4. Project Drawings - Revised.pdf

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Attached to
127EAW23R0066 - Janes Reservoir Dam Repairs
Solicitation number
127EAW23R0066
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About this file

This document contains project drawings and details for repairs to the Janes Reservoir Dam outfall pipe and valve. The drawings depict the existing conditions including a hole in the pipe, severe corrosion of the valve frame, and proposed repair steps. The repairs include excavating to uncover the damaged pipe, removing the old pipe and downstream valve, installing a replacement pipe with thermal blankets and epoxy anchors, and backfilling. Related to this is a federal contract opportunity from the USDA Forest Service for solicitation number 127EAW23R0066 concerning repairs to Janes Reservoir Dam. The opportunity type is a solicitation and the agency is the Department of Agriculture Forest Service.

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File Type Posted
5. Davis-Bacon Act WD # CA20230007.pdf PDF
7. Supplemental Specifications.pdf PDF
2. Schedule.docx DOCX document
1. Statement of Work.pdf PDF
3. Location Map.pdf PDF
6. RFI Form.docx DOCX document
127EAW23R0066 - Janes Reservoir Dam Repairs.pdf PDF

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Text version

O utfall pipe failure near valve. Patch pipe prior to installation of pipe. U se dow nstream end to develop pattern. B ackfill and com pact any voids. Sacrete or flow able fill m ight be utilized if erosion is contained to area around intake.

R epair/replace valve as required.

Rem ove dow nstream valve

C ontrol Stem

110 feet

20 feet

20 feet front ation

Severe corrosion of passive reac tion fram e to counter control rod load.

- JANES RESERVOIR DAM OUTFALL REPAIRS

GENERAL DETAILS

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- JANES RESERVOIR DAM OUTFALL REPAIRS

TEMPORARY REPAIR GENERAL DETAILS

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H ole in pipe

V alve G uide

F low P a t h

F low path around pipe joint

D am

F ace

C urrent C onditions

Rem ove and dispose of old pipe and dow nstream valve

Step 1 - E xcavate T rench to U ncover Pipe

Step 2 - R em ove O ld Pipe

C lean and sandblast concrete surface up to the valve face

X

Step 3 - Install R eplacem ent Pipe Step 4 - A ttach Pipe

T herm al Blanket

D rill pipe and concrete to receive anchors using right angle SD S attachm ent. M inim um depth into concrete shall be 1.5 inches.

D rill holes 1 inch from end of pipe

L iberally place Set 3G

E poxy or equivalent in joint betw een pipe and concrete. Place screw anchors and torque follow ing m anufacturers recom m endations. U se Tapcon countersunk screw s and w ashers - or equivalent - w ith m axim um 4 inch center to center spacing. A nchor length w ill vary depending on field conditions. Place therm al blankets to m aintain tem p at approxim ately 70 degrees F m inim um during set.

Block pipe to prevent cold air from reaching epoxy.

T apcon countersunk screw anchors w ith countersunk w ashers

T em porary blockage to prevent convective heat im pacts to epoxy Rem ove excess epoxy

Step 5 - R eplace E xcavated M aterial

Janes Flatt Outfall Layout And Prep.pdf
Pipe prep and CIPP install v2.pdf

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