707.01, 707.02 Metallic Coated Corrugated Steel Conduits |
1. Specifications:
707.01, 707.02 C&MS
2. Sampling and/or Inspection Requirements:
All pipe and coupling bands shall be inspected after delivery to the project for condition, size, gauge, fabrication workmanship and quantity. Coupling bands should be the same thickness as the delivered pipe. Dimensions shall be checked against the pertinent Tables in 707.01, .02 Addendum ( section 4). Seam fabrication requirements shall also be checked in accordance with the Addendum (Field).
Individual pieces may be rejected for the following items of faulty workmanship:
Elliptical shape when pipe is supposed to be round
Variation from straight centerline.
Ragged or diagonal sheared edges.
Loose, unevenly lined or spaced rivets or spot welds.
Poorly formed rivet heads or lock seams.
Defective spot welds or continuous welds
Unfinished ends.
Illegible brand.
Lack of rigidity.
Dents or bends in the metal.
Certification Program:
Metal Pipe certified in accordance with Supplement 1019: for a list of manufacturers conforming with this supplement's requirements visit OMM website at
http://www.dot.state.oh.us/Divisions/ConstructionMgt/Materials/Pages/CertifiedSuppliers.aspx
Certified materials will be shipped using the TE-24 electronic documentation system. A bill of lading defining individual components incorporated in the construction item shall accompany the shipment in addition to a copy of the TE-24.
Fasteners and coupling bands are considered as included in the shipment.
Report rejected materials to the DET. Include what was rejected and from what manufacturer.
No samples are required of materials delivered to the project site. Random samples may be obtained by ODOT/OMM Quality Assurance Inspectors at the discretion of the Office of Materials Management (OMM).
3. Methods of Tests:
AASHTO T 65, T 213. ASTM A 90, A 370. (OMM)
AASHTO M167
AASHTO M36/M
S1019
4. Addendum:
Seam Fabrication Requirements:
Excerpts from AASHTO M 36:
Riveted Seams:
Rivets shall be of the diameters for the sheet thickness specified in rivet table below.
Resistance Spot Welded Seams:
The Resistance spot weld should form a full circle and pull the metal joint tightly together. The spot weld should be at least 1/4" from the sheet metal edge. Spot welds should be spaced no than 6 inches [except 12" diameter pipe may have only 6 welds].
The edge of the weld should not show evidence of melting or burning though the plate, but 10% of the edge is allowed. The metal being discolored is not melting or burning through.
Sheet Thickness | Minimum Weld or Rivet Diameter Corrugation Depth
1/4 (6.4) |
Minimum Weld or Rivet Diameter Corrugation Depth
½ (12.7) |
Minimum Weld or Rivet Diameter Corrugation Depth 1" (25) | |
Inches | (mm) | Inches (mm) | Inches (mm) | Inches (mm) |
.052 | (1.32) | 1/4" (8) | - | - |
.064 | (1.63) | 1/4" (8). | 5/16" (9.5) | 5/16" (9.5) |
.079 | (2.01) | 1/4" (8) | 5/16" (9.5) | 5/16" (9.5) |
.109 | (2.77) | 5/16" (9.5) | 3/8" (11) | 3/8" (11) |
.138 | (3.51) | 5/16" (9.5) | 3/8" (11) | 3/8" (11) |
.168 | (4.27) | 5/.16" (9.5) | 3/8" (11) | 3/8" (11) |
Helical Continuous Welded Seams
Welded seam pipe with helical corrugations shall have a continuous welded seam extending from end to end of each length of pipe section. Welded seams shall be controlled such that the combined width of weld and adjacent spelter coating burned by welding does not exceed (3) times the metal thickness. Damage outside this width shall be repaired.
Lock Seams
Pipes fabricated with a continuous helical lock seam parallel to the corrugations may be used for full-circle and equivalent pipe arch sizes. The lock seam shall meet the following requirements:
The edges of the sheets within the cross section of the lock"s seam shall lap at least 5/32in (4mm) for pipe 10in (254mm) or less in diameter and at least 5/16in (8mm) for greater than 10in (254mm) in diameter, with an occasional tolerance of minus 10 percent of lap width allowable.
The lap will be tight. Metal will have no visible cracks at the lap. Lapped surfaces shall be in tight contact.
The average inside diameter of circular pipe and pipe to be reformed into pipe arches shall not vary more than ½ inch (12.7 mm) from the nominal diameter [or 1% of the diameter - whichever is greater] when measured on the inside crest of the corrugations.
Corrugation Depth is measured on the outside of the pipe, from a straight-edge laid along the crest parallel to the axis of the pipe.
Nominal Inside Diameter | Nominal Pipe Arch (½ corrugation Depth) | Nominal Pipe Arch (1 corrugation Depth) | 1/4" Corrugation Depth | ½" Corrugation Depth | 1" Corrugation Depth | |||
Inches | mm | Inches | mm | Inches | mm | Inches (mm) | Inches (mm) | Inches (mm) |
6 | 150 | 1/4 (6.5) x 1.5"(38) | ||||||
8 | 200 | 1/4 (6.5) x 1.5"(38) | ||||||
10 | 250 | 1/4 (6.5) x 1.5"(38) | ||||||
12 | 300 | 1/4 (6.5) x 1.5"(38) | ½" (13) x 2 11/6"(68) | |||||
15 | 375 | 17 x13 | 430 x 340 | 1/4 (6.5) x 1.5"(38) | ½" (13) x 2 11/6"(68) | |||
18 | 450 | 21 x 15 | 530 x 380 | 1/4 (6.5) x 1.5"(38) | ½" (13) x 2 11/6"(68) | |||
21 | 535 | 24 x 18 | 610 x 460 | ½" (13) x 2 11/6"(68) | ||||
24 | 600 | 28 x 20 | 710 x 510 | ½" (13) x 2 11/6"(68) | ||||
27 | 675 | ½" (13) x 2 11/6"(68) | ||||||
30 | 750 | 35 x 24 | 870 x 610 | ½" (13) x 2 11/6"(68) | ||||
33 | 838 | ½" (13) x 2 11/6"(68) | ||||||
36 | 900 | 42 x 29 | 1060 x 740 | 40 x 31 | 1010 x 790 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
42 | 1050 | 49 x 33 | 1240 x 480 | 46 x 36 | 1160 x 920 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
48 | 1200 | 57 x 38 | 1440 x 970 | 53 x 41 | 1340 x 1050 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
54 | 1350 | 64 x 43 | 1620 x 1100 | 60 x 46 | 1520 x 1170 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
60 | 1500 | 71 x 47 | 1800 x 1200 | 66 x 51 | 1670 x 1300 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
66 | 1650 | 77 x 52 | 1950 x 1320 | 73 x 55 | 1850 x 1400 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
72 | 1800 | 83 x 57 | 2100 x 1450 | 81 x 59 | 2050 x 1500 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |
78 | 1950 | 87 x 63 | 2200 x 1620 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |||
84 | 2100 | 95 x 67 | 2400 x 1720 | ½" (13) x 2 11/6"(68) | 1"(25) x 3"(75) | |||
90 | 2250 | 103 x 71 | 2600 x 1820 | 1"(25) x 3"(75) | ||||
96 | 2400 | 112 x 75 | 2840 x 1920 | 1"(25) x 3"(75) | ||||
102 | 2550 | 117 x 79 | 2970 x 2020 | 1"(25) x 3"(75) | ||||
108 | 2700 | 128 x 83 | 3240 x 2120 | 1"(25) x 3"(75) | ||||
114 | 2850 | 137 x 87 | 3470 x 2220 | 1"(25) x 3"(75) | ||||
120 | 3000 | 142 x 91 | 3600 x 2320 | 1"(25) x 3"(75) | ||||
126 | 3150 | 1"(25) x 3"(75) | ||||||
132 | 3300 | 1"(25) x 3"(75) | ||||||
138 | 3450 | 1"(25) x 3"(75) | ||||||
144 | 3600 | 1"(25) x 3"(75) |
A tolerance of plus or minus one inch (25 mm) or 2 percent of equivalent circular diameter, whichever is greater, will be permissible in span and rise.
Requirements for Perforations
Diam. of Pipe | Min. Rows of | H (Max) | L (Min) | |||
In. | (mm) | Perforations | In. | (mm) | In. | (mm) |
4 | 100 | 2 | 1-13/16 | 46 | 2-9/16 | 64 |
6 | 150 | 4 | 2-3/4 | 69 | 3-7/8 | 98 |
8 | 200 | 4 | 3-11/16 | 92 | 5-1/8 | 130 |
10 | 255 | 4 | 4-9/16 | 115 | 6-7/16 | 164 |
12 | 305 | 6 | 5-1/2 | 138 | 7-11/16 | 195 |
15 | 380 | 6 | 6-7/8 | 172 | 9-5/8 | 244 |
18 | 455 | 6 | 8-1/4 | 207 | 11-9/16 | 294 |
21 | 535 | 6 | 9-5/8 | 242 | 13-1/2 | 343 |
24 600 and larger |
0 | ** | *** |
* 8 minimum but not over 6 in. (150 mm) spacing between rows.
** H (Max) = 0.46 D
*** L (Min) - 0.64 D
Coating (total both sides):
Weight of Galvanizing: 2.0 oz/sq. ft. average 1.8 oz/sq. ft. min single
Weight of Aluminum : 1.00 oz/sq. ft. average .90 oz/sq. ft. min single
Weight of Aluminum-Zinc: 0.70 oz/sq. ft. average (total both sides) 0.60 oz/sq. ft. min single
Coupling Bands
Minimum Thickness will be:
707.01: .052" (1.32 mm) for 48" diameter and less
.064" (1.63 mm) for greater pipe diameter.
707.02: .064" (1.63 mm)
Type of coating shall match that of the pipe.
Unless otherwise approved or required by the Engineer, coupling bands for Type I, Type 1A and Type II pipe shall be connected by (3/8in.) (9.5mm) diameter bolts for pipe diameters through (18in) (457mm) inclusive, and by (1/2in) (125)mm diameter bolts for all other pipe diameters; for Type III a pipe by (5/16in)(8mm) diameter bolts