CORRUGATED STEEL PIPE AND PIPE ARCH (INCLUDING UNDERDRAIN)
943-1 General Requirements.
Corrugated steel pipe, including round culvert pipe, pipe arch and underdrain and coupling bands for each type shall conform to AASHTO M 36 and shall include plant certification from the National Transportation Product Evaluation Program (NTPEP .). Except for underdrain, corrugated steel pipe including pipe arch shall be fabricated with helical corrugations with a minimum of two ann ular corrugations formed on each end of each pipe to accommodate a coupling band. Annular fabrication is not permitted unless specifically called for in the Plans or Specifications. Provide, as part of the shipping ticket, the actual mean inside diameter a nd total measured lengths of each LOT of pipe shipped to the project. Include the minimum and maximum inside diameters used to calculate the actual mean inside diameter.
943-2 Round Culvert Pipe.
For round culvert pipe used as sidedrain, unless shown othe rwise in the Plans, the minimum thickness of the metal (including galvanizing - AASHTO M 218, or aluminum coating - AASHTO M 274), shall be as specified below. Alternatively, if no future maintenance concerns exist , the Contractor may propose the pipe gage based on the Department’s Drainage Manual and Culvert Service Life Estimator for approval by the Engineer . FY 2023-24 Return to Table of Contents Table 943-1 Thickness of Metal for Sidedrain Pipe Nominal Diameter (Inches) Metal Sheet Gauge No. Mean Thickness Metal (Inches) 6 18 0.0516 8 16 0.0635 10 16 0.0635 12 16 0.0635 15 16 0.0635 18 16 0.0635 21 16 0.0635 24 16 0.0635 30 14 0.0785 36 14 0.0785 42 12 0.1084 48 12 0.1084 54 12 0.1084 60 10 0.1382 66 10 0.1382 72 10 0.1382 78 8 0.1681 84 8 0.1681 90 8 0.1681 96 and over 8 0.1681 Table 943-2 Permissible Variation in Thickness of Metal for Pipe and Connecting Bands Metal Sheet Gauge No Mean Thickness of Metal (Inches) Permissible Variation (Inches) 18 0.0516 0.007 16 0.0635 0.007 14 0.0785 0.008 12 0.1084 0.009 10 0.1382 0.009 8 0.1681 0.009
943-3 Pipe Arch.
For corrugated metal pipe arch, in addition to the requirements shown in AASHTO M 36, thickness of the metal shall be as shown for the equivalent size round pipe in Tables 943-1 and 943-2, above, an d the fabrication of the pipe arch sections shall be such as to insure a substantially flat invert.
943-4 Alternate Connecting Bands.
In addition to the connecting bands as specified in AASHTO M 36, alternate types of connecting bands are specified in 430 -8.1.3, for use with the types of installations as shown. FY 2023-24 Return to Table of Contents
943-5 Bituminous Coating and Paved Invert.
When bituminous coating is specified, the pipe, or pipe arch, shall be coated in accordance with the requirements of AASHTO M 190, for Type A (Fully Bitum inous Coated). When bituminous coated and paved invert are specified the pipe or pipe arch shall be coated and paved in accordance with AASHTO M 190, for Type C (Fully Bituminous Coated and Paved). The temperature of the asphalt at the time of coating and the duration of the pipe submerged time shall be optimized such that excess coating does not adhere to the pipe.
943-6 Paved Interior.
When bituminous coated and paved interior are called for, the coating and paving shall meet the requirements specified above for bituminous and paved invert (Type C), with the following additions and exceptions:
1.The smooth pavement formed by the asphalt cement shall extend over the entire interior of the pipe.
2.The exterior coating and the i nterior paving shall be applied.
3.No markings will be required on the outside of the pipe to designate the center line of the top of the pipe.
4.Lifting lugs shall be attached to the pipe, and shall be suitably placed to facilitate moving the pipe w ithout damage to the exterior or interior bituminous material.
943-7 Basis of Acceptance of Bituminous Coating and Paving.
The acceptance of the bituminous coating, paved invert, and paved interior will be based on the raw materials manufacturer’s certifi cation of compliance with AASHTO M 190.
943-8 Underdrain Pipe.
Corrugated metal pipe for underdrain shall conform to the requirements of AASHTO M 36 except that Class IV pipe, as specified in Section 18.1.1.4 therein, shall not be used. FY 2023-24 Return to Table of Contents SECTION 944 STRUCTURAL PLATE STEEL PIPE AND PIPE ARCH
944-1 Description.
This Section covers the materials for corrugated galvanized steel structural plate pipe and pipe arch, including the necessary bolts and nuts for connecting plates and for assembling the pipe or pipe arch at the point of destination when so specified. The sizes of the pipe or pipe arch shall be as shown in the Plans.
944-2 Materials.
Structural plate pipe and pipe arch shall be of galvanized steel, complying with the requirements of AASHTO M 167, with the additional requirement that the minimum thickness of the plates shall be as shown in the Plans.
944-3 Tolerance in Span and Height.
A tolerance of plus or minus 4% will be allowed in the specified span and height of pipe arches. A tolerance of minus 2 inches to plus 4 inches will be allowed in the specified diameter of round pipe.
944-4 Bituminous Coating.
When bituminous coating is specified, all plates shall be fully coated on both sides with asphalt cement. The bituminous coating shall co nform to the requirements of AASHTO M 190, for Type A.
944-5 Mill Analysis and Guarantee.
Six certified copies of Mill Analysis and Guarantee shall be furnished to the Engineer, and acceptance of the pipe will be based on such reports.
944-6 Assembly Diag rams.
Diagrams for assembling shall be furnished unless the pipe or pipe arch is furnished completely assembled.
944-7 Fabrication.
The fabrication of the pipe and pipe arch shall comply with the applicable requirements of Section 23, of the AASHTO LRFD Bridge Construction Specifications. Unless otherwise specified, the pipe and pipe arch shall be of full section for the entire length.
944-8 Assembly.
When purchase contracts stipulate that the pipe be assembled, the dealer shall furnish the pipe and pipe arch completely assembled at the point of destination, or at the site, as specified, and in lengths as specified.
944-9 Direct Purchases by the Department.
When the Department purchases the pipe or pipe arch direct from the dealer, the quantity to be paid for shall be the number of feet of pipe and of pipe arch, as ordered, provided that sufficient materials meeting the requirements of these specifications shall be furnished to construct the pipe and pipe arch of the length and sizes shown. FY 2023-24 Return to Table of Contents
Source: Florida Standard Specifications for Road and Bridge Construction, 2024 Edition. Pages 1070–1072 of 1,299.