AWWA C906 PDF

The test pressure awwa c DR17 is also psi, which meets the specified test pressure. A similar comparison can be made for peak pressure during fire flow where velocity may reach 8 fps. Like what you are reading? The sum equals The surge pressure occurring in HDPE pipe is significantly lower than surge pressures occurring in cast or ductile iron pipe and is lower than that in PVC pipe of the same DR. Maximum transient pressure due to the change is given in Table A Awwa c pressure is compared with the maximum total pressure allowed during surge found in Table A An engineer is designing a water system that operates at 85 psi and has some runs awwa c it where the flow velocity is 4 fps.

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The resultant net peak stress during the surge event remains less than the peak stress capability of the pipe; therefore, long-term performance is assured. Log In Sign Up. Hydrostatic design stress HDS: Plant awwq by the purchaser or the omission of these inspections shall not relieve the manufacturer of the responsibility to provide materials complying with the applicable requirements of this standard and of the purchaser.

This standard classifies pipe in accordance with its pressure class PC. PE pipe materials shall contain at least 2 percent finely divided and well-dispersed carbon black. B Modification of Standard AWWA C takes into account c continuous pumping and transient surge pressures that occur in municipal water pipes. When plant inspection is required by the purchaser, the manufacturer shall provide the purchaser with adequate advance notice of when and where production of ordered materials will begin.

The walls shall be free of cuts, cracks, holes, blisters, voids, foreign inclusions, or other defects that are visible to the naked eye and that may affect the wall integrity. Determine the status of certifications by parties offering to certify products for contact with, or treatment of, awwwa water.

Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdiction. Materials language has been added Sec. Care shall be taken during shipment to prevent cuts, scratches, and other damage. The dimensional tolerances for diameter and wall thickness shall be the same c on a percentage basis as that specified for the average outside diameter and minimum wall thickness for the next smaller size.

Colored products shall contain sufficient UV stabilizer in lieu of carbon black awaw 24 months of outdoor storage. Pipes are classified in accordance with standard pipe dimension ratios DRs i. Adwa tensile strength shall be not less than 2, psi DR 21 may be used only if the designer can operate the water main at working pressure less than 70 psig, or if the surge at 5 fps was attributed to occasional events only with recurring surges at 4 fps or less refer to Table C.

The sum equals The actual value is generally larger and depends on the magnitude of the applied transient and sustained pressures, as well as on the operating temperature. Occasional surge pressure POS: Hoop stress values shall be based on the initial prior to test dimensions of the specimens. Gravity Sanitary Sewer Design and Construction. Fittings that are produced by injection molding shall be tested once per production run. AWWA is the largest organization of water qwwa in the world.

Any indication of cracking or crazing is cause for rejection of the pipe. Updates in C include: Average inside diameter X can be calculated as follows: A shipment of resin material that is included under one material certification.

Incoming lots of PE materials shall be sampled and tested for melt-flow index and density by the manufacturer. Unless otherwise noted, the design factor used in this standard is 0. Related Articles.

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The resultant net peak stress during the surge event remains less than the peak stress capability of the pipe; therefore, long-term performance is assured. Log In Sign Up. Hydrostatic design stress HDS: Plant awwq by the purchaser or the omission of these inspections shall not relieve the manufacturer of the responsibility to provide materials complying with the applicable requirements of this standard and of the purchaser. This standard classifies pipe in accordance with its pressure class PC. PE pipe materials shall contain at least 2 percent finely divided and well-dispersed carbon black. B Modification of Standard AWWA C takes into account c continuous pumping and transient surge pressures that occur in municipal water pipes.

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