Appendix A – Torque Testing to AWWA C502-05hydrantnsi.com/downloads/Torque Testing Report to...

MEMORANDUM

90 Woodlawn Road West Guelph Ontario N1H 1B2 Tel: 519-763-7774 Fax: 519-763-7757

HNSI PT Install and Testing TM 120823.docx Printed: August 23, 2012

Appendix A – Torque Testing to AWWA C502-05

May 2012

Report on Tests of Hydrant Network Solutions Inc.Data Rod Assembly for Dry-Barrel Fire Hydrants

Tested for: Hydrant Network Solutions Inc.Tested Performed by: Hydrant Network Solutions Inc., 78 Kerr Ave.

Chatham OntarioTested Witnessed by: Len Jobin, P. Eng. Structural Engineering

Hydrants tested in accordance with AWWA Standard ANSI/AWWAC502-05, “Dry-Barrel Fire Hydrants”

May 25, 2012

Report on Tests of Hydrant Network Solutions Inc.Data Rod Assembly for Dry-Barrel Fire Hydrants

Hydrant Network Solutions Inc., 78 Kerr Ave. Chatham Ontario

Hydrants tested in accordance with AWWA Standard ANSI/AWWA C502-05,“Dry-Barrel Fire Hydrants”

1. INTRODUCTION

I was retained to observe and report on testing of a prototype Dry-Barrel Fire Hydrant data rodassembly and provide a report on the findings. The testing was carried out on 24 May 2012 and thefindings are summarized in this report. The report is based strictly on visual observations of the testingas witnessed.

2. TEST APPARATUS:

The test apparatus consisted of a vertical rig supporting a fully functional dry-barrel fire hydrant,which was assembled with the Hydrant Network Solutions data rod assembly as detailed on theattached drawings SR-001 thru SR-005. A shortened hydrant bury of approximately 16” wasused for testing purposes which satisfies the AWWA C502-05 standard requirement of 5 ft. orless for bury depth.

The assembly was secured to a solid steel base anchored to the concrete floor slab. Torque wasapplied with a certified Armstrong Model 64-455A torque wrench (see attached certification ofcalibration). Calibrated : Jan. 25 2012 by Isolab Calibration Services (Windsor Ont.).

The component tested at this time was limited to the Model DR-1A Data Rod Assembly fromHydrant Network Solutions. This data rod assembly (rod assembly, probe end, tube, cap andclamp) is detailed on the attached drawings indicating dimensions and grades of steel as well asall welds and fasteners.

, P. Eng.

Report on Tests of Data Rod Assembly for Dry-Barrel Fire Hydrants 2 of 3

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3. TEST PROCEDURE:

As per the AWWA C502-05 standard this prototype required a mechanical torque test provingthe hydrant remains functional and capable of being opened or closed without difficultyfollowing application of an operating torque of 200 lb-ft force at the operating nut as follows:

In the opening direction with the hydrant fully opened

In the closing direction with the hydrant fully closed

With a hydrant bury of 5 feet or less

Before each test the torque wrench is to be set to zero.

For the first test the hydrant is to be fully opened and the torque wrench attached to the operatingnut, and cranked in the opening direction in a regular and consistent motion until a minimum of200 lb-ft torque is achieved. The fully torqued shaft is to be left in a stressed state for 5 minutesand then backed-off to release the pressure.

For the second test the hydrant is to be fully closed and the torque wrench attached to theoperating nut, and cranked in the closing direction in a regular and consistent motion until aminimum of 200 lb-ft torque is achieved. The fully torqued shaft is to be left in a stressed statefor 5 minutes and then backed-off to release the pressure.

After each test the operating nut is to be opened and closed to ensure operation without difficulty.

4. TEST RESULTS:

Both opening and closing tests were completed twice. In each case I observed the application ofthe torque up to and beyond the minimum prototype test requirement of 200 lb-ft. In each casethere was no observable stress or deformation to any component of the rod assembly or theattachments to the standard hydrant housing. The rod assembly transferred the force into theconnections and down to the base mounting with no noticeable duress.

After each test the hydrant was functional and capable of being opened and closed easily with astandard wrench by one person with no undue effort.

No deficiencies were observed.

Report on Tests of Data Rod Assembly for Dry-Barrel Fire Hydrants 3 of 3

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5. RECOMMENDATIONS:

From the test results it is my opinion that the Hydrant Network Solutions Model DR-1A data rodassembly meets or exceeds the requirements of AWWA C502-05 standard for prototype testingof Dry-Barrel Fire Hydrants.

The data rod assembly is required to be fabricated as per the attached drawings SR-001 thru SR-005with the dimensions, steel grades, welds and fasteners as noted there. Any variation from thesespecifications or changes to the model requires further testing and designation. The six (10-32)stainless steel socket cap screws connecting the cap to the tube should be torqued on all operatingassemblies with a minimum of 29 ft-lbs but not exceeding 33 ft-lbs. These test results are valid onlyfor hydrants of 5 feet of bury or less.

Please note that this is the prototype test result. Production testing and quality control shall beconducted at the place of manufacture or place of assembly or both as per industry standards.

I trust the above information meets with your present requirements. Should you have any questions orrequire further information, please do not hesitate to contact me at your convenience.

Yours truly,

Len Jobin, P.Eng.

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Report on Tests of Data Rod Assembly for Dry-Barrel Fire Hydrants – Appendix A 1 of 11_____________________________________________________________________________

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Report on Tests of Data Rod Assembly for Dry-Barrel Fire Hydrants – Appendix A10 of 11_____________________________________________________________________________

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Report on Tests of Data Rod Assembly for Dry-Barrel Fire Hydrants – Appendix A11 of 11_____________________________________________________________________________

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Appendix A – Torque Testing to AWWA C502-05hydrantnsi.com/downloads/Torque Testing Report to...

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