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4W Minimum bedding depth to be 18" and minimum width to be diameter of pipe . Cost of removal of unsuitable material beneath 18" bedding shall be paid for as subsoil excavation ( Earthwork) Item No . 5 . The work under this section shall include all materials , excavation , backfilling , tamping and disposal of surplus material . All required sheeting is to be included in the cost of pipe . Such price and payment shall be full compensation for all work in this section . The work specified in this item r shall conform to Section 430 and 443 . Payment shall be made under: .. Item No . 32 -Concrete Pipe Culvert ( Perforated 48 " x 76 - Per Linear Foot Item No . 33 -Concrete Pipe Culvert (48 " x 76 " ) - Per Linear Foot ow B . CONCRETE PIPE JOINTS : Subarticle 430-7 . 1 . 1 ( Page 384 ) is modified by the addition of the following : In addition to the rubber gaskets all round and elliptical concrete pipe other than side drains shall have wrapped filter fabric jacket joints . The joint between the pipe and the structure shall also have a filter fabric jacket . These joints shall conform to INDEX 280 and have a minimum wrapping width of 1 foot on both sides of the exposed AW joint . The fabric must be long enough to overlap the outer circumference of the pipe joint by a minimum of 1 foot . Metal strapping will be used on both sides of the circumference of the pipe joint to secure the fabric . 40 Other methods which will secure the fabric against the wall until the backfill is compacted will be considered for approval by the Engineer. The filter fabric shall be in accordance with Section 985 , and/or as modified by 4W these special provision , for subsurface drainage . Payment shall be made under the unit price for concrete pipe . C . PIPE CULVERTS AND STORM SEWERS : Subarticle 430- 12 . 1 The text 10 is deleted and the following substituted : "The quantities of pipe culvert to be paid for under this Section shall be the "' plan quantity in feet of concrete Pipe Culvert . Any additions or deletions thereto , as authorized by the Engineer, shall be determined by plan dimensions , final measurement , or any combination thereof, as measured 40 along the centerline of the completed and accepted pipe . " Pipe that has been patched significantly prior to delivery shall be grounds 4W for rejection of pipe . Lifting holes on pipe culverts shall be grounds for rejection of pipe . ASTM AW Specification C-76-85A and AASTM Specification M170-89 are modified by the following : Significant patching of pipe prior to delivery shall be grounds for rejection of pipe . The exposure of the ends of the longitudinal stirrups or spacers that have been used to position the cages during the placement of the concrete may be a cause for rejection by the Project Engineer. TECHNICIAL PROVISION TP - 14