33 05 05.36 - Vacuum Testing.pdf
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- Attached to
- Skytop Lodge Sewage Treatment Plant Improvements Project – Contract : 2026-01- Project Number 005153. 0436
- Solicitation number
- Not on record
- Issued by
- Monroe County, Pennsylvania
About this file
This is a technical specification document for vacuum testing of sewage treatment infrastructure, prepared by Herbert, Rowland & Grubic, Inc., for the Skytop Lodge Sewage Treatment Plant Improvements Project in Pennsylvania (Project Number 005153.0436). The specification establishes requirements for vacuum testing of sewage manholes following ASTM C1244 standards. The work includes testing of sewage and stormwater manholes with compression band seals, vacuum pumps, vacuum gages calibrated to 0.1 inch of mercury, and related equipment. Testing procedures, equipment lists, and testing sequence schedules must be submitted prior to initiating work. The applicator must be a company with a minimum of three years' experience in performing vacuum testing work. The project bid opening is scheduled for September 18, 2026 at 10:00 AM, with a pre-bid conference held on August 25, 2026 at 10:30 AM at the Skytop Lodge STP facility in Canadensis, Pennsylvania.
Vacuum testing must comply with specific performance standards: 4-foot diameter manholes require 60-second test duration, 5-foot diameter manholes require 75 seconds, and 6-foot diameter manholes require 90 seconds. Manholes must be drawn to 10 inches of mercury, and acceptable results require a vacuum drop of no more than 1 inch of mercury during the specified test period. Any manhole failing to meet these criteria must be repaired and retested until acceptable results are achieved. All visible leaks must be repaired regardless of leakage quantity. Bid security of 10 percent is required, with bidding documents available through the PennBid portal. Questions regarding the bidding documents must be submitted through PennBid in accordance with the Instructions to Bidders.
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Text version
33 05 05.36 - VACUUM TESTING
Herbert, Rowland & Grubic, Inc. 33 05 05.36 - 1 005153.0436
SECTION 33 05 05.36 - VACUUM TESTING
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes: Vacuum testing of manholes.
B. Related Requirements:
1. Section 33 05 61 - Concrete Manholes: Requirements for sewage and stormwater manholes.
2. Section 33 31 23 - Sanitary Sewerage Force Main Piping: Pipe materials, manholes, and accessories normally encountered with gravity sewerage piping.
1.2 REFERENCE STANDARDS
A. ASTM International:
1. ASTM C1244 - Standard Test Method for Concrete Sewer Manholes by the
Negative Air Pressure (Vacuum) Test Prior to Backfill.
1.3 SUBMITTALS
A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.
B. Submit following items prior to start of testing:
1. Testing procedures.
2. List of test equipment.
3. Testing sequence schedule.
4. Provisions for disposal of flushing and test water.
5. Certification of test gage calibration.
C. Test and Evaluation Reports: Indicate results of manhole tests.
1.4 QUALIFICATIONS
A. Applicator: Company specializing in performing Work of this Section with minimum three years' experience.
PART 2 - PRODUCTS
2.1 VACUUM TESTING
A. Equipment:
1. Vacuum pump.
2. Vacuum line.
3. Vacuum Tester Base:
a. Compression band seal.
b. Outlet port.
33 05 05.36 - VACUUM TESTING
Herbert, Rowland & Grubic, Inc. 33 05 05.36 - 2 005153.0436
4. Shutoff valve.
5. Stopwatch.
6. Plugs.
7. Vacuum Gage: Calibrated to 0.1 in. Hg.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Section 01 73 00 - Execution Requirements: Requirements for installation examination.
B. Verify that manholes are ready for testing.
C. Verify that manholes are backfilled.
3.2 FIELD QUALITY CONTROL
A. Section 01 40 00 - Quality Requirements: Requirements for inspecting and testing.
B. Manhole Testing:
1. Repair both outside and inside of joint to ensure permanent seal.
2. Test manholes with manhole frame set in place.
3. Vacuum Testing:
a. Comply with ASTM C1244.
b. Plug pipe openings; securely brace plugs and pipe.
c. Inflate compression band to create seal between vacuum base and structure.
d. Connect vacuum pump to outlet port with valve open, then draw vacuum to 10 in. Hg.
e. Close valve.
f. Manhole Test Duration in Seconds:
1) Manhole Diameter of 4 Feet: 60.
2) Manhole Diameter of 5 Feet: 75.
3) Manhole Diameter of 6 Feet: 90.
g. Record vacuum drop during test period.
h. If vacuum drop is greater than 1 in. Hg during testing period, repair and retest manhole.
i. If vacuum drop of 1 in. Hg does not occur during test period, manhole is acceptable; discontinue testing.
j. If vacuum test fails to meet 1-in. Hg drop in specified time after repair, repair and retest manhole.
4. If unsatisfactory testing results are achieved, repair manhole and retest until result meets criteria.
5. Repair visible leaks regardless of quantity of leakage.
END OF SECTION
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