1039 In either process, the pipe shall be dipped a second time or more if necessary, to give a minimum thickness of 0.05 in. If paved invert is specified, the pipe or pipe-arch shall first be fully coated as required. Additional bituminous material shall be applied in the bottom section to form a smooth pavement. Except where the upper edges intersect the corrugations, the pavement shall have a minimum thickness of 1/8 in. above the crests of the corrugations. The pavement shall be applied to the lower quarter of the circumference. The manufacturer of the asphalt material shall furnish to the pipe fabricator the type of certification specified in the Fr equency Manual and in accordance with 916 for each shipment or lot of asphalt material. The pipe fabricator shall keep these certifications on file and available to review for five years. In addition, samples from the working tank will be obtained for verification of requirements.
908.08 Polymer Precoated Galvanized Corrugated Steel Culvert Pipe and
Pipe-Arches The pipe or pipe-arch and coupling bands shall be in accordance with AASHTO M 245 with additions in accordance with 908.02. The polymer precoated galvanized 130 steel sheets shall be in accordan ce with AASHTO M 246, grade 10/10.
908.09 Structural Plate Pi pe, Pipe-Arches, and Arches
a.Steel Steel structural plate pipe, pipe-arches, and arches shall be constructed from individually galvanized corrugated steel plates as described herein. For pipes and pipe-arches having a thickness less than 0.280 in., the bottom plates shall be of the next greater thickness than that specified for the top and side plates, not including corner plates for pipe-arches. The individual plates shall be in accordance with 140 AASHTO M 167 and AASHTO LRFD Bridge Construction Specifications. The materials and fabrication shall be as follows:
1.The minimum corner plate radius of the arc joining the top and bottom plates of pipe-arches shall be 18 in. for openings up to and including 131 sq ft and 31 in. for openings over 131 sq ft. The minimum radius of the arc shall be 31 in. for openings from 98 sq ft up to and including 214 sq ft.
2.Assembly bolts shall be high strength heavy hex in accordance with ASTM F3125, grade A 325, or ASTM A449. Nuts shall be heavy hex and in accordance with ASTM A563, grade C3. Washers shall be in accordance with ASTM F436. Assembly bolts, nuts, and washers shall be hot dip galvanized in accordance with ASTM F2329, or be mechanically galvanized in accordance with ASTM B695, Class 55. 908.09
3.The sheet manufacturer’s certified mill report and the fabricator’s certification shall be furnished in accordance with 160 908.02, except the documents sha ll be in accordan ce with the applicable requirements of AASHTO M 167.
b.Aluminum Alloy Aluminum alloy structural plate pipe, pipe-arches, and arches shall be in accordance with AASHTO M 219. The sheet manufacturer’s certified mill report and the fabricator’s certification shall be furnished in accordance with 908.02. 908.10 Cast Iron Soil Pipe This pipe shall be in accordance with ASTM A74. Markings shall be in 170 accordance with ASTM A74 or ANSI A 40.1.
908.11 Steel Pipe This item shall be electric-fusion, arc-weld ed steel pipe in accordance with ASTM
A139, grade B, or electric-resistance weld ed pipe in accordance with ASTM A53, Type E, grade B, as applicable. A Type C certification in accordance with 916 shall be provided for the steel pipe.
908.12 Straps, Hook Bolts and Nuts Used in Anchors Straps shall be of the type and size shown on the plans. Reinforcing bars used for 180
straps shall meet the applicable requirements of 910.01 and shall be galvanized in accordance with ASTM A767, clas s I. Aircraft cable used for straps shall be made of zinc coated steel wire, 3/8 in. nominal diameter, consisting of seven 19-wire flexible steel strands, with a minimum breaking strength of 14,000 lb. The cable shall be in accordance with Military Sp ecification MIL-W-83420D. Hook bolts and nuts shall be of the size shown on the plans, shall be in accordance with ASTM A307, and shall be galvanized in accordance with ASTM F2329. Threads shall be American Standard Coarse Thread Se ries Class 2 fit. Threads shall be cleaned after galvanizing to provide a free running fit. Maximum oversizing of the nut threads 190 shall be 1/64 in.
908.13 Blank
908.14 Slotted Drain or Slotted Vane Drain Pipe Slotted drains shall be manufactured fr om helically corrugated steel pipe in
accordance with AASHTO M 36. At the end of the pipe there shall be two annular corrugations to allow the corrugated band to fully mesh with the pipe. The grated assembly shall be made of structural steel in accordance with ASTM 200 A36, Grade 36. The assembly shall be suitably welded to the pipe and galvanized after assembly in accordance with AASHTO M 111. The grate shall be of the size and spacing shown on the plans and shall be welded on both sides to each bearing bar with a 3/16 in. fillet weld. 908.10 The size and thickness of the corrugated steel slotted drain pipe shall be as shown on the plans. Slotted vane drain pipe shall be smoo th wall PVC in accordance with 907.23, and shall be of the diameter specified. The casti ng shall be in accordance with 910.05(b). 210 The finish shall be standard black asphalt emulsion. Individual units shall have a minimum weight of 155 lb.
Source: Indiana Standard Specifications, 2024 Edition. Pages 1048–1051 of 1,248.