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

(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 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 ( corrugation Depth) Nominal Pipe Arch (1 corrugation Depth) 1/4" Corrugation Depth " 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) " (13) x 2 11/6"(68)  
15 375 17 x13 430 x 340     1/4 (6.5) x 1.5"(38) " (13) x 2 11/6"(68)  
18 450 21 x 15 530 x 380     1/4 (6.5) x 1.5"(38) " (13) x 2 11/6"(68)  
21 535 24 x 18 610 x 460       " (13) x 2 11/6"(68)  
24 600 28 x 20 710 x 510       " (13) x 2 11/6"(68)  
27 675           " (13) x 2 11/6"(68)  
30 750 35 x 24 870 x 610       " (13) x 2 11/6"(68)  
33 838           " (13) x 2 11/6"(68)  
36 900 42 x 29 1060 x 740 40 x 31 1010 x 790   " (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   " (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   " (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   " (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   " (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   " (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   " (13) x 2 11/6"(68) 1"(25) x 3"(75)
78 1950     87 x 63 2200 x 1620   " (13) x 2 11/6"(68) 1"(25) x 3"(75)
84 2100     95 x 67 2400 x 1720   " (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