A06_Drawings_Fort_Howes_Water_Storage_Tank_Replacement.pdf
PDF 3 MB Posted
- Attached to
- FORT HOWES WATER STORAGE TANK Federal contract opportunity
- Solicitation number
- 140L3626Q0032
About this file
This document is a set of technical construction drawings and specifications for the Fort Howes Water Storage Tank Replacement project managed by the Bureau of Land Management's Eastern Montana Dakotas District Office in Fort Howes, Montana.
The project involves the demolition of an existing 19,000-gallon concrete water storage cistern and installation of a new 20,000-gallon reinforced fiberglass construction (FRP) water storage tank. Key construction requirements include: replacement of existing water supply and drain piping with new PVC lines; installation of new gate valves, frost-free hydrants, and check valves; trenching to a minimum depth of 6.0 feet with specified backfill materials and compaction standards; installation of geotextile fabric and stone bedding layers around the tank; pressure testing and disinfection of all new waterline piping per AWWA standards; and compliance with OSHA excavation requirements (1926.651). The new tank specifications require NSF-approved fittings, a Xerxes single-wall FRP tank design with precast deadman hold-down strap system, 30-inch manway access with hinged lockable cover, NSF-approved tangential nozzles for inlet and drain outlets, and a vent pipe with bug screen. The contractor must use manufacture-certified installers and submit test reports for soil compaction, tank pressure tests, and material certifications to the contracting office. The project drawings include site schematics, demolition plans, tank profile details, thrust block requirements, gate valve assembly details, standard utility trench specifications, and deadman installation dimensions specific to a 10-foot diameter tank.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Sol_140L3626Q0032_Amd_0001.pdf | ||
| B09_Amended_Solicitation_0001_0001.pdf | ||
| Bid_Schedule_Fort_Howes_Water_Storage_Tank_Replacement.pdf | ||
| B03_WD_MT20260076_Dated_5_18_2026.pdf | ||
| Sol_140L3626Q0032.pdf | ||
| A06_Specfications_Fort_Howes_Water_Storage_Tank_Replacement.pdf |
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Text version
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GENERAL NOTES:
1. ALL EXCAVATIONS ARE TO
FOLLOW OSHA 1926.651.
2. INSTALL WATER STORAGE
TANK PER MANUFACTURE
INSTRUCTIONS AND THE
ADDITIONAL BACKFILL
REQUIREMENTS IN THE
CONSTRUCTION DRAWINGS.
3. TEST WATER STORAGE TANK
PER MANUFACTURE
INSTRUCTIONS.
4. SUBMIT ALL TEST REPORTS
FOR SOIL COMPACTION, TANK
PRESSURE TEST, MATERIAL
CERTIFICATIONS FOR THE
BACKFILL TO THE
CONTRACTING OFFICE.
5. INSTALLATION TO BE
PERFORMED BY
MANUFACTURE CERTIFIED
INSTALLERS.
BACKFILL REQUIREMENTS:
1. INSTALL A GEOTEXTILE MATERIAL AT THE PERIMETER INTERFACE OF THE NATIVE SOIL AND BETWEEN THE
PRIMARY AND SECONDARY BACKFILL LAYERS THAT MEETS THE FOLLOWING: 100% POLYPROPYLENE STABLE
FIBER, NEEDLE-PUNCHED, WEIGHT 3.5 OUNCES PER SQUARE YARD.
2. OVERLAP ALL GEOTEXTILE SEAMS A MINIMUM OF 12 INCHES.
3. PRIMARY BACKFILL AND BASE COURSE (BEDDING LAYER)- USE COURSE AGGREGATE AS BACKFILL
4. PRIMARY BACKFILL MATERIAL SHOULD BE A MIX OF WELL-GRADED STONES, CONFORMING TO THE 6,67,7 AND 8
SIZES OF ASTM C33.
5. PRIMARY BACKFILL, NO MORE THAN 5% OF MATERIAL CAN PASS THROUGH THE #8 SIEVE.
6. COMPACT PRIMARY BACKFILL USING 3 PASSES WITH VIBRATORY EQUIPMENT IN 12" LIFTS .
7. SECONDARY BACKFILL - COMPACT TO ACHIEVE A MINIMUM OF 90% STANDARD PROCTOR DENSITY.
8. SECONDARY BACKFILL- 100% OF THE MATERIAL TO PASS THROUGH A 1-INCH SIEVE.
9. SECONDARY BACKFILL - INSTALL IN 12" LIFTS.
10. RESEED DAMAGED SURFACE AREA VEGETATION WITH NATIVE GRASS MIXES, PROTECT AREA AND WATER UNTIL
SEED GERMINATES.
11. DO NOT ALLOW BACKFILL TO FALL FROM EQUIPMENT MORE THAN 2-3 FEET TO PROTECT TANK.
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DEADMAN INSTALLATION DIMENSIONS FOR A 10 FOOT DIAMETER 20,000 GALLON TANK.
1. A -STRAP EYE TO ANCHOR POINT - 38 INCHES
2. B - ALTERNATE DIMENSION - 26 INCHES - REQUIRES PRE APPROVAL BY BUREAU OF LAND MANAGEMENT
ENGINEERING
3. C- STRAP LENGTH -236 INCHES
4. D - CENTER OF TANK TO CENTER OF DEADMAN - 70 INCHES..
5. INSTALL MANUFACTURE'S DEADMAN SYSTEM IN BASE LAYER.
6. ALL ANCHORING CABLES AND COMPONENTS TO BE HOT DIPPED GALVANIZED.
7. FOLLOW MANUFACTURE'S INSTRUCTIONS FOR TERMINATING THE CABLES TO THE DEADMAN.
8. DEADMAN SYSTEM SUPPLIED BY THE MANUFACTURE OF THE WATER STORAGE TANK.
| COVER SHEET 040826 |
| EXISTING SITE 040826 |
| ENLARGED EXISTING SITE SCHEMATIC 040826 |
| SITE PLAN 040826 |
| DETAILS 040826 |
| WATER STORAGE TANK 040826 |
| TANK INSTALLATION 040826 |
| Sheets and Views |
| 11X17 |
| TANK INSTALLATION DEADMAN 040826 |
| Sheets and Views |
| 11X17 |
| 2026-04-09T11:07:55-0600 | |
| DAVID ROBERTS |
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