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UPPER PIPE BEDDING ZONE OD/2 OD/2 PIPE OUTER DIAMETER (OD) 6-INCH 4-IN IF OD<30-IN 6-IN IF OD≥30-IN TRENCH BACKFILL (PER SECTION 306) LOWER PIPE BEDDING ZONE SPRINGLINE PIPE OUTER DIAMETER PIPE INVERT TRENCH FOUNDATION STABILIZATION (PER SECTION 304) 1 CITY OF JEROME PUBLIC WORKS Richard Wuori, PE, Director 152 East Avenue A Jerome ID 83338 http://www.ci.jerome.id.us TYPICAL PIPE BEDDING SECTION SD-302 STANDARD DRAWING NO. DATE 21 SEPT 2017 GENERAL NOTES A REFER TO ISPWC SECTION 305 FOR MATERIAL AND COMPACTION REQUIREMENTS ISPWC SPECIFICATION REFERENCE SEC 305 PIPE BEDDING ISPWC IDAHO STANDARDS FOR PUBLIC WORKS CONSTRUCTION SHEET KEYNOTES 1 SUBGRADE PREPARATION PER ISPWC SECTION 306 AND 307.3.4 X A TYPICAL PIPE BEDDING SECTION DETAIL Relative Scale 1"=1' Absolute Scale 1:12 0' 0.5' 1' BEDDING SYSTEM BEDDING MATERIAL LOWER BEDDING ZONE UPPER BEDDING ZONE CLASS A-1 TYPE I TYPE I CLASS A-2 TYPE I TYPE II OR III CLASS B-1 TYPE II TYPE II CLASS B-2 TYPE III TYPE III CLASS C-1 (CONCRETE CAP) TYPE I TYPE IV CLASS C-2 (CONCRETE CRADLE) TYPE IV TYPE I CLASS C-3 (CONCRETE ENCASEMENT) TYPE IV TYPE IV \\jeromefs01\DeptEngineering\Shared\_CAD-STANDARDS\ver2018\Section300-Trenching\SD-301-TypicalTrench-C3D2018.dwg