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This normal covers the thickness layout of ductile iron pipe complying with the necessities of ANSI/AWWA C151/A21.51, Ductile Iron Pipe, Centrifugally forged, for Water. comprises an summary of the layout process and an instance with the foundation of layout or layout process. the majority of the traditional includes tables that checklist thicknesses for traditional laying stipulations and likely depths of canopy, water operating strain, operating pressures and greatest depths of canopy for normal laying stipulations and traditional strain sessions, and designated thickness periods of ductile iron pipe.

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42 36 Size in. 24 Total Calculated Thickness,† in. 47 Total Calculated Thickness,† in. Use Pressure Class Total Calculated Thickness,† in. 41 Total Calculated Thickness,† in. 34 Total Calculated Thickness,† in. 3048. * Pipe may be available for depths of cover greater than those shown in the table. † Total calculated thickness includes service allowance and casting allowance added to net thickness. ‡ For pipe 14 in. (356 mm) and larger, consideration should be given to laying conditions other than Type 1.

Table continued next page) --`,,,,,`,`,``,,``,,,`,,`,,,````-`-`,,`,,`,`,,`--- Copyright American Water Works Association Provided by IHS under license with AWWA No reproduction or networking permitted without license from IHS Licensee=ATLATEC S A DE C V/5972499002, User=Yañez, Simon Not for Resale, 02/13/2009 11:05:42 MST THICKNESS DESIGN OF DUCTILE-IRON PIPE 47 Table 14 Rated working pressure and maximum depth of cover (continued) Laying Condition Type 1 Trench Size in. Pressure Class* psi Nominal Thickness in.

895. 108. D †When the calculated Pv is between two tabulated values, the smaller ---- or t Copyright American Water Works Association Provided by IHS under license with AWWA No reproduction or networking permitted without license from IHS D ---- should be used. 895. 105. D †When the calculated Pv is between two tabulated values, the smaller ---- or t D ---- should be used. 895. 105. D †When the calculated Pv is between two tabulated values, the smaller ---- or t D ---- should be used. 895. 105.

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