 Bar 1 4 Bent Plate 3/8" A36 Bar 1 5 Top Plate 6" x 3/8" A36 Bar 2

PROPOSED MODIFICATIONS TO THE ORIGINAL STOPLOG LIFT BEAM

FABRICATION MARKED IN RED

COLORADO RIVER IRRIGATION PROJECT, HEADGATE ROCK DAM

REHABILITATION OF MAIN CANAL STRUCTURES, MODIFICATION 14

CONTRACT 140A1218D0013/140A1622F0021

MARCH 2026

DOWL PROJECT NO. 4626.12494.01 - MOD 14

REMOVE THIS ENTIRE BEAM END GUIDE

ASSEMBLY - BOTH ENDS

TAKE CARE NOT TO SACRIFICE C15

CHANNEL MATERIAL

FINAL

USS

A REVISED FOR RESUBMITTAL BSB 5-2-19

X. ALL WELDING TO AWS D01.1 UNLESS NOTED OTHERWISE.

X. ALL DRYSEAL PIPE THREADS ARE TO ANSI/ASME B1.20.3-1976 (R2003) UNLESS NOTED OTHERWISE.

X. ALL PIPE THREADS ARE TO ANSI/ASME B1.20.1-1983 (R2006) UNLESS NOTED OTHERWISE.

X. KEY SLOTS ARE TO ANSI B17.1-1967(1998).

X. ALL MACHINED FASTENER THREADS ARE TO ANSI B1.1-2003 UNLESS NOTED OTHERWISE.

13 24

3-12-19

DATE

BSB

INITIAL RELEASE

REVISIONNO.

CONSTRUCTION OR INSPECTION PURPOSES.

5. ALL DIMENSION IN PARENTHESES ( ) ARE REFERENCE ONLY AND NOT FOR

4. BREAK ALL SHARP EDGES AND CORNERS.

ALL DIMENSIONS ARE IN FEET AND/OR INCHES UNLESS INDICATED OTHERWISE.

BY MANUAL METHODS.

EXPRESS CONDITION THAT IT IS NOT TO BE USED DIRECTLY OR

INDIRECTLY IN ANY WAY DETRIMENTAL TO USS'S INTERESTS.

THIS PRINT IS LOANED SUBJECT TO RETURN UPON DEMAND & UPON THE

THIS IS A COMPUTER GENERATED DRAWING AND IS NOT TO BE REVISED

NOTES:

BIA COLORADO RIVER

APPROVED BY:

REV.:

10-B-11266

LIFTING BEAM C CHANNEL

DRAWN BY:

DRAWING NO.:

DATE:

TITLE:

SCALE:

BSB5-2-191:12

3.40

REF

0.40

REF

19'-10"

1 2

38" 38"

4" 4"

4 1 2 "

2 1 4 "

1 3364 "

1/2-13 UNC - 2B

1 2 " 23 3

4 " 3" 53 3

4 " 3"

Notes:

1.) C15 x 33.9# C Channel 2.) Material: ASTM A36 3.) Est. Weight: 667 lbs

FABRICATION NOTES:

A.) Welding Symbols apply to the joints of all members of similar identification B.) All fillet welds shall be returned

DIMENSIONAL TOLERANCES (UNLESS OTHERWISE NOTED)

2-PLACE 0.010

3-PLACE 0.005

FRACTION 0.015

LIFT BEAM MODIFICATION SUMMARY:

- REMOVE END GUIDE ASSEMBLY, BOTH ENDS

- SHORTEN C15 CHANNEL PAIR LENGTH

- RECONSTRUCT END GUIDE ASSEMBLY

EACH END PER MODIFICATION DETAILS

- NO CHANGE TO BEAM "INTERIOR"

SHORTEN C15 CHANNEL PAIR LENGTH TO 19'-5" -

SYMETRICAL ABOUT THE LIFT BEAM CENTERLINE

CL LIFT BEAM (SYM)

LIFT BEAM INTERIOR - NO CHANGE

C15x33.9 CHANNEL

C15x33.9

PROPOSED MODIFICATIONS TO THE ORIGINAL STOPLOG LIFT

BEAM FABRICATION MARKED IN RED

MARCH 2026

DOWL PROJECT NO. 4626.12494.01 - MOD 14

USS

A REVISED FOR RESUBMITTAL BSB 5-2-19

X. ALL WELDING TO AWS D01.1 UNLESS NOTED OTHERWISE.

X. ALL DRYSEAL PIPE THREADS ARE TO ANSI/ASME B1.20.3-1976 (R2003) UNLESS NOTED OTHERWISE.

X. ALL PIPE THREADS ARE TO ANSI/ASME B1.20.1-1983 (R2006) UNLESS NOTED OTHERWISE.

X. KEY SLOTS ARE TO ANSI B17.1-1967(1998).

X. ALL MACHINED FASTENER THREADS ARE TO ANSI B1.1-2003 UNLESS NOTED OTHERWISE.

13 24

3-12-19

DATE

BSB

INITIAL RELEASE

REVISIONNO.

CONSTRUCTION OR INSPECTION PURPOSES.

5. ALL DIMENSION IN PARENTHESES ( ) ARE REFERENCE ONLY AND NOT FOR

4. BREAK ALL SHARP EDGES AND CORNERS.

ALL DIMENSIONS ARE IN FEET AND/OR INCHES UNLESS INDICATED OTHERWISE.

BY MANUAL METHODS.

EXPRESS CONDITION THAT IT IS NOT TO BE USED DIRECTLY OR

INDIRECTLY IN ANY WAY DETRIMENTAL TO USS'S INTERESTS.

THIS PRINT IS LOANED SUBJECT TO RETURN UPON DEMAND & UPON THE

THIS IS A COMPUTER GENERATED DRAWING AND IS NOT TO BE REVISED

NOTES:

BIA COLORADO RIVER

APPROVED BY:

REV.:

10-C-11258

LIFTING BEAM ASSEMBLY

DRAWN BY:

DRAWING NO.:

DATE:

TITLE:

SCALE:

BSB5-2-191:18

14'-0"

20'-7"

16'-8" Dowel Hole CL

1 1 2 "

2 1 4 "

11 1 4 "

6'-4" Hook CL

Provide 12 ga. brass plate on opposite side of beam with stamped or etched 1" high letters.

Fill letters with black paint. Fasten Plate with (x6) brass 1/4" socket head cap screws

Sling Note:

1.) Upper Link 1-1/4" Stock

Wire Rope Note:

1.) 3/4" wire rope, 6 x 19 with IWRC improved plow steel

Open swage socket with 1-1/2" jaw opening and 1-3/8" pin

7 3 4 "

11"

4" AA

Symmetrical About CL

1/4

DIMENSIONAL TOLERANCES (UNLESS OTHERWISE NOTED)

2-PLACE 0.010

3-PLACE 0.005

FRACTION 0.015

FABRICATION NOTES:

A.) Welding Symbols apply to the joints of all members of similar identification B.) All fillet welds shall be returned C.) At Assembly, coat threads of all stainless steel fasteners with a suitable commercial grade, lead free, anti seize compound

Notes:

1.) REF Upper Stop Log DWG # 10-C-11244/10-C-11245 2.) REF Lower Stop Log DWF # 10-C-11298/10-C-11299 3.) Est. Weight: 2100 lbs

ITEM NO. PART DWG NO. DESCRIPTION Material QTY 1 C Channel 10-B-11266 C15" x 33.9# x 238" ASTM A36 2 2 Lifting Plate Assembly 10-B-11264 Fabricated Plate Assembly ASTM A36 2 3 End Guide Assembly 10-B-11262 Fabricated Plate Assembly ASTM A36 2 4 6x9 Bar 10-B-11263 6" x 9" x 3/8" Bar ASTM A36 2 5 Pin Keeper 10-B-11263 2" x 10" x 1/4" Plate ASTM A36 4 6 Pin 10-B-11263 1-1/2" x 7-5/8" CF Steel 7 Hook Stop 10-B-11263 11" x 5" x 3/8" Bar ASTM A36 4

8 Dowell Retainer 10-B-11265 4-1/2" OD x 1" Wall x 20" Steel Tubing ASTM A36 2

9 Dowell Retainer Mounting Plate 10-B-11265 9" x 6" x 3/8" Bar ASTM A36 4

10 Sling N/A 1-1/4" Upper Link stock diameter, 3/4 wire rope with IWRC improved steel and open swae socket" 1

11 Hook Stop Washers N/A Beveled Washer for 1/2" Bolt Stainless Steel

12 Hook Stop Mounting N/A 1/2"-13 UNC - 2A x 2" Hex Head Bolt & Hex Nuts Stainless Steel 8 13 Pin Stop Mounting N/A 1/2" - 13 UNC - 2A x 1-1/2" Hex Head Cap Screw Stainless Steel 12

14 Hook Assembly 10-C-11261 Fabricated Assembly ASTM A36 and Bronze 2

15 Tag Line N/A 1000# min. breaking strength, 40' long (not shown) Dacron 2

REMOVE END GUIDE ASSEMBLY - BOTH ENDS.

FOR PROPOSED END GUIDE MODIFICATIONS,

SEE DOWL DRAWING NO. XX

DECEMBER 2025

Notch Guide

Wall Guide

SHORTEN C15 CHANNEL PAIR LENGTH

LIFT BEAM INTERIOR - NO CHANGE

C15x33.9 CHANNEL PAIR

19'-5"

9'-8 1/2" 9'-8 1/2"

PROPOSED MODIFICATIONS TO THE ORIGINAL STOPLOG LIFT

BEAM FABRICATION MARKED IN RED

MARCH 2026

USS

A REVISED FOR RESUBMITTAL BSB 5-2-19

X. ALL WELDING TO AWS D01.1 UNLESS NOTED OTHERWISE.

X. ALL DRYSEAL PIPE THREADS ARE TO ANSI/ASME B1.20.3-1976 (R2003) UNLESS NOTED OTHERWISE.

X. ALL PIPE THREADS ARE TO ANSI/ASME B1.20.1-1983 (R2006) UNLESS NOTED OTHERWISE.

X. KEY SLOTS ARE TO ANSI B17.1-1967(1998).

X. ALL MACHINED FASTENER THREADS ARE TO ANSI B1.1-2003 UNLESS NOTED OTHERWISE.

13 24

3-12-19

DATE

BSB

INITIAL RELEASE

REVISIONNO.

CONSTRUCTION OR INSPECTION PURPOSES.

5. ALL DIMENSION IN PARENTHESES ( ) ARE REFERENCE ONLY AND NOT FOR

4. BREAK ALL SHARP EDGES AND CORNERS.

ALL DIMENSIONS ARE IN FEET AND/OR INCHES UNLESS INDICATED OTHERWISE.

BY MANUAL METHODS.

EXPRESS CONDITION THAT IT IS NOT TO BE USED DIRECTLY OR

INDIRECTLY IN ANY WAY DETRIMENTAL TO USS'S INTERESTS.

THIS PRINT IS LOANED SUBJECT TO RETURN UPON DEMAND & UPON THE

THIS IS A COMPUTER GENERATED DRAWING AND IS NOT TO BE REVISED

NOTES:

BIA COLORADO RIVER

APPROVED BY:

REV.:

10-C-11258

LIFTING BEAM ASSEMBLY

DRAWN BY:

DRAWING NO.:

DATE:

TITLE:

SCALE:

BSB5-2-191:18

1" 1"

SECTION A-A

3/16

4 1 4 "

1'-8"

3" 4 1

2 "

4 1 2 "

1 1 2 "

4 1 4 "

SECTION B-B

Dowell Retainer Section View

5/16

8 "

2 "

2" 4 "

1 3 8 "

13"

SECTION C-C

Lifting Plate Section View

3/8" Plate Cut to suit

3/16

4 1 2 "

2 "

1 1 2 "

1 33 64 "

Bore In Line

SECTION D-D

Hook Retainer Section View

Drill & Tap 1/2" - 13 2B THRU

9/16"

5/16

3" 3" 24"

5 1 2 "

7" 12"

SECTION E-E

End Guide View

SECTION E-E Side View End Guide View

SECTION E-E Top View End Guide View

3/16 3/16

6 1 2 "

11"

7 3 4 "

2 "

3/16 3/16

TOP AND

BOTTOM

3/16

4 1 8 " 3/16

DIMENSIONAL TOLERANCES (UNLESS OTHERWISE NOTED)

2-PLACE 0.010

3-PLACE 0.005

FRACTION 0.015

FABRICATION NOTES:

A.) Welding Symbols apply to the joints of all members of similar identification B.) All fillet welds shall be returned

LIFT BEAM INTERIOR - NO CHANGE

REMOVE END GUIDE ASSEMBLY - BOTH ENDS

NO CHANGE

PROPOSED MODIFICATIONS TO THE ORIGINAL STOPLOG LIFT

BEAM FABRICATION MARKED IN RED

MARCH 2026

File details come from the government source that posted it. Updated Aug 10, 2026.