Gavins_TailraceBulkhead_Photos and drawings.pdf

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Gavins Point Tailrace Bulkheads
Solicitation number
W9128F22R0011
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This document announces a federal solicitation for fabrication of new tailrace bulkheads at Gavins Point Dam in Crofton, Nebraska. The U.S. Army Corps of Engineers, Omaha District is seeking bids for furnishing all labor, materials, equipment and supervision required to fabricate six new draft tube bulkheads, including new rubber seals to replace existing bulkheads. Bids are due by June 27, 2022. The estimated construction cost is between $1,000,000 to $5,000,000. The project is restricted to small businesses classified under NAICS code 237990 with a size standard of $39.5 million. The awarded contractor must field verify dimensions, perform functionality and water tightness testing, provide inspection reports and as-built drawings, and complete work within 480 days of receiving notice to proceed. The place of performance is Gavins Point Dam in Crofton, Nebraska.

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Text version

116'-5"

138'-0" 21'-7"

26'-0"

19'-0"

12'-6"

32'-7"

P O

W E

R P

L A

N T

E N

T R

A N

C E

CANOPY

16' X 46'

STRUCTURE

POWER PLANT

EXTENSION

SUBSTRUCTURE

EDGE POWERHOUSE

FLAG POLE

"EXPANSION JOINT FILLER4

6" X 6" WIRE MESH

AN EXPOSED AGGERGATE FINISH

SIDEWALK SURFACE SHALL HAVE

SECTION G-G

6"

1'

4"

OMPUTER

IDED

ESIGN &

RAFTING

$$ - THINK VALUE ENGINEERING - $$

Revisions

DescriptionsSymbol Date Approved

U.S. ARMY ENGINEER DISTRICT

CORPS OF ENGINEERS

OMAHA, NEBRASKA

Designed by:

Drawn by:

Checked by:

Reviewed by:

Submitted by:

Chief: Section

Scale:

As Shown

Spec. No.:

DACW 45

Contract No.:

Drawing Code:

Design File:

Plot Scale Ratio:C

A D

D

A

Date:

B

D

C

14 3 25

D

C

B

A

5 4 3 2

GAVINS POINT PROJECT

06-10-2022

WITH 6" X 6" WIRE MESH

SIDEWALK AREA TO BE REINFORCED

EXPOSED AGGREGATE FINISH

DENOTES NEW SIDEWALK AREA W/

DRAINS REMAIN IN PLACE

ALL EXISTING GRATES AND

POWER PLANT ENTRANCE REHAB

ON CHAIRS

BE REINFORCED WITH 6"X6" WIRE MESH

PARKING AND DRIVEWAY AREA TO

6" MIN.COMPACTED GRAVEL FILL

6"

Gate off the Intake Deck Top of rail is 19'-6"

42" tall Steel Rail

Stairway

View West into Powerhouse parking lot

Gate opening is 17 feet wide

Tailrace Gantry Crane to the right

View Northeast toward Visitor Awning. Gantry Crane and bulkheads are to the left of the photo.

Parking lot gate is shown on the right side of the photo

View north towards Tailrace Gantry Crane from corner of powerhouse parking area.

Awning on right is ~9 feet high.

Second photo showing view from concrete lot towards Tailrace Deck.

Visitor awning or right is 9 feet tall

View of Tailrace Deck, Tailrace Bulkhead Slots and Gantry Crane (on right)

Tailrace Deck (El 1179) is 16‘ below parking lot elevation (El 1195’)

View south from Tailrace Deck to parking area.

Powerhouse on right of photo.

South end of Tailrace Deck. Vertical wall on right is north side of parking area.

Powerhouse is behind camera man.

Structure at back of photo is the Gantry Crane.

Photo showing two foot distance from end of stoplog slot to the vertical wall at south end of Tailrace Deck

View north.

Looking down from parking area to Tailrace deck.

Photo of Gantry Crane towards parking lot (south) lifting out Bulkhead Slot

Cover.

View of Tailrace Bulkhead Dogging Device

View of Bulkhead raised by Gantry Crane

Close up view of bulkhead out of slot

View of downstream side of bulkhead while hoisted by Gantry Crane

View of Tailrace Bulkhead hooks with Lifting Beam connection

File details come from the government source that posted it. Updated .